Page 1 Catalyst 2960 Switch Command Reference Cisco IOS Release 12.2(25)FX September 2005 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7816882= Text Part Number: 78-16882-01...
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Page 3: Table Of Contents
Privileged EXEC Mode Global Configuration Mode Interface Configuration Mode config-vlan Mode VLAN Configuration Mode Line Configuration Mode Catalyst 2960 Switch Cisco IOS Commands C H A P T E R aaa accounting dot1x aaa authentication dot1x archive download-sw archive tar...
Page 4 2-45 cluster enable 2-46 cluster holdtime 2-48 cluster member 2-49 cluster outside-interface 2-51 cluster run 2-52 cluster standby-group 2-53 cluster timer 2-55 define interface-range 2-56 delete 2-58 deny (MAC access-list configuration) 2-59 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 5 2-106 ip dhcp snooping vlan 2-107 ip igmp filter 2-108 ip igmp max-groups 2-109 ip igmp profile 2-111 ip igmp snooping 2-113 ip igmp snooping last-member-query-interval 2-115 ip igmp snooping querier 2-117 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 6 2-175 mls qos queue-set output threshold 2-177 mls qos rewrite ip dscp 2-179 mls qos srr-queue input bandwidth 2-181 mls qos srr-queue input buffers 2-183 mls qos srr-queue input cos-map 2-185 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 7 2-238 service-policy 2-240 2-242 setup 2-244 setup express 2-247 show access-lists 2-249 show archive status 2-252 show auto qos 2-253 show boot 2-257 show cable-diagnostics tdr 2-259 show class-map 2-261 show cluster 2-262 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 8 2-331 show mac address-table aging-time 2-333 show mac address-table count 2-335 show mac address-table dynamic 2-337 show mac address-table interface 2-339 show mac address-table notification 2-341 show mac address-table static 2-343 Catalyst 2960 Switch Command Reference viii 78-16882-01...
Page 9 2-400 show vtp 2-403 shutdown 2-407 shutdown vlan 2-408 snmp-server enable traps 2-409 snmp-server host 2-412 snmp trap mac-notification 2-416 spanning-tree backbonefast 2-418 spanning-tree bpdufilter 2-419 spanning-tree bpduguard 2-421 spanning-tree cost 2-423 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 10 2-468 switchport access 2-471 switchport backup interface 2-473 switchport block 2-475 switchport host 2-476 switchport mode 2-477 switchport nonegotiate 2-479 switchport port-security 2-481 switchport port-security aging 2-486 switchport priority extend 2-488 switchport protected 2-490 Catalyst 2960 Switch Command Reference 78-16882-01...
Page 11 (global configuration) 2-527 vmps retry 2-528 vmps server 2-529 vtp (global configuration) 2-531 vtp (VLAN configuration) 2-535 Catalyst 2960 Switch Boot Loader Commands A P P E N D I X boot copy delete flash_init format A-10 fsck A-11...
Page 12 A-19 A-20 type A-23 unset A-24 version A-26 Catalyst 2960 Switch Debug Commands A P P E N D I X debug auto qos debug backup debug cluster debug dot1x debug dtp debug etherchannel debug ip dhcp snooping B-10...
Page 13 B-70 debug udld B-72 debug vqpc B-74 Catalyst 2960 Switch Show Platform Commands A P P E N D I X show platform acl show platform backup interface show platform etherchannel show platform forward show platform ip igmp snooping...
Page 14 C-20 show platform qos C-21 show platform resource-manager C-22 show platform snmp counters C-24 show platform spanning-tree C-25 show platform stp-instance C-26 show platform tcam C-27 show platform vlan C-29 N D E X Catalyst 2960 Switch Command Reference 78-16882-01...
Page 15: Preface
This guide is for the networking professional using the Cisco IOS command-line interface (CLI) to manage the Catalyst 2960 switch, hereafter referred to as the switch. Before using this guide, you should have experience working with the Cisco IOS commands and the switch software features. Before using this guide, you should have experience working with the concepts and terminology of Ethernet and local area networking.
Page 16: Related Publications
For upgrade information, see the “Downloading Software” section in the release notes. • You can order printed copies of documents with a DOC-xxxxxx= number from the Cisco.com sites and from the telephone numbers listed in the “Obtaining Documentation” section on page xvii.
Page 17: Obtaining Documentation
Cisco products and to view technical documentation in HTML. With the DVD, you have access to the same documentation that is found on the Cisco website without being connected to the Internet. Certain products also have .pdf versions of the documentation available.
Page 18: Ordering Documentation
Preface Documentation Feedback The Product Documentation DVD is available as a single unit or as a subscription. Registered Cisco.com users (Cisco direct customers) can order a Product Documentation DVD (product number DOC-DOCDVD=) from Cisco Marketplace at this URL: http://www.cisco.com/go/marketplace/ Ordering Documentation Beginning June 30, 2005, registered Cisco.com users may order Cisco documentation at the Product...
Page 19: Cisco Product Security Overview
Register to receive security information from Cisco. • A current list of security advisories and notices for Cisco products is available at this URL: http://www.cisco.com/go/psirt If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL: http://www.cisco.com/en/US/products/products_psirt_rss_feed.html...
Page 20: Obtaining Technical Assistance
Cisco engineer. The TAC Service Request Tool is located at this URL: http://www.cisco.com/techsupport/servicerequest For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
Page 21: Definitions Of Service Request Severity
Definitions of Service Request Severity To ensure that all service requests are reported in a standard format, Cisco has established severity definitions. Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Page 22 Preface Obtaining Additional Publications and Information iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies • learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions.
Page 23: Chapter 1 Using The Command-Line Interface
C H A P T E R Using the Command-Line Interface The Catalyst 2960 switch is supported by Cisco IOS software. This chapter describes how to use the switch command-line interface (CLI) to configure software features. For a complete description of the commands that support these features, see Chapter 2, “Catalyst 2960...
Page 24: User Exec Mode
EXEC commands to temporarily change terminal settings, perform basic tests, and list system information. The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt. Switch> ? Catalyst 2960 Switch Command Reference 78-16882-01...
Page 25: Privileged Exec Mode
(?) at the prompt. Switch(config)# ? To exit global configuration command mode and to return to privileged EXEC mode, enter the end or exit command, or press Ctrl-Z. Catalyst 2960 Switch Command Reference 78-16882-01...
Page 26: Interface Configuration Mode
Switch# vlan database Switch(vlan)# The supported commands can vary depending on the version of software in use. To display a comprehensive list of commands, enter a question mark (?) at the prompt. Switch(vlan)# ? Catalyst 2960 Switch Command Reference 78-16882-01...
Page 27: Line Configuration Mode
To exit line configuration mode and to return to global configuration mode, use the exit command. To exit line configuration mode and to return to privileged EXEC mode, enter the end command, or press Ctrl-Z. Catalyst 2960 Switch Command Reference 78-16882-01...
Page 28 Chapter 1 Using the Command-Line Interface CLI Command Modes Catalyst 2960 Switch Command Reference 78-16882-01...
Page 29: Chapter 2 Catalyst 2960 Switch Cisco Ios Commands
C H A P T E R Catalyst 2960 Switch Cisco IOS Commands aaa accounting dot1x Use the aaa accounting dot1x global configuration command to enable authentication, authorization, and accounting (AAA) accounting and to create method lists defining specific accounting methods on a per-line or per-interface basis for IEEE 802.1x sessions.
Page 30 IEEE 802.1x. aaa new-model Enables the AAA access control model. For syntax information, see the Cisco IOS Security Command Reference, Release 12.2 > Authentication, Authorization, and Accounting > Authentication Commands. dot1x reauthentication Enables or disables periodic reauthentication. dot1x timeout reauth Sets the number of seconds between re-authentication attempts.
Page 31: Aaa Authentication Dot1X
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands aaa authentication dot1x aaa authentication dot1x Use the aaa authentication dot1x global configuration command to specify the authentication, authorization, and accounting (AAA) method to use on ports complying with IEEE 802.1x. Use the no form of this command to disable authentication.
Page 32 Description aaa new-model Enables the AAA access control model. For syntax information, see the Cisco IOS Security Command Reference, Release 12.2 > Authentication, Authorization, and Accounting > Authentication Commands. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 >...
Page 33: Archive Download-Sw
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive download-sw archive download-sw Use the archive download-sw privileged EXEC command to download a new image from a TFTP server to the switch and to overwrite or keep the existing image. archive download-sw {/force-reload | /imageonly | /leave-old-sw | /no-set-boot | /overwrite |...
Page 34 The /imageonly option removes the HTML files for the existing image if the existing image is being removed or replaced. Only the Cisco IOS image (without the HTML files) is downloaded. Using the /safe or /leave-old-sw option can cause the new image download to fail if there is insufficient flash memory.
Page 35 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive download-sw Related Commands Command Description archive tar Creates a tar file, lists the files in a tar file, or extracts the files from a tar file. archive upload-sw Uploads an existing image on the switch to a server.
Page 36: Archive Tar
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive tar archive tar Use the archive tar privileged EXEC command to create a tar file, list files in a tar file, or extract the files from a tar file. archive tar {/create destination-url flash:/file-url} | {/table source-url} | {/xtract source-url flash:/file-url [dir/file...]}...
Page 37 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive tar /table source-url Display the contents of an existing tar file to the screen. For source-url, specify the source URL alias for the local or network file system. These options are supported: The syntax for the local flash file system: •...
Page 38 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive tar Command Modes Privileged EXEC Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines Filenames and directory names are case sensitive. Image names are case sensitive. Examples This example shows how to create a tar file. The command writes the contents of the new-configs directory on the local flash device to a file named saved.tar on the TFTP server at 172.20.10.30:...
Page 39: Archive Upload-Sw
Use the upload feature only if the HTML files associated with the embedded device manager have been installed with the existing image. The files are uploaded in this sequence: the Cisco IOS image, the HTML files, and info. After these files are uploaded, the software creates the tar file.
Page 40 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands archive upload-sw Examples This example shows how to upload the currently running image to a TFTP server at 172.20.140.2: Switch# archive upload-sw tftp://172.20.140.2/test-image.tar Related Commands Command Description archive download-sw Downloads a new image to the switch.
Page 41: Auto Qos Voip
[cisco-phone | cisco-softphone | trust] Syntax Description cisco-phone Identify this port as connected to a Cisco IP Phone, and automatically configure QoS for VoIP. The QoS labels of incoming packets are trusted only when the telephone is detected.
Page 42 QoS. Auto-QoS configures the switch for VoIP with Cisco IP Phones on switch and routed ports and for VoIP with devices running the Cisco SoftPhone application. These releases support only Cisco IP SoftPhone Version 1.3(3) or later.
Page 43 2-3. You can enable auto-QoS on static, dynamic-access, and voice VLAN access, and trunk ports. When enabling auto-QoS with a Cisco IP Phone on a routed port, you must assign a static IP address to the IP phone. When a device running Cisco SoftPhone is connected to a switch or routed port, the switch supports only Note one Cisco SoftPhone application per port.
Page 44 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands auto qos voip Examples This example shows how to enable auto-QoS and to trust the QoS labels received in incoming packets when the switch or router connected to the port is a trusted device:...
Page 45: Boot Boothlpr
Use the boot boothlpr global configuration command to load a special Cisco IOS image, which when loaded into memory, can load a second Cisco IOS image into memory and launch it. This variable is used only for internal development and testing. Use the no form of this command to return to the default setting.
Page 46: Boot Config-File
Use the boot config-file global configuration command to specify the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration. Use the no form of this command to return to the default setting.
Page 47: Boot Enable-Break
Despite the setting of this command, you can interrupt the automatic boot process at any time by pressing the MODE button on the switch front panel. This command changes the setting of the ENABLE_BREAK environment variable. For more information, see Appendix A, “Catalyst 2960 Switch Boot Loader Commands.” Related Commands Command Description show boot Displays the settings of the boot environment variables.
Page 48: Boot Helper
This variable is used only for internal development and testing. Filenames and directory names are case sensitive. This command changes the setting of the HELPER environment variable. For more information, see Appendix A, “Catalyst 2960 Switch Boot Loader Commands.” Related Commands Command...
Page 49: Boot Helper-Config-File
Use the boot helper-config-file global configuration command to specify the name of the configuration file to be used by the Cisco IOS helper image. If this is not set, the file specified by the CONFIG_FILE environment variable is used by all versions of Cisco IOS that are loaded. Use the no form of this command to return to the default setting.
Page 50: Boot Manual
To boot the system, use the boot boot loader command, and specify the name of the bootable image. This command changes the setting of the MANUAL_BOOT environment variable. For more information, see Appendix A, “Catalyst 2960 Switch Boot Loader Commands.” Related Commands Command Description show boot Displays the settings of the boot environment variables.
Page 51: Boot Private-Config-File
Use the boot private-config-file global configuration command to specify the filename that Cisco IOS uses to read and write a nonvolatile copy of the private configuration. Use the no form of this command to return to the default setting.
Page 52: Boot System
Use the boot system global configuration command to specify the Cisco IOS image to load during the next boot cycle. Use the no form of this command to return to the default setting. boot system filesystem:/file-url ...
Page 53: Channel-Group
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands channel-group channel-group Use the channel-group interface configuration command to assign an Ethernet port to an EtherChannel group, to enable an EtherChannel mode, or both. Use the no form of this command to remove an Ethernet port from an EtherChannel group.
Page 54 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands channel-group Defaults No channel groups are assigned. No mode is configured. Command Modes Interface configuration Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines For Layer 2 EtherChannels, you do not have to create a port-channel interface first by using the interface port-channel global configuration command before assigning a physical port to a channel group.
Page 55 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands channel-group For a complete list of configuration guidelines, see the “Configuring EtherChannels” chapter in the software configuration guide for this release. Examples This example shows how to configure an EtherChannel. It assigns two static-access ports in VLAN 10...
Page 56: Channel-Protocol
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands channel-protocol channel-protocol Use the channel-protocol interface configuration command to restrict the protocol used on a port to manage channeling. Use the no form of this command to return to the default setting.
Page 57: Class
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands class class Use the class policy-map configuration command to define a traffic classification match criteria (through the police, set, and trust policy-map class configuration commands) for the specified class-map name. Use the no form of this command to delete an existing class map.
Page 58 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands class Examples This example shows how to create a policy map called policy1. When attached to the ingress direction, it matches all the incoming traffic defined in class1, sets the IP Differentiated Services Code Point (DSCP) to 10, and polices the traffic at an average rate of 1 Mbps and bursts at 20 KB.
Page 59: Class-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands class-map class-map Use the class-map global configuration command to create a class map to be used for matching packets to the class whose name you specify and to enter class-map configuration mode. Use the no form of this command to delete an existing class map and to return to global configuration mode.
Page 60 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands class-map Only one access control list (ACL) can be configured in a class map. The ACL can have multiple access control entries (ACEs). Examples This example shows how to configure the class map called class1 with one match criterion, which is an...
Page 61: Clear Ip Dhcp Snooping Database
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear ip dhcp snooping database clear ip dhcp snooping database Use the clear ip dhcp snooping database privileged EXEC command to clear the DHCP binding database agent statistics. clear ip dhcp snooping database statistics...
Page 62: Clear Lacp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear lacp clear lacp Use the clear lacp privileged EXEC command to clear Link Aggregation Control Protocol (LACP) channel-group counters. clear lacp {channel-group-number counters | counters} Syntax Description channel-group-number (Optional) Channel group number. The range is 1 to 6.
Page 63: Clear Mac Address-Table
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear mac address-table clear mac address-table Use the clear mac address-table privileged EXEC command to delete from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN.
Page 64: Clear Pagp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear pagp clear pagp Use the clear pagp privileged EXEC command to clear Port Aggregation Protocol (PAgP) channel-group information. clear pagp {channel-group-number counters | counters} Syntax Description channel-group-number (Optional) Channel group number. The range is 1 to 6.
Page 65: Clear Port-Security
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear port-security clear port-security Use the clear port-security privileged EXEC command to delete from the MAC address table all secure addresses or all secure addresses of a specific type (configured, dynamic, or sticky) on the switch or on an interface.
Page 66 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear port-security This example shows how to remove all the dynamic secure addresses learned on a specific interface: Switch# clear port-security dynamic interface gigabitethernet0/1 This example shows how to remove all the dynamic secure addresses from the address table:...
Page 67: Clear Spanning-Tree Counters
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear spanning-tree counters clear spanning-tree counters Use the clear spanning-tree counters privileged EXEC command to clear the spanning-tree counters. clear spanning-tree counters [interface interface-id] Syntax Description interface interface-id (Optional) Clear all spanning-tree counters on the specified interface. Valid interfaces include physical ports, VLANs, and port channels.
Page 68: Clear Spanning-Tree Detected-Protocols
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear spanning-tree detected-protocols clear spanning-tree detected-protocols Use the clear spanning-tree detected-protocols privileged EXEC command to restart the protocol migration process (force the renegotiation with neighboring switches) on all interfaces or on the specified interface.
Page 69: Clear Vmps Statistics
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear vmps statistics clear vmps statistics Use the clear vmps statistics privileged EXEC command to clear the statistics maintained by the VLAN Query Protocol (VQP) client. clear vmps statistics Syntax Description This command has no arguments or keywords.
Page 70: Clear Vtp Counters
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands clear vtp counters clear vtp counters Use the clear vtp counters privileged EXEC command to clear the VLAN Trunking Protocol (VTP) and pruning counters. clear vtp counters Syntax Description This command has no arguments or keywords.
Page 71: Cluster Commander-Address
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster commander-address cluster commander-address You do not need to enter this command. The cluster command switch automatically provides its MAC address to cluster member switches when these switches join the cluster. The cluster member switch adds this information and other cluster information to its running configuration file.
Page 72 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster commander-address Examples This is partial sample output from the running configuration of a cluster member. Switch(config)# show running-configuration <output truncated> cluster commander-address 00e0.9bc0.a500 member 4 name my_cluster <output truncated> This example shows how to remove a member from the cluster by using the cluster member console.
Page 73: Cluster Discovery Hop-Count
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster discovery hop-count cluster discovery hop-count Use the cluster discovery hop-count global configuration command on the cluster command switch to set the hop-count limit for extended discovery of candidate switches. Use the no form of this command to return to the default setting.
Page 74: Cluster Enable
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster enable cluster enable Use the cluster enable global configuration command on a command-capable switch to enable it as the cluster command switch, assign a cluster name, and to optionally assign a member number to it. Use the no form of the command to remove all members and to make the cluster command switch a candidate switch.
Page 75 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster enable Related Commands Command Description show cluster Displays the cluster status and a summary of the cluster to which the switch belongs. Catalyst 2960 Switch Command Reference 2-47 78-16882-01...
Page 76: Cluster Holdtime
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster holdtime cluster holdtime Use the cluster holdtime global configuration command to set the duration in seconds before a switch (either the command or cluster member switch) declares the other switch down after not receiving heartbeat messages.
Page 77: Cluster Member
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster member cluster member Use the cluster member global configuration command on the cluster command switch to add candidates to a cluster. Use the no form of the command to remove members from the cluster.
Page 78 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster member Examples This example shows how to add a switch as member 2 with MAC address 00E0.1E00.2222 and the password key to a cluster. The cluster command switch adds the candidate to the cluster through VLAN 3.
Page 79: Cluster Outside-Interface
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster outside-interface cluster outside-interface Use the cluster outside-interface global configuration command to configure the outside interface for cluster Network Address Translation (NAT) so that a member without an IP address can communicate with devices outside the cluster.
Page 80: Cluster Run
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster run cluster run Use the cluster run global configuration command to enable clustering on a switch. Use the no form of this command to disable clustering on a switch. cluster run...
Page 81: Cluster Standby-Group
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster standby-group cluster standby-group Use the cluster standby-group global configuration command to enable cluster command-switch redundancy by binding the cluster to an existing Hot Standby Router Protocol (HSRP). Entering the routing-redundancy keyword enables the same HSRP group to be used for cluster command-switch redundancy and routing redundancy.
Page 82 Related Commands Command Description standby ip Enables HSRP on the interface. For syntax information, select Cisco IOS IP Command Reference, Volume 1 of 3:Addressing and Services, Release 12.2 > IP Services Commands. show cluster Displays the cluster status and a summary of the cluster to which the switch belongs.
Page 83: Cluster Timer
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands cluster timer cluster timer Use the cluster timer global configuration command to set the interval in seconds between heartbeat messages. Use the no form of this command to set the interval to the default value.
Page 84: Define Interface-Range
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands define interface-range define interface-range Use the define interface-range global configuration command to create an interface-range macro. Use the no form of this command to delete the defined macro. define interface-range macro-name interface-range...
Page 85 Executes a command on multiple ports at the same time. show running-config Displays the current operating configuration, including defined macros. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 86: Delete
The prompting behavior depends on the setting of the file prompt global configuration command. By default, the switch prompts for confirmation on destructive file operations. For more information about this command, see the Cisco IOS Command Reference for Release 12.1. Examples...
Page 87: Deny (Mac Access-List Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands deny (MAC access-list configuration) deny (MAC access-list configuration) Use the deny MAC access-list configuration command to prevent non-IP traffic from being forwarded if the conditions are matched. Use the no form of this command to remove a deny condition from the named MAC access list.
Page 88 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands deny (MAC access-list configuration) lsap lsap-number mask (Optional) Use the LSAP number (0 to 65535) of a packet with 802.2 encapsulation to identify the protocol of the packet. mask is a mask of don’t care bits applied to the LSAP number before testing for a match.
Page 89 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands deny (MAC access-list configuration) Usage Guidelines You enter MAC-access list configuration mode by using the mac access-list extended global configuration command. If you use the host keyword, you cannot enter an address mask; if you do not use the host keyword, you must enter an address mask.
Page 90: Dot1X
Before globally enabling IEEE 802.1x on a switch, remove the EtherChannel configuration from the interfaces on which IEEE 802.1x and EtherChannel are configured. If you are using a device running the Cisco Access Control Server (ACS) application for IEEE 802.1x authentication with EAP-Transparent LAN Services (TLS) and with EAP-MD5, make sure that the device is running ACS Version 3.2.1 or later.
Page 91 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x Related Commands Command Description dot1x guest-vlan Enables and specifies an active VLAN as an IEEE 802.1x guest VLAN. dot1x port-control Enables manual control of the authorization state of the port. show dot1x [interface Displays IEEE 802.1x status for the specified port.
Page 92: Dot1X Default
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x default dot1x default Use the dot1x default interface configuration command to reset the IEEE 802.1x parameters to their default values. dot1x default Syntax Description This command has no arguments or keywords.
Page 93: Dot1X Guest-Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x guest-vlan dot1x guest-vlan Use the dot1x guest-vlan interface configuration command to specify an active VLAN as an IEEE 802.1x guest VLAN. Use the no form of this command to return to the default setting.
Page 94 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x guest-vlan After you configure a guest VLAN for an IEEE 802.1x port to which a DHCP client is connected, you might need to get a host IP address from a DHCP server. You can change the settings for restarting the IEEE 802.1x authentication process on the switch before the DHCP process on the client times out and...
Page 95: Dot1X Host-Mode
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x host-mode dot1x host-mode Use the dot1x host-mode interface configuration command to allow a single host (client) or multiple hosts on an IEEE 802.1x-authorized port that has the dot1x port-control interface configuration command set to auto.
Page 96: Dot1X Initialize
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x initialize dot1x initialize Use the dot1x initialize privileged EXEC command to manually return the specified IEEE 802.1x-enabled port to an unauthorized state before initiating a new authentication session on the port.
Page 97: Dot1X Max-Reauth-Req
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x max-reauth-req dot1x max-reauth-req Use the dot1x max-reauth-req interface configuration command to set the maximum number of times that the switch restarts the authentication process before a port changes to the unauthorized state. Use the no form of this command to return to the default setting.
Page 98: Dot1X Max-Req
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x max-req dot1x max-req Use the dot1x max-req interface configuration command to set the maximum number of times that the switch sends an Extensible Authentication Protocol (EAP) frame from the authentication server (assuming that no response is received) to the client before restarting the authentication process.
Page 99: Dot1X Port-Control
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x port-control dot1x port-control Use the dot1x port-control interface configuration command to enable manual control of the authorization state of the port. Use the no form of this command to return to the default setting.
Page 100 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x port-control EtherChannel port—Do not configure a port that is an active or a not-yet-active member of an • EtherChannel as an IEEE 802.1x port. If you try to enable IEEE 802.1x on an EtherChannel port, an error message appears, and IEEE 802.1x is not enabled.
Page 101: Dot1X Re-Authenticate
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x re-authenticate dot1x re-authenticate Use the dot1x re-authenticate privileged EXEC command to manually initiate a re-authentication of the specified IEEE 802.1x-enabled port. dot1x re-authenticate interface interface-id Syntax Description interface interface-id Module and port number of the interface to re-authenticate.
Page 102: Dot1X Reauthentication
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x reauthentication dot1x reauthentication Use the dot1x reauthentication interface configuration command to enable periodic re-authentication of the client. Use the no form of this command to return to the default setting. dot1x reauthentication...
Page 103: Dot1X Timeout
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x timeout dot1x timeout Use the dot1x timeout interface configuration command to set IEEE 802.1x timers. Use the no form of this command to return to the default setting. dot1x timeout {quiet-period seconds | reauth-period seconds | server-timeout seconds |...
Page 104 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands dot1x timeout Examples This example shows how to enable periodic re-authentication and to set 4000 as the number of seconds between re-authentication attempts: Switch(config-if)# dot1x reauthentication Switch(config-if)# dot1x timeout reauth-period 4000 This example shows how to set 30 seconds as the quiet time on the switch:...
Page 105: Duplex
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands duplex duplex Use the duplex interface configuration command to specify the duplex mode of operation for a port. Use the no form of this command to return the port to its default value.
Page 106 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands duplex If both ends of the line support autonegotiation, we highly recommend using the default autonegotiation settings. If one interface supports autonegotiation and the other end does not, configure duplex and speed on both interfaces;...
Page 107: Errdisable Detect Cause
Enable error detection for the Dynamic Trunking Protocol (DTP) flapping. gbic-invalid Enable error detection for an invalid Gigabit Interface Converter (GBIC) module. On the Catalyst 2960 switch, this error refers to an invalid small Note form-factor pluggable (SFP) module. link-flap Enable error detection for link-state flapping.
Page 108 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands errdisable detect cause Examples This example shows how to enable error-disabled detection for the link-flap error-disabled cause: Switch(config)# errdisable detect cause link-flap You can verify your setting by entering the show errdisable detect privileged EXEC command.
Page 109: Errdisable Recovery
Enable the timer to recover from an invalid Gigabit Interface Converter (GBIC) module error-disabled state. On the Catalyst 2960 switch, this error refers to an invalid small Note form-factor pluggable (SFP) error-disabled state. link-flap Enable the timer to recover from the link-flap error-disabled state.
Page 110 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands errdisable recovery Though visible in the command-line help strings, the ilpower, storm-control, and unicast-flood Note keywords are not supported. Defaults Recovery is disabled for all causes. The default recovery interval is 300 seconds.
Page 111: Flowcontrol
This prevents any loss of data packets during the congestion period. Use the receive off keywords to disable flow control. flowcontrol receive {desired | off | on} The Catalyst 2960 switch can receive, but not send, pause frames. Note Syntax Description receive Set whether the interface can receive flow-control packets from a remote device.
Page 112 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands flowcontrol Table 2-5 shows the flow control results on local and remote ports for a combination of settings. The table assumes that receive desired has the same results as using the receive on keywords.
Page 113: Interface Port-Channel
Only one port channel in a channel group is allowed. Follow these guidelines when you use the interface port-channel command: If you want to use the Cisco Discovery Protocol (CDP), you must configure it only on the physical • port and not on the port-channel interface.
Page 114 Displays EtherChannel information for a channel. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands. Catalyst 2960 Switch Command Reference...
Page 115: Interface Range
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands interface range interface range Use the interface range global configuration command to enter interface range configuration mode and to execute a command on multiple ports at the same time. Use the no form of this command to remove an interface range.
Page 116 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands interface range Valid values for port-range type and interface: vlan vlan-ID, where VLAN ID is from 1 to 4094 • Although the command-line interface (CLI) shows options to set multiple VLANs, these are Note not supported.
Page 117 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands interface range Related Commands Command Description define interface-range Creates an interface range macro. show running-config Displays the configuration information currently running on the switch. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 >...
Page 118: Interface Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands interface vlan interface vlan Use the interface vlan global configuration command to create or access a VLAN and to enter interface configuration mode. Use the no form of this command to delete a VLAN.
Page 119: Ip Access-Group
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip access-group ip access-group Use the ip access-group interface configuration command to control access to a Layer 2 interface. Use the no form of this command to remove all access groups or the specified access group from the interface.
Page 120 IOS IP Command Reference, Volume 1 of 3:Addressing and Services, Release 12.2 > IP Services Commands ip access-list Configures a named ACL. For syntax information, select Cisco IOS IP Command Reference, Volume 1 of 3:Addressing and Services, Release 12.2 > IP Services Commands.
Page 121: Ip Address
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip address ip address Use the ip address interface configuration command to set an IP address for the Layer 2 switch. Use the no form of this command to remove an IP address or to disable IP processing.
Page 122 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip address Examples This example shows how to configure the IP address for the Layer 2 switch on a subnetted network: Switch(config)# interface vlan 1 Switch(config-if)# ip address 172.20.128.2 255.255.255.0 You can verify your settings by entering the show running-config privileged EXEC command.
Page 123: Ip Dhcp Snooping
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping ip dhcp snooping Use the ip dhcp snooping global configuration command to globally enable DHCP snooping. Use the no form of this command to return to the default setting.
Page 124: Ip Dhcp Snooping Binding
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping binding ip dhcp snooping binding Use the ip dhcp snooping binding privileged EXEC command to configure the DHCP snooping binding database and to add binding entries to the database. Use the no form of this command to delete entries from the binding database.
Page 125 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping binding Examples This example shows how to generate a DHCP binding configuration with an expiration time of 1000 seconds on a port in VLAN 1: Switch# ip dhcp snooping binding 0001.1234.1234 vlan 1 172.20.50.5 interface...
Page 126: Ip Dhcp Snooping Database
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping database ip dhcp snooping database Use the ip dhcp snooping database global configuration command to configure the DHCP snooping binding database agent. Use the no form of this command to disable the agent, to reset the timeout value, or to reset the write-delay value.
Page 127 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping database Usage Guidelines The DHCP snooping binding database can have up to 8192 bindings. To ensure that the lease time in the database is accurate, we recommend that Network Time Protocol...
Page 128: Ip Dhcp Snooping Information Option
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping information option ip dhcp snooping information option Use the ip dhcp snooping information option global configuration command to enable DHCP option-82 data insertion. Use the no form of this command to disable DHCP option-82 data insertion.
Page 129 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping information option Related Commands Command Description show ip dhcp snooping Displays the DHCP snooping configuration. show ip dhcp snooping binding Displays the DHCP snooping binding information. Catalyst 2960 Switch Command Reference...
Page 130: Ip Dhcp Snooping Information Option Allow-Untrusted
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping information option allow-untrusted ip dhcp snooping information option allow-untrusted Use the ip dhcp snooping information option allow-untrusted global configuration command on an aggregation switch to configure it to accept DHCP packets with option-82 information that are received on untrusted ports that might be connected to an edge switch.
Page 131 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping information option allow-untrusted Related Commands Command Description show ip dhcp snooping Displays the DHCP snooping configuration. show ip dhcp snooping binding Displays the DHCP snooping binding information. Catalyst 2960 Switch Command Reference...
Page 132: Ip Dhcp Snooping Limit Rate
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping limit rate ip dhcp snooping limit rate Use the ip dhcp snooping limit rate interface configuration command to configure the number of DHCP messages an interface can receive per second. Use the no form of this command to return to the default setting.
Page 133: Ip Dhcp Snooping Trust
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping trust ip dhcp snooping trust Use the ip dhcp snooping trust interface configuration command to configure a port as trusted for DHCP snooping purposes. Use the no form of this command to return to the default setting.
Page 134: Ip Dhcp Snooping Verify
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping verify ip dhcp snooping verify Use the ip dhcp snooping verify global configuration command to configure the switch to verify on an untrusted port that the source MAC address in a DHCP packet matches the client hardware address. Use the no form of this command to configure the switch to not verify the MAC addresses.
Page 135: Ip Dhcp Snooping Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip dhcp snooping vlan ip dhcp snooping vlan Use the ip dhcp snooping vlan global configuration command to enable DHCP snooping on a VLAN. Use the no form of this command to return to the default setting.
Page 136: Ip Igmp Filter
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp filter ip igmp filter Use the ip igmp filter interface configuration command to control whether or not all hosts on a Layer 2 interface can join one or more IP multicast groups by applying an Internet Group Management Protocol (IGMP) profile to the interface.
Page 137: Ip Igmp Max-Groups
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp max-groups ip igmp max-groups Use the ip igmp max-groups interface configuration command to set the maximum number of Internet Group Management Protocol (IGMP) groups that a Layer 2 interface can join or to configure the IGMP throttling action when the maximum number of entries is in the forwarding table.
Page 138 Displays the running configuration on the switch interface, including interface-id the maximum number of IGMP groups that an interface can join and the throttling action. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 139: Ip Igmp Profile
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp profile ip igmp profile Use the ip igmp profile global configuration command to create an Internet Group Management Protocol (IGMP) profile and enter IGMP profile configuration mode. From this mode, you can specify the configuration of the IGMP profile to be used for filtering IGMP membership reports from a switchport.
Page 140 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp profile Related Commands Command Description ip igmp filter Applies the IGMP profile to the specified interface. show ip igmp profile Displays the characteristics of all IGMP profiles or the specified IGMP profile number.
Page 141: Ip Igmp Snooping
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping ip igmp snooping Use the ip igmp snooping global configuration command to globally enable Internet Group Management Protocol (IGMP) snooping on the switch or to enable it on a per-VLAN basis. Use the no form of this command to return to the default setting.
Page 142 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping Related Commands Command Description ip igmp snooping report-suppression Enables IGMP report suppression. show ip igmp snooping Displays the snooping configuration. show ip igmp snooping groups Displays IGMP snooping multicast information.
Page 143: Ip Igmp Snooping Last-Member-Query-Interval
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping last-member-query-interval ip igmp snooping last-member-query-interval Use the ip igmp snooping last-member-query-interval global configuration command to enable the Internet Group Management Protocol (IGMP) configurable-leave timer globally or on a per-VLAN basis.
Page 144 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping last-member-query-interval Related Commands Command Description ip igmp snooping Enables IGMP snooping on the switch or on a VLAN. ip igmp snooping vlan immediate-leave Enables IGMP Immediate-Leave processing. ip igmp snooping vlan mrouter Configures a Layer 2 port as a multicast router port.
Page 145: Ip Igmp Snooping Querier
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping querier ip igmp snooping querier Use the ip igmp snooping querier global configuration command to globally enable the Internet Group Management Protocol (IGMP) querier function in Layer 2 networks. Use the command with keywords to enable and configure the IGMP querier feature on a VLAN interface.
Page 146 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping querier Usage Guidelines Use this command to enable IGMP snooping to detect the IGMP version and IP address of a device that sends IGMP query messages, which is also called a querier.
Page 147: Ip Igmp Snooping Report-Suppression
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping report-suppression ip igmp snooping report-suppression Use the ip igmp snooping report-suppression global configuration command to enable Internet Group Management Protocol (IGMP) report suppression. Use the no form of this command to disable IGMP report suppression and to forward all IGMP reports to multicast routers.
Page 148 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping report-suppression Related Commands Command Description ip igmp snooping Enables IGMP snooping on the switch or on a VLAN. show ip igmp snooping Displays the IGMP snooping configuration of the switch or the VLAN.
Page 149: Ip Igmp Snooping Tcn
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping tcn ip igmp snooping tcn Use the ip igmp snooping tcn global configuration command to configure the Internet Group Management Protocol (IGMP) Topology Change Notification (TCN) behavior. Use the no form of this command to return to the default settings.
Page 150 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping tcn Related Commands Command Description ip igmp snooping Enables IGMP snooping on the switch or on a VLAN. ip igmp snooping tcn flood Specifies flooding on an interface as the IGMP snooping spanning-tree TCN behavior.
Page 151: Ip Igmp Snooping Tcn Flood
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping tcn flood ip igmp snooping tcn flood Use the ip igmp snooping tcn flood interface configuration command to specify multicast flooding as the Internet Group Management Protocol (IGMP) snooping spanning-tree Topology Change Notification (TCN) behavior.
Page 152: Ip Igmp Snooping Vlan Immediate-Leave
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping vlan immediate-leave ip igmp snooping vlan immediate-leave Use the ip igmp snooping immediate-leave global configuration command to enable Internet Group Management Protocol (IGMP) snooping immediate-leave processing on a per-VLAN basis. Use the no form of this command to return to the default setting.
Page 153: Ip Igmp Snooping Vlan Mrouter
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping vlan mrouter ip igmp snooping vlan mrouter Use the ip igmp snooping mrouter global configuration command to add a multicast router port or to configure the multicast learning method. Use the no form of this command to return to the default settings.
Page 154 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping vlan mrouter Examples This example shows how to configure a port as a multicast router port: Switch(config)# ip igmp snooping vlan 1 mrouter interface gigabitethernet0/2 This example shows how to specify the multicast router learning method as CGMP: Switch(config)# ip igmp snooping vlan 1 mrouter learn cgmp You can verify your settings by entering the show ip igmp snooping privileged EXEC command.
Page 155: Ip Igmp Snooping Vlan Static
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping vlan static ip igmp snooping vlan static Use the ip igmp snooping static global configuration command to enable Internet Group Management Protocol (IGMP) snooping and to statically add a Layer 2 port as a member of a multicast group. Use the no form of this command to remove ports specified as members of a static multicast group.
Page 156 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip igmp snooping vlan static Related Commands Command Description ip igmp snooping report-suppression Enables IGMP report suppression. show ip igmp snooping Displays the snooping configuration. show ip igmp snooping groups Displays IGMP snooping multicast information.
Page 157: Ip Ssh
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands ip ssh ip ssh Use the ip ssh global configuration command to configure the switch to run Secure Shell (SSH) Version 1 or SSH Version 2. This command is available only when your switch is running the cryptographic (encrypted) software image.
Page 158 Features > Secure Shell Commands. show ssh Displays the status of the SSH server. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Security Command Reference, Release 12.2 > Other Security Features >...
Page 159: Lacp Port-Priority
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands lacp port-priority lacp port-priority Use the lacp port-priority interface configuration command to configure the port priority for the Link Aggregation Control Protocol (LACP). Use the no form of this command to return to the default setting.
Page 160 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands lacp port-priority Examples This example shows how to configure the LACP port priority on a port: Switch(config)# interface gigabitethernet0/1 Switch(config-if)# lacp port-priority 1000 You can verify your settings by entering the show lacp [channel-group-number] internal privileged EXEC command.
Page 161: Lacp System-Priority
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands lacp system-priority lacp system-priority Use the lacp system-priority global configuration command to configure the system priority for the Link Aggregation Control Protocol (LACP). Use the no form of this command to return to the default setting.
Page 162 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands lacp system-priority Related Commands Command Description channel-group Assigns an Ethernet port to an EtherChannel group. lacp port-priority Configures the LACP port priority. show lacp sys-id Displays the system identifier that is being used by LACP.
Page 163: Logging File
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands logging file logging file Use the logging file global configuration command to set logging file parameters. Use the no form of this command to return to the default setting. logging file filesystem:filename [max-file-size | nomax [min-file-size]] [severity-level-number |...
Page 164 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands logging file Usage Guidelines The log file is stored in ASCII text format in an internal buffer on the switch. You can access logged system messages by using the switch command-line interface (CLI) or by saving them to a properly configured syslog server.
Page 165: Mac Access-Group
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac access-group mac access-group Use the mac access-group interface configuration command to apply a MAC access control list (ACL) to a Layer 2 interface. Use the no form of this command to remove all MAC ACLs or the specified MAC ACL from the interface.
Page 166 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac access-group You can verify your settings by entering the show mac access-group privileged EXEC command. You can see configured ACLs on the switch by entering the show access-lists privileged EXEC command.
Page 167: Mac Access-List Extended
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac access-list extended mac access-list extended Use the mac access-list extended global configuration command to create an access list based on MAC addresses for non-IP traffic. Using this command puts you in the extended MAC access-list configuration mode.
Page 168 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac access-list extended This example shows how to delete MAC named extended access list mac1: Switch(config)# no mac access-list extended mac1 You can verify your settings by entering the show access-lists privileged EXEC command.
Page 169: Mac Address-Table Aging-Time
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table aging-time mac address-table aging-time Use the mac address-table aging-time global configuration command to set the length of time that a dynamic entry remains in the MAC address table after the entry is used or updated. Use the no form of this command to return to the default setting.
Page 170: Mac Address-Table Notification
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table notification mac address-table notification Use the mac address-table notification global configuration command to enable the MAC address notification feature on the switch. Use the no form of this command to return to the default setting.
Page 171 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table notification You can verify your settings by entering the show mac address-table notification privileged EXEC command. Related Commands Command Description clear mac address-table notification Clears the MAC address notification global counters.
Page 172: Mac Address-Table Static
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table static mac address-table static Use the mac address-table static global configuration command to add static addresses to the MAC address table. Use the no form of this command to remove static entries from the table.
Page 173: Mac Address-Table Static Drop
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table static drop mac address-table static drop Use the mac address-table static drop global configuration command to enable unicast MAC address filtering and to configure the switch to drop traffic with a specific source or destination MAC address.
Page 174 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mac address-table static drop Examples This example shows how to enable unicast MAC address filtering and to configure the switch to drop packets that have a source or destination address of c2f3.220a.12f4. When a packet is received in VLAN 4 with this MAC address as its source or destination, the packet is dropped: Switch(config)# mac address-table static c2f3.220a.12f4 vlan 4 drop...
Page 175: Macro Apply
There are Cisco-default Smartports macros embedded in the switch software. You can display these macros and the commands they contain by using the show parser macro user EXEC command.
Page 176 Applying command...‘duplex auto’ %Error Unknown error. Applying command...‘speed nonegotiate’ This example shows how to display the Cisco-default cisco-desktop macro and how to apply the macro and set the access VLAN ID to 25 on an interface: Switch# show parser macro cisco-desktop...
Page 177 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro apply # Ensure port-security age is greater than one minute # and use inactivity timer switchport port-security violation restrict switchport port-security aging time 2 switchport port-security aging type inactivity # Configure port as an edge network port...
Page 178: Macro Description
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro description macro description Use the macro description interface configuration command to enter a description about which macros are applied to an interface. Use the no form of this command to remove the description.
Page 179: Macro Global
There are Cisco-default Smartports macros embedded in the switch software. You can display these macros and the commands they contain by using the show parser macro user EXEC command.
Page 180 Cisco-default macro with the required values by using the parameter value keywords. The Cisco-default macros use the $ character to help identify required keywords. There is no restriction on using the $ character to define keywords when you create a macro.
Page 181 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro global Related Commands Command Description macro apply Applies a macro on an interface or applies and traces a macro on an interface. macro description Adds a description about the macros that are applied to an interface.
Page 182: Macro Global Description
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro global description macro global description Use the macro global description global configuration command to enter a description about the macros that are applied to the switch. Use the no form of this command to remove the description.
Page 183: Macro Name
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro name macro name Use the macro name global configuration command to create a configuration macro. Use the no form of this command to delete the macro definition. macro name macro-name no macro name macro-name...
Page 184 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands macro name Examples This example shows how to create a macro that defines the duplex mode and speed: Switch(config)# macro name duplex Enter macro commands one per line. End with the character ‘@’.
Page 185: Match (Class-Map Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands match (class-map configuration) match (class-map configuration) Use the match class-map configuration command to define the match criteria to classify traffic. Use the no form of this command to remove the match criteria.
Page 186 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands match (class-map configuration) Examples This example shows how to create a class map called class2, which matches all the incoming traffic with DSCP values of 10, 11, and 12: Switch(config)# class-map class2...
Page 187: Mdix Auto
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mdix auto mdix auto Use the mdix auto interface configuration command to enable the automatic medium-dependent interface crossover (auto-MDIX) feature on the interface. When auto-MDIX is enabled, the interface automatically detects the required cable connection type (straight-through or crossover) and configures the connection appropriately.
Page 188 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mdix auto Related Commands Command Description show controllers Displays general information about internal registers of an interface, ethernet-controller including the operational state of auto-MDIX. interface-id phy Catalyst 2960 Switch Command Reference 2-160...
Page 189: Media-Type
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands media-type media-type Use the media-type interface configuration command to manually select the interface and type of a dual-purpose uplink port or to enable the switch to dynamically select the type that first links up. Use the no form of this command to return to the default setting.
Page 190 If you configure auto-select, you cannot configure the speed and duplex interface configuration commands. The Catalyst 2960 switch operates with 100BASE-X (where -X is -BX, -FX-FE, -LX) SFP modules as follows: When the 100BASE -X SFP module is inserted into the module slot and there is no link on the RJ-45 •...
Page 191: Mls Qos
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos mls qos Use the mls qos global configuration command to enable quality of service (QoS) for the entire switch. When the mls qos command is entered, QoS is enabled with the default parameters on all ports in the system.
Page 192 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos Related Commands Command Description show mls qos Displays QoS information. Catalyst 2960 Switch Command Reference 2-164 78-16882-01...
Page 193: Mls Qos Aggregate-Policer
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos aggregate-policer mls qos aggregate-policer Use the mls qos aggregate-policer global configuration command to define policer parameters, which can be shared by multiple classes within the same policy map. A policer defines a maximum permissible rate of transmission, a maximum burst size for transmissions, and an action to take if either maximum is exceeded.
Page 194 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos aggregate-policer You cannot delete an aggregate policer if it is being used in a policy map. You must first use the no police aggregate aggregate-policer-name policy-map class configuration command to delete the aggregate policer from all policy maps before using the no mls qos aggregate-policer aggregate-policer-name command.
Page 195: Mls Qos Cos
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos cos mls qos cos Use the mls qos cos interface configuration command to define the default class of service (CoS) value of a port or to assign the default CoS to all incoming packets on the port. Use the no form of this command to return to the default setting.
Page 196 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos cos This example shows how to assign all the packets entering a port to the default port CoS value of 4 on a port: Switch(config)# interface gigabitethernet0/1 Switch(config-if)# mls qos cos 4 Switch(config-if)# mls qos cos override You can verify your settings by entering the show mls qos interface privileged EXEC command.
Page 197: Mls Qos Dscp-Mutation
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos dscp-mutation mls qos dscp-mutation Use the mls qos dscp-mutation interface configuration command to apply a Differentiated Services Code Point (DSCP)-to-DSCP-mutation map to a DSCP-trusted port. Use the no form of this command to return the map to the default settings (no DSCP mutation).
Page 198 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos dscp-mutation This example show how to remove the DSCP-to-DSCP-mutation map name dscpmutation1 from the port and to reset the map to the default: Switch(config-if)# no mls qos dscp-mutation dscpmutation1 You can verify your settings by entering the show mls qos maps privileged EXEC command.
Page 199: Mls Qos Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos map mls qos map Use the mls qos map global configuration command to define the class of service (CoS)-to-Differentiated Services Code Point (DSCP) map, DSCP-to-CoS map, the DSCP-to-DSCP-mutation map, the IP-precedence-to-DSCP map, and the policed-DSCP map. Use the no form of this command to return to the default map.
Page 200 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos map Defaults Table 2-6 shows the default CoS-to-DSCP map: Table 2-6 Default CoS-to-DSCP Map CoS Value DSCP Value Table 2-7 shows the default DSCP-to-CoS map: Table 2-7 Default DSCP-to-CoS Map...
Page 201 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos map The default DSCP-to-DSCP-mutation map is a null map, which maps an incoming DSCP value to the same DSCP value. The default policed-DSCP map is a null map, which maps an incoming DSCP value to the same DSCP value.
Page 202 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos map Related Commands Command Description mls qos dscp-mutation Applies a DSCP-to-DSCP-mutation map to a DSCP-trusted port. show mls qos maps Displays quality of service (QoS) mapping information. Catalyst 2960 Switch Command Reference...
Page 203: Mls Qos Queue-Set Output Buffers
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos queue-set output buffers mls qos queue-set output buffers Use the mls qos queue-set output buffers global configuration command to allocate buffers to a queue-set (four egress queues per port). Use the no form of this command to return to the default setting.
Page 204 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos queue-set output buffers Examples This example shows how to map a port to queue-set 2. It allocates 40 percent of the buffer space to egress queue 1 and 20 percent to egress queues 2, 3, and 4:...
Page 205: Mls Qos Queue-Set Output Threshold
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos queue-set output threshold mls qos queue-set output threshold Use the mls qos queue-set output threshold global configuration command to configure the weighted tail-drop (WTD) thresholds, to guarantee the availability of buffers, and to configure the maximum memory allocation to a queue-set (four egress queues per port).
Page 206 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos queue-set output threshold Usage Guidelines Use the mls qos queue-set output qset-id buffers global configuration command to allocate a fixed number of buffers to the four queues in a queue-set.
Page 207: Mls Qos Rewrite Ip Dscp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos rewrite ip dscp mls qos rewrite ip dscp Use the mls qos rewrite ip dscp global configuration command to configure the switch to change (rewrite) the Differentiated Services Code Point (DSCP) field of an incoming IP packet. Use the no form of this command to configure the switch to not modify (rewrite) the DSCP field of the packet and to enable DSCP transparency.
Page 208 | Displays the DSCP transparency setting. For syntax information, select include rewrite Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 209: Mls Qos Srr-Queue Input Bandwidth
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input bandwidth mls qos srr-queue input bandwidth Use the mls qos srr-queue input bandwidth global configuration command to assign shaped round robin (SRR) weights to an ingress queue. The ratio of the weights is the ratio of the frequency in which the SRR scheduler dequeues packets from each queue.
Page 210 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input bandwidth This example shows how to assign the ingress bandwidths for the queues. Queue 1 is the priority queue with 10 percent of the bandwidth allocated to it. The bandwidth ratio allocated to queues 1 and 2 is 4/(4+4).
Page 211: Mls Qos Srr-Queue Input Buffers
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input buffers mls qos srr-queue input buffers Use the mls qos srr-queue input buffers global configuration command to allocate the buffers between the ingress queues. Use the no form of this command to return to the default setting.
Page 212 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input buffers Command Description show mls qos input-queue Displays ingress queue settings. show mls qos interface buffers Displays quality of service (QoS) information. Catalyst 2960 Switch Command Reference 2-184...
Page 213: Mls Qos Srr-Queue Input Cos-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input cos-map mls qos srr-queue input cos-map Use the mls qos srr-queue input cos-map global configuration command to map class of service (CoS) values to an ingress queue or to map CoS values to a queue and to a threshold ID. Use the no form of this command to return to the default setting.
Page 214 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input cos-map Usage Guidelines The CoS assigned at the ingress port selects an ingress or egress queue and threshold. The drop-threshold percentage for threshold 3 is predefined. It is set to the queue-full state. You can assign two weighted tail-drop (WTD) threshold percentages to an ingress queue by using the mls qos srr-queue input threshold global configuration command.
Page 215: Mls Qos Srr-Queue Input Dscp-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input dscp-map mls qos srr-queue input dscp-map Use the mls qos srr-queue input dscp-map global configuration command to map Differentiated Services Code Point (DSCP) values to an ingress queue or to map DSCP values to a queue and to a threshold ID.
Page 216 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input dscp-map You can map each DSCP value to a different queue and threshold combination, allowing the frame to follow different behavior. You can map up to eight DSCP values per command.
Page 217: Mls Qos Srr-Queue Input Priority-Queue
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input priority-queue mls qos srr-queue input priority-queue Use the mls qos srr-queue input priority-queue global configuration command to configure the ingress priority queue and to guarantee bandwidth on the internal ring if the ring is congested. Use the no form of this command to return to the default setting.
Page 218 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input priority-queue You can verify your settings by entering the show mls qos interface [interface-id] queueing or the show mls qos input-queue privileged EXEC command. Related Commands Command Description...
Page 219: Mls Qos Srr-Queue Input Threshold
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input threshold mls qos srr-queue input threshold Use the mls qos srr-queue input threshold global configuration command to assign weighted tail-drop (WTD) threshold percentages to an ingress queue. Use the no form of this command to return to the default setting.
Page 220 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue input threshold Related Commands Command Description mls qos srr-queue input bandwidth Assigns shaped round robin (SRR) weights to an ingress queue. mls qos srr-queue input buffers Allocates the buffers between the ingress queues.
Page 221: Mls Qos Srr-Queue Output Cos-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue output cos-map mls qos srr-queue output cos-map Use the mls qos srr-queue output cos-map global configuration command to map class of service (CoS) values to an egress queue or to map CoS values to a queue and to a threshold ID. Use the no form of this command to return to the default setting.
Page 222 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue output cos-map Usage Guidelines The drop-threshold percentage for threshold 3 is predefined. It is set to the queue-full state. The egress queue default settings are suitable for most situations. You should change them only when...
Page 223: Mls Qos Srr-Queue Output Dscp-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue output dscp-map mls qos srr-queue output dscp-map Use the mls qos srr-queue output dscp-map global configuration command to map Differentiated Services Code Point (DSCP) values to an egress or to map DSCP values to a queue and to a threshold ID.
Page 224 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mls qos srr-queue output dscp-map Usage Guidelines The drop-threshold percentage for threshold 3 is predefined. It is set to the queue-full state. The egress queue default settings are suitable for most situations. You should change them only when...
Page 225: Mls Qos Trust
(Optional) Classify an ingress packet by trusting the CoS or DSCP value sent from the Cisco IP Phone (trusted boundary), depending on the trust setting. dscp (Optional) Classify an ingress packet by using the packet DSCP value (most significant 6 bits of 8-bit service-type field).
Page 226 The trusted boundary feature prevents security problems if users disconnect their PCs from networked Cisco IP Phones and connect them to the switch port to take advantage of trusted CoS or DSCP settings. You must globally enable the Cisco Discovery Protocol (CDP) on the switch and on the port connected to the IP phone.
Page 227: Monitor Session
Remote SPAN (RSPAN) source or destination session, to enable ingress traffic on the destination port for a network security device (such as a Cisco IDS Sensor Appliance), to add or delete interfaces or VLANs to or from an existing SPAN or RSPAN session, and to limit (filter) SPAN source traffic to specific VLANs.
Page 228 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands monitor session dot1q vlan vlan-id Accept incoming packets with IEEE 802.1Q encapsulation with the specified VLAN as the default VLAN. untagged vlan vlan-id Accept incoming untagged encapsulation with the specified VLAN as the default VLAN.
Page 229 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands monitor session Usage Guidelines Traffic that enters or leaves source ports or source VLANs can be monitored by using SPAN or RSPAN. Traffic routed to source ports or source VLANs cannot be monitored.
Page 230 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands monitor session When you enter monitor session session_number destination interface interface-id encapsulation • dot1q ingress, egress encapsulation uses the IEEE 802.1Q encapsulation method; ingress encapsulation depends on the keywords that follow—dot1q or untagged. (This applies to local SPAN only;...
Page 231 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands monitor session Related Commands Command Description remote-span Configures an RSPAN VLAN in vlan configuration mode. show monitor Displays SPAN and RSPAN session information. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 >...
Page 232: Mvr (Global Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (global configuration) mvr (global configuration) Use the mvr global configuration command without keywords to enable the multicast VLAN registration (MVR) feature on the switch. Use the command with keywords to set the MVR mode for a switch, configure the MVR IP multicast address, set the maximum time to wait for a query reply before removing a port from group membership, and to specify the MVR multicast VLAN.
Page 233 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (global configuration) Command Modes Global configuration Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines A maximum of 256 MVR multicast groups can be configured on a switch. Use the mvr group command to statically set up all the IP multicast addresses that will take part in MVR.
Page 234 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (global configuration) Related Commands Command Description mvr (interface configuration) Configures MVR ports. show mvr Displays MVR global parameters or port parameters. show mvr interface Displays the configured MVR interfaces with their type, status, and Immediate Leave configuration.
Page 235: Mvr (Interface Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (interface configuration) mvr (interface configuration) Use the mvr interface configuration command to configure a Layer 2 port as a multicast VLAN registration (MVR) receiver or source port, to set the Immediate Leave feature, and to statically assign a port to an IP multicast VLAN and IP address.
Page 236 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (interface configuration) Usage Guidelines Configure a port as a source port if that port should be able to both send and receive multicast data bound for the configured multicast groups. Multicast data is received on all ports configured as source ports.
Page 237 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands mvr (interface configuration) Related Commands Command Description mvr (global configuration) Enables and configures multicast VLAN registration on the switch. show mvr Displays MVR global parameters or port parameters. show mvr interface Displays the configured MVR interfaces or displays the multicast groups to which a receiver port belongs.
Page 238: Pagp Learn-Method
PAgP interoperability with devices that only support address learning by physical ports, such as the Catalyst 1900 switch. When the link partner to the Catalyst 2960 switch is a physical learner, we recommend that you configure the switch as a physical-port learner by using the pagp learn-method physical-port interface configuration command and to set the load-distribution method based on the source MAC address by using the port-channel load-balance src-mac global configuration command.
Page 239 Displays PAgP channel-group information. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands. Catalyst 2960 Switch Command Reference 2-211...
Page 240: Pagp Port-Priority
PAgP interoperability with devices that only support address learning by physical ports, such as the Catalyst 1900 switch. When the link partner to the Catalyst 2960 switch is a physical learner, we recommend that you configure the switch as a physical-port learner by using the pagp learn-method physical-port interface configuration command and to set the load-distribution method based on the source MAC address by using the port-channel load-balance src-mac global configuration command.
Page 241 Displays PAgP channel-group information. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands. Catalyst 2960 Switch Command Reference 2-213...
Page 242: Permit (Mac Access-List Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands permit (MAC access-list configuration) permit (MAC access-list configuration) Use the permit MAC access-list configuration command to allow non-IP traffic to be forwarded if the conditions are matched. Use the no form of this command to remove a permit condition from the extended MAC access list.
Page 243 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands permit (MAC access-list configuration) lsap lsap-number mask (Optional) Use the LSAP number (0 to 65535) of a packet with 802.2 encapsulation to identify the protocol of the packet. The mask is a mask of don’t care bits applied to the LSAP number before testing for a match.
Page 244 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands permit (MAC access-list configuration) After an access control entry (ACE) is added to an access control list, an implied deny-any-any condition exists at the end of the list. That is, if there are no matches, the packets are denied. However, before the first ACE is added, the list permits all packets.
Page 245: Police
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands police police Use the police policy-map class configuration command to define a policer for classified traffic. A policer defines a maximum permissible rate of transmission, a maximum burst size for transmissions, and an action to take if either maximum is exceeded. Use the no form of this command to remove an existing policer.
Page 246 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands police Examples This example shows how to configure a policer that drops packets if traffic exceeds 1 Mbps average rate with a burst size of 20 KB. The DSCPs of incoming packets are trusted, and there is no packet modification.
Page 247: Police Aggregate
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands police aggregate police aggregate Use the police aggregate policy-map class configuration command to apply an aggregate policer to multiple classes in the same policy map. A policer defines a maximum permissible rate of transmission, a maximum burst size for transmissions, and an action to take if either maximum is exceeded.
Page 248 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands police aggregate Switch(config-pmap-c)# trust dscp Switch(config-pmap-c)# police aggregate agg_policer2 Switch(config-pmap-c)# exit You can verify your settings by entering the show mls qos aggregate-policer privileged EXEC command. Related Commands Command Description mls qos aggregate-policer Defines policer parameters, which can be shared by multiple classes within a policy map.
Page 249: Policy-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands policy-map policy-map Use the policy-map global configuration command to create or modify a policy map that can be attached to multiple physical ports and to enter policy-map configuration mode. Use the no form of this command to delete an existing policy map and to return to global configuration mode.
Page 250: Physical Ports
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands policy-map Only one policy map per ingress port is supported. You can apply the same policy map to multiple physical ports. You can apply policy maps to physical ports. A policy map is the same as a port-based policy map.
Page 251 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands policy-map This example shows how to delete policymap2: Switch(config)# no policy-map policymap2 You can verify your settings by entering the show policy-map privileged EXEC command. Related Commands Command Description class Defines a traffic classification match criteria (through the police, set, and trust policy-map class configuration command) for the specified class-map name.
Page 252: Port-Channel Load-Balance
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands port-channel load-balance port-channel load-balance Use the port-channel load-balance global configuration command to set the load-distribution method among the ports in the EtherChannel. Use the no form of this command to return to the default setting.
Page 253 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands port-channel load-balance Related Commands Command Description interface port-channel Accesses or creates the port channel. show etherchannel Displays EtherChannel information for a channel. show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 >...
Page 254: Priority-Queue
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands priority-queue priority-queue Use the priority-queue interface configuration command to enable the egress expedite queue on a port. Use the no form of this command to return to the default setting. priority-queue out...
Page 255 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands priority-queue This example shows how to disable the egress expedite queue after the SRR shaped and shared weights are configured. The shaped mode overrides the shared mode. Switch(config)# interface gigabitethernet0/2 Switch(config-if)# srr-queue bandwidth shape 25 0 0 0...
Page 256: Queue-Set
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands queue-set queue-set Use the queue-set interface configuration command to map a port to a queue-set. Use the no form of this command to return to the default setting. queue-set qset-id no queue-set qset-id...
Page 257: Rcommand
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands rcommand rcommand Use the rcommand user EXEC command to start a Telnet session and to execute commands on a cluster member switch from the cluster command switch. To end the session, enter the exit command.
Page 258 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands rcommand This command will not work if the vty lines of the cluster command switch have access-class configurations. You are not prompted for a password because the cluster member switches inherited the password of the cluster command switch when they joined the cluster.
Page 259: Remote-Span
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands remote-span remote-span Use the remote-span VLAN configuration command to configure a VLAN as a Remote Switched Port Analyzer (RSPAN) VLAN. Use the no form of this command to remove the RSPAN designation from the VLAN.
Page 260 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands remote-span Examples This example shows how to configure a VLAN as an RSPAN VLAN. Switch(config)# vlan 901 Switch(config-vlan)# remote-span This example shows how to remove the RSPAN feature from a VLAN. Switch(config)# vlan 901 Switch(config-vlan)# no remote-span You can verify your settings by entering the show vlan remote-span user EXEC command.
Page 261: Renew Ip Dhcp Snooping Database
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands renew ip dhcp snooping database renew ip dhcp snooping database Use the renew ip dhcp snooping database privileged EXEC command to renew the DHCP snooping binding database. renew ip dhcp snooping database [{flash:/filename | ftp://user:password@host/filename |...
Page 262 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands renew ip dhcp snooping database Related Commands Command Description ip dhcp snooping Enables DHCP snooping on a VLAN. ip dhcp snooping binding Configures the DHCP snooping binding database. show ip dhcp snooping database Displays the status of the DHCP snooping database agent.
Page 263: Rmon Collection Stats
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands rmon collection stats rmon collection stats Use the rmon collection stats interface configuration command to collect Ethernet group statistics, which include usage statistics about broadcast and multicast packets, and error statistics about cyclic redundancy check (CRC) alignment errors and collisions.
Page 264: Sdm Prefer
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands sdm prefer sdm prefer Use the sdm prefer global configuration command to configure the template used in Switch Database Management (SDM) resource allocation. You can use a template to allocate system resources to best support the features being used in your application.
Page 265 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands sdm prefer Examples This example shows how to use the QoS template: Switch(config)# sdm prefer qos Switch(config)# exit Switch# reload You can verify your settings by entering the show sdm prefer privileged EXEC command.
Page 266: Service Password-Recovery
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands service password-recovery service password-recovery Use the service password-recovery global configuration command to enable the password-recovery mechanism (the default). This mechanism allows an end user with physical access to the switch to hold down the Mode button and interrupt the boot process while the switch is powering up and to assign a new password.
Page 267 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands service password-recovery If you use the no service password-recovery command to control end user access to passwords, we Note recommend that you save a copy of the config file in a location away from the switch in case the end user uses the password recovery procedure and sets the system back to default values.
Page 268: Service-Policy
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands service-policy service-policy Use the service-policy interface configuration command to apply a policy map defined by the policy-map command to the input of a physical port. Use the no form of this command to remove the policy map and port association.
Page 269 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands service-policy Related Commands Command Description policy-map Creates or modifies a policy map that can be attached to multiple ports to specify a service policy. show policy-map Displays QoS policy maps. show running-config Displays the running configuration on the switch.
Page 270: Set
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands Use the set policy-map class configuration command to classify IP traffic by setting a Differentiated Services Code Point (DSCP) or an IP-precedence value in the packet. Use the no form of this command to remove traffic classification.
Page 271 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands Examples This example shows how to assign DSCP 10 to all FTP traffic without any policers: Switch(config)# policy-map policy_ftp Switch(config-pmap)# class ftp_class Switch(config-pmap-c)# set dscp 10 Switch(config-pmap)# exit You can verify your settings by entering the show policy-map privileged EXEC command.
Page 272: Setup
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands setup setup Use the setup privileged EXEC command to configure the switch with its initial configuration. setup Syntax Description This command has no arguments or keywords. Command Modes Privileged EXEC Command History...
Page 273 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands setup Would you like to enter basic management setup? [yes/no]: yes Configuring global parameters: Enter host name [Switch]: host-name The enable secret is a password used to protect access to privileged EXEC and configuration modes. This password, after entered, becomes encrypted in the configuration.
Page 274 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands setup interface GigabitEthernet0/2 no ip address cluster enable cluster-name Use this configuration? [yes/no]: yes [0] Go to the IOS command prompt without saving this config. [1] Return back to the setup without saving this config.
Page 275: Setup Express
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands setup express setup express Use the setup express global configuration command to enable Express Setup mode. Use the no form of this command to disable Express Setup mode. setup express no setup express Syntax Description This command has no arguments or keywords.
Page 276 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands setup express Examples This example shows how to enable Express Setup mode: Switch(config)# setup express You can verify that Express Setup mode is enabled by pressing the Mode button: On an unconfigured switch, the LEDs above the Mode button turn solid green after 3 seconds.
Page 277: Show Access-Lists
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show access-lists show access-lists Use the show access-lists privileged EXEC command to display access control lists (ACLs) configured on the switch. show access-lists [name | number | hardware counters | ipc] [ | {begin | exclude | include}...
Page 278 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show access-lists 10 permit 1.1.1.1 Standard IP access list videowizard_10-10-10-10 10 permit 10.10.10.10 Extended IP access list 121 10 permit ahp host 10.10.10.10 host 20.20.10.10 precedence routine Extended IP access list CMP-NAT-ACL...
Page 279 Commands. ip access list Configures a named IP access list on the switch. For syntax information, select Cisco IOS IP Command Reference, Volume 1 of 3:Addressing and Services, Release 12.2 > IP Services Commands. mac access-list extended Configures a named or numbered MAC access list on the switch.
Page 280: Show Archive Status
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show archive status show archive status Use the show archive status privileged EXEC command to display the status of a new image being downloaded to a switch with the HTTP or the TFTP protocol.
Page 281: Show Auto Qos
• Examples This is an example of output from the show auto qos command after the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered: Switch> show auto qos GigabitEthernet0/4...
Page 282 GigabitEthernet0/5 auto qos voip cisco-phone This is an example of output from the show running-config privileged EXEC command when the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered: Switch# show running-config Building configuration...
Page 283 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show auto qos class-map match-all AutoQoS-VoIP-RTP-Trust match ip dscp ef class-map match-all AutoQoS-VoIP-Control-Trust match ip dscp cs3 af31 policy-map AutoQoS-Police-SoftPhone class AutoQoS-VoIP-RTP-Trust set dscp ef police 320000 8000 exceed-action policed-dscp-transmit class AutoQoS-VoIP-Control-Trust...
Page 284 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show auto qos These are examples of output from the show auto qos interface interface-id command when auto-QoS is disabled on an interface: Switch> show auto qos interface gigabitethernet0/1 AutoQoS is disabled...
Page 285: Show Boot
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show boot show boot Use the show boot privileged EXEC command to display the settings of the boot environment variables. show boot [ | {begin | exclude | include} expression] Syntax Description | begin (Optional) Display begins with the line that matches the expression.
Page 286 Helper files extend or patch the functionality of the boot loader. NVRAM/Config file buffer size Displays the buffer size that Cisco IOS uses to hold a copy of the configuration file in memory. The configuration file cannot be larger than the buffer size allocation.
Page 287: Show Cable-Diagnostics Tdr
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cable-diagnostics tdr show cable-diagnostics tdr Use the show cable-diagnostics tdr privileged EXEC command to display the Time Domain Reflector (TDR) results. show cable-diagnostics tdr interface interface-id [ | {begin | exclude | include} expression]...
Page 288 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cable-diagnostics tdr Table 2-17 Fields Descriptions for the show cable-diagnostics tdr Command Output (continued) Field Description Pair length Location on the cable where the problem is, with respect to your switch. TDR can only find the location in one of these cases: •...
Page 289: Show Class-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show class-map show class-map Use the show class-map user EXEC command to display quality of service (QoS) class maps, which define the match criteria to classify traffic. show class-map [class-map-name] [ | {begin | exclude | include} expression]...
Page 290: Show Cluster
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster show cluster Use the show cluster user EXEC command to display the cluster status and a summary of the cluster to which the switch belongs. This command can be entered on the cluster command switch and cluster member switches.
Page 291 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster This is an example of output when the show cluster command is entered on a cluster member switch: Switch1> show cluster Member switch for cluster “hapuna” Member number: Management IP address: 192.192.192.192...
Page 292: Show Cluster Candidates
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster candidates show cluster candidates Use the show cluster candidates privileged EXEC command to display a list of candidate switches. show cluster candidates [detail | mac-address H.H.H.] [ | {begin | exclude | include} expression]...
Page 293 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster candidates This is an example of output from the show cluster candidates command that uses the MAC address of a cluster member switch directly connected to the cluster command switch: Switch>...
Page 294: Show Cluster Members
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster members show cluster members Use the show cluster members privileged EXEC command to display information about the cluster members. show cluster members [n | detail] [ | {begin | exclude | include} expression] Syntax Description (Optional) Number that identifies a cluster member.
Page 295 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show cluster members This is an example of output from the show cluster members for cluster member 3: Switch# show cluster members 3 Device 'SanJuan2' with member number 3 Device type: cisco WS-C2960 MAC address: 0002.4b29.4400...
Page 296: Show Controllers Cpu-Interface
12.2(25)FX This command was introduced. Usage Guidelines This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch. Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.
Page 297 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers cpu-interface Supervisor ASIC receive-queue parameters ---------------------------------------- queue 0 maxrecevsize 5EE pakhead 1419A20 paktail 13EAED4 queue 1 maxrecevsize 5EE pakhead 15828E0 paktail 157FBFC queue 2 maxrecevsize 5EE pakhead 1470D40 paktail 1470FE4 queue 3 maxrecevsize 5EE pakhead 19CDDD0 paktail 19D02C8 <output truncated>...
Page 298: Show Controllers Ethernet-Controller
This display without keywords provides traffic statistics, basically the RMON statistics for all interfaces or for the specified interface. When you enter the phy or port-asic keywords, the displayed information is useful primarily for Cisco technical support representatives troubleshooting the switch.
Page 299 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller Examples This is an example of output from the show controllers ethernet-controller command for an interface. Table 2-18 describes the Transmit fields, and Table 2-19 describes the Receive fields.
Page 300 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller Table 2-18 Transmit Field Descriptions (continued) Field Description 5 collision frames The number of frames that are successfully sent on an interface after five collisions occur. 6 collision frames The number of frames that are successfully sent on an interface after six collisions occur.
Page 301 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller Table 2-19 Receive Field Descriptions (continued) Field Description Unicast bytes The total amount of memory (in bytes) used by unicast frames received on an interface, including the FCS value and the incorrectly formed frames. This value excludes the frame header bits.
Page 302 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller Table 2-19 Receive Field Descriptions (continued) Field Description System FCS error frames The total number of frames received on an interface that have a valid length (in bytes) but that do not have the correct FCS values.
Page 303 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller StackPcsInfo : FFFF1000 860329BD 5555FFFF FFFFFFFF FF0FFF00 86020000 5555FFFF 00000000 StackRacInfo : 73001630 00000003 7F001644 00000003 24140003 FD632B00 18E418E0 FFFFFFFF StackControlStatus : 18E418E0 stackControlStatusMask : FFFFFFFF TransmitBufferFreeListInfo : 00000854 00000800 00000FF8 00000000...
Page 304 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers ethernet-controller 0 Sup Queue 7 Drop Frames 0 Sup Queue 15 Drop Frames =========================================================================== Switch 1, PortASIC 1 Statistics --------------------------------------------------------------------------- 0 RxQ-0, wt-0 enqueue frames 0 RxQ-0, wt-0 drop frames...
Page 305: Show Controllers Tcam
12.2(25)FX This command was introduced. Usage Guidelines This display provides information that might be useful for Cisco technical support representatives troubleshooting the switch. Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Page 306 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers tcam HRR3: 00000000_00000000 HRR4: 00000000_00000000 HRR5: 00000000_00000000 HRR6: 00000000_00000000 HRR7: 00000000_00000000 <output truncated> GMR31: FF_FFFFFFFF_FFFFFFFF GMR32: FF_FFFFFFFF_FFFFFFFF GMR33: FF_FFFFFFFF_FFFFFFFF ============================================================================= TCAM related PortASIC 1 registers ============================================================================= LookupType: 89A1C67D_24E35F00 LastCamIndex: 0000FFE0...
Page 307: Show Controllers Utilization
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers utilization show controllers utilization Use the show controllers utilization user EXEC command to display bandwidth utilization on the switch or specific ports. show controllers [interface-id] utilization [ | {begin | exclude | include} expression]...
Page 308 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show controllers utilization Table 2-20 show controllers utilization Field Descriptions Field Description Receive Bandwidth Percentage Displays the received bandwidth usage of the switch, which is the Utilization sum of the received traffic on all the ports divided by the switch receive capacity.
Page 309: Show Dot1X
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show dot1x show dot1x Use the show dot1x privileged EXEC command to display IEEE 802.1x statistics, administrative status, and operational status for the switch or for the specified port. show dot1x [all | interface interface-id | statistics interface interface-id] [ | {begin | exclude |...
Page 310 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show dot1x Port Control = Auto QuietPeriod = 60 Seconds Re-authentication = Disabled ReAuthPeriod = 3600 Seconds ServerTimeout = 30 Seconds SuppTimeout = 30 Seconds TxPeriod = 30 Seconds Guest-Vlan This is an example of output from the show dot1x interface interface-id privileged EXEC command: Switch# show dot1x interface gigabitethernet0/1 Supplicant MAC 00d0.b71b.35de...
Page 311 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show dot1x Table 2-21 show dot1x statistics Field Descriptions (continued) Field Description RxTotal Number of valid EAPOL frames of any type that have been received. RxVersion Number of received packets in the IEEE 802.1x Version 1 format.
Page 312: Show Dtp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show dtp show dtp Use the show dtp privileged EXEC command to display Dynamic Trunking Protocol (DTP) information for the switch or for a specified interface. show dtp [interface interface-id] [ | {begin | exclude | include} expression]...
Page 313 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show dtp Statistics ---------- 3160 packets received (3160 good) 0 packets dropped 0 nonegotiate, 0 bad version, 0 domain mismatches, 0 bad TLVs, 0 other 6320 packets output (6320 good) 3160 native...
Page 314: Show Env
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show env show env Use the show env user EXEC command to display fan, temperature, redundant power system (RPS) availability, and power information for the switch. show env {all | fan | power | rps| temperature} [ | {begin | exclude | include} expression] Syntax Description Display both fan and temperature environmental status.
Page 315: Show Errdisable Detect
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable detect show errdisable detect Use the show errdisable detect user EXEC command to display error-disabled detection status. show errdisable detect [ | {begin | exclude | include} expression] Syntax Description | begin (Optional) Display begins with the line that matches the expression.
Page 316 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable detect Related Commands Command Description errdisable detect cause Enables error-disabled detection for a specific cause or all causes. show errdisable flap-values Displays error condition recognition information. show errdisable recovery Displays error-disabled recovery timer information.
Page 317: Show Errdisable Flap-Values
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable flap-values show errdisable flap-values Use the show errdisable flap-values user EXEC command to display conditions that cause an error to be recognized for a cause. show errdisable flap-values [ | {begin | exclude | include} expression]...
Page 318 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable flap-values Related Commands Command Description errdisable detect cause Enables error-disabled detection for a specific cause or all causes. show errdisable detect Displays error-disabled detection status. show errdisable recovery Displays error-disabled recovery timer information.
Page 319: Show Errdisable Recovery
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable recovery show errdisable recovery Use the show errdisable recovery user EXEC command to display the error-disabled recovery timer information. show errdisable recovery [ | {begin | exclude | include} expression]...
Page 320 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show errdisable recovery Interfaces that will be enabled at the next timeout: Interface Errdisable reason Time left(sec) --------- ----------------- -------------- Gi0/2 link-flap Note Though visible in the output, the unicast-flood field is not valid.
Page 321: Show Etherchannel
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show etherchannel show etherchannel Use the show etherchannel user EXEC command to display EtherChannel information for a channel. show etherchannel [channel-group-number {detail | port | port-channel | protocol | summary}] {detail | load-balance | port | port-channel | protocol | summary} [ | {begin | exclude |...
Page 322 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show etherchannel Examples This is an example of output from the show etherchannel 1 detail command: Switch> show etherchannel 1 detail Group state = L2 Ports: 2 Maxports = 16 Port-channels: 1 Max Port-channels = 16...
Page 323 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show etherchannel Number of channel-groups in use: 1 Number of aggregators: Group Port-channel Protocol Ports ------+-------------+-----------+---------------------------------------- Po1(SU) LACP Gi0/1(P) Gi0/2(P) This is an example of output from the show etherchannel 1 port-channel command: Switch>...
Page 324: Show Flowcontrol
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show flowcontrol show flowcontrol Use the show flowcontrol user EXEC command to display the flow control status and statistics. show flowcontrol [interface interface-id | module number] [ | {begin | exclude | include}...
Page 325 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show flowcontrol This is an example of output from the show flowcontrol interface interface-id command: Switch> show flowcontrol gigabitethernet0/2 Port Send FlowControl Receive FlowControl RxPause TxPause admin oper admin oper --------- -------- -------- -------- --------...
Page 326: Show Interfaces
(Optional) Display the input and output packets by switching path for the interface. status (Optional) Display the status of the interface. A status of unsupported in the Type field means that a non-Cisco small form-factor pluggable (SFP) module is inserted in the module slot. err-disabled (Optional) Display interfaces in error-disabled state.
Page 327 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces | exclude (Optional) Display excludes lines that match the expression. | include (Optional) Display includes lines that match the specified expression. expression Expression in the output to use as a reference point.
Page 328 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces 2 packets input, 1040 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input...
Page 329 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces This is an example of output from the show interfaces interface description command when the interface has been described as Connects to Marketing by using the description interface configuration command.
Page 330 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces This is an example of output from the show interfaces status err-disabled command. It displays the status of interfaces in the error-disabled state. Switch# show interfaces status err-disabled Port Name...
Page 331 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces Table 2-22 show interfaces switchport Field Descriptions (continued) Field Description Access Mode VLAN Displays the VLAN ID to which the port is configured. Trunking Native Mode VLAN Lists the VLAN ID of the trunk that is in native mode. Lists the allowed VLANs on the trunk.
Page 332 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces Administrative Auto-MDIX: off Operational Auto-MDIX: off Configured Media: sfp Active Media: sfp Attached: 10/100/1000BaseTX SFP-10/100/1000BaseTX This is an example of output from the show interfaces interface-id transceiver detail command: Switch# show interfaces gigabitethernet0/3 transceiver detail ITU Channel not available (Wavelength not available), Transceiver is externally calibrated.
Page 333: Show Interfaces Counters
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces counters show interfaces counters Use the show interfaces counters privileged EXEC command to display various counters for the switch or for a specific interface. show interfaces [interface-id | vlan vlan-id] counters [errors | etherchannel | protocol status |...
Page 334 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show interfaces counters This is an example of partial output from the show interfaces counters protocol status command for all interfaces. Switch# show interfaces counters protocol status Protocols allocated: Vlan1: Other, IP...
Page 335: Show Inventory
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show inventory show inventory Use the show inventory user EXEC command to display product identification (PID) information for the hardware. show inventory [entity-name | raw] [ | {begin | exclude | include} expression]...
Page 336: Show Ip Dhcp Snooping
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip dhcp snooping show ip dhcp snooping Use the show ip dhcp snooping user EXEC command to display the DHCP snooping configuration. show ip dhcp snooping [ | {begin | exclude | include} expression]...
Page 337: Show Ip Dhcp Snooping Binding
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip dhcp snooping binding show ip dhcp snooping binding Use the show ip dhcp snooping binding user EXEC command to display the DHCP snooping binding database and configuration information for all interfaces on a switch.
Page 338 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip dhcp snooping binding This example shows how to display the DHCP snooping binding entries for a specific IP address: Switch> show ip dhcp snooping binding 10.1.2.150 MacAddress IpAddress Lease(sec) Type...
Page 339: Show Ip Dhcp Snooping Database
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip dhcp snooping database show ip dhcp snooping database Use the show ip dhcp snooping database user EXEC command to display the status of the DHCP snooping binding database agent. show ip dhcp snooping database [detail] [ | {begin | exclude | include} expression]...
Page 340 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip dhcp snooping database Last Succeded Time : None Last Failed Time : 17:14:25 UTC Sat Jul 7 2001 Last Failed Reason : Unable to access URL. Total Attempts Startup Failures :...
Page 341: Show Ip Igmp Profile
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp profile show ip igmp profile Use the show ip igmp profile privileged EXEC command to display all configured Internet Group Management Protocol (IGMP) profiles or a specified IGMP profile.
Page 342: Show Ip Igmp Snooping
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping show ip igmp snooping Use the show ip igmp snooping user EXEC command to display the Internet Group Management Protocol (IGMP) snooping configuration of the switch or the VLAN.
Page 343 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping IGMP snooping :Enabled Immediate leave :Disabled Multicast router learning mode :pim-dvmrp Source only learning age timer CGMP interoperability mode :IGMP_ONLY Last member query interval : 100 This is an example of output from the show ip igmp snooping command. It displays snooping characteristics for all VLANs on the switch.
Page 344 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping Command Description ip igmp snooping vlan static Statically adds a Layer 2 port as a member of a multicast group. show ip igmp snooping groups Displays the IGMP snooping multicast table for the switch.
Page 345: Show Ip Igmp Snooping Groups
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping groups show ip igmp snooping groups Use the show ip igmp snooping groups privileged EXEC command to display the Internet Group Management Protocol (IGMP) snooping multicast table for the switch or the multicast information. Use with the vlan keyword to display the multicast table for a specified multicast VLAN or specific multicast information.
Page 346 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping groups Examples This is an example of output from the show ip igmp snooping groups command without any keywords. It displays the multicast table for the switch. Switch# show ip igmp snooping groups...
Page 347: Show Ip Igmp Snooping Mrouter
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping mrouter show ip igmp snooping mrouter Use the show ip igmp snooping mrouter privileged EXEC command to display the Internet Group Management Protocol (IGMP) snooping dynamically learned and manually configured multicast router ports for the switch or for the specified multicast VLAN.
Page 348 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping mrouter Related Commands Command Description ip igmp snooping Enables IGMP snooping on the switch or on a VLAN. ip igmp snooping vlan mrouter Adds a multicast router port.
Page 349: Show Ip Igmp Snooping Querier
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping querier show ip igmp snooping querier Use the show ip igmp snooping querier detail user EXEC command to display the configuration and operation information for the IGMP querier configured on a switch.
Page 350 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show ip igmp snooping querier Examples This is an example of output from the show ip igmp snooping querier command: Switch> show ip igmp snooping querier Vlan IP Address IGMP Version Port --------------------------------------------------- 172.20.50.11...
Page 351: Show Lacp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show lacp show lacp Use the show lacp user EXEC command to display Link Aggregation Control Protocol (LACP) channel-group information. show lacp [channel-group-number] {counters | internal | neighbor | sys-id} [ | {begin | exclude |...
Page 352 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show lacp Examples This is an example of output from the show lacp counters user EXEC command. Table 2-24 describes the fields in the display. Switch> show lacp counters LACPDUs Marker Marker Response...
Page 353 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show lacp Table 2-25 describes the fields in the display: Table 2-25 show lacp internal Field Descriptions Field Description State State of the specific port. These are the allowed values: – —Port is in an unknown state.
Page 354 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show lacp This is an example of output from the show lacp neighbor command: Switch> show lacp neighbor Flags: S - Device is sending Slow LACPDUs F - Device is sending Fast LACPDUs...
Page 355: Show Mac Access-Group
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac access-group show mac access-group Use the show mac access-group user EXEC command to display the MAC access control lists (ACLs) configured for an interface or a switch. show mac access-group [interface interface-id] [ | {begin | exclude | include} expression]...
Page 356 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac access-group Related Commands Command Description mac access-group Applies a MAC access group to an interface. Catalyst 2960 Switch Command Reference 2-328 78-16882-01...
Page 357: Show Mac Address-Table
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table show mac address-table Use the show mac address-table user EXEC command to display a specific MAC address table static and dynamic entry or the MAC address table static and dynamic entries on a specific interface or VLAN.
Page 358 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table Related Commands Command Description clear mac address-table dynamic Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN.
Page 359: Show Mac Address-Table Address
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table address show mac address-table address Use the show mac address-table address user EXEC command to display MAC address table information for the specified MAC address. show mac address-table address mac-address [interface interface-id] [vlan vlan-id] [ | {begin |...
Page 360 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table address Related Commands Command Description show mac address-table aging-time Displays the aging time in all VLANs or the specified VLAN. show mac address-table count Displays the number of addresses present in all VLANs or the specified VLAN.
Page 361: Show Mac Address-Table Aging-Time
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table aging-time show mac address-table aging-time Use the show mac address-table aging-time user EXEC command to display the aging time of a specific address table instance, all address table instances on a specified VLAN or, if a specific VLAN is not specified, on all VLANs.
Page 362 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table aging-time Related Commands Command Description mac address-table aging-time Sets the length of time that a dynamic entry remains in the MAC address table after the entry is used or updated.
Page 363: Show Mac Address-Table Count
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table count show mac address-table count Use the show mac address-table count user EXEC command to display the number of addresses present in all VLANs or the specified VLAN. show mac address-table count [vlan vlan-id] [ | {begin | exclude | include} expression]...
Page 364 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table count Related Commands Command Description show mac address-table address Displays MAC address table information for the specified MAC address. show mac address-table aging-time Displays the aging time in all VLANs or the specified VLAN.
Page 365: Show Mac Address-Table Dynamic
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table dynamic show mac address-table dynamic Use the show mac address-table dynamic user EXEC command to display only dynamic MAC address table entries. show mac address-table dynamic [address mac-address] [interface interface-id] [vlan vlan-id]...
Page 366 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table dynamic Related Commands Command Description clear mac address-table dynamic Deletes from the MAC address table a specific dynamic address, all dynamic addresses on a particular interface, or all dynamic addresses on a particular VLAN.
Page 367: Show Mac Address-Table Interface
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table interface show mac address-table interface Use the show mac address-table interface user command to display the MAC address table information for the specified interface in the specified VLAN. show mac address-table interface interface-id [vlan vlan-id] [ | {begin | exclude | include}...
Page 368 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table interface Related Commands Command Description show mac address-table address Displays MAC address table information for the specified MAC address. show mac address-table aging-time Displays the aging time in all VLANs or the specified VLAN.
Page 369: Show Mac Address-Table Notification
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table notification show mac address-table notification Use the show mac address-table notification user EXEC command to display the MAC address notification settings for all interfaces or the specified interface. show mac address-table notification [interface [interface-id]] [ | {begin | exclude | include}...
Page 370 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table notification Examples This is an example of output from the show mac address-table notification command: Switch> show mac address-table notification MAC Notification Feature is Enabled on the switch Interval between Notification Traps : 60 secs...
Page 371: Show Mac Address-Table Static
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table static show mac address-table static Use the show mac address-table static user EXEC command to display only static MAC address table entries. show mac address-table static [address mac-address] [interface interface-id] [vlan vlan-id]...
Page 372 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table static Related Commands Command Description mac address-table static Adds static addresses to the MAC address table. mac address-table static drop Enables unicast MAC address filtering and configures the switch to drop traffic with a specific source or destination MAC address.
Page 373: Show Mac Address-Table Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table vlan show mac address-table vlan Use the show mac address-table vlan user EXEC command to display the MAC address table information for the specified VLAN. show mac address-table vlan vlan-id [ | {begin | exclude | include} expression]...
Page 374 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mac address-table vlan Related Commands Command Description show mac address-table address Displays MAC address table information for the specified MAC address. show mac address-table aging-time Displays the aging time in all VLANs or the specified VLAN.
Page 375: Show Mls Qos
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos show mls qos Use the show mls qos user EXEC command to display global quality of service (QoS) configuration information. show mls qos [ | {begin | exclude | include} expression]...
Page 376: Show Mls Qos Aggregate-Policer
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos aggregate-policer show mls qos aggregate-policer Use the show mls qos aggregate-policer user EXEC command to display the quality of service (QoS) aggregate policer configuration. A policer defines a maximum permissible rate of transmission, a maximum burst size for transmissions, and an action to take if either maximum is exceeded.
Page 377: Show Mls Qos Input-Queue
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos input-queue show mls qos input-queue Use the show mls qos input-queue user EXEC command to display quality of service (QoS) settings for the ingress queues. show mls qos input-queue [ | {begin | exclude | include} expression]...
Page 378 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos input-queue Related Commands Command Description mls qos srr-queue input bandwidth Assigns shaped round robin (SRR) weights to an ingress queue. mls qos srr-queue input buffers Allocates the buffers between the ingress queues.
Page 379: Show Mls Qos Interface
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos interface show mls qos interface Use the show mls qos interface user EXEC command to display quality of service (QoS) information at the port level. show mls qos interface [interface-id] [buffers | queueing | statistics]...
Page 380 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos interface Examples This is an example of output from the show mls qos interface interface-id command when VLAN-based QoS is enabled: Switch> show mls qos interface gigabitethernet0/1 GigabitEthernet0/1 trust state:not trusted...
Page 381 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos interface 45 - 49 : 50 - 54 : 55 - 59 : 60 - 64 : dscp: outgoing ------------------------------- 363949 10 - 14 : 15 - 19 :...
Page 382 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos interface Command Description mls qos srr-queue input dscp-map Maps DSCP values to an ingress queue or maps DSCP values to a queue and to a threshold ID. mls qos srr-queue input priority-queue Configures the ingress priority queue and guarantees bandwidth.
Page 383: Show Mls Qos Maps
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos maps show mls qos maps Use the show mls qos maps user EXEC command to display quality of service (QoS) mapping information. During classification, QoS uses the mapping tables to represent the priority of the traffic and to derive a corresponding class of service (CoS) or Differentiated Services Code Point (DSCP) value from the received CoS, DSCP, or IP precedence value.
Page 384 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos maps The DSCP input queue threshold and the DSCP output queue threshold maps appear as a matrix. The d1 column specifies the most-significant digit of the DSCP number. The d2 row specifies the least-significant digit in the DSCP number.
Page 385 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos maps Dscp-inputq-threshold map: d1 :d2 -------------------------------------------------------------------- 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01...
Page 386: Show Mls Qos Queue-Set
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos queue-set show mls qos queue-set Use the show mls qos queue-set user EXEC command to display quality of service (QoS) settings for the egress queues. show mls qos queue-set [qset-id] [ | {begin | exclude | include} expression]...
Page 387 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos queue-set Related Commands Command Description mls qos queue-set output buffers Allocates buffers to the queue-set. mls qos queue-set output threshold Configures the weighted tail-drop (WTD) thresholds, guarantees the availability of buffers, and configures the maximum memory allocation of the queue-set.
Page 388: Show Mls Qos Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mls qos vlan show mls qos vlan Use the show mls qos vlan user EXEC command to display the policy maps attached to a switch virtual interface (SVI). show mls qos vlan vlan-id [ | {begin | exclude | include} expression]...
Page 389: Show Monitor
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show monitor show monitor Use the show monitor user EXEC command to display information about all Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) sessions on the switch. Use the command with keywords to show a specific session, all sessions, all local sessions, or all remote sessions.
Page 390 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show monitor Examples This is an example of output for the show monitor user EXEC command: Switch# show monitor Session 1 --------- Type : Local Session Source Ports : RX Only : Gi0/1...
Page 391 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show monitor Related Commands Command Description monitor session Starts or modifies a SPAN or RSPAN session. Catalyst 2960 Switch Command Reference 2-363 78-16882-01...
Page 392: Show Mvr
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr show mvr Use the show mvr privileged EXEC command without keywords to display the current Multicast VLAN Registration (MVR) global parameter values, including whether or not MVR is enabled, the MVR multicast VLAN, the maximum query response time, the number of multicast groups, and the MVR mode (dynamic or compatible).
Page 393 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr Related Commands Command Description mvr (global configuration) Enables and configures multicast VLAN registration on the switch. mvr (interface configuration) Configures MVR ports. show mvr interface Displays the configured MVR interfaces, status of the specified interface, or all multicast groups to which the interface belongs when the interface and members keywords are appended to the command.
Page 394: Show Mvr Interface
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr interface show mvr interface Use the show mvr interface privileged EXEC command without keywords to display the Multicast VLAN Registration (MVR) receiver and source ports. Use the command with keywords to display MVR parameters for a specific receiver port.
Page 395 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr interface In the preceding display, Status is defined as follows: Active means the port is part of a VLAN. • • Up/Down means that the port is forwarding/nonforwarding. • Inactive means that the port is not yet part of any VLAN.
Page 396: Show Mvr Members
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr members show mvr members Use the show mvr members privileged EXEC command to display all receiver and source ports that are currently members of an IP multicast group. show mvr members [ip-address] [ | {begin | exclude | include} expression]...
Page 397 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show mvr members This is an example of output from the show mvr members ip-address command. It displays the members of the IP multicast group with that address: Switch# show mvr members 239.255.0.2 239.255.003.--22...
Page 398: Show Pagp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show pagp show pagp Use the show pagp user EXEC command to display Port Aggregation Protocol (PAgP) channel-group information. show pagp [channel-group-number] {counters | internal | neighbor} [ | {begin | exclude |...
Page 399 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show pagp This is an example of output from the show pagp 1 internal command: Switch> show pagp 1 internal Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
Page 400: Show Parser Macro
Output appear. Examples This is a partial output example from the show parser macro command. The output for the Cisco-default macros varies depending on the switch platform and the software image running on the switch:...
Page 401 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show parser macro -------------------------------------------------------------- Macro name : cisco-desktop Macro type : default interface # macro keywords $AVID # Basic interface - Enable data VLAN only # Recommended value for access vlan (AVID) should not be 1...
Page 402 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show parser macro This is an example of output from the show parser macro name command: Switch# show parser macro name standard-switch10 Macro name : standard-switch10 Macro type : customizable macro description standard-switch10...
Page 403: Show Policy-Map
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show policy-map show policy-map Use the show policy-map user EXEC command to display quality of service (QoS) policy maps, which define classification criteria for incoming traffic. Policy maps can include policers that specify the bandwidth limitations and the action to take if the limits are exceeded.
Page 404 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show policy-map Related Commands Command Description policy-map Creates or modifies a policy map that can be attached to multiple ports to specify a service policy. Catalyst 2960 Switch Command Reference 2-376 78-16882-01...
Page 405: Show Port-Security
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show port-security show port-security Use the show port-security privileged EXEC command to display port-security settings for an interface or for the switch. show port-security [interface interface-id] [address | vlan] [ | {begin | exclude | include}...
Page 406 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show port-security Examples This is an example of the output from the show port-security command: Switch# show port-security Secure Port MaxSecureAddr CurrentAddr SecurityViolation Security Action (Count) (Count) (Count) ------------------------------------------------------------------------------- Gi0/1 Shutdown -------------------------------------------------------------------------------...
Page 407 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show port-security Related Commands Command Description clear port-security Deletes from the MAC address table a specific type of secure address or all the secure addresses on the switch or an interface. switchport port-security...
Page 408: Show Sdm Prefer
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show sdm prefer show sdm prefer Use the show sdm prefer privileged EXEC command to display information about the Switch Database Management (SDM) templates that can be used to maximize used for allocating system resources for a particular feature.
Page 409 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show sdm prefer This is an example of output from the show sdm prefer qos command: Switch# show sdm prefer qos "qos" template: The selected template optimizes the resources in the switch to support this level of features for 0 routed interfaces and 255 VLANs.
Page 410: Show Setup Express
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show setup express show setup express Use the show setup express privileged EXEC command to display if Express Setup mode is active on the switch. show setup express [ | {begin | exclude | include} expression]...
Page 411: Show Spanning-Tree
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree show spanning-tree Use the show spanning-tree user EXEC command to display spanning-tree state information. show spanning-tree [bridge-group | active [detail] | backbonefast | blockedports | bridge | detail [active] | inconsistentports | interface interface-id | mst | pathcost method | root | summary...
Page 412 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree mst [configuration] (Optional) Display the multiple spanning-tree (MST) region [instance-id [detail | configuration and status (available only in privileged EXEC mode). interface interface-id The keywords have these meanings: [detail]] instance-id—You can specify a single instance ID, a range of IDs •...
Page 413 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree Examples This is an example of output from the show spanning-tree active command: Switch# show spanning-tree active VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32768 Address 0001.42e2.cdd0 Cost...
Page 414 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree UplinkFast is enabled BackboneFast is enabled Pathcost method used is short Name Blocking Listening Learning Forwarding STP Active ---------------------- -------- --------- -------- ---------- ---------- VLAN0001 VLAN0002 VLAN0004 VLAN0006 VLAN0031 VLAN0032 <output truncated>...
Page 415 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree IST master *this switch Operational hello time 2, forward delay 15, max age 20, max hops 20 Configured hello time 2, forward delay 15, max age 20, max hops 20...
Page 416 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show spanning-tree Command Description spanning-tree portfast (interface Enables the Port Fast feature on an interface and all its configuration) associated VLANs. spanning-tree uplinkfast Accelerates the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself.
Page 417: Show Storm-Control
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show storm-control show storm-control Use the show storm-control user EXEC command to display broadcast, multicast, or unicast storm control settings on the switch or on the specified interface or to display storm-control history.
Page 418 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show storm-control This is an example of output from the show storm-control command for a specified interface. Because no traffic-type keyword was entered, the broadcast storm control settings appear. Switch> show storm-control gigabitethernet 0/1...
Page 419: Show System Mtu
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show system mtu show system mtu Use the show system mtu privileged EXEC command to display the global maximum transmission unit (MTU) or maximum packet size set for the switch. show system mtu [ | {begin | exclude | include} expression]...
Page 420: Show Udld
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show udld show udld Use the show udld user EXEC command to display UniDirectional Link Detection (UDLD) administrative and operational status for all ports or the specified port. show udld [interface-id] [ | {begin | exclude | include} expression]...
Page 421 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show udld Table 2-28 show udld Field Descriptions Field Description Interface The interface on the local device configured for UDLD. Port enable administrative How UDLD is configured on the port. If UDLD is enabled or...
Page 422 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show udld Related Commands Command Description udld Enables aggressive or normal mode in UDLD or sets the configurable message timer time. udld port Enables UDLD on an individual interface or prevents a fiber-optic interface from being enabled by the udld global configuration command.
Page 423: Show Version
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show version show version Use the show version user EXEC command to display version information for the hardware and firmware. show version [ | {begin | exclude | include} expression] Syntax Description | begin (Optional) Display begins with the line that matches the expression.
Page 424 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show version 64K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address : 00:0B:FC:FF:E8:80 Motherboard assembly number : 73-9832-02 Motherboard serial number : FHH0916001J Motherboard revision number : 01 System serial number...
Page 425: Show Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vlan show vlan Use the show vlan user EXEC command to display the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) on the switch.
Page 426 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vlan Examples This is an example of output from the show vlan command. Table 2-29 describes the fields in the display. Switch> show vlan VLAN Name Status Ports ---- -------------------------------- --------- -------------------------------...
Page 427 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vlan Table 2-29 show vlan Command Output Fields (continued) Field Description BrdgNo Bridge number for the VLAN, if applicable. Spanning Tree Protocol type used on the VLAN. BrdgMode Bridging mode for this VLAN—possible values are source-route bridging (SRB) and source-route transparent (SRT);...
Page 428: Show Vmps
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vmps show vmps Use the show vmps user EXEC command without keywords to display the VLAN Query Protocol (VQP) version, reconfirmation interval, retry count, VLAN Membership Policy Server (VMPS) IP addresses, and the current and primary servers, or use the statistics keyword to display client-side statistics.
Page 429 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vmps This is an example of output from the show vmps statistics command. Table 2-30 describes each field in the display. Switch> show vmps statistics VMPS Client Statistics ---------------------- Queries: Responses:...
Page 430 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vmps Related Commands Command Description clear vmps statistics Clears the statistics maintained by the VQP client. vmps reconfirm Sends VQP queries to reconfirm all dynamic VLAN assignments with the (privileged EXEC) VMPS.
Page 431: Show Vtp
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vtp show vtp Use the show vtp user EXEC command to display general information about the VLAN Trunking Protocol (VTP) management domain, status, and counters. show vtp {counters | password | status} [ | {begin | exclude | include} expression]...
Page 432 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vtp VTP pruning statistics: Trunk Join Transmitted Join Received Summary advts received from non-pruning-capable device ---------------- ---------------- ---------------- --------------------------- Fa0/47 Fa0/48 Gi0/1 Gi0/2 Table 2-31 show vtp counters Field Descriptions Field...
Page 433 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vtp Table 2-31 show vtp counters Field Descriptions (continued) Field Description Number of configuration Number of MD5 digest errors. digest errors Digest errors increment whenever the MD5 digest in the summary packet and the MD5 digest of the received advertisement calculated by the switch do not match.
Page 434 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands show vtp Table 2-32 show vtp status Field Descriptions (continued) Field Description VTP Operating Mode Displays the VTP operating mode, which can be server, client, or transparent. Server: a switch in VTP server mode is enabled for VTP and sends advertisements.
Page 435: Shutdown
2 V ] Chapter 2 Catalyst 2960 Switch Cisco IOS Commands shutdown shutdown Use the shutdown interface configuration command to disable an interface. Use the no form of this command to restart a disabled interface. shutdown no shutdown Syntax Description This command has no arguments or keywords.
Page 436: Shutdown Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands shutdown vlan shutdown vlan Use the shutdown vlan global configuration command to shut down (suspend) local traffic on the specified VLAN. Use the no form of this command to restart local traffic on the VLAN.
Page 437: Snmp-Server Enable Traps
| status | supply | temperature] | flash | hsrp | ipmulticast | mac-notification | msdp | ospf [cisco-specific | errors | lsa | rate-limit | retransmit | state-change] | pim [invalid-pim-message | neighbor-change | rp-mapping-change] | port-security [trap-rate...
Page 438 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp-server enable traps ospf [cisco-specific | (Optional) Enable Open Shortest Path First (OSPF) traps. The keywords have errors | lsa | rate-limit | these meanings: retransmit | cisco-specific—(Optional) Enable Cisco-specific traps. •...
Page 439 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp-server enable traps Defaults The sending of SNMP traps is disabled. Command Modes Global configuration Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines Specify the host (NMS) that receives the traps by using the snmp-server host global configuration command.
Page 440: Snmp-Server Host
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp-server host snmp-server host Use the snmp-server host global configuration command to specify the recipient (host) of a Simple Network Management Protocol (SNMP) notification operation. Use the no form of this command to remove the specified host.
Page 441 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp-server host community-string Password-like community string sent with the notification operation. Though you can set this string by using the snmp-server host command, we recommend that you define this string by using the snmp-server community global configuration command before using the snmp-server host command.
Page 442 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp-server host Defaults This command is disabled by default. No notifications are sent. If you enter this command with no keywords, the default is to send all trap types to the host. No informs are sent to this host.
Page 443 The community string is defined as comaccess: Switch(config)# snmp-server enable traps Switch(config)# snmp-server host myhost.cisco.com comaccess snmp This example shows how to enable the switch to send all traps to the host myhost.cisco.com by using the community string public: Switch(config)# snmp-server enable traps Switch(config)# snmp-server host myhost.cisco.com public...
Page 444: Snmp Trap Mac-Notification
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp trap mac-notification snmp trap mac-notification Use the snmp trap mac-notification interface configuration command to enable the Simple Network Management Protocol (SNMP) MAC address notification trap on a specific Layer 2 interface. Use the no form of this command to return to the default setting.
Page 445 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands snmp trap mac-notification Related Commands Command Description clear mac address-table notification Clears the MAC address notification global counters. mac address-table notification Enables the MAC address notification feature. show mac address-table notification Displays the MAC address notification settings for all interfaces or on the specified interface when the interface keyword is appended.
Page 446: Spanning-Tree Backbonefast
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree backbonefast spanning-tree backbonefast Use the spanning-tree backbonefast global configuration command to enable the BackboneFast feature. Use the no form of the command to return to the default setting. spanning-tree backbonefast no spanning-tree backbonefast Syntax Description This command has no arguments or keywords.
Page 447: Spanning-Tree Bpdufilter
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree bpdufilter spanning-tree bpdufilter Use the spanning-tree bpdufilter interface configuration command to prevent an interface from sending or receiving bridge protocol data units (BPDUs). Use the no form of this command to return to the default setting.
Page 448 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree bpdufilter Related Commands Command Description show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 449: Spanning-Tree Bpduguard
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree bpduguard spanning-tree bpduguard Use the spanning-tree bpduguard interface configuration command to put an interface in the error-disabled state when it receives a bridge protocol data unit (BPDU). Use the no form of this command to return to the default setting.
Page 450 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree bpduguard Related Commands Command Description show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 451: Spanning-Tree Cost
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree cost spanning-tree cost Use the spanning-tree cost interface configuration command to set the path cost for spanning-tree calculations. If a loop occurs, spanning tree considers the path cost when selecting an interface to place in the forwarding state.
Page 452 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree cost Related Commands Command Description show spanning-tree interface Displays spanning-tree information for the specified interface. interface-id spanning-tree port-priority Configures an interface priority. spanning-tree vlan priority Sets the switch priority for the specified spanning-tree instance.
Page 453: Spanning-Tree Etherchannel Guard Misconfig
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree etherchannel guard misconfig spanning-tree etherchannel guard misconfig Use the spanning-tree etherchannel guard misconfig global configuration command to display an error message when the switch detects an EtherChannel misconfiguration. Use the no form of this command to disable the feature.
Page 454 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree etherchannel guard misconfig Related Commands Command Description errdisable recovery cause Enables the timer to recover from the EtherChannel channel-misconfig misconfiguration error-disabled state. show etherchannel summary Displays EtherChannel information for a channel as a one-line summary per channel-group.
Page 455: Spanning-Tree Extend System-Id
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree extend system-id spanning-tree extend system-id Use the spanning-tree extend system-id global configuration command to enable the extended system ID feature. spanning-tree extend system-id Though visible in the command-line help strings, the no version of this command is not supported. You Note cannot disable the extended system ID feature.
Page 456: Spanning-Tree Guard
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree guard spanning-tree guard Use the spanning-tree guard interface configuration command to enable root guard or loop guard on all the VLANs associated with the selected interface. Root guard restricts which interface is allowed to be the spanning-tree root port or the path-to-the root for the switch.
Page 457 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree guard ports. When the switch is operating in MST mode, BPDUs are not sent on nonboundary interfaces if the interface is blocked by loop guard in all MST instances. On a boundary interface, loop guard blocks the interface in all MST instances.
Page 458: Spanning-Tree Link-Type
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree link-type spanning-tree link-type Use the spanning-tree link-type interface configuration command to override the default link-type setting, which is determined by the duplex mode of the interface, and to enable rapid spanning-tree transitions to the forwarding state.
Page 459 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree link-type Related Commands Command Description clear spanning-tree detected-protocols Restarts the protocol migration process (force the renegotiation with neighboring switches) on all interfaces or on the specified interface. show spanning-tree interface Displays spanning-tree state information for the specified interface-id interface.
Page 460: Spanning-Tree Loopguard Default
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree loopguard default spanning-tree loopguard default Use the spanning-tree loopguard default global configuration command to prevent alternate or root ports from becoming designated ports because of a failure that leads to a unidirectional link. Use the no form of this command to return to the default setting.
Page 461 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree loopguard default Related Commands Command Description show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 462: Spanning-Tree Mode
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mode spanning-tree mode Use the spanning-tree mode global configuration command to enable per-VLAN spanning-tree plus (PVST+), rapid PVST+, or multiple spanning tree (MST) on your switch. Use the no form of this command to return to the default setting.
Page 463 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mode Related Commands Command Description show running-config Displays the current operating configuration. For syntax information, select Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 > File Management Commands > Configuration File Management Commands.
Page 464: Spanning-Tree Mst Configuration
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst configuration spanning-tree mst configuration Use the spanning-tree mst configuration global configuration command to enter multiple spanning-tree (MST) configuration mode through which you configure the MST region. Use the no form of this command to return to the default settings.
Page 465 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst configuration When you map VLANs to an MST instance, the mapping is incremental, and VLANs specified in the command are added to or removed from the VLANs that were previously mapped. To specify a range, use a hyphen;...
Page 466: Spanning-Tree Mst Cost
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst cost spanning-tree mst cost Use the spanning-tree mst cost interface configuration command to set the path cost for multiple spanning-tree (MST) calculations. If a loop occurs, spanning tree considers the path cost when selecting an interface to put in the forwarding state.
Page 467 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst cost Related Commands Command Description show spanning-tree Displays MST information for the specified interface. interface interface-id spanning-tree mst Configures an interface priority. port-priority spanning-tree mst priority Configures the switch priority for the specified spanning-tree instance.
Page 468: Spanning-Tree Mst Forward-Time
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst forward-time spanning-tree mst forward-time Use the spanning-tree mst forward-time global configuration command to set the forward-delay time for all multiple spanning-tree (MST) instances. The forwarding time specifies how long each of the listening and learning states last before the interface begins forwarding.
Page 469: Spanning-Tree Mst Hello-Time
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst hello-time spanning-tree mst hello-time Use the spanning-tree mst hello-time global configuration command to set the interval between hello bridge protocol data units (BPDUs) sent by root switch configuration messages. Use the no form of this command to return to the default setting.
Page 470: Spanning-Tree Mst Max-Age
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst max-age spanning-tree mst max-age Use the spanning-tree mst max-age global configuration command to set the interval between messages that the spanning tree receives from the root switch. If a switch does not receive a bridge protocol data unit (BPDU) message from the root switch within this interval, it recomputes the spanning-tree topology.
Page 471: Spanning-Tree Mst Max-Hops
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst max-hops spanning-tree mst max-hops Use the spanning-tree mst max-hops global configuration command to set the number of hops in a region before the bridge protocol data unit (BPDU) is discarded and the information held for an interface is aged.
Page 472: Spanning-Tree Mst Port-Priority
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst port-priority spanning-tree mst port-priority Use the spanning-tree mst port-priority interface configuration command to configure an interface priority. If a loop occurs, the Multiple Spanning Tree Protocol (MSTP) can find the interface to put in the forwarding state.
Page 473 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst port-priority Related Commands Command Description show spanning-tree mst interface Displays MST information for the specified interface. interface-id spanning-tree mst cost Sets the path cost for MST calculations. spanning-tree mst priority Sets the switch priority for the specified spanning-tree instance.
Page 474: Spanning-Tree Mst Priority
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst priority spanning-tree mst priority Use the spanning-tree mst priority global configuration command to set the switch priority for the specified spanning-tree instance. Use the no form of this command to return to the default setting.
Page 475: Spanning-Tree Mst Root
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst root spanning-tree mst root Use the spanning-tree mst root global configuration command to configure the multiple spanning-tree (MST) root switch priority and timers based on the network diameter. Use the no form of this command to return to the default settings.
Page 476 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree mst root When you enter the spanning-tree mst instance-id root secondary command, because of support for the extended system ID, the software changes the switch priority from the default value (32768) to 28672.
Page 477: Spanning-Tree Port-Priority
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree port-priority spanning-tree port-priority Use the spanning-tree port-priority interface configuration command to configure an interface priority. If a loop occurs, spanning tree can find the interface to put in the forwarding state. Use the no form of this command to return to the default setting.
Page 478 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree port-priority Examples This example shows how to increase the likelihood that a port will be put in the forwarding state if a loop occurs: Switch(config)# interface gigabitethernet0/2 Switch(config-if)# spanning-tree vlan 20 port-priority 0...
Page 479: Spanning-Tree Portfast (Global Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree portfast (global configuration) spanning-tree portfast (global configuration) Use the spanning-tree portfast global configuration command to globally enable bridge protocol data unit (BPDU) filtering on Port Fast-enabled interfaces, the BPDU guard feature on Port Fast-enabled interfaces, or the Port Fast feature on all nontrunking interfaces.
Page 480 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree portfast (global configuration) Enabling BPDU filtering on an interface is the same as disabling spanning tree on it and can result in Caution spanning-tree loops. Use the spanning-tree portfast bpduguard default global configuration command to globally enable BPDU guard on interfaces that are in a Port Fast-operational state.
Page 481: Spanning-Tree Portfast (Interface Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree portfast (interface configuration) spanning-tree portfast (interface configuration) Use the spanning-tree portfast interface configuration command to enable the Port Fast feature on an interface in all its associated VLANs. When the Port Fast feature is enabled, the interface changes directly from a blocking state to a forwarding state without making the intermediate spanning-tree state changes.
Page 482 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree portfast (interface configuration) Examples This example shows how to enable the Port Fast feature on a port: Switch(config)# interface gigabitethernet0/2 Switch(config-if)# spanning-tree portfast You can verify your settings by entering the show running-config privileged EXEC command.
Page 483: Spanning-Tree Uplinkfast
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree uplinkfast spanning-tree uplinkfast Use the spanning-tree uplinkfast global configuration command to accelerate the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. Use the no form of this command to return to the default setting.
Page 484 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree uplinkfast Do not enable the root guard on interfaces that will be used by the UplinkFast feature. With UplinkFast, the backup interfaces (in the blocked state) replace the root port in the case of a failure. However, if root guard is also enabled, all the backup interfaces used by the UplinkFast feature are placed in the root-inconsistent state (blocked) and prevented from reaching the forwarding state.
Page 485: Spanning-Tree Vlan
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree vlan spanning-tree vlan Use the spanning-tree vlan global configuration command to configure spanning tree on a per-VLAN basis. Use the no form of this command to return to the default setting.
Page 486 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree vlan Command Modes Global configuration Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines Disabling the STP causes the VLAN to stop participating in the spanning-tree topology. Interfaces that are administratively down remain down.
Page 487 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands spanning-tree vlan This example shows how to set spanning-tree max-age to 30 seconds for VLAN 20: Switch(config)# spanning-tree vlan 20 max-age 30 This example shows how to reset the max-age parameter to the default value for spanning-tree...
Page 488: Speed
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands speed speed Use the speed interface configuration command to specify the speed of a 10/100 Mbps or 10/100/1000 Mbps port. Use the no or default form of this command to return the port to its default value.
Page 489 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands speed Examples This example shows how to set speed on a port to 100 Mbps: Switch(config)# interface gigabitethernet0/1 Switch(config-if)# speed 100 This example shows how to set a port to autonegotiate at only 10 Mbps:...
Page 490: Srr-Queue Bandwidth Limit
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth limit srr-queue bandwidth limit Use the srr-queue bandwidth limit interface configuration command to limit the maximum output on a port. Use the no form of this command to return to the default setting.
Page 491 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth limit Related Commands Command Description mls qos queue-set output buffers Allocates buffers to the queue-set. mls qos srr-queue output cos-map Maps class of service (CoS) values to egress queue or maps CoS values to a queue and to a threshold ID.
Page 492: Srr-Queue Bandwidth Shape
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth shape srr-queue bandwidth shape Use the srr-queue bandwidth shape interface configuration command to assign the shaped weights and to enable bandwidth shaping on the four egress queues mapped to a port. Use the no form of this command to return to the default setting.
Page 493 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth shape Examples This example shows how to configure the queues for the same port for both shaping and sharing. Because the weight ratios for queues 2, 3, and 4 are set to 0, these queues operate in shared mode. The bandwidth weight for queue 1 is 1/8, which is 12.5 percent.
Page 494: Srr-Queue Bandwidth Share
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth share srr-queue bandwidth share Use the srr-queue bandwidth share interface configuration command switch to assign the shared weights and to enable bandwidth sharing on the four egress queues mapped to a port. The ratio of the weights is the ratio of frequency in which the shaped round robin (SRR) scheduler dequeues packets from each queue.
Page 495 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands srr-queue bandwidth share Examples This example shows how to configure the weight ratio of the SRR scheduler running on an egress port. Four queues are used. The bandwidth ratio allocated for each queue in shared mode is 1/(1+2+3+4), 2/(1+2+3+4), 3/(1+2+3+4), and 4/(1+2+3+4), which is 10 percent, 20 percent, 30 percent, and 40 percent for queues 1, 2, 3, and 4.
Page 496: Storm-Control
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands storm-control storm-control Use the storm-control interface configuration command to enable broadcast, multicast, or unicast storm control and to set threshold levels on an interface. Use the no form of this command to return to the default setting.
Page 497 Note When the storm control threshold for multicast traffic is reached, all multicast traffic except control traffic, such as bridge protocol data unit (BDPU) and Cisco Discovery Protocol (CDP) frames, are blocked. The trap and shutdown options are independent of each other.
Page 498 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands storm-control If you configure the action to be taken as shutdown (the port is error-disabled during a storm) when a packet storm is detected, you must use the no shutdown interface configuration command to bring the interface out of this state.
Page 499: Switchport Access
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport access switchport access Use the switchport access interface configuration command to configure a port as a static-access or dynamic-access port. If the switchport mode is set to access, the port operates as a member of the specified VLAN.
Page 500 The software implements the VLAN Query Protocol (VQP) client, which can query a VMPS such • as a Catalyst 6000 series switch. The Catalyst 2960 switches are not VMPS servers. The VMPS server must be configured before a port is configured as dynamic.
Page 501: Switchport Backup Interface
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport backup interface switchport backup interface Use the switchport backup interface interface configuration command on a Layer 2 interface to configure Flex Links, a pair of interfaces that provide backup to each other. Use the no form of this command to remove the Flex Links configuration.
Page 502 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport backup interface Neither of the links can be a port that belongs to an EtherChannel. However, you can configure two • port channels (EtherChannel logical interfaces) as Flex Links, and you can configure a port channel and a physical interface as Flex Links, with either the port channel or the physical interface as the primary link.
Page 503: Switchport Block
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport block switchport block Use the switchport block interface configuration command to prevent unknown multicast or unicast packets from being forwarded. Use the no form of this command to allow forwarding unknown multicast or unicast packets.
Page 504: Switchport Host
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport host switchport host Use the switchport host interface configuration command to optimize a port for a host connection. The no form of this command has no affect on the system. switchport host Syntax Description This command has no arguments or keywords.
Page 505: Switchport Mode
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport mode switchport mode Use the switchport mode interface configuration command to configure the VLAN membership mode of a port. Use the no form of this command to reset the mode to the appropriate default for the device.
Page 506 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport mode To autonegotiate trunking, the interfaces must be in the same VLAN Trunking Protocol (VTP) domain. Trunk negotiation is managed by the Dynamic Trunking Protocol (DTP), which is a point-to-point protocol. However, some internetworking devices might forward DTP frames improperly, which could cause misconfigurations.
Page 507: Switchport Nonegotiate
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport nonegotiate switchport nonegotiate Use the switchport nonegotiate interface configuration command to specify that Dynamic Trunking Protocol (DTP) negotiation packets are not sent on the Layer 2 interface. The switch does not engage in DTP negotiation on this interface.
Page 508 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport nonegotiate Examples This example shows how to cause a port to refrain from negotiating trunking mode and to act as a trunk or access port (depending on the mode set): Switch(config)# interface gigabitethernet0/1...
Page 509: Switchport Port-Security
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security switchport port-security Use the switchport port-security interface configuration command without keywords to enable port security on the interface. Use the keywords to configure secure MAC addresses, sticky MAC address learning, a maximum number of secure MAC addresses, or the violation mode. Use the no form of this command to disable port security or to set the parameters to their default states.
Page 510 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security vlan [vlan-list] (Optional) For trunk ports, you can set the maximum number of secure MAC addresses on a VLAN. If the vlan keyword is not entered, the default value is used.
Page 511 VLAN. When the port is connected to a Cisco IP Phone, the Cisco IP Phone requires up to two MAC addresses. The Cisco IP Phone address is learned on the voice VLAN and might also be learned on the access VLAN.
Page 512 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security Sticky secure MAC addresses have these characteristics: When you enable sticky learning on an interface by using the switchport port-security • mac-address sticky interface configuration command, the interface converts all the dynamic secure...
Page 513 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security Related Commands Command Description clear port-security Deletes from the MAC address table a specific type of secure address or all the secure addresses on the switch or an interface. show port-security address Displays all the secure addresses configured on the switch.
Page 514: Switchport Port-Security Aging
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security aging switchport port-security aging Use the switchport port-security aging interface configuration command to set the aging time and type for secure address entries or to change the aging behavior for secure addresses on a particular port. Use the no form of this command to disable port security aging or to set the parameters to their default states.
Page 515 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport port-security aging Examples This example sets the aging time as 2 hours for absolute aging for all the secure addresses on the port: Switch(config)# interface gigabitethernet0/1 Switch(config-if)# switchport port-security aging time 120...
Page 516: Switchport Priority Extend
IP phone how to send data packets from the device attached to the access port on the Cisco IP Phone. You must enable CDP on the switch port connected to the Cisco IP Phone to send the configuration to the Cisco IP Phone.
Page 517 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport priority extend Related Commands Command Description show interfaces Displays the administrative and operational status of a switching port. switchport voice vlan Configures the voice VLAN on the port. Catalyst 2960 Switch Command Reference...
Page 518: Switchport Protected
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport protected switchport protected Use the switchport protected interface configuration command to isolate unicast, multicast, and broadcast traffic at Layer 2 from other protected ports on the same switch. Use the no form of this command to disable protection on the port.
Page 519 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport protected Related Commands Command Description show interfaces Displays the administrative and operational status of a switching port, including switchport port blocking and port protection settings. switchport block Prevents unknown multicast or unicast traffic on the interface.
Page 520: Switchport Trunk
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport trunk switchport trunk Use the switchport trunk interface configuration command to set the trunk characteristics when the interface is in trunking mode. Use the no form of this command to reset a trunking characteristic to the default.
Page 521 VLAN trunk port by removing VLAN 1 from the allowed list. When you remove VLAN 1 from a trunk port, the interface continues to send and receive management traffic, for example, Cisco Discovery Protocol (CDP), Port Aggregation Protocol (PAgP), Link Aggregation Control Protocol (LACP), Dynamic Trunking Protocol (DTP), and VLAN Trunking Protocol (VTP) in VLAN 1.
Page 522 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands switchport trunk You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command. Related Commands Command Description show interfaces switchport Displays the administrative and operational status of a switching port, including port blocking and port protection settings.
Page 523: Switchport Voice Vlan
You should configure voice VLAN on Layer 2 access ports. You must enable Cisco Discovery Protocol (CDP) on the switchport connected to the Cisco IP phone for the switch to send configuration information to the phone. CDP is enabled by default globally and on the interface.
Page 524 When you enable port security on an interface that is also configured with a voice VLAN, you must set the maximum allowed secure addresses on the port to at least two. When the port is connected to a Cisco IP phone, the IP phone requires two MAC addresses: one for the access VLAN and the other for the voice VLAN.
Page 525: System Mtu
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands system mtu system mtu Use the system mtu global configuration command to set the maximum packet size or maximum transmission unit (MTU) size for Gigabit Ethernet ports or for Fast Ethernet (10/100) ports. Use the no form of this command to restore the global MTU value to its default value.
Page 526 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands system mtu Examples This example shows how to set the maximum packet size for Gigabit Ethernet ports to 1800 bytes: Switch(config)# system mtu jumbo 1800 Switch(config)# exit Switch# reload You can verify your setting by entering the show system mtu privileged EXEC command.
Page 527: Test Cable-Diagnostics Tdr
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands test cable-diagnostics tdr test cable-diagnostics tdr Use the test cable-diagnostics tdr privileged EXEC command to run the Time Domain Reflector (TDR) feature on an interface. test cable-diagnostics tdr interface interface-id Syntax Description interface-id Specify the interface on which to run TDR.
Page 528: Traceroute Mac
This command was introduced. Usage Guidelines For Layer 2 traceroute to function properly, Cisco Discovery Protocol (CDP) must be enabled on all the switches in the network. Do not disable CDP. When the switch detects a device in the Layer 2 path that does not support Layer 2 traceroute, the switch continues to send Layer 2 trace queries and lets them time out.
Page 529 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands traceroute mac Examples This example shows how to display the Layer 2 path by specifying the source and destination MAC addresses: Switch# traceroute mac 0000.0201.0601 0000.0201.0201 Source 0000.0201.0601 found on con6[WS-C2960-12T] (2.2.6.6) con6 (2.2.6.6) :Gi0/1 =>...
Page 530 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands traceroute mac This example shows the Layer 2 path when the switch cannot find the destination port for the source MAC address: Switch# traceroute mac 0000.0011.1111 0000.0201.0201 Error:Source Mac address not found.
Page 531: Traceroute Mac Ip
This command was introduced. Usage Guidelines For Layer 2 traceroute to function properly, Cisco Discovery Protocol (CDP) must be enabled on all the switches in the network. Do not disable CDP. When the switch detects an device in the Layer 2 path that does not support Layer 2 traceroute, the switch continues to send Layer 2 trace queries and lets them time out.
Page 532 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands traceroute mac ip The Layer 2 traceroute feature is not supported when multiple devices are attached to one port through hubs (for example, multiple CDP neighbors are detected on a port). When more than one CDP neighbor is detected on a port, the Layer 2 path is not identified, and an error message appears.
Page 533: Trust
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands trust trust Use the trust policy-map class configuration command to define a trust state for traffic classified through the class policy-map configuration or the class-map global configuration command. Use the no form of this command to return to the default setting.
Page 534 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands trust If you specify trust ip-precedence, QoS uses the IP precedence value from the ingress packet and the IP-precedence-to-DSCP map. For non-IP packets that are tagged, QoS uses the received CoS value; for non-IP packets that are untagged, QoS uses the default port CoS value.
Page 535: Udld
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands udld udld Use the udld global configuration command to enable aggressive or normal mode in the UniDirectional Link Detection (UDLD) and to set the configurable message timer time. Use the no form of the command to disable aggressive or normal mode UDLD on all fiber-optic ports.
Page 536 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands udld You can use these commands to reset an interface shut down by UDLD: The udld reset privileged EXEC command to reset all interfaces shut down by UDLD • • The shutdown and no shutdown interface configuration commands •...
Page 537: Udld Port
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands udld port udld port Use the udld port interface configuration command to enable the UniDirectional Link Detection (UDLD) on an individual interface or prevent a fiber-optic interface from being enabled by the udld global configuration command.
Page 538 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands udld port The no udld enable global configuration command followed by the udld {aggressive | enable} • global configuration command to re-enable UDLD globally The no udld port interface configuration command followed by the udld port or udld port •...
Page 539: Udld Reset
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands udld reset udld reset Use the udld reset privileged EXEC command to reset all interfaces disabled by the UniDirectional Link Detection (UDLD) and permit traffic to begin passing through them again (though other features, such as spanning tree, Port Aggregation Protocol (PAgP), and Dynamic Trunking Protocol (DTP) still have their normal effects, if enabled).
Page 540: Vlan (Global Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (global configuration) vlan (global configuration) Use the vlan global configuration command to add a VLAN and to enter the config-vlan mode. Use the no form of this command to delete the VLAN. Configuration information for normal-range VLANs (VLAN IDs 1 to 1005) is always saved in the VLAN database.
Page 541 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (global configuration) If you enter an invalid VLAN ID, you receive an error message and do not enter config-vlan mode. Entering the vlan command with a VLAN ID enables config-vlan mode. When you enter the VLAN ID of an existing VLAN, you do not create a new VLAN, but you can modify VLAN parameters for that VLAN.
Page 542 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (global configuration) name vlan-name: names the VLAN with an ASCII string from 1 to 32 characters that must be unique • within the administrative domain. The default is VLANxxxx where xxxx represents four numeric digits (including leading zeros) equal to the VLAN ID number.
Page 543 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (global configuration) Table 2-33 Valid Commands and Syntax for Different Media Types (continued) Media Type Valid Syntax FDDI-NET name vlan-name, media fd-net, state {suspend | active}, said said-value, mtu mtu-size, bridge bridge-number, stp type {ieee | ibm | auto}, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id If VTP v2 mode is disabled, do not set the stp type to auto.
Page 544 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (global configuration) Table 2-34 VLAN Configuration Rules (continued) Configuration Rule VTP v1 mode is enabled. No VLAN can have an STP type set to auto. This rule applies to Ethernet, FDDI, FDDI-NET, Token Ring, and Token Ring-NET VLANs.
Page 545: Vlan (Vlan Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) vlan (VLAN configuration) Use the vlan VLAN configuration command to configure VLAN characteristics for a normal-range VLAN (VLAN IDs 1 to 1005) in the VLAN database. You access VLAN configuration mode by entering vlan database privileged EXEC command.
Page 546 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) media {ethernet | fddi | (Optional) Specify the VLAN media type. Table 2-35 lists the valid fd-net | tokenring | tr-net} syntax for each media type. ethernet is Ethernet media type (the default).
Page 547 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) Table 2-35 Valid Syntax for Different Media Types Media Type Valid Syntax Ethernet vlan vlan-id [name vlan-name] media ethernet [state {suspend | active}] [said said-value] [mtu mtu-size] [tb-vlan1 tb-vlan1-id] [tb-vlan2 tb-vlan2-id]...
Page 548 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) Table 2-36 VLAN Configuration Rules (continued) Configuration Rule VTP v2 mode is enabled, and you Specify a bridge number. Do not leave this field blank. are configuring a TrBRF VLAN media type.
Page 549 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) Command History Release Modification 12.2(25)FX This command was introduced. Usage Guidelines You can only use this command mode for configuring normal-range VLANs, that is, VLAN IDs 1 to 1005.
Page 550 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan (VLAN configuration) When the no vlan vlan-id state form is used, the VLAN state returns to the default (active). • When the no vlan vlan-id stp type form is used, the VLAN spanning-tree type returns to the default •...
Page 551: Vlan Database
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan database vlan database Use the vlan database privileged EXEC command to enter VLAN configuration mode. From this mode, you can add, delete, and modify VLAN configurations for normal-range VLANs and globally propagate these changes by using the VLAN Trunking Protocol (VTP).
Page 552 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan database When you have modified VLAN or VTP parameters, you can use these editing buffer manipulation commands: abort: exits the mode without applying the changes. The VLAN configuration that was running •...
Page 553 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vlan database VLAN ISL Id: 1002 Name: fddi-default Media Type: FDDI VLAN 802.10 Id: 101002 State: Operational MTU: 1500 Bridge Type: SRB Ring Number: 0 Translational Bridged VLAN: 1 Translational Bridged VLAN: 1003 <output truncated>...
Page 554: Vmps Reconfirm (Privileged Exec)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vmps reconfirm (privileged EXEC) vmps reconfirm (privileged EXEC) Use the vmps reconfirm privileged EXEC command to immediately send VLAN Query Protocol (VQP) queries to reconfirm all dynamic VLAN assignments with the VLAN Membership Policy Server (VMPS).
Page 555: Vmps Reconfirm (Global Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vmps reconfirm (global configuration) vmps reconfirm (global configuration) Use the vmps reconfirm global configuration command to change the reconfirmation interval for the VLAN Query Protocol (VQP) client. Use the no form of this command to return to the default setting.
Page 556: Vmps Retry
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vmps retry vmps retry Use the vmps retry global configuration command to configure the per-server retry count for the VLAN Query Protocol (VQP) client. Use the no form of this command to return to the default setting.
Page 557: Vmps Server
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vmps server vmps server Use the vmps server global configuration command to configure the primary VLAN Membership Policy Server (VMPS) and up to three secondary servers. Use the no form of this command to remove a VMPS server.
Page 558 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vmps server You can verify your setting by entering the show vmps privileged EXEC command and examining information in the VMPS Domain Server row. Related Commands Command Description show vmps Displays VQP and VMPS information.
Page 559: Vtp (Global Configuration)
VTP administrative domain for the switch. The domain name is case sensitive. file filename Specify the Cisco IOS file system file where the VTP VLAN configuration is stored. interface name Specify the name of the interface providing the VTP ID updated for this device.
Page 560 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (global configuration) Defaults The default filename is flash:vlan.dat. The default mode is server mode. No domain name or password is defined. No password is configured. Pruning is disabled. The default version is Version 1.
Page 561 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (global configuration) If the receiving switch is in client mode, the client switch changes its configuration to duplicate the • configuration of the server. If you have switches in client mode, be sure to make all VTP or VLAN configuration changes on a switch in server mode.
Page 562 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (global configuration) Examples This example shows how to rename the filename for VTP configuration storage to vtpfilename: Switch(config)# vtp file vtpfilename This example shows how to clear the device storage filename: Switch(config)# no vtp file vtpconfig Clearing device storage filename.
Page 563: Vtp (Vlan Configuration)
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (VLAN configuration) vtp (VLAN configuration) Use the vtp VLAN configuration command to configure VLAN Trunking Protocol (VTP) characteristics. You access VLAN configuration mode by entering the vlan database privileged EXEC command. Use the no form of this command to return to the default settings, disable the characteristic, or remove the password.
Page 564 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (VLAN configuration) Defaults The default mode is server mode. No domain name is defined. No password is configured. Pruning is disabled. VTP Version 2 (v2 mode) is disabled. Command Modes VLAN configuration...
Page 565 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (VLAN configuration) Follow these guidelines when configuring a VTP domain name: The switch is in the no-management-domain state until you configure a domain name. While in the • no-management-domain state, the switch does not send any VTP advertisements even if changes occur to the local VLAN configuration.
Page 566 Chapter 2 Catalyst 2960 Switch Cisco IOS Commands vtp (VLAN configuration) This example shows how to enable pruning in the proposed new VLAN database: Switch(vlan)# vtp pruning Pruning switched ON This example shows how to enable v2 mode in the proposed new VLAN database: Switch(vlan)# vtp v2-mode V2 mode enabled.
Page 567: Appendix
You gain access to the boot loader command line if the switch is set to manually boot, if an error occurs during power-on self test (POST) DRAM testing, or if an error occurs while loading the operating system (a corrupted Cisco IOS image). You can also access the boot loader if you have lost or forgotten the switch password.
Page 568: Boot
(Optional) Run the loaded image with an extended or comprehensive power-on self-test (POST). Using this keyword causes POST to take longer to complete. (Optional) Pause for the Cisco IOS debugger immediately after launching. (Optional) Pause for the JTAG debugger right after loading the image.
Page 569 Appendix A Catalyst 2960 Switch Boot Loader Commands boot Related Commands Command Description Sets the BOOT environment variable to boot a specific image when the BOOT keyword is appended to the command. Catalyst 2960 Switch Command Reference 78-16882-01...
Page 570: Cat
Appendix A Catalyst 2960 Switch Boot Loader Commands Use the cat boot loader command to display the contents of one or more files. cat filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 571: Copy
Appendix A Catalyst 2960 Switch Boot Loader Commands copy copy Use the copy boot loader command to copy a file from a source to a destination. copy [-b block-size] filesystem:/source-file-url filesystem:/destination-file-url Syntax Description -b block-size (Optional) This option is used only for internal development and testing.
Page 572 Appendix A Catalyst 2960 Switch Boot Loader Commands delete delete Use the delete boot loader command to delete one or more files from the specified file system. delete filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 573: Dir
Appendix A Catalyst 2960 Switch Boot Loader Commands Use the dir boot loader command to display a list of files and directories on the specified file system. dir filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 574 Appendix A Catalyst 2960 Switch Boot Loader Commands Table A-1 describes the fields in the display. Table A-1 dir Field Descriptions Field Description Index number of the file. -rwx File permission, which can be any or all of the following: d—directory...
Page 575: Flash_Init
Appendix A Catalyst 2960 Switch Boot Loader Commands flash_init flash_init Use the flash_init boot loader command to initialize the flash file system. flash_init Syntax Description This command has no arguments or keywords. Defaults The flash file system is automatically initialized during normal system operation.
Page 576: Format
Appendix A Catalyst 2960 Switch Boot Loader Commands format format Use the format boot loader command to format the specified file system and destroy all data in that file system. format filesystem: Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 577: Fsck
Appendix A Catalyst 2960 Switch Boot Loader Commands fsck fsck Use the fsck boot loader command to check the file system for consistency. fsck [-test | -f] filesystem: Syntax Description -test (Optional) Initialize the file system code and perform extra POST on flash memory.
Page 578: Help
Appendix A Catalyst 2960 Switch Boot Loader Commands help help Use the help boot loader command to display the available commands. help Syntax Description This command has no arguments or keywords. Command Modes Boot loader Command History Release Modification 12.2(25)FX This command was introduced.
Page 579: Load_Helper
Appendix A Catalyst 2960 Switch Boot Loader Commands load_helper load_helper Use the load_helper boot loader command to load and initialize one or more helper images, which extend or patch the functionality of the boot loader. load_helper filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system.
Page 580: Memory
Appendix A Catalyst 2960 Switch Boot Loader Commands memory memory Use the memory boot loader command to display memory heap utilization information. memory Syntax Description This command has no arguments or keywords. Command Modes Boot loader Command History Release Modification 12.2(25)FX...
Page 581: Mkdir
Appendix A Catalyst 2960 Switch Boot Loader Commands mkdir mkdir Use the mkdir boot loader command to create one or more new directories on the specified file system. mkdir filesystem:/directory-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 582: More
Appendix A Catalyst 2960 Switch Boot Loader Commands more more Use the more boot loader command to display the contents of one or more files. more filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 583: Rename
Appendix A Catalyst 2960 Switch Boot Loader Commands rename rename Use the rename boot loader command to rename a file. rename filesystem:/source-file-url filesystem:/destination-file-url Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 584: Reset
Appendix A Catalyst 2960 Switch Boot Loader Commands reset reset Use the reset boot loader command to perform a hard reset on the system. A hard reset is similar to power-cycling the switch, clearing the processor, registers, and memory. reset Syntax Description This command has no arguments or keywords.
Page 585: Rmdir
Appendix A Catalyst 2960 Switch Boot Loader Commands rmdir rmdir Use the rmdir boot loader command to remove one or more empty directories from the specified file system. rmdir filesystem:/directory-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 586: Set
This variable is used only for internal development and testing. HELPER_CONFIG_FILE filesystem:/file-url—The name of the configuration file to be used by the Cisco IOS helper image. If this is not set, the file specified by the CONFIG_FILE environment variable is used by all versions of Cisco IOS that are loaded, including the helper image.
Page 587 Appendix A Catalyst 2960 Switch Boot Loader Commands Defaults The environment variables have these default values: MANUAL_BOOT: No (0) BOOT: Null string ENABLE_BREAK: No (Off or 0) (the automatic boot process cannot be interrupted by pressing the Break key on the console).
Page 588: Unset
Appendix A Catalyst 2960 Switch Boot Loader Commands The BOOTHLPR environment variable can also be set by using the boot boothlpr filesystem:/file-url global configuration command. The HELPER_CONFIG_FILE environment variable can also be set by using the boot helper-config-file filesystem:/file-url global configuration command.
Page 589 Appendix A Catalyst 2960 Switch Boot Loader Commands type type Use the type boot loader command to display the contents of one or more files. type filesystem:/file-url ... Syntax Description filesystem: Alias for a flash file system. Use flash: for the system board flash device.
Page 590 HELPER_CONFIG_FILE—Resets the name of the configuration file to be used by the Cisco IOS helper image. If this is not set, the file specified by the CONFIG_FILE environment variable is used by all versions of Cisco IOS that are loaded, including the helper image. This variable is used only for internal development and testing.
Page 591 Appendix A Catalyst 2960 Switch Boot Loader Commands unset Usage Guidelines Under normal circumstances, it is not necessary to alter the setting of the environment variables. The MANUAL_BOOT environment variable can also be reset by using the no boot manual global configuration command.
Page 592: Version
Appendix A Catalyst 2960 Switch Boot Loader Commands version version Use the version boot loader command to display the boot loader version. version Syntax Description This command has no arguments or keywords. Command Modes Boot loader Command History Release Modification 12.2(25)FX...
Page 593: Appendix
For this reason, use the debug commands only to troubleshoot specific problems or during troubleshooting sessions with Cisco technical support staff. It is best to use the debug commands during periods of lower network traffic and fewer users. Debugging during these periods decreases the likelihood that increased debug command processing overhead will affect system use.
Page 594: Debug Auto Qos
Appendix B Catalyst 2960 Switch Debug Commands debug auto qos debug auto qos Use the debug auto qos privileged EXEC command to enable debugging of the automatic quality of service (auto-QoS) feature. Use the no form of this command to disable debugging.
Page 595 Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 596: Debug Backup
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 597: Debug Cluster
Appendix B Catalyst 2960 Switch Debug Commands debug cluster debug cluster Use the debug cluster privileged EXEC command to enable debugging of cluster-specific events. Use the no form of this command to disable debugging. debug cluster {discovery | events | extended | hsrp | http | ip [packet] | members | nat | neighbors...
Page 598 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 599: Debug Dot1X
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 600: Debug Dtp
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 601: Debug Etherchannel
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 602: Debug Ip Dhcp Snooping
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 603: Debug Interface
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 604: Debug Ip Igmp Filter
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 605: Debug Ip Igmp Max-Groups
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 606: Debug Ip Igmp Snooping
Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 607: Debug Lacp
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 608: Debug Mac-Notification
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 609: Debug Matm
Displays information about platform-dependent MAC address management. show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 610: Debug Monitor
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 611: Debug Mvrdbg
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 612: Debug Nvram
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 613: Debug Pagp
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 614: Debug Platform Acl
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 615: Debug Platform Backup Interface
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 616: Debug Platform Cpu-Queues
Appendix B Catalyst 2960 Switch Debug Commands debug platform cpu-queues debug platform cpu-queues Use the debug platform cpu-queues privileged EXEC command to enable debugging of platform central processing unit (CPU) receive queues. Use the no form of this command to disable debugging.
Page 617 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 618: Debug Platform Dot1X
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 619: Debug Platform Etherchannel
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 620: Debug Platform Forw-Tcam
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 621: Debug Platform Ip Dhcp
Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 622: Debug Platform Ip Igmp Snooping
Appendix B Catalyst 2960 Switch Debug Commands debug platform ip igmp snooping debug platform ip igmp snooping Use the debug platform ip igmp snooping privileged EXEC command to enable debugging of platform-dependent Internet Group Management Protocol (IGMP) snooping. Use the no form of this command to disable debugging.
Page 623 Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 624: Debug Platform Led
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 625: Debug Platform Matm
Displays information about platform-independent MAC address management. show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 626: Debug Platform Messaging Application
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 627: Debug Platform Phy
Appendix B Catalyst 2960 Switch Debug Commands debug platform phy debug platform phy Use the debug platform phy privileged EXEC command to enable debugging of PHY driver information. Use the no form of this command to disable debugging. debug platform phy {automdix | cablediag | dual-purpose | flcd {configure | ipc | iter | trace} |...
Page 628 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 629: Debug Platform Pm
Appendix B Catalyst 2960 Switch Debug Commands debug platform pm debug platform pm Use the debug platform pm privileged EXEC command to enable debugging of the platform-dependent port manager software module. Use the no form of this command to disable debugging.
Page 630 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 631: Debug Platform Port-Asic
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 632: Debug Platform Port-Security
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 633: Debug Platform Qos-Acl-Tcam
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 634: Debug Platform Resource-Manager
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 635: Debug Platform Snmp
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 636: Debug Platform Span
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 637: Debug Platform Supervisor-Asic
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 638: Debug Platform Sw-Bridge
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 639: Debug Platform Tcam
Appendix B Catalyst 2960 Switch Debug Commands debug platform tcam debug platform tcam Use the debug platform tcam privileged EXEC command to enable debugging of ternary content addressable memory (TCAM) access and lookups. Use the no form of this command to disable debugging.
Page 640 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 641: Debug Platform Udld
Related Commands Command Description show debugging Displays information about the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management. Catalyst 2960 Switch Command Reference...
Page 642: Debug Platform Vlan
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 643: Debug Pm
Appendix B Catalyst 2960 Switch Debug Commands debug pm debug pm Use the debug pm privileged EXEC command to enable debugging of port manager (PM) activity. The port manager is a state machine that controls all the logical and physical interfaces. All features, such as VLANs, UniDirectional Link Detection (UDLD), and so forth, work with the port manager to provide switch functions.
Page 644 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 645: Debug Port-Security
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 646: Debug Qos-Manager
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, see the Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management >...
Page 647: Debug Spanning-Tree
Appendix B Catalyst 2960 Switch Debug Commands debug spanning-tree debug spanning-tree Use the debug spanning-tree privileged EXEC command to enable debugging of spanning-tree activities. Use the no form of this command to disable debugging. debug spanning-tree {all | backbonefast | bpdu | bpdu-opt | config | etherchannel | events |...
Page 648 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 649: Debug Spanning-Tree Backbonefast
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 650: Debug Spanning-Tree Bpdu
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 651: Debug Spanning-Tree Bpdu-Opt
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 652: Debug Spanning-Tree Mstp
Appendix B Catalyst 2960 Switch Debug Commands debug spanning-tree mstp debug spanning-tree mstp Use the debug spanning-tree mstp privileged EXEC command to enable debugging of the Multiple Spanning Tree Protocol (MSTP) software. Use the no form of this command to disable debugging.
Page 653 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 654: Debug Spanning-Tree Switch
Appendix B Catalyst 2960 Switch Debug Commands debug spanning-tree switch debug spanning-tree switch Use the debug spanning-tree switch privileged EXEC command to enable debugging of the software interface between the Spanning Tree Protocol (STP) software module and the port manager software module.
Page 655 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 656: Debug Spanning-Tree Uplinkfast
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 657: Debug Sw-Vlan
Appendix B Catalyst 2960 Switch Debug Commands debug sw-vlan debug sw-vlan Use the debug sw-vlan privileged EXEC command to enable debugging of VLAN manager activities. Use the no form of this command to disable debugging. debug sw-vlan {badpmcookies | cfg-vlan {bootup | cli} | events | ifs | management | mapping |...
Page 658 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 659: Debug Sw-Vlan Ifs
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 660: Debug Sw-Vlan Notification
Appendix B Catalyst 2960 Switch Debug Commands debug sw-vlan notification debug sw-vlan notification Use the debug sw-vlan notification privileged EXEC command to enable debugging of the activation and deactivation of Inter-Link Switch (ISL) VLAN IDs. Use the no form of this command to disable debugging.
Page 661 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 662: Debug Sw-Vlan Vtp
Appendix B Catalyst 2960 Switch Debug Commands debug sw-vlan vtp debug sw-vlan vtp Use the debug sw-vlan vtp privileged EXEC command to enable debugging of the VLAN Trunking Protocol (VTP) code. Use the no form of this command to disable debugging.
Page 663 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 664: Debug Udld
Appendix B Catalyst 2960 Switch Debug Commands debug udld debug udld Use the debug udld privileged EXEC command to enable debugging of the UniDirectional Link Detection (UDLD) feature. Use the no form of this command to disable UDLD debugging. debug udld {events | packets | registries}...
Page 665 Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 666: Debug Vqpc
Description show debugging Displays information about the types of debugging that are enabled. For syntax information, select Cisco IOS Release 12.2 Configuration Guides and Command References > Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2 > System Management > Troubleshooting and Fault Management.
Page 667: Appendix
This appendix describes the show platform privileged EXEC commands that have been created or changed for use with the Catalyst 2960 switch. These commands display information helpful in diagnosing and resolving internetworking problems and should be used only under the guidance of Cisco technical support staff.
Page 668: Show Platform Acl
Appendix C Catalyst 2960 Switch Show Platform Commands show platform acl show platform acl Use the show platform acl privileged EXEC command to display platform-dependent access control list (ACL) manager information. show platform acl {interface interface-id | label label-number [detail] | statistics asic-number |...
Page 669: Show Platform Backup Interface
Appendix C Catalyst 2960 Switch Show Platform Commands show platform backup interface show platform backup interface Use the show platform backup interface privileged EXEC command to display platform-dependent backup information used in a Flex Links configuration. show platform backup interface [interface-id | dummyQ] [ | {begin | exclude | include}...
Page 670: Show Platform Etherchannel
Appendix C Catalyst 2960 Switch Show Platform Commands show platform etherchannel show platform etherchannel Use the show platform etherchannel privileged EXEC command to display platform-dependent EtherChannel information. show platform etherchannel {flags | time-stamps} [ | {begin | exclude | include} expression]...
Page 671: Show Platform Forward
Appendix C Catalyst 2960 Switch Show Platform Commands show platform forward show platform forward Use the show platform forward privileged EXEC command for an interface to specify how the hardware would forward a frame that matches the specified parameters. show platform forward interface-id [vlan vlan-id] src-mac dst-mac [l3protocol-id] [sap | snap]...
Page 672 Appendix C Catalyst 2960 Switch Show Platform Commands show platform forward | include (Optional) Display includes lines that match the specified expression. expression Expression in the output to use as a reference point. Command Modes Privileged EXEC Command History Release Modification 12.2(25)FX...
Page 673: Show Platform Ip Igmp Snooping
Appendix C Catalyst 2960 Switch Show Platform Commands show platform ip igmp snooping show platform ip igmp snooping Use the show platform ip igmp snooping privileged EXEC command to display platform-dependent Internet Group Management Protocol (IGMP) snooping information. show platform ip igmp snooping {all | control [di] | counters | flood [vlan vlan-id] | group...
Page 674 Appendix C Catalyst 2960 Switch Show Platform Commands show platform ip igmp snooping Usage Guidelines You should use this command only when you are working directly with a technical support representative while troubleshooting a problem. Do not use this command unless a technical support representative asks you to do so.
Page 675: Show Platform Layer4Op
Appendix C Catalyst 2960 Switch Show Platform Commands show platform layer4op show platform layer4op Use the show platform layer4op privileged EXEC command to display platform-dependent Layer 4 operator information. show platform layer4op {acl | pacl [port-asic] | qos [port-asic]} {and-or | map | or-and | vcu}...
Page 676: Show Platform Mac-Address-Table
Appendix C Catalyst 2960 Switch Show Platform Commands show platform mac-address-table show platform mac-address-table Use the show platform mac-address-table privileged EXEC command to display platform-dependent MAC address table information. show platform mac-address-table [aging-array | hash-table | mac-address mac-address] [vlan vlan-id]] [ | {begin | exclude | include} expression]...
Page 677: Show Platform Messaging
Appendix C Catalyst 2960 Switch Show Platform Commands show platform messaging show platform messaging Use the show platform messaging privileged EXEC command to display platform-dependent application and performance message information. show platform messaging {application [incoming | outgoing | summary] | hiperf...
Page 678: Show Platform Monitor
Appendix C Catalyst 2960 Switch Show Platform Commands show platform monitor show platform monitor Use the show platform monitor privileged EXEC command to display platform-dependent Switched Port Analyzer (SPAN) information. show platform monitor [session session-number] [ | {begin | exclude | include} expression]...
Page 679: Show Platform Mvr Table
Appendix C Catalyst 2960 Switch Show Platform Commands show platform mvr table show platform mvr table Use the show platform mvr table privileged EXEC command to display the platform-dependent Multicast VLAN Registration (MVR) multi-expansion descriptor (MED) group mapping table. show platform mvr table [ | {begin | exclude | include} expression]...
Page 680: Show Platform Pm
Appendix C Catalyst 2960 Switch Show Platform Commands show platform pm show platform pm Use the show platform pm privileged EXEC command to display platform-dependent port-manager information. show platform pm {counters | group-masks | idbs {active-idbs | deleted-idbs} | if-numbers |...
Page 681: Show Platform Port-Asic
Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-asic show platform port-asic Use the show platform port-asic privileged EXEC command to display platform-dependent port ASIC register information. show platform port-asic {cpu-queue-map-table [asic number | port number [asic number]] |...
Page 682 Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-asic exception [asic number | port Display the exception-index register information. The keywords number [asic number]] have these meanings: asic number—(Optional) Display information for the • specified ASIC. The range is 0 to 1.
Page 683 Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-asic port-info [asic number | port Display port information register values. The keywords have these number [asic number]] meanings: asic number—(Optional) Display information for the • specified ASIC. The range is 0 to 1.
Page 684 Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-asic transmit {port-fifo | queue | Display transmit information. The keywords have these meanings: supervisor-sram} [asic number | port-fifo—Display the contents of the port-FIFO information • port number [asic number]] register.
Page 685 Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-asic Usage Guidelines You should use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
Page 686: Show Platform Port-Security
Appendix C Catalyst 2960 Switch Show Platform Commands show platform port-security show platform port-security Use the show platform port-security privileged EXEC command to display platform-dependent port-security information. show platform port-security [ | {begin | exclude | include} expression] Syntax Description | begin (Optional) Display begins with the line that matches the expression.
Page 687: Show Platform Qos
Appendix C Catalyst 2960 Switch Show Platform Commands show platform qos show platform qos Use the show platform qos privileged EXEC command to display platform-dependent quality of service (QoS) information. show platform qos {label asic number | policer {parameters asic number |...
Page 688: Show Platform Resource-Manager
Appendix C Catalyst 2960 Switch Show Platform Commands show platform resource-manager show platform resource-manager Use the show platform resource-manager privileged EXEC command to display platform-dependent resource-manager information. show platform resource-manager {dm [index number] | erd [index number] | mad [index number] | med [index number] | mod | msm {hash-table [vlan vlan-id] |...
Page 689 Appendix C Catalyst 2960 Switch Show Platform Commands show platform resource-manager | include (Optional) Display includes lines that match the specified expression. expression Expression in the output to use as a reference point. Command Modes Privileged EXEC Command History Release Modification 12.2(25)FX...
Page 690: Show Platform Snmp Counters
Appendix C Catalyst 2960 Switch Show Platform Commands show platform snmp counters show platform snmp counters Use the show platform snmp counters privileged EXEC command to display platform-dependent Simple Network Management Protocol (SNMP) counter information. show platform snmp counters [ | {begin | exclude | include} expression]...
Page 691: Show Platform Spanning-Tree
Appendix C Catalyst 2960 Switch Show Platform Commands show platform spanning-tree show platform spanning-tree Use the show platform spanning-tree privileged EXEC command to display platform-dependent spanning-tree information. show platform spanning-tree synchronization [detail | vlan vlan-id] [ | {begin | exclude |...
Page 692: Show Platform Stp-Instance
Appendix C Catalyst 2960 Switch Show Platform Commands show platform stp-instance show platform stp-instance Use the show platform stp-instance privileged EXEC command to display platform-dependent spanning-tree instance information. show platform stp-instance vlan-id [ | {begin | exclude | include} expression]...
Page 693: Show Platform Tcam
Appendix C Catalyst 2960 Switch Show Platform Commands show platform tcam show platform tcam Use the show platform tcam privileged EXEC command to display platform-dependent ternary content addressable memory (TCAM) driver information. show platform tcam {handle number | log-results | table {acl | all | local | mac-address | qos |...
Page 694 Appendix C Catalyst 2960 Switch Show Platform Commands show platform tcam usage Display the CAM and forwarding table usage. [[asic number [detail [invalid]] | Display information. The keywords have these meanings: [index number [detail [invalid]] | asic number—Display information for the specified ASIC •...
Page 695: Show Platform Vlan
Appendix C Catalyst 2960 Switch Show Platform Commands show platform vlan show platform vlan Use the show platform vlan privileged EXEC command to display platform-dependent VLAN information. show platform vlan {misc | mvid | prune | refcount | rpc {receive | transmit}} [ | {begin | exclude...
Page 696 Appendix C Catalyst 2960 Switch Show Platform Commands show platform vlan Catalyst 2960 Switch Command Reference C-30 78-16882-01...
Page 697: I N D E X
A-19 archive upload-sw command 2-11 displaying audience available commands A-12 authorization state of controlled port 2-71 memory heap utilization A-14 version A-26 Catalyst 2960 Switch Command Reference IN-1 78-16882-01...
Page 698 (boot loader) command communicating with caution, description devices outside the cluster 2-51 channel-group command 2-25 members by using Telnet 2-229 channel-protocol command 2-28 debug messages, display Cisco Network Assistant See Network Assistant Catalyst 2960 Switch Command Reference IN-2 78-16882-01...
Page 699 2-167 debug platform qos-acl-tcam command B-41 CoS-to-DSCP map 2-171 debug platform resource-manager command B-42 CPU ASIC statistics, displaying 2-268 debug platform snmp command B-43 debug platform span command B-44 Catalyst 2960 Switch Command Reference IN-3 78-16882-01...
Page 700 VLAN DTP flap 2-107 option 82 error detection for 2-100, 2-102 2-79 trust on an interface 2-105 error recovery timer 2-81 error recovery timer DTP negotiation 2-81 2-479 rate limiting 2-104 Catalyst 2960 Switch Command Reference IN-4 78-16882-01...
Page 701 2-298 files, deleting 2-58 LACP flash_init (boot loader) command clearing channel-group information Flex Links 2-34 debug messages, display B-15 configuring 2-473 displaying displaying 2-323 2-298 modes flowcontrol command 2-25 2-83 Catalyst 2960 Switch Command Reference IN-5 78-16882-01...
Page 702 See IGMP displaying 2-313 invalid GBIC IGMP snooping error detection for 2-79 adding ports as a static member of a group 2-127 error recovery timer 2-81 displaying 2-314, 2-319, 2-321 ip access-group command 2-91 Catalyst 2960 Switch Command Reference IN-6 78-16882-01...
Page 703 2-171 mac access-group command 2-137 IP source guard MAC access-groups, displaying 2-327 displaying MAC access list configuration mode 2-139 dynamic binding entries only 2-309 mac access-list extended command 2-139 ip ssh command 2-129 Catalyst 2960 Switch Command Reference IN-7 78-16882-01...
Page 704 2-193 adding a global description 2-154 mls qos srr-queue output dscp-map command 2-195 applying mls qos trust command 2-151 2-197 creating mode, MVR 2-155 2-204 displaying Mode button, and password recovery 2-372 2-238 Catalyst 2960 Switch Command Reference IN-8 78-16882-01...
Page 705 2-453 enabling BPDU filtering 2-419, 2-451 native VLANs 2-492 enabling BPDU guard 2-421, 2-451 Network Assistant requirements enabling Port Fast 2-451, 2-453 nonegotiate forward-delay time 2-440 DTP messaging 2-479 Catalyst 2960 Switch Command Reference IN-9 78-16882-01...
Page 706 2-75 creating 2-221 port-channel load-balance command 2-224 displaying 2-375 Port Fast, for spanning tree 2-453 policers port ranges, defining 2-56 displaying 2-348 ports, debugging B-51 for a single class 2-217 ports, protected 2-490 Catalyst 2960 Switch Command Reference IN-10 78-16882-01...
Page 707 WTD thresholds 2-191 displaying configuration information 2-253, 2-347 maps DSCP transparency 2-179 defining 2-171, 2-185, 2-187, 2-193, 2-195 DSCP trusted ports displaying 2-355 applying DSCP-to-DSCP-mutation map to 2-169 defining DSCP-to-DSCP-mutation map 2-171 Catalyst 2960 Switch Command Reference IN-11 78-16882-01...
Page 708 2-236 re-authentication SDM templates periodic displaying 2-74 2-380 time between attempts 2-75 secure ports, limitations 2-483 receiver ports, MVR sending flow-control packets 2-207 2-83 receiving flow-control packets service password-recovery command 2-83 2-238 Catalyst 2960 Switch Command Reference IN-12 78-16882-01...
Page 709 2-317 C-20 show ip igmp snooping mrouter command show platform qos command 2-319 C-21 show ip igmp snooping querier command show platform resource-manager command 2-321 C-22 Catalyst 2960 Switch Command Reference IN-13 78-16882-01...
Page 710 2-409 spanning-tree mst root command 2-447 SoftPhone spanning-tree portfast (global configuration) command 2-451 See Cisco SoftPhone spanning-tree portfast (interface configuration) software images command 2-453 deleting 2-58 spanning-tree port-priority command 2-449 downloading Catalyst 2960 Switch Command Reference IN-14 78-16882-01...
Page 711 2-495 root guard system message logging, save message to flash 2-428 2-135 UplinkFast 2-455 system mtu command 2-497 root switch system resource templates 2-236 affects of extended system ID 2-427, 2-458 hello-time 2-457 Catalyst 2960 Switch Command Reference IN-15 78-16882-01...
Page 712 VLAN IOS file system error tests B-67 unicast storm control 2-468 VLAN manager activity B-65 UniDirectional Link Detection B-70 See UDLD displaying configurations 2-397 unknown multicast traffic, preventing 2-475 extended-range 2-512 unknown unicast traffic, preventing 2-475 Catalyst 2960 Switch Command Reference IN-16 78-16882-01...
Page 713 2-529 2-512, 2-521 voice VLAN statistics 2-403 configuring status 2-495 2-403 setting port priority 2-488 status display fields 2-405 vtp (global configuration) command 2-531 vtp (VLAN configuration) command 2-535 Catalyst 2960 Switch Command Reference IN-17 78-16882-01...
Page 714 Index Catalyst 2960 Switch Command Reference IN-18 78-16882-01...

Cisco Catalyst 2960 Command Reference Manual

Preface

Chapter 1 Using the Command-Line Interface

Chapter 2 Catalyst 2960 Switch Cisco IOS Commands

Class

Delete

Dot1X

Duplex

Ip Ssh

MDIX Auto

Mls Qos

Police

Queue-Set

Rcommand

Set

Setup

Show Boot

Show Dtp

Show Env

Show Lacp

Show Mvr

Show Pagp

Show Udld

Show Vlan

Show Vmps

Show Vtp

Shutdown

Speed

Trust

Udld

Udld Port

Appendix

Catalyst 2960 Switch Boot Loader Commands

Boot

Cat

Copy

Dir

Format

Fsck

Help

Memory

Mkdir

More

Rename

Reset

Quick Links

Related Manuals for Cisco Catalyst 2960

Summary of Contents for Cisco Catalyst 2960