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Accton Technology ES4512C Management Manual

12/24/48-port gigabit intelligent switch
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ES4512C
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12/24/48-Port Gigabit
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Summary of Contents for Accton Technology ES4512C

  • Page 1 Powered by Accton ES4512C ES4524C ES4548C 12/24/48-Port Gigabit Intelligent Switch Management Guide www.edge-core.com...
  • Page 3 Installation Guide ES4512C 12-Port Gigabit Intelligent Switch Layer 2 Workgroup Switch with 12 1000BASE-T (RJ-45) Ports, and 4 Combination (RJ-45/SFP) Ports ES4524C 24-Port Gigabit Intelligent Switch Layer 2 Workgroup Switch with 24 1000BASE-T (RJ-45) Ports, and 4 Combination (RJ-45/SFP) Ports...
  • Page 4 ES4512C ES4524C ES4548C E052005-R02...

  • Page 5: Table Of Contents

    Contents Chapter 1: Introduction Key Features Description of Software Features System Defaults Chapter 2: Initial Configuration Connecting to the Switch Configuration Options Required Connections Remote Connections Basic Configuration Console Connection Setting Passwords Setting an IP Address Manual Configuration Dynamic Configuration Enabling SNMP Management Access Community Strings Trap Receivers...
  • Page 6 Contents System Log Configuration Remote Log Configuration Displaying Log Messages Sending Simple Mail Transfer Protocol Alerts Resetting the System Setting the System Clock Configuring SNTP Setting the Time Zone Simple Network Management Protocol Setting Community Access Strings Specifying Trap Managers and Trap Types User Authentication Configuring the Logon Password Configuring Local/Remote Logon Authentication...
  • Page 7 Displaying LACP Settings and Status for the Local Side Displaying LACP Settings and Status for the Remote Side Setting Broadcast Storm Thresholds Configuring Port Mirroring Configuring Rate Limits Showing Port Statistics Address Table Settings Setting Static Addresses Displaying the Address Table Changing the Aging Time Spanning Tree Algorithm Configuration Displaying Global Settings...
  • Page 8 Contents Mapping CoS Values to ACLs Changing Priorities Based on ACL Rules Multicast Filtering Layer 2 IGMP (Snooping and Query) Configuring IGMP Snooping and Query Parameters Displaying Interfaces Attached to a Multicast Router Specifying Static Interfaces for a Multicast Router Displaying Port Members of Multicast Services Assigning Ports to Multicast Services Configuring Domain Name Service...
  • Page 9 disconnect show line General Commands enable disable configure show history reload exit quit System Management Commands Device Designation Commands prompt hostname User Access Commands username enable password IP Filter Commands management show management Web Server Commands ip http port ip http server ip http secure-server ip http secure-port Telnet Server Commands...
  • Page 10 Contents logging facility logging trap clear logging show logging SMTP Alert Commands logging sendmail host logging sendmail level logging sendmail source-email logging sendmail destination-email logging sendmail show logging sendmail Time Commands sntp client sntp server sntp poll show sntp clock timezone calendar set show calendar System Status Commands...
  • Page 11 tacacs-server host tacacs-server port tacacs-server key show tacacs-server Port Security Commands port security 802.1x Port Authentication authentication dot1x default dot1x default dot1x max-req dot1x port-control dot1x operation-mode dot1x re-authenticate dot1x re-authentication dot1x timeout quiet-period dot1x timeout re-authperiod dot1x timeout tx-period show dot1x Access Control List Commands IP ACLs...
  • Page 12 Contents ACL Information show access-list show access-group SNMP Commands snmp-server community snmp-server contact snmp-server location snmp-server host snmp-server enable traps show snmp DNS Commands ip host clear host ip domain-name ip domain-list ip name-server ip domain-lookup show hosts show dns show dns cache clear dns cache Interface Commands...
  • Page 13 lacp admin-key (Port Channel) lacp port-priority show lacp Address Table Commands mac-address-table static clear mac-address-table dynamic show mac-address-table mac-address-table aging-time show mac-address-table aging-time Spanning Tree Commands spanning-tree spanning-tree mode spanning-tree forward-time spanning-tree hello-time spanning-tree max-age spanning-tree priority spanning-tree pathcost method spanning-tree transmission-limit spanning-tree mst configuration mst vlan...
  • Page 14 Contents switchport allowed vlan switchport forbidden vlan Displaying VLAN Information show vlan Configuring Private VLANs pvlan show pvlan Configuring Protocol-based VLANs protocol-vlan protocol-group (Configuring Groups) protocol-vlan protocol-group (Configuring Interfaces) show protocol-vlan protocol-group show interfaces protocol-vlan protocol-group GVRP and Bridge Extension Commands bridge-ext gvrp show bridge-ext switchport gvrp...
  • Page 15 IGMP Query Commands (Layer 2) ip igmp snooping querier ip igmp snooping query-count ip igmp snooping query-interval ip igmp snooping query-max-response-time ip igmp snooping router-port-expire-time Static Multicast Routing Commands ip igmp snooping vlan mrouter show ip igmp snooping mrouter IP Interface Commands ip address ip dhcp restart ip default-gateway...
  • Page 16 Contents...
  • Page 17 Tables Table 1-1. Key Features Table 1-2. System Defaults Table 3-1. Web Page Configuration Buttons Table 3-2. Switch Main Menu Table 3-3. Logging Levels Table 3-4. HTTPS System Support Table 3-5. 802.1x Statistics Table 3-6. LACP Port Counters Table 3-7. LACP Internal Configuration Information Table 3-8.
  • Page 18 Tables Table 4-27. Authentication Sequence Commands Table 4-28. RADIUS Client Commands Table 4-29. TACACS+ Client Commands Table 4-30. Port Security Commands Table 4-31. 802.1x Port Authentication Commands Table 4-32. Access Control List Commands Table 4-33. IP ACL Commands Table 4-34. Mapping CoS Values to IP ACLs Table 4-35.
  • Page 19 Figures Figure 3-1. Home Page Figure 3-2. Front Panel Indicators Figure 3-3. System Information Figure 3-4. Switch Information Figure 3-5. Displaying Bridge Extension Configuration Figure 3-6. IP Interface Configuration - Manual Figure 3-7. IP Interface Configuration - DHCP Figure 3-8. Downloading Firmware to the Switch Figure 3-9.
  • Page 20 Figures Figure 3-43. LACP - Aggregation Port Figure 3-44. LACP - Port Counters Information Figure 3-45. LACP - Port Internal Information Figure 3-46. LACP - Port Neighbors Information Figure 3-47. Port Broadcast Control Figure 3-48. Mirror Port Configuration Figure 3-49. Rate Limit Configuration Figure 3-50.
  • Page 21 Figure 3-88. DNS General Configuration Figure 3-89. DNS Static Host Table Figure 3-90. DNS Cache Figures 3-147 3-149 3-150 xvii...
  • Page 22 Figures xviii...

  • Page 23: Chapter 1: Introduction

    Chapter 1: Introduction This switch provides a broad range of features for Layer 2 switching. It includes a management agent that allows you to configure the features listed in this manual. The default configuration can be used for most of the features provided by this switch.

  • Page 24: Description Of Software Features

    Introduction Description of Software Features The switch provides a wide range of advanced performance enhancing features. Flow control eliminates the loss of packets due to bottlenecks caused by port saturation. Broadcast storm suppression prevents broadcast traffic storms from engulfing the network. Untagged (port-based), tagged, and protocol-based VLANs, plus support for automatic GVRP VLAN registration provide traffic security and efficient use of network bandwidth.
  • Page 25 Description of Software Features Port Mirroring – The switch can unobtrusively mirror traffic from any port to a monitor port. You can then attach a protocol analyzer or RMON probe to this port to perform traffic analysis and verify connection integrity. Port Trunking –...
  • Page 26 Introduction Multiple Spanning Tree Protocol (MSTP, IEEE 802.1s) – This protocol is a direct extension of RSTP. It can provide an independent spanning tree for different VLANs. It simplifies network management, provides for even faster convergence than RSTP by limiting the size of each region, and prevents VLAN members from being segmented from the rest of the group (as sometimes occurs with IEEE 802.1D STP).

  • Page 27: System Defaults

    System Defaults The switch’s system defaults are provided in the configuration file “Factory_Default_Config.cfg.” To reset the switch defaults, this file should be set as the startup configuration file (page 3-18). The following table lists some of the basic system defaults. Function Parameter Console Port...
  • Page 28 Introduction Function Parameter Port Configuration Admin Status Auto-negotiation Flow Control Port Capability Module Port Capability Rate Limiting Input and output limits Port Trunking Static Trunks LACP (all ports) Broadcast Storm Status Protection Broadcast Limit Rate Spanning Tree Status Protocol Fast Forwarding (Edge Port) Address Table Aging Time Virtual LANs...
  • Page 29 Function Parameter IP Settings IP Address Subnet Mask Default Gateway DHCP BOOTP DNS Server Lookup Multicast Filtering IGMP Snooping System Log Status Messages Logged Messages Logged to Flash SMTP Email Alerts Event Handler SNTP Clock Synchronization Table 1-2. System Defaults Default 0.0.0.0 255.0.0.0...
  • Page 30 Introduction...

  • Page 31: Chapter 2: Initial Configuration

    Chapter 2: Initial Configuration Connecting to the Switch Configuration Options The switch includes a built-in network management agent. The agent offers a variety of management options, including SNMP, RMON and a Web-based interface. A PC may also be connected directly to the switch for configuration and monitoring via a command line interface (CLI).

  • Page 32: Required Connections

    Initial Configuration • Enable port mirroring • Set broadcast storm control on any port • Display system information and statistics Required Connections The switch provides an RS-232 serial port that enables a connection to a PC or terminal for monitoring and configuring the switch. A null-modem console cable is provided with the switch.

  • Page 33: Remote Connections

    Remote Connections Prior to accessing the switch’s onboard agent via a network connection, you must first configure it with a valid IP address, subnet mask, and default gateway using a console connection, DHCP or BOOTP protocol. The IP address for this switch is obtained via DHCP by default. To manually configure this address or enable dynamic address assignment via DHCP or BOOTP, see “Setting an IP Address”...

  • Page 34: Setting Passwords

    Initial Configuration Setting Passwords Note: If this is your first time to log into the CLI program, you should define new passwords for both default user names using the “username” command, record them and put them in a safe place. Passwords can consist of up to 8 alphanumeric characters and are case sensitive.

  • Page 35: Dynamic Configuration

    Before you can assign an IP address to the switch, you must obtain the following information from your network administrator: • IP address for the switch • Default gateway for the network • Network mask for this network To assign an IP address to the switch, complete the following steps: From the Privileged Exec level global configuration mode prompt, type “interface vlan 1”...

  • Page 36: Enabling Snmp Management Access

    Initial Configuration Wait a few minutes, and then check the IP configuration settings by typing the “show ip interface” command. Press <Enter>. Then save your configuration changes by typing “copy running-config startup-config.” Enter the startup file name and press <Enter>. Console(config)#interface vlan 1 Console(config-if)#ip address dhcp Console(config-if)#end...

  • Page 37: Trap Receivers

    To configure a community string, complete the following steps: From the Privileged Exec level global configuration mode prompt, type “snmp-server community string mode,” where “string” is the community access string and “mode” is rw (read/write) or ro (read only). Press <Enter>. (Note that the default mode is read only.) To remove an existing string, simply type “no snmp-server community string,”...

  • Page 38: Managing System Files

    Initial Configuration Enter the name of the start-up file. Press <Enter>. Console#copy running-config startup-config Startup configuration file name []: startup \Write to FLASH Programming. \Write to FLASH finish. Success. Console# Managing System Files The switch’s flash memory supports three types of system files that can be managed by the CLI program, Web interface, or SNMP.

  • Page 39: Chapter 3: Configuring The Switch

    Chapter 3: Configuring the Switch Using the Web Interface This switch provides an embedded HTTP Web agent. Using a Web browser you can configure the switch and view statistics to monitor network activity. The Web agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 5.0 or above, or Netscape Navigator 6.2 or above).

  • Page 40: Navigating The Web Browser Interface

    Note: The screen captures used in this manual are based on either the ES4512C ES4524C or ES4548C, but are all the same for both switches except for the port count.

  • Page 41: Configuration Options

    Configuration Options Configurable parameters have a dialog box or a drop-down list. Once a configuration change has been made on a page, be sure to click on the “Apply” button to confirm the new setting. The following table summarizes the web page configuration buttons.

  • Page 42: Main Menu

    Configuring the Switch Main Menu Using the onboard web agent, you can define system parameters, manage and control the switch, and all its ports, or monitor network conditions. The following table briefly describes the selections available from this program. Menu System System Information Switch Information...
  • Page 43 Menu 802.1x Information Configuration Port Configuration Statistics Configuration Mask Configuration Port Binding IP Filter Port Port Information Trunk Information Port Configuration Trunk Configuration Trunk Membership LACP Configuration Aggregation Port Port Counters Information Port Internal Information Port Neighbors Information Displays settings and operational state for remote side Port Broadcast Control Trunk Broadcast Control Mirror Port Configuration...
  • Page 44 Configuring the Switch Menu Address Table Static Addresses Dynamic Addresses Address Aging Spanning Tree Information Configuration Port Information Trunk Information Port Configuration Trunk Configuration MSTP VLAN Configuration Port Information Trunk Information Port Configuration Trunk Configuration VLAN 802.1Q VLAN GVRP Status Basic Information Current Table Static List...
  • Page 45 Menu Protocol VLAN Configuration Port Configuration Priority Default Port Priority Default Trunk Priority Traffic Classes Traffic Classes Status Queue Mode Queue Scheduling IP Precedence/ DSCP Priority Status IP Precedence Priority IP DSCP Priority IP Port Priority Status IP Port Priority ACL CoS Priority ACL Marker IGMP Snooping...
  • Page 46 Configuring the Switch Menu General Configuration Static Host Table Cache Table 3-2. Switch Main Menu Description Enables DNS; configures domain name and domain list; and specifies IP address of name servers for dynamic lookup Configures static entries for domain name to address mapping Displays cache entries discovered by designated name servers Page 3-146...

  • Page 47: Basic Configuration

    Basic Configuration Basic Configuration Displaying System Information You can easily identify the system by displaying the device name, location and contact information. Field Attributes • System Name – Name assigned to the switch system. • Object ID – MIB II object ID for switch’s network management subsystem. •...

  • Page 48: Displaying Switch Hardware/Software Versions

    Configuring the Switch CLI – Specify the hostname, location and contact information. Console(config)#hostname R&D 5 Console(config)#snmp-server location WC 9 Console(config)#snmp-server contact Ted Console(config)#exit Console#show version Unit1 Serial number Hardware version Number of ports Main power status Redundant power status :not present Agent(master) Unit id Loader version...
  • Page 49 • Redundant Power Status* – Displays the status of the redundant power supply. * CLI only. Management Software • Loader Version – Version number of loader code. • Boot-ROM Version – Version of Power-On Self-Test (POST) and boot code. • Operation Code Version – Version number of runtime code. •...

  • Page 50: Displaying Bridge Extension Capabilities

    Configuring the Switch Displaying Bridge Extension Capabilities The Bridge MIB includes extensions for managed devices that support Multicast Filtering, Traffic Classes, and Virtual LANs. You can access these extensions to display default settings for the key variables. Field Attributes • Extended Multicast Filtering Services – This switch does not support the filtering of individual multicast addresses based on GMRP (GARP Multicast Registration Protocol).

  • Page 51: Setting The Switch's Ip Address

    CLI – Enter the following command. Console#show bridge-ext Max support vlan numbers: 255 Max support vlan ID: 4094 Extended multicast filtering services: No Static entry individual port: Yes VLAN learning: IVL Configurable PVID tagging: Yes Local VLAN capable: No Traffic classes: Enabled Global GVRP status: Disabled GMRP: Disabled Console#...

  • Page 52: Manual Configuration

    Configuring the Switch Manual Configuration Web – Click System, IP Configuration. Select the VLAN through which the management station is attached, set the IP Address Mode to “Static,” enter the IP address, subnet mask and gateway, then click Apply. Figure 3-6. IP Interface Configuration - Manual CLI –...

  • Page 53: Using Dhcp/Bootp

    Using DHCP/BOOTP If your network provides DHCP/BOOTP services, you can configure the switch to be dynamically configured by these services. Web – Click System, IP Configuration. Specify the VLAN to which the management station is attached, set the IP Address Mode to DHCP or BOOTP. Click Apply to save your changes.

  • Page 54: Managing Firmware

    Configuring the Switch CLI – Enter the following command to restart DHCP service. Console#ip dhcp restart Console# Managing Firmware You can upload/download firmware to or from a TFTP server. By saving runtime code to a file on a TFTP server, that file can later be downloaded to the switch to restore operation.

  • Page 55: Saving Or Restoring Configuration Settings

    If you download to a new destination file, then select the file from the drop-down box for the operation code used at startup, and click Apply Changes. To start the new firmware, reboot the system via the System/Reset menu. Figure 3-9. Setting the Startup Code CLI –...

  • Page 56: Downloading Configuration Settings From A Server

    Configuring the Switch Downloading Configuration Settings from a Server You can download the configuration file under a new file name and then set it as the startup file, or you can specify the current startup configuration file as the destination file to directly replace it.

  • Page 57: Configuring Event Logging

    If you download the startup configuration file under a new file name, you can set this file as the startup file at a later time, and then restart the switch. Console#config Console(config)#boot system config: startup-new Console(config)#exit Console#reload Configuring Event Logging The switch allows you to control the logging of error messages, including the type of events that are recorded in switch memory, logging to a remote System Log (syslog) server, and displays a list of recent event messages.

  • Page 58: Remote Log Configuration

    Configuring the Switch • RAM Level – Limits log messages saved to the switch’s temporary RAM memory for all levels up to the specified level. For example, if level 7 is specified, all messages from level 0 to level 7 will be logged to RAM. (Range: 0-7, Default: 7) Note: The Flash Level must be equal to or less than the RAM Level.
  • Page 59 • Logging Trap – Limits log messages that are sent to the remote syslog server for all levels up to the specified level. For example, if level 3 is specified, all messages from level 0 to level 3 will be sent to the remote server. (Range: 0-7, Default: 7) •...

  • Page 60: Displaying Log Messages

    Configuring the Switch CLI – Enter the syslog server host IP address, choose the facility type and set the logging trap. Console(config)#logging host 10.1.0.9 Console(config)#logging facility 23 Console(config)#logging trap 4 Console(config)#logging trap Console(config)# Console#show logging trap Syslog logging: REMOTELOG status: REMOTELOG facility type: REMOTELOG level type: REMOTELOG server ip address: 10.1.0.9...

  • Page 61: Sending Simple Mail Transfer Protocol Alerts

    CLI – This example shows that system logging is enabled, the message level for flash memory is “errors” (i.e., default level 3 - 0), the message level for RAM is “debugging” (i.e., default level 7 - 0), and lists one sample error. Console#show logging flash Syslog logging: Enable History logging in FLASH: level errors...
  • Page 62 Configuring the Switch Web – Click System, Log, SMTP. Enable SMTP, specify a source email address, and select the minimum severity level. To add an IP address to the SMTP Server List, type the new IP address in the SMTP Server field and click Add. To delete an IP address, click the entry in the SMTP Server List and click Remove.

  • Page 63: Resetting The System

    CLI – Enter the IP address of at least one SMTP server, set the syslog severity level to trigger an email message, and specify the switch (source) and up to five recipient (destination) email addresses. Enable SMTP with the logging sendmail command to complete the configuration.

  • Page 64: Setting The System Clock

    Configuring the Switch Setting the System Clock Simple Network Time Protocol (SNTP) allows the switch to set its internal clock based on periodic updates from a time server (SNTP or NTP). Maintaining an accurate time on the switch enables the system log to record meaningful dates and times for event entries.

  • Page 65: Setting The Time Zone

    CLI – This example configures the switch to operate as an SNTP client and then displays the current time and settings. Console(config)#sntp client Console(config)#sntp poll 16 Console(config)#sntp server 10.1.0.19 137.82.140.80 128.250.36.2 Console(config)#exit Console#show sntp Current time: 6 14:56:05 2004 Poll interval: 60 Current mode: unicast...

  • Page 66: Simple Network Management Protocol

    Configuring the Switch CLI - This example shows how to set the time zone for the system clock. Console(config)#clock timezone Dhaka hours 6 minute 0 after-UTC Console# Simple Network Management Protocol Simple Network Management Protocol (SNMP) is a communication protocol designed specifically for managing devices on a network.

  • Page 67: Specifying Trap Managers And Trap Types

    Web – Click SNMP, Configuration. Add new community strings as required, select the access rights from the Access Mode drop-down list, then click Add. Figure 3-19. Configuring SNMP Community Strings CLI – The following example adds the string “spiderman” with read/write access. Console(config)#snmp-server community spiderman rw Console(config)# Specifying Trap Managers and Trap Types...

  • Page 68: User Authentication

    Configuring the Switch Web – Click SNMP, Configuration. Fill in the IP address and community string for each trap manager that will receive these messages, specify the SNMP version, mark the trap types required, and then click Add. Figure 3-20. Configuring SNMP Trap Managers CLI –...

  • Page 69: Configuring Local/Remote Logon Authentication

    Command Attributes • User Name* – The name of the user. (Maximum length: 8 characters) • Access Level* – Specifies the user level. (Options: Normal and Privileged) • Password – Specifies the user password. (Range: 0-8 characters plain text, case sensitive) * CLI only.
  • Page 70 Configuring the Switch RADIUS uses UDP while TACACS+ uses TCP. UDP only offers best effort delivery, while TCP offers a connection-oriented transport. Also, note that RADIUS encrypts only the password in the access-request packet from the client to the server, while TACACS+ encrypts the entire body of the packet.
  • Page 71 Note: The local switch user database has to be set up by manually entering user names and passwords using the CLI. (See “username” on page 4-26.) Web – Click Security, Authentication Settings. To configure local or remote authentication preferences, specify the authentication sequence (i.e., one to three methods), fill in the parameters for RADIUS or TACACS+ authentication if selected, and click Apply.

  • Page 72: Configuring Https

    Configuring the Switch CLI – Specify all the required parameters to enable logon authentication. Console(config)#authentication login radius Console(config)#radius-server host 192.168.1.25 Console(config)#radius-server port 181 Console(config)#radius-server key green Console(config)#radius-server retransmit 5 Console(config)#radius-server timeout 10 Console#show radius-server Remote radius server configuration: Server IP address: 192.168.1.25 Communication key with radius server: Server port number: 1812 Retransmit times: 5...

  • Page 73: Replacing The Default Secure-Site Certificate

    • The following web browsers and operating systems currently support HTTPS: Table 3-4. HTTPS System Support Web Browser Internet Explorer 5.0 or later Netscape Navigator 4.76 or later • To specify a secure-site certificate, see “Replacing the Default Secure-site Certificate” on page 3-35. Command Attributes •...

  • Page 74: Configuring The Secure Shell

    Configuring the Switch Caution: For maximum security, we recommend you obtain a unique Secure Sockets Layer certificate at the earliest opportunity. This is because the default certificate for the switch is not unique to the hardware you have purchased. When you have obtained these, place them on your TFTP server, and use the following command at the switch's command-line interface to replace the default (unrecognized) certificate with an authorized one: Console#copy tftp https-certificate...
  • Page 75 To use the SSH server, complete these steps: Generate a Host Key Pair – On the SSH Host Key Settings page, create a host public/private key pair. Provide Host Public Key to Clients – Many SSH client programs automatically import the host public key during the initial connection setup with the switch. Otherwise, you need to manually create a known hosts file on the management station and place the host public key in it.

  • Page 76: Generating The Host Key Pair

    Configuring the Switch The switch compares the decrypted bytes to the original bytes it sent. If the two sets match, this means that the client's private key corresponds to an authorized public key, and the client is authenticated. Notes: 1. To use SSH with only password authentication, the host public key must still be given to the client, either during initial connection or manually entered into the known host file.
  • Page 77 Web – Click Security, SSH Host-Key Settings. Select the host-key type from the drop-down box, select the option to save the host key from memory to flash (if required) prior to generating the key, and then click Generate. Figure 3-23. SSH Host-Key Settings CLI –...

  • Page 78: Configuring The Ssh Server

    Configuring the Switch Configuring the SSH Server The SSH server includes basic settings for authentication. Field Attributes • SSH Server Status – Allows you to enable/disable the SSH server on the switch. (Default: Disabled) • Version – The Secure Shell version number. Version 2.0 is displayed, but the switch supports management access via either SSH Version 1.5 or 2.0 clients.

  • Page 79: Configuring Port Security

    CLI – This example enables SSH, sets the authentication parameters, and displays the current configuration. It shows that the administrator has made a connection via SHH, and then disables this connection. Console(config)#ip ssh server Console(config)#ip ssh timeout 100 Console(config)#ip ssh authentication-retries 5 Console(config)#ip ssh server-key size 512 Console(config)#end Console#show ip ssh...
  • Page 80 Configuring the Switch • If a port is disabled (shut down) due to a security violation, it must be manually re-enabled from the Port/Port Configuration page (page 3-67). Command Attributes • Port – Port number. • Name – Descriptive text (page 4-126). •...

  • Page 81: Configuring 802.1X Port Authentication

    CLI – This example selects the target port, sets the port security action to send a trap and disable the port, specifies a maximum address count, and then enables port security for the port. Console(config)#interface ethernet 1/5 Console(config-if)#port security action trap-and-shutdown Console(config-if)#port security max-mac-count 20 Console(config-if)#port security Console(config-if)#...

  • Page 82: Displaying 802.1X Global Settings

    Configuring the Switch The operation of 802.1x on the switch requires the following: • The switch must have an IP address assigned. • RADIUS authentication must be enabled on the switch and the IP address of the RADIUS server specified. •...
  • Page 83 Web – Click Security, 802.1x, Information. Figure 3-26. 802.1x Information CLI – This example shows the default protocol settings for 802.1x. For a description of the additional entries displayed in the CLI, See “show dot1x” on page 4-83. Console#show dot1x Global 802.1X Parameters reauth-enabled: yes reauth-period:...

  • Page 84: Configuring 802.1X Global Settings

    Configuring the Switch 802.1X is enabled on port Status Authorized Operation mode Single-Host Max count Port-control Auto Supplicant 00-00-e8-49-5e-dc Current Identifier Authenticator State Machine State Authenticated Reauth Count Backend State Machine State Idle Request Count Identifier(Server) Reauthentication State Machine State Initialize Console# Configuring 802.1x Global Settings...

  • Page 85: Configuring Port Authorization Mode

    Web – Select Security, 802.1x, Configuration. Enable dot1x globally for the switch, modify any of the parameters required, and then click Apply. Figure 3-27. 802.1X Configuration CLI – This enables re-authentication and sets all of the global parameters for 802.1x. Console(config)#dot1x re-authentication Console(config)#dot1x max-req 5 Console(config)#dot1x timeout quiet-period 40...

  • Page 86: Displaying 802.1X Statistics

    Configuring the Switch • Authorized – - Yes – Connected client is authorized. - No – Connected client is not authorized. - Blank – Displays nothing when dot1x is disabled on a port. • Supplicant – Indicates the MAC address of a connected client. •...
  • Page 87 Parameter Rx EAP Resp/Oth Rx EAP LenError Rx Last EAPOLVer Rx Last EAPOLSrc Tx EAPOL Total Tx EAP Req/Id Tx EAP Req/Oth Web – Select Security, 802.1x, Statistics. Select the required port and then click Query. Click Refresh to update the statistics. Figure 3-29.

  • Page 88: Filtering Ip Addresses For Management Access

    Configuring the Switch CLI – This example displays the 802.1x statistics for port 4. Console#show dot1x statistics interface ethernet 1/4 Eth 1/4 Rx: EAPOL EAPOL Start Logoff Last Last EAPOLVer EAPOLSrc 00-00-E8-98-73-21 Tx: EAPOL Total Req/Id 2017 1005 Console# Filtering IP Addresses for Management Access You can create a list of up to 16 IP addresses or IP address groups that are allowed management access to the switch through the web interface, SNMP, or Telnet.
  • Page 89 Web – Click Security, IP Filter. Enter the addresses that are allowed management access to an interface, and click Add IP Filtering Entry. CLI – This example allows SNMP access for a specific client. Console(config)#management snmp-client 10.1.2.3 Console(config)#end Console#show management all-client Management Ip Filter Http-Client: Start ip address End ip address...

  • Page 90: Access Control Lists

    Configuring the Switch Access Control Lists Access Control Lists (ACL) provide packet filtering for IP frames (based on address, protocol, Layer 4 protocol port number or TCP control code) or any frames (based on MAC address or Ethernet type). To filter incoming packets, first create an access list, add the required rules, specify a mask to modify the precedence in which the rules are checked, and then bind the list to a specific port.

  • Page 91: Setting The Acl Name And Type

    Setting the ACL Name and Type Use the ACL Configuration page to designate the name and type of an ACL. Command Attributes • Name – Name of the ACL. (Maximum length: 16 characters) • Type – There are three filtering modes: - Standard: IP ACL mode that filters packets based on the source IP address.
  • Page 92 Configuring the Switch The mask is bitwise ANDed with the specified source IP address, and compared with the address for each IP packet entering the port(s) to which this ACL has been assigned. Web – Specify the action (i.e., Permit or Deny). Select the address type (Any, Host, or IP).

  • Page 93: Configuring An Extended Ip Acl

    Configuring an Extended IP ACL Command Attributes • Action – An ACL can contain either all permit rules or all deny rules. (Default: Permit rules) • Src/Dst IP – Specifies the source or destination IP address. Use “Any” to include all possible addresses, “Host”...
  • Page 94 Configuring the Switch Web – Specify the action (i.e., Permit or Deny). Specify the source and/or destination addresses. Select the address type (Any, Host, or IP). If you select “Host,” enter a specific address. If you select “IP,” enter a subnet address and the mask for an address range.

  • Page 95: Configuring A Mac Acl

    Configuring a MAC ACL Command Attributes • Action – An ACL can contain all permit rules or all deny rules. (Default: Permit rules) • Source/Destination MAC – Use “Any” to include all possible addresses, “Host” to indicate a specific MAC address, or “MAC” to specify an address range with the Address and Bitmask fields.
  • Page 96 Configuring the Switch Web – Specify the action (i.e., Permit or Deny). Specify the source and/or destination addresses. Select the address type (Any, Host, or MAC). If you select “Host,” enter a specific address (e.g., 11-22-33-44-55-66). If you select “MAC,” enter a base address and a hexidecimal bitmask for an address range.

  • Page 97: Configuring Acl Masks

    Configuring ACL Masks You can specify optional masks that control the order in which ACL rules are checked. The switch includes two system default masks that pass/filter packets matching the permit/deny rules specified in an ingress ACL. You can also configure up to seven user-defined masks for an ingress or egress ACL.

  • Page 98: Configuring An Ip Acl Mask

    Configuring the Switch Configuring an IP ACL Mask This mask defines the fields to check in the IP header. Command Usage • Masks that include an entry for a Layer 4 protocol source port or destination port can only be applied to packets with a header length of exactly five bytes. Command Attributes •...
  • Page 99 Web – Configure the mask to match the required rules in the IP ingress or egress ACLs. Set the mask to check for any source or destination address, a specific host address, or an address range. Include other criteria to search for in the rules, such as a protocol type or one of the service types.

  • Page 100: Configuring A Mac Acl Mask

    Configuring the Switch Configuring a MAC ACL Mask This mask defines the fields to check in the packet header. Command Usage You must configure a mask for an ACL rule before you can bind it to a port. Command Attributes •...

  • Page 101: Binding A Port To An Access Control List

    CLI – This example shows how to create an Ingress MAC ACL and bind it to a port. You can then see that the order of the rules have been changed by the mask. Console(config)#access-list mac M4 Console(config-mac-acl)#permit any any Console(config-mac-acl)#deny tagged-eth2 00-11-11-11-11-11 ff-ff-ff-ff-ff-ff any vid 3 Console(config-mac-acl)#end...

  • Page 102: Port Configuration

    Configuring the Switch Web – Click Security, ACL, Port Binding. Mark the Enable field for the port you want to bind to an ACL for ingress or egress traffic, select the required ACL from the drop-down list, then click Apply. Figure 3-38.
  • Page 103 • Forced Mode – Shows the forced/preferred port type to use for combination ports 21-24 or 45-48. (Copper-Forced, Copper-Preferred-Auto, SFP-Forced, SFP-Preferred-Auto) • Trunk Member – Shows if port is a trunk member. • Creation – Shows if a trunk is manually configured or dynamically set via LACP. 1: Port Information only.
  • Page 104 Configuring the Switch • Broadcast storm – Shows if broadcast storm control is enabled or disabled. • Broadcast storm limit – Shows the broadcast storm threshold. (500 - 262143 packets per second) • Flow control – Shows if flow control is enabled or disabled. •...

  • Page 105: Configuring Interface Connections

    Configuring Interface Connections You can use the Port Configuration or Trunk Configuration page to enable/disable an interface, set auto-negotiation and the interface capabilities to advertise, or manually fix the speed, duplex mode, and flow control. Command Attributes • Name – Allows you to label an interface. (Range: 1-64 characters) •...
  • Page 106 Configuring the Switch • Trunk – Indicates if a port is a member of a trunk. To create trunks and select port members, see “Creating Trunk Groups” on page 3-69. Note: Auto-negotiation must be disabled before you can configure or force the interface to use the Speed/Duplex Mode or Flow Control options.

  • Page 107: Creating Trunk Groups

    Creating Trunk Groups You can create multiple links between devices that work as one virtual, aggregate link. A port trunk offers a dramatic increase in bandwidth for network segments where bottlenecks exist, as well as providing a fault-tolerant link between two devices.

  • Page 108: Statically Configuring A Trunk

    Configuring the Switch Statically Configuring a Trunk Command Usage • When configuring static trunks, you may not be able to link switches of different types, depending on the manufacturer’s implementation. However, note that the static trunks on this switch are Cisco EtherChannel compatible.

  • Page 109: Enabling Lacp On Selected Ports

    CLI – This example creates trunk 2 with ports 1 and 2. Just connect these ports to two static trunk ports on another switch to form a trunk. Console(config)#interface port-channel 1 Console(config-if)#exit Console(config)#interface ethernet 1/1 Console(config-if)#channel-group 1 Console(config-if)#exit Console(config)#interface ethernet 1/2 Console(config-if)#channel-group 1 Console(config-if)#end Console#show interfaces status port-channel 1...
  • Page 110 Configuring the Switch Web – Click Port, LACP, Configuration. Select any of the switch ports from the scroll-down port list and click Add. After you have completed adding ports to the member list, click Apply. Figure 3-42. LACP Trunk Configuration CLI –...

  • Page 111: Configuring Lacp Parameters

    Configuring LACP Parameters Dynamically Creating a Port Channel – Ports assigned to a common port channel must meet the following criteria: • Ports must have the same LACP System Priority. • Ports must have the same LACP port Admin Key. •...
  • Page 112 Configuring the Switch Web – Click Port, LACP, Aggregation Port. Set the System Priority, Admin Key, and Port Priority for the Port Actor. You can optionally configure these settings for the Port Partner. (Be aware that these settings only affect the administrative state of the partner, and will not take effect until the next time an aggregate link is formed with this device.) After you have completed setting the port LACP parameters, click Apply.
  • Page 113 CLI – The following example configures LACP parameters for ports 1-6. Ports 1-4 are used as active members of the LAG; ports 5 and 6 are set to backup mode. Console(config)#interface ethernet 1/1 Console(config-if)#lacp actor system-priority 3 Console(config-if)#lacp actor admin-key 120 Console(config-if)#lacp actor port-priority 128 Console(config-if)#exit Console(config)#interface ethernet 1/6...

  • Page 114: Displaying Lacp Port Counters

    Configuring the Switch Displaying LACP Port Counters You can display statistics for LACP protocol messages. Field LACPDUs Sent LACPDUs Received Marker Sent Marker Received LACPDUs Unknown Pkts LACPDUs Illegal Pkts Web – Click Port, LACP, Port Counters Information. Select a member port to display the corresponding information.

  • Page 115: Displaying Lacp Settings And Status For The Local Side

    Displaying LACP Settings and Status for the Local Side You can display configuration settings and the operational state for the local side of an link aggregation. Table 3-7. LACP Internal Configuration Information Field Description Oper Key Current operational value of the key for the aggregation port. Admin Key Current administrative value of the key for the aggregation port.
  • Page 116 Configuring the Switch Web – Click Port, LACP, Port Internal Information. Select a port channel to display the corresponding information. Figure 3-45. LACP - Port Internal Information CLI – The following example displays the LACP configuration settings and operational state for the local side of port channel 1. Console#show lacp 1 internal Channel group : 1 -------------------------------------------------------------------------...

  • Page 117: Displaying Lacp Settings And Status For The Remote Side

    Displaying LACP Settings and Status for the Remote Side You can display configuration settings and the operational state for the remote side of an link aggregation. Table 3-8. LACP Neighbor Configuration Information Field Description Partner Admin System ID LAG partner’s system ID assigned by the user. Partner Oper System ID LAG partner’s system ID assigned by the LACP protocol.

  • Page 118: Setting Broadcast Storm Thresholds

    Configuring the Switch CLI – The following example displays the LACP configuration settings and operational state for the remote side of port channel 1. Console#show lacp 1 neighbors Channel group 1 neighbors ------------------------------------------------------------------------- Eth 1/1 ------------------------------------------------------------------------- Partner Admin System ID : 32768, 00-00-00-00-00-00 Partner Oper System ID : 32768, 00-00-00-00-00-01 Partner Admin Port Number : 1 Partner Oper Port Number : 1...
  • Page 119 Web – Click Port, Port/Trunk Broadcast Control. Check the Enabled box for any interface, set the threshold and click Apply. Figure 3-47. Port Broadcast Control CLI – Specify any interface, and then enter the threshold. The following disables broadcast storm control for port 1, and then sets broadcast suppression at 600 packets per second for port 2.

  • Page 120: Configuring Port Mirroring

    Configuring the Switch Configuring Port Mirroring You can mirror traffic from any source port to a target port for real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner.

  • Page 121: Configuring Rate Limits

    Configuring Rate Limits This function allows the network manager to control the maximum rate for traffic transmitted or received on an interface. Rate limiting is configured on interfaces at the edge of a network to limit traffic coming out of the switch. Traffic that falls within the rate limit is transmitted, while packets that exceed the acceptable amount of traffic are dropped.

  • Page 122: Showing Port Statistics

    Configuring the Switch Showing Port Statistics You can display standard statistics on network traffic from the Interfaces Group and Ethernet-like MIBs, as well as a detailed breakdown of traffic based on the RMON MIB. Interfaces and Ethernet-like statistics display errors on the traffic passing through each port.
  • Page 123 Parameter Transmit Discarded Packets Transmit Errors Etherlike Statistics Alignment Errors Late Collisions FCS Errors Excessive Collisions Single Collision Frames Internal MAC Transmit Errors Multiple Collision Frames Carrier Sense Errors SQE Test Errors Frames Too Long Deferred Transmissions Internal MAC Receive Errors RMON Statistics Drop Events Jabbers...
  • Page 124 Configuring the Switch Parameter Received Frames Broadcast Frames Multicast Frames CRC/Alignment Errors Undersize Frames Oversize Frames Fragments 64 Bytes Frames 65-127 Byte Frames 128-255 Byte Frames 256-511 Byte Frames 512-1023 Byte Frames 1024-1518 Byte Frames 1519-1536 Byte Frames 3-86 Table 3-9. Port Statistics Description The total number of frames (bad, broadcast and multicast) received.
  • Page 125 Port Configuration Web – Click Port, Port Statistics. Select the required interface, and click Query. You can also use the Refresh button at the bottom of the page to update the screen. Figure 3-50. Port Statistics 3-87...

  • Page 126: Address Table Settings

    Configuring the Switch CLI – This example shows statistics for port 13. Console#show interfaces counters ethernet 1/13 Ethernet 1/13 Iftable stats: Octets input: 868453, Octets output: 3492122 Unicast input: 7315, Unitcast output: 6658 Discard input: 0, Discard output: 0 Error input: 0, Error output: 0 Unknown protos input: 0, QLen output: 0 Extended iftable stats: Multi-cast input: 0, Multi-cast output: 17027...

  • Page 127: Displaying The Address Table

    Web – Click Address Table, Static Addresses. Specify the interface, the MAC address and VLAN, then click Add Static Address. Then set this as a permanent address or to be deleted on reset. Figure 3-51. Static Addresses CLI – This example adds an address to the static address table, but sets it to be deleted when the switch is reset.
  • Page 128 Configuring the Switch Web – Click Address Table, Dynamic Addresses. Specify the search type (i.e., mark the Interface, MAC Address, or VLAN checkbox), select the method of sorting the displayed addresses, and then click Query. Figure 3-52. Dynamic Addresses CLI – This example also displays the address table entries for port 1. Console#show mac-address-table interface ethernet 1/1 Interface Mac Address --------- ----------------- ---- -----------------...

  • Page 129: Changing The Aging Time

    Changing the Aging Time You can set the aging time for entries in the dynamic address table. Command Attributes • Aging Status – Enables or disables the aging time. • Aging Time – The time after which a learned entry is discarded. (Range: 10-1000000 seconds;...

  • Page 130: Displaying Global Settings

    Configuring the Switch Designated Root Once a stable network topology has been established, all bridges listen for Hello BPDUs (Bridge Protocol Data Units) transmitted from the Root Bridge. If a bridge does not get a Hello BPDU after a predefined interval (Maximum Age), the bridge assumes that the link to the Root Bridge is down.
  • Page 131 • Hello Time – Interval (in seconds) at which the root device transmits a configuration message. • Forward Delay – The maximum time (in seconds) the root device will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames.
  • Page 132 Configuring the Switch information that would make it return to a discarding state; otherwise, temporary data loops might result. • Root Hold Time – The interval (in seconds) during which no more than two bridge configuration protocol data units shall be transmitted by this node. •...

  • Page 133: Configuring Global Settings

    CLI – This command displays global STA settings, followed by settings for each port. Console#show spanning-tree Spanning-tree information --------------------------------------------------------------- Spanning tree mode Spanning tree enable/disable Instance Vlans configuration Priority Bridge Hello Time (sec.) Bridge Max Age (sec.) Bridge Forward Delay (sec.) Root Hello Time (sec.) Root Max Age (sec.) Root Forward Delay (sec.)
  • Page 134 Configuring the Switch • Multiple Spanning Tree Protocol - To allow multiple spanning trees to operate over the network, you must configure a related set of bridges with the same MSTP configuration, allowing them to participate in a specific set of spanning tree instances. - A spanning tree instance can exist only on bridges that have compatible VLAN instance assignments.
  • Page 135 • Forward Delay – The maximum time (in seconds) this device will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a discarding state;...
  • Page 136 Configuring the Switch Web – Click Spanning Tree, STA, Configuration. Modify the required attributes, and click Apply. Figure 3-55. STA Configuration 3-98...

  • Page 137: Displaying Interface Settings

    CLI – This example enables Spanning Tree Protocol, sets the mode to MST, and then configures the STA and MSTP parameters. Console(config)#spanning-tree Console(config)#spanning-tree mode mst Console(config)#spanning-tree priority 45056 Console(config)#spanning-tree hello-time 5 Console(config)#spanning-tree max-age 14 Console(config)#spanning-tree forward-time 20 Console(config)#spanning-tree pathcost method long Console(config)#spanning-tree transmission-limit 4 Console(config)#spanning-tree mst configuration Console(config-mstp)#revision 1...
  • Page 138 Configuring the Switch • Oper Link Type – The operational point-to-point status of the LAN segment attached to this interface. This parameter is determined by manual configuration or by auto-detection, as described for Admin Link Type in STA Port Configuration on page 3-102.
  • Page 139 • Priority – Defines the priority used for this port in the Spanning Tree Algorithm. If the path cost for all ports on a switch is the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the Spanning Tree. This makes a port with higher priority less likely to be blocked if the Spanning Tree Algorithm is detecting network loops.

  • Page 140: Configuring Interface Settings

    Configuring the Switch CLI – This example shows the STA attributes for port 5. Console#show spanning-tree ethernet 1/5 1/ 5 information -------------------------------------------------------------- Admin status : enable Role : disable State : discarding External path cost : 10000 Internal path cost : 10000 Priority : 128...
  • Page 141 Protocol is detecting network loops. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled. • Default: 128 • Range: 0-240, in steps of 16 • Path Cost – This parameter is used by the STP to determine the best path between devices.

  • Page 142: Configuring Multiple Spanning Trees

    Configuring the Switch Web – Click Spanning Tree, STA, Port Configuration or Trunk Configuration. Modify the required attributes, then click Apply. Figure 3-57. STA Port Configuration CLI – This example sets STA attributes for port 7. Console(config)#interface ethernet 1/7 Console(config-if)#no spanning-tree spanning-disabled Console(config-if)#spanning-tree port-priority 0 Console(config-if)#spanning-tree cost 50 Console(config-if)#spanning-tree link-type auto...
  • Page 143 To ensure that the MSTI maintains connectivity across the network, you must configure a related set of bridges with the same MSTI settings. Command Attributes • MST Instance – Instance identifier of this spanning tree. (Default: 0) • Priority – The priority of a spanning tree instance. (Range: 0-61440 in steps of 4096;...
  • Page 144 Configuring the Switch CLI – This displays STA settings for instance 1, followed by settings for each port. Console#show spanning-tree mst 1 Spanning-tree information --------------------------------------------------------------- Spanning tree mode Spanning tree enable/disable Instance Vlans configuration Priority Bridge Hello Time (sec.) Bridge Max Age (sec.) Bridge Forward Delay (sec.) Root Hello Time (sec.) Root Max Age (sec.)

  • Page 145: Displaying Interface Settings For Mstp

    Displaying Interface Settings for MSTP The MSTP Port Information and MSTP Trunk Information pages display the current status of ports and trunks in the selected MST instance. Field Attributes • MST Instance ID – Instance identifier to configure. (Range: 0-4094; Default: 0) The other attributes are described under “Displaying Interface Settings,”...

  • Page 146: Configuring Interface Settings For Mstp

    Configuring the Switch --------------------------------------------------------------- 1/ 1 information --------------------------------------------------------------- Admin status : enable Role : root State : forwarding External path cost : 100000 Internal path cost : 100000 Priority : 128 Designated cost : 200000 Designated port : 128.24 Designated root : 32768.0.0000ABCD0000 Designated bridge : 32768.0.0030F1552000...
  • Page 147 • MST Path Cost – This parameter is used by the MSTP to determine the best path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. (Path cost takes precedence over port priority.) Note that when the Path Cost Method is set to short (page 3-63), the maximum path cost is 65,535.

  • Page 148: Vlan Configuration

    Configuring the Switch VLAN Configuration IEEE 802.1Q VLANs In large networks, routers are used to isolate broadcast traffic for each subnet into separate domains. This switch provides a similar service at Layer 2 by using VLANs to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks.
  • Page 149 Note: VLAN-tagged frames can pass through VLAN-aware or VLAN-unaware network interconnection devices, but the VLAN tags should be stripped off before passing it on to any end-node host that does not support VLAN tagging. tagged frames VLAN Classification – When the switch receives a frame, it classifies the frame in one of two ways.
  • Page 150 Configuring the Switch these hosts, and core switches in the network, enable GVRP on the links between these devices. You should also determine security boundaries in the network and disable GVRP on the boundary ports to prevent advertisements from being propagated, or forbid those ports from joining restricted VLANs.

  • Page 151: Enabling Or Disabling Gvrp (Global Setting)

    Enabling or Disabling GVRP (Global Setting) GARP VLAN Registration Protocol (GVRP) defines a way for switches to exchange VLAN information in order to register VLAN members on ports across the network. VLANs are dynamically configured based on join messages issued by host devices and propagated throughout the network.

  • Page 152: Displaying Current Vlans

    Configuring the Switch CLI – Enter the following command. Console#show bridge-ext Max support vlan numbers: 255 Max support vlan ID: 4094 Extended multicast filtering services: No Static entry individual port: Yes VLAN learning: IVL Configurable PVID tagging: Yes Local VLAN capable: No Traffic classes: Enabled Global GVRP status: Enabled GMRP: Disabled...

  • Page 153: Creating Vlans

    Command Attributes (CLI) • VLAN – ID of configured VLAN (1-4094, no leading zeroes). • Type – Shows how this VLAN was added to the switch. - Dynamic: Automatically learned via GVRP. - Static: Added as a static entry. • Name – Name of the VLAN (1 to 32 characters). •...

  • Page 154: Adding Static Members To Vlans (Vlan Index)

    Configuring the Switch Web – Click VLAN, 802.1Q VLAN, Static List. To create a new VLAN, enter the VLAN ID and VLAN name, mark the Enable checkbox to activate the VLAN, and then click Add. Figure 3-64. VLAN Static List - Creating VLANs CLI –...
  • Page 155 Command Attributes • VLAN – ID of configured VLAN (1-4094, no leading zeroes). • Name – Name of the VLAN (1 to 32 characters). • Status – Enables or disables the specified VLAN. - Enable: VLAN is operational. - Disable: VLAN is suspended; i.e., does not pass packets. •...

  • Page 156: Adding Static Members To Vlans (Port Index)

    Configuring the Switch CLI – The following example adds tagged and untagged ports to VLAN 2. Console(config)#interface ethernet 1/1 Console(config-if)#switchport allowed vlan add 2 tagged Console(config-if)#exit Console(config)#interface ethernet 1/2 Console(config-if)#switchport allowed vlan add 2 untagged Console(config-if)#exit Console(config)#interface ethernet 1/13 Console(config-if)#switchport allowed vlan add 2 tagged Adding Static Members to VLANs (Port Index) Use the VLAN Static Membership by Port menu to assign VLAN groups to the selected interface as a tagged member.

  • Page 157: Configuring Vlan Behavior For Interfaces

    Configuring VLAN Behavior for Interfaces You can configure VLAN behavior for specific interfaces, including the default VLAN identifier (PVID), accepted frame types, ingress filtering, GVRP status, and GARP timers. Command Usage • GVRP – GARP VLAN Registration Protocol defines a way for switches to exchange VLAN information in order to automatically register VLAN members on interfaces across the network.
  • Page 158 Configuring the Switch or LeaveAll message has been issued, the applicants can rejoin before the port actually leaves the group. (Range: 60-3000 centiseconds; Default: 60) • GARP LeaveAll Timer* – The interval between sending out a LeaveAll query message for VLAN group participants and the port leaving the group. This interval should be considerably larger than the Leave Time to minimize the amount of traffic generated by nodes rejoining the group.

  • Page 159: Configuring Private Vlans

    CLI – This example sets port 3 to accept only tagged frames, assigns PVID 3 as the native VLAN ID, enables GVRP, sets the GARP timers, and then sets the switchport mode to hybrid. Console(config)#interface ethernet 1/3 Console(config-if)#switchport acceptable-frame-types tagged Console(config-if)#switchport ingress-filtering Console(config-if)#switchport native vlan 3 Console(config-if)#switchport gvrp...

  • Page 160: Configuring Uplink And Downlink Ports

    Configuring the Switch Configuring Uplink and Downlink Ports Use the Private VLAN Link Status page to set ports as downlink or uplink ports. Ports designated as downlink ports can not communicate with any other ports on the switch except for the uplink ports. Uplink ports can communicate with any other ports on the switch and with any designated downlink ports.

  • Page 161: Configuring Protocol Groups

    Configuring Protocol Groups Create a protocol group for one or more protocols. Command Attributes • Protocol Group ID – Group identifier of this protocol group. (Range: 1-2147483647) • Frame Type – Frame type used by this protocol. (Options: Ethernet, RFC_1042, LLC_other) •...
  • Page 162 Configuring the Switch - If the frame is untagged and the protocol type matches, the frame is forwarded to the appropriate VLAN. - If the frame is untagged but the protocol type does not match, the frame is forwarded to the default VLAN for this interface. Command Attributes •...

  • Page 163: Class Of Service Configuration

    Class of Service Configuration Class of Service (CoS) allows you to specify which data packets have greater precedence when traffic is buffered in the switch due to congestion. This switch supports CoS with eight priority queues for each port. Data packets in a port’s high-priority queue will be transmitted before those in the lower-priority queues.
  • Page 164 Configuring the Switch Web – Click Priority, Default Port Priority or Default Trunk Priority. Modify the default priority for any interface, then click Apply. Figure 3-72. Default Port Priority CLI – This example assigns a default priority of 5 to port 3. Console(config)#interface ethernet 1/3 Console(config-if)#switchport priority default 5 Console(config-if)#end...

  • Page 165: Mapping Cos Values To Egress Queues

    Mapping CoS Values to Egress Queues This switch processes Class of Service (CoS) priority tagged traffic by using eight priority queues for each port, with service schedules based on strict or Weighted Round Robin (WRR). Up to eight separate traffic priorities are defined in IEEE 802.1p.
  • Page 166 Configuring the Switch Web – Click Priority, Traffic Classes. Mark an interface and click Select to display the current mapping of CoS values to output queues. Assign priorities to the traffic classes (i.e., output queues) for the selected interface, then click Apply. CLI –...

  • Page 167: Selecting The Queue Mode

    Selecting the Queue Mode You can set the switch to service the queues based on a strict rule that requires all traffic in a higher priority queue to be processed before lower priority queues are serviced, or use Weighted Round-Robin (WRR) queuing that specifies a relative weight of each queue.

  • Page 168: Priority Queues

    Configuring the Switch Web – Click Priority, Queue Scheduling. Select the interface, highlight a traffic class (i.e., output queue), enter a weight, then click Apply. Figure 3-75. Queue Scheduling CLI – The following example shows how to assign WRR weights to each of the priority queues.

  • Page 169: Layer 3/4 Priority Settings

    Layer 3/4 Priority Settings Mapping Layer 3/4 Priorities to CoS Values This switch supports several common methods of prioritizing layer 3/4 traffic to meet application requirements. Traffic priorities can be specified in the IP header of a frame, using the priority bits in the Type of Service (ToS) octet or the number of the TCP port.

  • Page 170: Mapping Ip Precedence

    Configuring the Switch Mapping IP Precedence The Type of Service (ToS) octet in the IPv4 header includes three precedence bits defining eight different priority levels ranging from highest priority for network control packets to lowest priority for routine traffic. The default IP Precedence values are mapped one-to-one to Class of Service values (i.e., Precedence value 0 maps to CoS value 0, and so forth).

  • Page 171: Mapping Dscp Priority

    CLI – The following example globally enables IP Precedence service on the switch, maps IP Precedence value 1 to CoS value 0 (on port 1), and then displays the IP Precedence settings. Console(config)#map ip precedence Console(config)#interface ethernet 1/1 Console(config-if)#map ip precedence 1 cos 0 Console(config-if)#end Console#show map ip precedence ethernet 1/1 Precedence mapping status: disabled...
  • Page 172 Configuring the Switch Web – Click Priority, IP DSCP Priority. Select an entry from the DSCP table, enter a value in the Class of Service Value field, then click Apply. CLI – The following example globally enables DSCP Priority service on the switch, maps DSCP value 0 to CoS value 1 (on port 1), and then displays the DSCP Priority settings.

  • Page 173: Mapping Ip Port Priority

    Mapping IP Port Priority You can also map network applications to Class of Service values based on the IP port number (i.e., TCP/UDP port number) in the frame header. Some of the more common TCP service ports include: HTTP: 80, FTP: 21, Telnet: 23 and POP3: 110. Command Attributes •...

  • Page 174: Mapping Cos Values To Acls

    Configuring the Switch CLI – The following example globally enables IP Port Priority service on the switch, maps HTTP traffic on port 5 to CoS value 0, and then displays the IP Port Priority settings for that port. Console(config)#map ip port Console(config)#interface ethernet 1/5 Console(config-if)#map ip port 80 cos 0 Console(config-if)#end...

  • Page 175: Changing Priorities Based On Acl Rules

    Web – Click Priority, ACL CoS Priority. Enable mapping for any port, select an ACL from the scroll-down list, then click Apply. Figure 3-81. ACL CoS Priority CLI – This example assigns a CoS value of zero to packets matching rules within the specified ACL on port 24.
  • Page 176 Configuring the Switch Command Attributes • Port – Port identifier. • Name* – Name of ACL. • Type – Type of ACL (IP or MAC). • Precedence – IP Precedence value. (Range: 0-7) • DSCP – Differentiated Services Code Point value. (Range: 0-63) •...

  • Page 177: Multicast Filtering

    Multicast Filtering Multicasting is used to support real-time applications such as videoconferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its service to the network, and any hosts that want to receive the multicast register with their local multicast switch/ router.

  • Page 178: Configuring Igmp Snooping And Query Parameters

    Configuring the Switch Configuring IGMP Snooping and Query Parameters You can configure the switch to forward multicast traffic intelligently. Based on the IGMP query and report messages, the switch forwards traffic only to the ports that request multicast traffic. This prevents the switch from broadcasting the traffic to all ports and possibly disrupting network performance.

  • Page 179: Current Status

    Web – Click IGMP Snooping, IGMP Configuration. Adjust the IGMP settings as required, and then click Apply. (The default settings are shown below.) Figure 3-83. IGMP Configuration CLI – This example modifies the settings for multicast filtering, and then displays the current status.

  • Page 180: Displaying Interfaces Attached To A Multicast Router

    Configuring the Switch Displaying Interfaces Attached to a Multicast Router Multicast routers that are attached to ports on the switch use information obtained from IGMP, along with a multicast routing protocol such as DVMRP or PIM, to support IP multicasting across the Internet. These routers may be dynamically discovered by the switch or statically assigned to an interface on the switch.

  • Page 181: Specifying Static Interfaces For A Multicast Router

    Specifying Static Interfaces for a Multicast Router Depending on your network connections, IGMP snooping may not always be able to locate the IGMP querier. Therefore, if the IGMP querier is a known multicast router/ switch connected over the network to an interface (port or trunk) on your switch, you can manually configure the interface (and a specified VLAN) to join all the current multicast groups supported by the attached router.

  • Page 182: Displaying Port Members Of Multicast Services

    Configuring the Switch Displaying Port Members of Multicast Services You can display the port members associated with a specified VLAN and multicast service. Command Attribute • VLAN ID – Selects the VLAN for which to display port members. • Multicast IP Address – The IP address for a specific multicast service. •...

  • Page 183: Assigning Ports To Multicast Services

    Assigning Ports to Multicast Services Multicast filtering can be dynamically configured using IGMP Snooping and IGMP Query messages as described in “Configuring IGMP Snooping and Query Parameters” on page 3-140. For certain applications that require tighter control, you may need to statically configure a multicast service on the switch. First add all the ports attached to participating hosts to a common VLAN, and then assign the multicast service to that VLAN group.

  • Page 184: Configuring Domain Name Service

    Configuring the Switch Configuring Domain Name Service The Domain Naming System (DNS) service on this switch allows host names to be mapped to IP addresses using static table entries or by redirection to other name servers on the network. When a client device designates this switch as a DNS server, the client will attempt to resolve host names into IP addresses by forwarding DNS queries to the switch, and waiting for a response.
  • Page 185 Web – Select DNS, General Configuration. Set the default domain name or list of domain names, specify one or more name servers to use to use for address resolution, enable domain lookup status, and click Apply. Figure 3-88. DNS General Configuration CLI - This example sets a default domain name and a domain list.

  • Page 186: Configuring Static Dns Host To Address Entries

    Configuring the Switch Configuring Static DNS Host to Address Entries You can manually configure static entries in the DNS table that are used to map domain names to IP addresses. Command Usage • Static entries may be used for local devices connected directly to the attached network, or for commonly used resources located elsewhere on the network.
  • Page 187 Web – Select DNS, Static Host Table. Enter a host name and one or more corresponding addresses, then click Apply. Figure 3-89. DNS Static Host Table CLI - This example maps two address to a host name, and then configures an alias host name for the same addresses.

  • Page 188: Displaying The Dns Cache

    Configuring the Switch Displaying the DNS Cache You can display entries in the DNS cache that have been learned via the designated name servers. Field Attributes • No – The entry number for each resource record. • Flag – The flag is always “4” indicating a cache entry and therefore unreliable. •...
  • Page 189 CLI - This example displays all the resource records learned from the designated name servers. Console#show dns cache FLAG TYPE CNAME CNAME CNAME CNAME CNAME ALIAS CNAME ALIAS CNAME ALIAS CNAME Console# Configuring Domain Name Service 207.46.134.222 207.46.134.190 207.46.134.155 207.46.249.222 207.46.249.27 POINTER TO:4 207.46.68.27...
  • Page 190 Configuring the Switch 3-152...

  • Page 191: Chapter 4: Command Line Interface

    Chapter 4: Command Line Interface This chapter describes how to use the Command Line Interface (CLI). Using the Command Line Interface Accessing the CLI When accessing the management interface for the switch over a direct connection to the server’s console port, or via a Telnet connection, the switch can be managed by entering command keywords and parameters at the prompt.
  • Page 192 Command Line Interface To access the switch through a Telnet session, you must first set the IP address for the switch, and set the default gateway if you are managing the switch from a different IP subnet. For example, Console(config)#interface vlan 1 Console(config-if)#ip address 10.1.0.254 255.255.255.0 Console(config-if)#exit Console(config)#ip default-gateway 10.1.0.254...

  • Page 193: Entering Commands

    Entering Commands This section describes how to enter CLI commands. Keywords and Arguments A CLI command is a series of keywords and arguments. Keywords identify a command, and arguments specify configuration parameters. For example, in the command “show interfaces status ethernet 1/5,” show interfaces and status are keywords, ethernet is an argument that specifies the interface type, and 1/5 specifies the unit/port.

  • Page 194: Showing Commands

    Command Line Interface Showing Commands If you enter a “?” at the command prompt, the system will display the first level of keywords for the current command class (Normal Exec or Privileged Exec) or configuration class (Global, ACL, Interface, Line, VLAN Database, or MSTP). You can also display a list of valid keywords for a specific command.

  • Page 195: Partial Keyword Lookup

    Partial Keyword Lookup If you terminate a partial keyword with a question mark, alternatives that match the initial letters are provided. (Remember not to leave a space between the command and question mark.) For example “s?” shows all the keywords starting with “s.” Console#show s? snmp sntp...

  • Page 196: Understanding Command Modes

    Command Line Interface Understanding Command Modes The command set is divided into Exec and Configuration classes. Exec commands generally display information on system status or clear statistical counters. Configuration commands, on the other hand, modify interface parameters or enable certain switching functions. These classes are further divided into different modes. Available commands depend on the selected mode.

  • Page 197: Configuration Commands

    Username: guest Password: [guest login password] CLI session with the 44 10/100/1000 ports 4 Gigabit Combo ports L2/L4 managed standalone switch is opened. To end the CLI session, enter [Exit]. Console#enable Password: [privileged level password] Console# Configuration Commands Configuration commands are privileged level commands used to modify switch settings.
  • Page 198 Command Line Interface To enter the other modes, at the configuration prompt type one of the following commands. Use the exit or end command to return to the Privileged Exec mode. Table 4-2. Configuration Command Modes Mode Command Line line {console | vty} Access access-list ip standard Control List...

  • Page 199: Command Line Processing

    Command Line Processing Commands are not case sensitive. You can abbreviate commands and parameters as long as they contain enough letters to differentiate them from any other currently available commands or parameters. You can use the Tab key to complete partial commands, or enter a partial command followed by the “?”...

  • Page 200: Command Groups

    Command Line Interface Command Groups The system commands can be broken down into the functional groups shown below Command Group Description Line Sets communication parameters for the serial port and Telnet, including baud rate and console time-out General Basic commands for entering privileged access mode, restarting the system, or quitting the CLI System Management Controls system logs, system passwords, user name, browser...

  • Page 201: Line Commands

    The access mode shown in the following tables is indicated by these abbreviations: NE (Normal Exec) PE (Privileged Exec) GC (Global Configuration) ACL (Access Control List Configuration) Line Commands You can access the onboard configuration program by attaching a VT100 compatible device to the server’s serial port.

  • Page 202: Line

    Command Line Interface line This command identifies a specific line for configuration, and to process subsequent line configuration commands. Syntax line {console | vty} • console - Console terminal line. • vty - Virtual terminal for remote console access (i.e., Telnet). Default Setting There is no default line.

  • Page 203: Password

    Command Usage • There are three authentication modes provided by the switch itself at login: - login selects authentication by a single global password as specified by the password line configuration command. When using this method, the management interface starts in Normal Exec (NE) mode. - login local selects authentication via the user name and password specified by the username command (i.e., default setting).

  • Page 204: Exec-Timeout

    Command Line Interface number of times a user can enter an incorrect password before the system terminates the line connection and returns the terminal to the idle state. • The encrypted password is required for compatibility with legacy password settings (i.e., plain text or encrypted) when reading the configuration file during system bootup or when downloading the configuration file from a TFTP server.

  • Page 205: Password-Thresh

    password-thresh This command sets the password intrusion threshold which limits the number of failed logon attempts. Use the no form to remove the threshold value. Syntax password-thresh [threshold] no password-thresh threshold - The number of allowed password attempts. (Range: 1-120; 0: no threshold) Default Setting The default value is three attempts.

  • Page 206: Databits

    Command Line Interface Example To set the silent time to 60 seconds, enter this command: Console(config-line)#silent-time 60 Console(config-line)# Related Commands password-thresh (4-15) databits This command sets the number of data bits per character that are interpreted and generated by the console port. Use the no form to restore the default value. Syntax databits {7 | 8} no databits...

  • Page 207: Parity

    parity This command defines the generation of a parity bit. Use the no form to restore the default setting. Syntax parity {none | even | odd} no parity • none - No parity • even - Even parity • odd - Odd parity Default Setting No parity Command Mode...

  • Page 208: Stopbits

    Command Line Interface Command Usage Set the speed to match the baud rate of the device connected to the serial port. Some baud rates available on devices connected to the port might not be supported. The system indicates if the speed you selected is not supported. If you select the “auto”...

  • Page 209: Show Line

    Command Usage Specifying session identifier “0” will disconnect the console connection. Specifying any other identifiers for an active session will disconnect an SSH or Telnet connection. Example Console#disconnect 1 Console# Related Commands show ssh (4-41) show users (4-61) show line This command displays the terminal line’s parameters.

  • Page 210: General Commands

    Command Line Interface General Commands Command Function enable Activates privileged mode disable Returns to normal mode from privileged mode configure Activates global configuration mode show history Shows the command history buffer reload Restarts the system Returns to Privileged Exec mode exit Returns to the previous configuration mode, or exits the CLI quit...

  • Page 211: Disable

    Example Console>enable Password: [privileged level password] Console# Related Commands disable (4-21) enable password (4-27) disable This command returns to Normal Exec mode from privileged mode. In normal access mode, you can only display basic information on the switch's configuration or Ethernet statistics.

  • Page 212: Show History

    Command Line Interface Related Commands end (4-23) show history This command shows the contents of the command history buffer. Default Setting None Command Mode Normal Exec, Privileged Exec Command Usage The history buffer size is fixed at 10 Execution commands and 10 Configuration commands.

  • Page 213: End

    Command Mode Privileged Exec Command Usage This command resets the entire system. Example This example shows how to reset the switch: Console#reload System will be restarted, continue <y/n>? y This command returns to Privileged Exec mode. Default Setting None Command Mode Global Configuration, Interface Configuration, Line Configuration, VLAN Database Configuration, and Multiple Spanning Tree Configuration.

  • Page 214: Quit

    Command Line Interface quit This command exits the configuration program. Default Setting None Command Mode Normal Exec, Privileged Exec Command Usage The quit and exit commands can both exit the configuration program. Example This example shows how to quit a CLI session: Console#quit Press ENTER to start session User Access Verification...

  • Page 215: Device Designation Commands

    Device Designation Commands Table 4-8. Device Designation Commands Command Function prompt Customizes the prompt used in PE and NE mode hostname Specifies the host name for the switch snmp-server contact Sets the system contact string snmp-server location Sets the system location string prompt This command customizes the CLI prompt.

  • Page 216: User Access Commands

    Command Line Interface Example Console(config)#hostname RD#1 Console(config)# User Access Commands The basic commands required for management access are listed in this section. This switch also includes other options for password checking via the console or a Telnet connection (page 4-11), user authentication via a remote authentication server (page 4-68), and host access authentication for specific ports (page 4-78).

  • Page 217: Enable Password

    Command Mode Global Configuration Command Usage The encrypted password is required for compatibility with legacy password settings (i.e., plain text or encrypted) when reading the configuration file during system bootup or when downloading the configuration file from a TFTP server. There is no need for you to manually configure encrypted passwords.

  • Page 218: Ip Filter Commands

    Command Line Interface Example Console(config)#enable password level 15 0 admin Console(config)# Related Commands enable (4-20) IP Filter Commands Command Function management Configures IP addresses that are allowed management access GC show management Displays the switch to be monitored or configured from a browser management This command specifies the client IP addresses that are allowed management...

  • Page 219: Show Management

    • When entering addresses for the same group (i.e., SNMP, Web or Telnet), the switch will not accept overlapping address ranges. When entering addresses for different groups, the switch will accept overlapping address ranges. • You cannot delete an individual address from a specified range. You must delete the entire range, and reenter the addresses.

  • Page 220: Web Server Commands

    Command Line Interface Web Server Commands Command Function ip http port Specifies the port to be used by the Web browser interface ip http server Allows the switch to be monitored or configured from a browser GC ip http secure-server Enables HTTPS/SSL for encrypted communications ip http secure-port Specifies the UDP port number for HTTPS/SSL...

  • Page 221: Ip Http Secure-Server

    Example Console(config)#ip http server Console(config)# Related Commands ip http port (4-30) ip http secure-server This command enables the secure hypertext transfer protocol (HTTPS) over the Secure Socket Layer (SSL), providing secure access (i.e., an encrypted connection) to the switch’s Web interface. Use the no form to disable this function. Syntax [no] ip http secure-server Default Setting...

  • Page 222: Ip Http Secure-Port

    Command Line Interface Example Console(config)#ip http secure-server Console(config)# Related Commands ip http secure-port (4-32) copy tftp https-certificate (4-63) ip http secure-port This command specifies the UDP port number used for HTTPS/SSL connection to the switch’s Web interface. Use the no form to restore the default port. Syntax ip http secure-port port_number no ip http secure-port...

  • Page 223: Telnet Server Commands

    Telnet Server Commands Command Function ip telnet port Specifies the port to be used by the Telnet interface ip telnet server Allows the switch to be monitored or configured from Telnet ip telnet port This command specifies the TCP port number used by the Telnet interface. Use the no form to use the default port.

  • Page 224: Secure Shell Commands

    Command Line Interface Related Commands ip telnet port (4-33) Secure Shell Commands The Berkley-standard includes remote access tools originally designed for Unix systems. Some of these tools have also been implemented for Microsoft Windows and other environments. These tools, including commands such as rlogin (remote login), rsh (remote shell), and rcp (remote copy), are not secure from hostile attacks.
  • Page 225 The SSH server on this switch supports both password and public key authentication. If password authentication is specified by the SSH client, then the password can be authenticated either locally or via a RADIUS or TACACS+ remote authentication server, as specified by the authentication login command on page 4-69.

  • Page 226: Ip Ssh Server

    Command Line Interface corresponding to the public keys stored on the switch can gain access. The following exchanges take place during this process: The client sends its public key to the switch. The switch compares the client's public key to those stored in memory. If a match is found, the switch uses the public key to encrypt a random sequence of bytes, and sends this string to the client.

  • Page 227: Ip Ssh Timeout

    ip ssh timeout Use this command to configure the timeout for the SSH server. Use the no form to restore the default setting. Syntax ip ssh timeout seconds no ip ssh timeout seconds – The timeout for client response during SSH negotiation. (Range: 1-120) Default Setting 10 seconds...

  • Page 228: Ip Ssh Server-Key Size

    Command Line Interface Example Console(config)#ip ssh authentication-retires 2 Console(config)# Related Commands show ip ssh (4-40) ip ssh server-key size Use this command to set the SSH server key size. Use the no form to restore the default setting. Syntax ip ssh server-key size key-size no ip ssh server-key size key-size –...

  • Page 229: Ip Ssh Crypto Host-Key Generate

    Example Console#delete public-key admin dsa Console# ip ssh crypto host-key generate Use this command to generate the host key pair (i.e., public and private). Syntax ip ssh crypto host-key generate [dsa | rsa] • dsa – DSA (Version 2) key type. •...

  • Page 230: Ip Ssh Save Host-Key

    Command Line Interface Command Mode Privileged Exec Command Usage • This command clears the host key from volatile memory (RAM). Use the no ip ssh save host-key command to clear the host key from flash memory. • The SSH server must be disabled before you can execute this command. Example Console#ip ssh crypto zeroize dsa Console#...

  • Page 231: Show Ssh

    Example Console#show ip ssh SSH Enabled - version 1.99 Negotiation timeout: 120 secs; Authentication retries: 3 Server key size: 768 bits Console# show ssh Use this command to display the current SSH server connections. Command Mode Privileged Exec Example Console#show ssh Connection Version State Session-Started Console#...

  • Page 232: Show Public-Key

    Command Line Interface show public-key Use this command to show the public key for the specified user or for the host. Syntax show public-key [user [username]| host] username – Name of an SSH user. (Range: 1-8 characters) Default Setting Shows all public keys. Command Mode Privileged Exec Command Usage...

  • Page 233: Event Logging Commands

    Event Logging Commands Table 4-16. Event Logging Commands Command Function logging on Controls logging of error messages logging history Limits syslog messages saved to switch memory based on severity logging host Adds a syslog server host IP address that will receive logging messages logging facility Sets the facility type for remote logging of syslog messages...

  • Page 234: Logging History

    Command Line Interface logging history This command limits syslog messages saved to switch memory based on severity. The no form returns the logging of syslog messages to the default level. Syntax logging history {flash | ram} level no logging history {flash | ram} •...

  • Page 235: Logging Host

    logging host This command adds a syslog server host IP address that will receive logging messages. Use the no form to remove a syslog server host. Syntax [no] logging host host_ip_address host_ip_address - The IP address of a syslog server. Default Setting None Command Mode...

  • Page 236: Logging Trap

    Command Line Interface logging trap This command enables the logging of system messages to a remote server, or limits the syslog messages saved to a remote server based on severity. Use this command without a specified level to enable remote logging. Use the no form to disable remote logging.

  • Page 237: Show Logging

    Related Commands show logging (4-47) show logging This command displays the logging configuration, along with any system and event messages stored in memory. Syntax show logging {flash | ram | sendmail | trap} • flash - Event history stored in flash memory (i.e., permanent memory). •...

  • Page 238: Smtp Alert Commands

    Command Line Interface The following example displays settings for the trap function. Console#show logging trap Syslog logging: Enable REMOTELOG status: disable REMOTELOG facility type: local use 7 REMOTELOG level type: Debugging messages REMOTELOG server IP address: 1.2.3.4 REMOTELOG server IP address: 0.0.0.0 REMOTELOG server IP address: 0.0.0.0 REMOTELOG server IP address: 0.0.0.0 REMOTELOG server IP address: 0.0.0.0...

  • Page 239: Logging Sendmail Host

    logging sendmail host This command specifies SMTP servers that will be sent alert messages. Use the no form to remove an SMTP server. Syntax [no] logging sendmail host ip_address ip_address - IP address of an SMTP server that will be sent alert messages for event handling.

  • Page 240: Logging Sendmail Source-Email

    Command Line Interface Command Usage The specified level indicates an event threshold. All events at this level or higher will be sent to the configured email recipients. (For example, using Level 7 will report all events from level 7 to level 0.) Example This example will send email alerts for system errors from level 3 through 0.

  • Page 241: Logging Sendmail

    Command Usage You can specify up to five recipients for alert messages. However, you must enter a separate command to specify each recipient. Example Console(config)#logging sendmail destination-email ted@this-company.com Console(config)# logging sendmail This command enables SMTP event handling. Use the no form to disable this function.

  • Page 242: Time Commands

    Command Line Interface Time Commands The system clock can be dynamically set by polling a set of specified time servers (NTP or SNTP), or by using information broadcast by local time servers. Command Function sntp client Accepts time from specified time servers sntp server Specifies one or more time servers sntp poll...

  • Page 243: Sntp Server

    Example Console(config)#sntp server 10.1.0.19 Console(config)#sntp poll 60 Console(config)#sntp client Console(config)#end Console#show sntp Current time: Jul 10 02:52:44 2003 Poll interval: 60 Current mode: unicast SNTP status : Enabled SNTP server 137.92.140.80 0.0.0.0 0.0.0.0 Current server: 137.92.140.80 Console# Related Commands sntp server (4-53) sntp poll (4-54) show sntp (4-54) sntp server...

  • Page 244: Sntp Poll

    Command Line Interface sntp poll This command sets the interval between sending time requests when the switch is set to SNTP client mode. Use the no form to restore to the default. Syntax sntp poll seconds no sntp poll seconds - Interval between time requests. (Range: 16-16384 seconds) Default Setting 16 seconds Command Mode...

  • Page 245: Clock Timezone

    clock timezone This command sets the time zone for the switch’s internal clock. Syntax clock timezone name hour hours minute minutes {before-utc | after-utc} • name - Name of timezone, usually an acronym. (Range: 1-29 characters) • hours - Number of hours before/after UTC. (Range: 0-12 hours) •...

  • Page 246: Show Calendar

    Command Line Interface Default Setting None Command Mode Privileged Exec Example This example shows how to set the system clock to 15:12:34, February 1st, 2004. Console#calendar set 15 12 34 1 February 2004 Console# show calendar This command displays the system clock. Default Setting None Command Mode...

  • Page 247: System Status Commands

    System Status Commands Table 4-22. System Status Commands Command Function show startup-config Displays the contents of the configuration file (stored in flash memory) that is used to start up the system show running-config Displays the configuration data currently in use show system Displays system information show users...

  • Page 248: Show Running-Config

    Command Line Interface Example Console#show startup-config building startup-config, please wait... username admin access-level 15 username admin password 0 admin username guest access-level 0 username guest password 0 guest enable password level 15 0 super snmp-server community public ro snmp-server community private rw vlan database vlan 1 name DefaultVlan media ethernet state active interface vlan 1...
  • Page 249 - VLAN configuration settings for each interface - Multiple spanning tree instances (name and interfaces) - IP address configured for VLANs - Spanning tree settings - Any configured settings for the console port and Telnet Example Console#show running-config building running-config, please wait... phymap 00-00-a3-42-00-80 sntp server 0.0.0.0 0.0.0.0 0.0.0.0 snmp-server community private rw...

  • Page 250: Show System

    Command Line Interface Related Commands show startup-config (4-57) show system This command displays system information. Default Setting None Command Mode Normal Exec, Privileged Exec Command Usage • For a description of the items shown by this command, refer to “Displaying System Information”...

  • Page 251: Show Users

    show users Shows all active console and Telnet sessions, including user name, idle time, and IP address of Telnet client. Default Setting None Command Mode Normal Exec, Privileged Exec Command Usage The session used to execute this command is indicated by a “*” symbol next to the Line (i.e., session) index number.

  • Page 252: Frame Size Commands

    Command Line Interface Example Console#show version Unit1 Serial number Hardware version Number of ports Main power status Redundant power status :not present Agent(master) Unit id Loader version Boot rom version Operation code version :1.4.0.0 Console# Frame Size Commands Command Function jumbo frame Enables support for jumbo frames jumbo frame...

  • Page 253: Flash/File Commands

    Example Console(config)#jumbo frame Console(config)# Flash/File Commands These commands are used to manage the system code or configuration files. Command Function copy Copies a code image or a switch configuration to or from flash memory or a TFTP server delete Deletes a file or code image Displays a list of files in flash memory whichboot Displays the files booted...
  • Page 254 Command Line Interface Command Mode Privileged Exec Command Usage • The system prompts for data required to complete the copy command. • The destination file name should not contain slashes (\ or /), the leading letter of the file name should not be a period (.), and the maximum length for file names on the TFTP server is 127 characters or 31 characters for files on the switch.

  • Page 255: Delete

    The following example shows how to download a configuration file: Console#copy tftp startup-config TFTP server ip address: 10.1.0.99 Source configuration file name: startup.01 Startup configuration file name [startup]: Write to FLASH Programming. \Write to FLASH finish. Success. Console# This example shows how to copy a secure-site certificate from an TFTP server. It then reboots the switch to activate the certificate: Console#copy tftp https-certificate TFTP server ip address: 10.1.0.19...

  • Page 256: Dir

    Command Line Interface Command Usage • If the file type is used for system startup, then this file cannot be deleted. • “Factory_Default_Config.cfg” cannot be deleted. Example This example shows how to delete the test2.cfg configuration file from flash memory. Console#delete test2.cfg Console# Related Commands...

  • Page 257: Whichboot

    Example The following example shows how to display all file information: Console#dir -------------------------------- -------------- ------- ----------- Unit1: Factory_Default_Config.cfg ------------------------------------------------------------------- Console# whichboot This command displays which files were booted when the system powered up. Default Setting None Command Mode Privileged Exec Example This example shows the information displayed by the whichboot command.

  • Page 258: Authentication Commands

    Command Line Interface Default Setting None Command Mode Global Configuration Command Usage • A colon (:) is required after the specified file type. • If the file contains an error, it cannot be set as the default file. Example Console(config)#boot system config: startup Console(config)# Related Commands dir (4-66)

  • Page 259: Authentication Sequence

    Authentication Sequence Table 4-27. Authentication Sequence Commands Command Function authentication login Defines logon authentication method and precedence authentication enable Defines the authentication method and precedence for command mode change authentication login This command defines the login authentication method and precedence. Use the no form to restore the default.

  • Page 260: Authentication Enable

    Command Line Interface authentication enable This command defines the authentication method and precedence to use when changing from Exec command mode to Privileged Exec command mode with the enable command (see page 4-20). Use the no form to restore the default. Syntax authentication enable {[local] [radius] [tacacs]} no authentication enable...

  • Page 261: Radius Client

    RADIUS Client Remote Authentication Dial-in User Service (RADIUS) is a logon authentication protocol that uses software running on a central server to control access to RADIUS-aware devices on the network. An authentication server contains a database of multiple user name/password pairs with associated privilege levels for each user or group that require management access to a switch.

  • Page 262: Radius-Server Key

    Command Line Interface Default Setting 1812 Command Mode Global Configuration Example Console(config)#radius-server port 181 Console(config)# radius-server key This command sets the RADIUS encryption key. Use the no form to restore the default. Syntax radius-server key key_string no radius-server key key_string - Encryption key used to authenticate logon access for client. Do not use blank spaces in the string.

  • Page 263: Radius-Server Timeout

    Example Console(config)#radius-server retransmit 5 Console(config)# radius-server timeout This command sets the interval between transmitting authentication requests to the RADIUS server. Use the no form to restore the default. Syntax radius-server timeout number_of_seconds no radius-server timeout number_of_seconds - Number of seconds the switch waits for a reply before resending a request.

  • Page 264: Tacacs+ Client

    Command Line Interface TACACS+ Client Terminal Access Controller Access Control System (TACACS+) is a logon authentication protocol that uses software running on a central server to control access to TACACS-aware devices on the network. An authentication server contains a database of multiple user name/password pairs with associated privilege levels for each user or group that require management access to a switch.

  • Page 265: Tacacs-Server Key

    Command Mode Global Configuration Example Console(config)#tacacs-server port 181 Console(config)# tacacs-server key This command sets the TACACS+ encryption key. Use the no form to restore the default. Syntax tacacs-server key key_string no tacacs-server key key_string - Encryption key used to authenticate logon access for the client.

  • Page 266: Port Security Commands

    Command Line Interface Port Security Commands These commands can be used to enable port security on a port. When using port security, the switch stops learning new MAC addresses on the specified port when it has reached a configured maximum number. Only incoming traffic with source addresses already stored in the dynamic or static address table for this port will be authorized to access the network.
  • Page 267 Command Usage • If you enable port security, the switch stops learning new MAC addresses on the specified port when it has reached a configured maximum number. Only incoming traffic with source addresses already stored in the dynamic or static address table will be accepted.

  • Page 268: 802.1X Port Authentication

    Command Line Interface 802.1x Port Authentication The switch supports IEEE 802.1x (dot1x) port-based access control that prevents unauthorized access to the network by requiring users to first submit credentials for authentication. Client authentication is controlled centrally by a RADIUS server using EAP (Extensible Authentication Protocol).

  • Page 269: Dot1X Default

    dot1x default This command sets all configurable dot1x global and port settings to their default values. Syntax dot1x default Command Mode Global Configuration Example Console(config)#dot1x default Console(config)# dot1x max-req This command sets the maximum number of times the switch port will retransmit an EAP request/identity packet to the client before it times out the authentication session.

  • Page 270: Dot1X Port-Control

    Command Line Interface dot1x port-control This command sets the dot1x mode on a port interface. Use the no form to restore the default. Syntax dot1x port-control {auto | force-authorized | force-unauthorized} no dot1x port-control • auto – Requires a dot1x-aware connected client to be authorized by the RADIUS server.

  • Page 271: Dot1X Re-Authenticate

    Command Usage • The “max-count” parameter specified by this command is only effective if the dot1x mode is set to “auto” by the dot1x port-control command (page 4-105). • In “multi-host” mode, only one host connected to a port needs to pass authentication for all other hosts to be granted network access.

  • Page 272: Dot1X Timeout Quiet-Period

    Command Line Interface dot1x timeout quiet-period This command sets the time that a switch port waits after the Max Request Count has been exceeded before attempting to acquire a new client. Use the no form to reset the default. Syntax dot1x timeout quiet-period seconds no dot1x timeout quiet-period seconds - The number of seconds.

  • Page 273: Dot1X Timeout Tx-Period

    dot1x timeout tx-period This command sets the time that the switch waits during an authentication session before re-transmitting an EAP packet. Use the no form to reset to the default value. Syntax dot1x timeout tx-period seconds no dot1x timeout tx-period seconds - The number of seconds.
  • Page 274 Command Line Interface (page 4-79). It also displays the following global parameters which are set to a fixed value, including the following items: - supp-timeout - server-timeout - reauth-max • 802.1X Port Summary – Displays the port access control parameters for each interface, including the following items: - Status - Operation Mode...
  • Page 275 Example Console#show dot1x Global 802.1X Parameters reauth-enabled: yes reauth-period: 3600 quiet-period: tx-period: supp-timeout: server-timeout: 30 reauth-max: max-req: 802.1X Port Summary Port Name Status disabled disabled 1/47 disabled 1/48 enabled 802.1X Port Details 802.1X is disabled on port 1/1 802.1X is disabled on port 1/2 802.1X is disabled on port 802.1X is enabled on port Status...

  • Page 276: Access Control List Commands

    Command Line Interface Access Control List Commands Access Control Lists (ACL) provide packet filtering for IP frames (based on address, protocol, Layer 4 protocol port number or TCP control code) or any frames (based on MAC address or Ethernet type). To filter packets, first create an access list, add the required rules, specify a mask to modify the precedence in which the rules are checked, and then bind the list to a specific port.

  • Page 277: Ip Acls

    3. User-defined rules in the Ingress MAC ACL for ingress ports. 4. User-defined rules in the Ingress IP ACL for ingress ports. 5. Explicit default rule (permit any any) in the ingress IP ACL for ingress ports. 6. Explicit default rule (permit any any) in the ingress MAC ACL for ingress ports. 7.

  • Page 278: Access-List Ip

    Command Line Interface Command Function match access-list ip Changes the 802.1p priority, IP Precedence, or DSCP Priority of a frame matching the defined rule (i.e., also called packet marking) show marking Displays the current configuration for packet marking access-list ip This command adds an IP access list and enters configuration mode for standard or extended IP ACLs.

  • Page 279: Permit, Deny (Standard Acl)

    permit, deny (Standard ACL) This command adds a rule to a Standard IP ACL. The rule sets a filter condition for packets emanating from the specified source. Use the no form to remove a rule. Syntax [no] {permit | deny} {any | source bitmask | host source} •...

  • Page 280: Permit, Deny (Extended Acl)

    Command Line Interface permit, deny (Extended ACL) This command adds a rule to an Extended IP ACL. The rule sets a filter condition for packets with specific source or destination IP addresses, protocol types, source or destination protocol ports, or TCP control codes. Use the no form to remove a rule. Syntax [no] {permit | deny} [protocol-number | udp] {any | source address-bitmask | host source}...
  • Page 281 Command Usage • All new rules are appended to the end of the list. • Address bitmasks are similar to a subnet mask, containing four integers from 0 to 255, each separated by a period. The binary mask uses 1 bits to indicate “match”...

  • Page 282: Show Ip Access-List

    Command Line Interface Related Commands access-list ip (4-88) show ip access-list This command displays the rules for configured IP ACLs. Syntax show ip access-list {standard | extended} [acl_name] • standard – Specifies a standard IP ACL. • extended – Specifies an extended IP ACL. •...

  • Page 283: Mask (Ip Acl)

    Command Usage • A mask can only be used by all ingress ACLs or all egress ACLs. • The precedence of the ACL rules applied to a packet is not determined by order of the rules, but instead by the order of the masks; i.e., the first mask that matches a rule will determine the rule that is applied to a packet.

  • Page 284: Command Mode

    Command Line Interface Command Mode IP Mask Command Usage • Packets crossing a port are checked against all the rules in the ACL until a match is found. The order in which these packets are checked is determined by the mask, and not the order in which the ACL rules were entered. •...
  • Page 285 This shows how to create a standard ACL with an ingress mask to deny access to the IP host 171.69.198.102, and permit access to any others. Console(config)#access-list ip standard A2 Console(config-std-acl)#permit any Console(config-std-acl)#deny host 171.69.198.102 Console(config-std-acl)#end Console#show access-list IP standard access-list A2: deny host 171.69.198.102 permit any Console#configure...

  • Page 286: Show Access-List Ip Mask-Precedence

    Command Line Interface This is a more comprehensive example. It denies any TCP packets in which the SYN bit is ON, and permits all other packets. It then sets the ingress mask to check the deny rule first, and finally binds port 1 to this ACL. Note that once the ACL is bound to an interface (i.e., the ACL is active), the order in which the rules are displayed is determined by the associated mask.

  • Page 287: Ip Access-Group

    Related Commands mask (IP ACL) (4-93) ip access-group This command binds a port to an IP ACL. Use the no form to remove the port. Syntax [no] ip access-group acl_name {in | out} • acl_name – Name of the ACL. (Maximum length: 16 characters) •...

  • Page 288: Map Access-List Ip

    Command Line Interface Related Commands ip access-group (4-97) map access-list ip This command sets the output queue for packets matching an ACL rule. The specified CoS value is only used to map the matching packet to an output queue; it is not written to the packet itself.

  • Page 289: Show Map Access-List Ip

    show map access-list ip This command shows the CoS value mapped to an IP ACL for the current interface. (The CoS value determines the output queue for packets matching an ACL rule.) Syntax show map access-list ip [interface] interface • ethernet unit/port - unit - This is device 1.

  • Page 290: Show Marking

    Command Line Interface Command Usage • You must configure an ACL mask before you can change frame priorities based on an ACL rule. • Traffic priorities may be included in the IEEE 802.1p priority tag. This tag is also incorporated as part of the overall IEEE 802.1Q VLAN tag. To specify this priority, use the set priority keywords.

  • Page 291: Mac Acls

    MAC ACLs Command Function access-list mac Creates a MAC ACL and enters configuration mode permit, deny Filters packets matching a specified source and destination address, packet format, and Ethernet type show mac access-list Displays the rules for configured MAC ACLs access-list mac Changes to the mode for configuring access control masks GC mask-precedence...

  • Page 292: Permit, Deny (Mac Acl)

    Command Line Interface Example Console(config)#access-list mac jerry Console(config-mac-acl)# Related Commands permit, deny 4-102 mac access-group (4-107) show mac access-list (4-103) permit, deny (MAC ACL) This command adds a rule to a MAC ACL. The rule filters packets matching a specified MAC source or destination address (i.e., physical layer address), or Ethernet protocol type.

  • Page 293: Show Mac Access-List

    • destination – Destination MAC address range with bitmask. • address-bitmask* – Bitmask for MAC address (in hexidecimal format). • vid – VLAN ID. (Range: 1-4095) • vid-bitmask* – VLAN bitmask. (Range: 1-4095) • protocol – A specific Ethernet protocol number. (Range: 600-fff hex.) •...

  • Page 294: Access-List Mac Mask-Precedence

    Command Line Interface Example Console#show mac access-list MAC access-list jerry: permit any 00-e0-29-94-34-de ethertype 0800 Console# Related Commands permit, deny 4-102 mac access-group (4-107) access-list mac mask-precedence This command changes to MAC Mask mode used to configure access control masks. Use the no form to delete the mask table. Syntax [no] access-list ip mask-precedence {in | out} •...

  • Page 295: Mask (Mac Acl)

    mask (MAC ACL) This command defines a mask for MAC ACLs. This mask defines the fields to check in the packet header. Use the no form to remove a mask. Syntax [no] mask [pktformat] {any | host | source-bitmask} {any | host | destination-bitmask} [vid [vid-bitmask]] [ethertype [ethertype-bitmask]] •...
  • Page 296 Command Line Interface Example This example shows how to create an Ingress MAC ACL and bind it to a port. You can then see that the order of the rules have been changed by the mask. Console(config)#access-list mac M4 Console(config-mac-acl)#permit any any Console(config-mac-acl)#deny tagged-eth2 00-11-11-11-11-11 ff-ff-ff-ff-ff-ff any vid 3 Console(config-mac-acl)#end...

  • Page 297: Show Access-List Mac Mask-Precedence

    show access-list mac mask-precedence This command shows the ingress or egress rule masks for MAC ACLs. Syntax show access-list mac mask-precedence [in | out] • in – Ingress mask precedence for ingress ACLs. • out – Egress mask precedence for egress ACLs. Command Mode Privileged Exec Example...

  • Page 298: Show Mac Access-Group

    Command Line Interface Related Commands show mac access-list (4-103) show mac access-group This command shows the ports assigned to MAC ACLs. Command Mode Privileged Exec Example Console#show mac access-group Interface ethernet 1/5 MAC access-list M5 out Console# Related Commands mac access-group (4-107) map access-list mac This command sets the output queue for packets matching an ACL rule.

  • Page 299: Show Map Access-List Mac

    Example Console(config)#int eth 1/5 Console(config-if)#map access-list mac M5 cos 0 Console(config-if)# Related Commands queue cos-map (4-194) show map access-list mac (4-109) show map access-list mac This command shows the CoS value mapped to a MAC ACL for the current interface. (The CoS value determines the output queue for packets matching an ACL rule.) Syntax show map access-list mac [interface]...

  • Page 300: Match Access-List Mac

    Command Line Interface match access-list mac This command changes the IEEE 802.1p priority of a Layer 2 frame matching the defined ACL rule. (This feature is commonly referred to as ACL packet marking.) Use the no form to remove the ACL marker. Syntax match access-list mac acl_name set priority priority no match access-list mac acl_name...

  • Page 301: Acl Information

    ACL Information Table 4-37. ACL Information Commands Command Function show access-list Show all ACLs and associated rules show access-group Shows the ACLs assigned to each port show access-list This command shows all ACLs and associated rules, as well as all the user-defined masks.

  • Page 302: Snmp Commands

    Command Line Interface SNMP Commands Controls access to this switch from management stations using the Simple Network Management Protocol (SNMP), as well as the error types sent to trap managers. Command Function snmp-server community Sets up the community access string to permit access to SNMP commands snmp-server contact Sets the system contact string...

  • Page 303: Snmp-Server Contact

    Example Console(config)#snmp-server community alpha rw Console(config)# snmp-server contact This command sets the system contact string. Use the no form to remove the system contact information. Syntax snmp-server contact string no snmp-server contact string - String that describes the system contact information. (Maximum length: 255 characters) Default Setting None...

  • Page 304: Snmp-Server Host

    Command Line Interface Related Commands snmp-server contact (4-113) snmp-server host This command specifies the recipient of a Simple Network Management Protocol notification operation. Use the no form to remove the specified host. Syntax snmp-server host host-addr community-string [version {1 | 2c}] no snmp-server host host-addr •...

  • Page 305: Snmp-Server Enable Traps

    Related Commands snmp-server enable traps (4-115) snmp-server enable traps This command enables this device to send Simple Network Management Protocol traps (SNMP notifications). Use the no form to disable SNMP notifications. Syntax [no] snmp-server enable traps [authentication | link-up-down] • authentication - Keyword to issue authentication failure traps. •...
  • Page 306 Command Line Interface Command Usage This command provides information on the community access strings, counter information for SNMP input and output protocol data units, and whether or not SNMP logging has been enabled with the snmp-server enable traps command. Example Console#show snmp System Contact: Paul System Location: WC-19...

  • Page 307: Dns Commands

    DNS Commands These commands are used to configure Domain Naming System (DNS) services. You can manually configure entries in the DNS domain name to IP address mapping table, configure default domain names, or specify one or more name servers to use for domain name to address translation.

  • Page 308: Clear Host

    Command Line Interface Command Usage Servers or other network devices may support one or more connections via multiple IP addresses. If more than one IP address is associated with a host name using this command, a DNS client can try each address in succession, until it establishes a connection with the target device.

  • Page 309: Ip Domain-List

    Default Setting None Command Mode Global Configuration Example Console(config)#ip domain-name sample.com Console(config)#end Console#show dns Domain Lookup Status: DNS disabled Default Domain Name: sample.com Domain Name List: Name Server List: Console# Related Commands ip domain-list (4-119) ip name-server (4-120) ip domain-lookup (4-121) ip domain-list This command defines a list of domain names that can be appended to incomplete host names (i.e., host names passed from a client that are not formatted with dotted...

  • Page 310: Ip Name-Server

    Command Line Interface Example This example adds two domain names to the current list and then displays the list. Console(config)#ip domain-list sample.com.jp Console(config)#ip domain-list sample.com.uk Console(config)#end Console#show dns Domain Lookup Status: DNS disabled Default Domain Name: sample.com Domain Name List: sample.com.jp sample.com.uk Name Server List:...

  • Page 311: Ip Domain-Lookup

    Example This example adds two domain-name servers to the list and then displays the list. Console(config)#ip name-server 192.168.1.55 10.1.0.55 Console(config)#end Console#show dns Domain Lookup Status: DNS disabled Default Domain Name: sample.com Domain Name List: sample.com.jp sample.com.uk Name Server List: 192.168.1.55 10.1.0.55 Console# Related Commands...

  • Page 312: Show Hosts

    Command Line Interface Example This example enables DNS and then displays the configuration. Console(config)#ip domain-lookup Console(config)#end Console#show dns Domain Lookup Status: DNS enabled Default Domain Name: sample.com Domain Name List: sample.com.jp sample.com.uk Name Server List: 192.168.1.55 10.1.0.55 Console# Related Commands ip domain-name (4-118) ip name-server (4-120) show hosts...

  • Page 313: Show Dns

    show dns This command displays the configuration of the DNS server. Command Mode Privileged Exec Example Console#show dns Domain Lookup Status: DNS enabled Default Domain Name: sample.com Domain Name List: sample.com.jp sample.com.uk Name Server List: 192.168.1.55 10.1.0.55 Console# show dns cache This command displays entries in the DNS cache.

  • Page 314: Clear Dns Cache

    Command Line Interface clear dns cache This command clears all entries in the DNS cache. Command Mode Privileged Exec Example Console#clear dns cache Console#show dns cache FLAG TYPE Console# 4-124 DOMAIN...

  • Page 315: Interface

    Interface Commands These commands are used to display or set communication parameters for an Ethernet port, aggregated link, or VLAN. Command Function interface Configures an interface type and enters interface configuration mode description Adds a description to an interface configuration speed-duplex Configures the speed and duplex operation of a given interface when autonegotiation is disabled...

  • Page 316: Description

    Command Line Interface Command Mode Global Configuration Example To specify port 24, enter the following command: Console(config)#interface ethernet 1/24 Console(config-if)# description This command adds a description to an interface. Use the no form to remove the description. Syntax description string no description string - Comment or a description to help you remember what is attached to this interface.

  • Page 317: Negotiation

    Default Setting • Auto-negotiation is enabled by default. • When auto-negotiation is disabled, the default speed-duplex setting is 100half for 100BASE-TX ports and 1000full for Gigabit Ethernet ports. Command Mode Interface Configuration (Ethernet, Port Channel) Command Usage • To force operation to the speed and duplex mode specified in a speed-duplex command, use the no negotiation command to disable auto-negotiation on the selected interface.

  • Page 318: Capabilities

    Command Line Interface • If autonegotiation is disabled, auto-MDI/MDI-X pin signal configuration will also be disabled for the RJ-45 ports. Example The following example configures port 11 to use autonegotiation. Console(config)#interface ethernet 1/11 Console(config-if)#negotiation Console(config-if)# Related Commands capabilities (4-128) speed-duplex (4-126) capabilities This command advertises the port capabilities of a given interface during autonegotiation.

  • Page 319: Flowcontrol

    Example The following example configures Ethernet port 5 capabilities to 100half, 100full and flow control. Console(config)#interface ethernet 1/5 Console(config-if)#capabilities 100half Console(config-if)#capabilities 100full Console(config-if)#capabilities flowcontrol Console(config-if)# Related Commands negotiation (4-127) speed-duplex (4-126) flowcontrol (4-129) flowcontrol This command enables flow control. Use the no form to disable flow control. Syntax [no] flowcontrol Default Setting...

  • Page 320: Combo-Forced-Mode

    Command Line Interface Example The following example enables flow control on port 5. Console(config)#interface ethernet 1/5 Console(config-if)#flowcontrol Console(config-if)#no negotiation Console(config-if)# Related Commands negotiation (4-127) capabilities (flowcontrol, symmetric) (4-128) combo-forced-mode This command forces the port type selected for combination ports 21-24/45-48. Use the no form to restore the default mode.

  • Page 321: Switchport Broadcast Packet-Rate

    Default Setting All interfaces are enabled. Command Mode Interface Configuration (Ethernet, Port Channel) Command Usage This command allows you to disable a port due to abnormal behavior (e.g., excessive collisions), and then reenable it after the problem has been resolved. You may also want to disable a port for security reasons. Example The following example disables port 5.

  • Page 322: Clear Counters

    Command Line Interface Example The following shows how to configure broadcast storm control at 600 packets per second: Console(config)#interface ethernet 1/5 Console(config-if)#switchport broadcast packet-rate 600 Console(config-if)# clear counters This command clears statistics on an interface. Syntax clear counters interface interface •...

  • Page 323: Show Interfaces Status

    show interfaces status This command displays the status for an interface. Syntax show interfaces status [interface] interface • ethernet unit/port - unit - This is device 1. - port - Port number. • port-channel channel-id (Range: 1-6) • vlan vlan-id (Range: 1-4094) Default Setting Shows the status for all interfaces.

  • Page 324: Show Interfaces Counters

    Command Line Interface show interfaces counters This command displays interface statistics. Syntax show interfaces counters [interface] interface • ethernet unit/port - unit - This is device 1. - port - Port number. • port-channel channel-id (Range: 1-6) Default Setting Shows the counters for all interfaces. Command Mode Normal Exec, Privileged Exec Command Usage...

  • Page 325: Show Interfaces Switchport

    show interfaces switchport This command displays the administrative and operational status of the specified interfaces. Syntax show interfaces switchport [interface] interface • ethernet unit/port - unit - This is device 1. - port - Port number. • port-channel channel-id (Range: 1-6) Default Setting Shows all interfaces.

  • Page 326: Mirror Port Commands

    Command Line Interface Table 4-42. interfaces switchport - display description Field Description Ingress rule Shows if ingress filtering is enabled or disabled (page 4-177). Acceptable frame type Shows if acceptable VLAN frames include all types or tagged frames only (page 4-176). Native VLAN Indicates the default Port VLAN ID (page 4-178).

  • Page 327: Show Port Monitor

    Command Usage • You can mirror traffic from any source port to a destination port for real-time analysis. You can then attach a logic analyzer or RMON probe to the destination port and study the traffic crossing the source port in a completely unobtrusive manner.

  • Page 328: Rate Limit Commands

    Command Line Interface Example The following shows mirroring configured from port 6 to port 11: Console(config)#interface ethernet 1/11 Console(config-if)#port monitor ethernet 1/6 Console(config-if)#end Console#show port monitor Port Mirroring ------------------------------------- Destination port(listen port):Eth1/1 Source port(monitored port) Mode Console# Rate Limit Commands This function allows the network manager to control the maximum rate for traffic transmitted or received on an interface.

  • Page 329: Link Aggregation Commands

    Example Console(config)#interface ethernet 1/1 Console(config-if)#rate-limit input 600 Console(config-if)# Link Aggregation Commands Ports can be statically grouped into an aggregate link (i.e., trunk) to increase the bandwidth of a network connection or to ensure fault recovery. Or you can use the Link Aggregation Control Protocol (LACP) to automatically negotiate a trunk link between this switch and another network device.

  • Page 330: Channel-Group

    Command Line Interface • All the ports in a trunk have to be treated as a whole when moved from/to, added or deleted from a VLAN via the specified port-channel. • STP, VLAN, and IGMP settings can only be made for the entire trunk via the specified port-channel.

  • Page 331: Lacp

    lacp This command enables 802.3ad Link Aggregation Control Protocol (LACP) for the current interface. Use the no form to disable it. Syntax [no] lacp Default Setting Disabled Command Mode Interface Configuration (Ethernet) Command Usage • The ports on both ends of an LACP trunk must be configured for full duplex, either by forced mode or auto-negotiation.

  • Page 332: Lacp System-Priority

    Command Line Interface Current status: Created by: lacp Link status: Up Operation speed-duplex: 1000full Flow control type: None Member Ports: Eth1/11, Eth1/12, Eth1/13, Console# lacp system-priority This command configures a port's LACP system priority. Use the no form to restore the default setting.

  • Page 333: Lacp Admin-Key (Ethernet Interface)

    lacp admin-key (Ethernet Interface) This command configures a port's LACP administration key. Use the no form to restore the default setting. Syntax lacp {actor | partner} admin-key key [no] lacp {actor | partner} admin-key • actor - The local side an aggregate link. •...

  • Page 334: Lacp Admin-Key (Port Channel)

    Command Line Interface lacp admin-key (Port Channel) This command configures a port channel's LACP administration key string. Use the no form to restore the default setting. Syntax lacp admin-key key [no] lacp admin-key key - The port channel admin key is used to identify a specific link aggregation group (LAG) during local LACP setup on this switch.

  • Page 335: Show Lacp

    Command Mode Interface Configuration (Ethernet) Command Usage • Setting a lower value indicates a higher effective priority. • If an active port link goes down, the backup port with the highest priority is selected to replace the downed link. However, if two or more ports have the same LACP port priority, the port with the lowest physical port number will be selected as the backup port.
  • Page 336 Command Line Interface Example Console#show lacp 1 counters Channel group : 1 ------------------------------------------------------------------------- Eth 1/ 1 ------------------------------------------------------------------------- LACPDUs Sent : 21 LACPDUs Received : 21 Marker Sent : 0 Marker Received : 0 LACPDUs Unknown Pkts : 0 LACPDUs Illegal Pkts : 0 Table 4-46.
  • Page 337 Console#show lacp 1 internal Channel group : 1 ------------------------------------------------------------------------- Oper Key : 4 Admin Key : 0 Eth 1/1 ------------------------------------------------------------------------- LACPDUs Internal : 30 sec LACP System Priority : 32768 LACP Port Priority : 32768 Admin Key : 4 Oper Key : 4 Admin State : defaulted, aggregation, long timeout, LACP-activity Oper State : distributing, collecting, synchronization, aggregation, long timeout, LACP-activity...
  • Page 338 Command Line Interface Console#show lacp 1 neighbors Channel group 1 neighbors ------------------------------------------------------------------------- Eth 1/1 ------------------------------------------------------------------------- Partner Admin System ID : 32768, 00-00-00-00-00-00 Partner Oper System ID : 32768, 00-00-00-00-00-01 Partner Admin Port Number : 1 Partner Oper Port Number : 1 Port Admin Priority : 32768 Port Oper Priority : 32768 Admin Key : 0...

  • Page 339: Address Table Commands

    Console#show lacp sysid Channel group System Priority ------------------------------------------------------------------------- Console# Table 4-49. show lacp sysid - display description Field Description Channel group A link aggregation group configured on this switch. System Priority* LACP system priority for this channel group. System MAC Address* System MAC address.

  • Page 340: Mac-Address-Table Static

    Command Line Interface mac-address-table static This command maps a static address to a destination port in a VLAN. Use the no form to remove an address. Syntax mac-address-table static mac-address interface interface vlan vlan-id [action] no mac-address-table static mac-address vlan vlan-id •...

  • Page 341: Clear Mac-Address-Table Dynamic

    clear mac-address-table dynamic This command removes any learned entries from the forwarding database and clears the transmit and receive counts for any static or system configured entries. Default Setting None Command Mode Privileged Exec Example Console#clear mac-address-table dynamic show mac-address-table This command shows classes of entries in the bridge-forwarding database.

  • Page 342: Mac-Address-Table Aging-Time

    Command Line Interface 00-00-00-00-00-00 means an exact match, and a mask of FF-FF-FF-FF-FF-FF means “any.” • The maximum number of address entries is 8191. Example Console#show mac-address-table Interface Mac Address --------- ----------------- ---- ----------------- Eth 1/ 1 00-e0-29-94-34-de Console# mac-address-table aging-time This command sets the aging time for entries in the address table.

  • Page 343: Spanning Tree Commands

    Spanning Tree Commands This section includes commands that configure the Spanning Tree Algorithm (STA) globally for the switch, and commands that configure STA for the selected interface. Table 4-51. Spanning Tree Commands Command Function spanning-tree Enables the spanning tree protocol spanning-tree mode Configures STP, RSTP or MSTP mode spanning-tree forward-time...

  • Page 344: Spanning-Tree

    Command Line Interface spanning-tree This command enables the Spanning Tree Algorithm globally for the switch. Use the no form to disable it. Syntax [no] spanning-tree Default Setting Spanning tree is enabled. Command Mode Global Configuration Command Usage The Spanning Tree Algorithm (STA) can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers.

  • Page 345: Spanning-Tree Forward-Time

    Command Usage • Spanning Tree Protocol Uses RSTP for the internal state machine, but sends only 802.1D BPDUs. - This creates one spanning tree instance for the entire network. If multiple VLANs are implemented on a network, the path between specific VLAN members may be inadvertently disabled to prevent network loops, thus isolating group members.

  • Page 346: Spanning-Tree Hello-Time

    Command Line Interface Default Setting 15 seconds Command Mode Global Configuration Command Usage This command sets the maximum time (in seconds) the root device will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames.

  • Page 347: Spanning-Tree Max-Age

    spanning-tree max-age This command configures the spanning tree bridge maximum age globally for this switch. Use the no form to restore the default. Syntax spanning-tree max-age seconds no spanning-tree max-age seconds - Time in seconds. (Range: 6-40 seconds) The minimum value is the higher of 6 or [2 x (hello-time + 1)]. The maximum value is the lower of 40 or [2 x (forward-time - 1)].

  • Page 348: Spanning-Tree Pathcost Method

    Command Line Interface Command Mode Global Configuration Command Usage Bridge priority is used in selecting the root device, root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device.

  • Page 349: Spanning-Tree Transmission-Limit

    spanning-tree transmission-limit This command configures the minimum interval between the transmission of consecutive RSTP/MSTP BPDUs. Use the no form to restore the default. Syntax spanning-tree transmission-limit count no spanning-tree transmission-limit count - The transmission limit in seconds. (Range: 1-10) Default Setting Command Mode Global Configuration Command Usage...

  • Page 350: Mst Vlan

    Command Line Interface mst vlan This command adds VLANs to a spanning tree instance. Use the no form to remove the specified VLANs. Using the no form without any VLAN parameters to remove all VLANs. Syntax [no] mst instance_id vlan vlan-range •...

  • Page 351: Mst Priority

    mst priority This command configures the priority of a spanning tree instance. Use the no form to restore the default. Syntax mst instance_id priority priority no mst instance_id priority • instance_id - Instance identifier of the spanning tree. (Range: 0-4094) •...

  • Page 352: Revision

    Command Line Interface Command Usage The MST region name and revision number (page 4-162) are used to designate a unique MST region. A bridge (i.e., spanning-tree compliant device such as this switch) can only belong to one MST region. And all bridges in the same region must be configured with the same MST instances.

  • Page 353: Max-Hops

    max-hops This command configures the maximum number of hops in the region before a BPDU is discarded. Use the no form to restore the default. Syntax max-hops hop-number hop-number - Maximum hop number for multiple spanning tree. (Range: 1-40) Default Setting Command Mode MST Configuration Command Usage...

  • Page 354: Spanning-Tree Cost

    Command Line Interface spanning-tree cost This command configures the spanning tree path cost for the specified interface. Use the no form to restore the default. Syntax spanning-tree cost cost no spanning-tree cost cost - The path cost for the port. (Range: 1-200,000,000)) The recommended range is: •...

  • Page 355: Spanning-Tree Edge-Port

    Default Setting Command Mode Interface Configuration (Ethernet, Port Channel) Command Usage • This command defines the priority for the use of a port in the Spanning Tree Algorithm. If the path cost for all ports on a switch are the same, the port with the highest priority (that is, lowest value) will be configured as an active link in the spanning tree.

  • Page 356: Spanning-Tree Portfast

    Command Line Interface Example Console(config)#interface ethernet ethernet 1/5 Console(config-if)#spanning-tree edge-port Console(config-if)# Related Commands spanning-tree portfast (4-166) spanning-tree portfast This command sets an interface to fast forwarding. Use the no form to disable fast forwarding. Syntax [no] spanning-tree portfast Default Setting Disabled Command Mode Interface Configuration (Ethernet, Port Channel)

  • Page 357: Spanning-Tree Link-Type

    spanning-tree link-type This command configures the link type for Rapid Spanning Tree and Multiple Spanning Tree. Use the no form to restore the default. Syntax spanning-tree link-type {auto | point-to-point | shared} no spanning-tree link-type • auto - Automatically derived from the duplex mode setting. •...

  • Page 358: Spanning-Tree Mst Port-Priority

    Command Line Interface Default Setting • Ethernet – half duplex: 2,000,000; full duplex: 1,000,000; trunk: 500,000 • Fast Ethernet – half duplex: 200,000; full duplex: 100,000; trunk: 50,000 • Gigabit Ethernet – full duplex: 10,000; trunk: 5,000 Command Mode Interface Configuration (Ethernet, Port Channel) Command Usage •...

  • Page 359: Spanning-Tree Protocol-Migration

    interface with the highest priority (that is, lowest value) will be configured as an active link in the spanning tree. • Where more than one interface is assigned the highest priority, the interface with lowest numeric identifier will be enabled. Example Console(config)#interface ethernet ethernet 1/5 Console(config-if)#spanning-tree mst 1 port-priority 0...

  • Page 360: Show Spanning-Tree

    Command Line Interface show spanning-tree This command shows the configuration for the common spanning tree (CST) or for an instance within the multiple spanning tree (MST). Syntax show spanning-tree [interface | mst instance_id] • interface • ethernet unit/port - unit - This is device 1. - port - Port number.
  • Page 361 Example Console#show spanning-tree Spanning-tree information --------------------------------------------------------------- Spanning tree mode Spanning tree enable/disable Instance Vlans configuration Priority Bridge Hello Time (sec.) Bridge Max Age (sec.) Bridge Forward Delay (sec.) Root Hello Time (sec.) Root Max Age (sec.) Root Forward Delay (sec.) Max hops Remaining hops Designated Root...

  • Page 362: Show Spanning-Tree Mst Configuration

    Command Line Interface show spanning-tree mst configuration This command shows the configuration of the multiple spanning tree. Syntax show spanning-tree mst configuration Command Mode Privileged Exec Example Console#show spanning-tree mst configuration Mstp Configuration Information -------------------------------------------------------------- Configuration name:00 00 a3 42 00 80 Revision level:0 Instance Vlans --------------------------------------------------------------...

  • Page 363: Editing Vlan Groups

    Editing VLAN Groups Command Function vlan database Enters VLAN database mode to add, change, and delete VLANs vlan Configures a VLAN, including VID, name and state vlan database This command enters VLAN database mode. All commands in this mode will take effect immediately.

  • Page 364: Vlan

    Command Line Interface vlan This command configures a VLAN. Use the no form to restore the default settings or delete a VLAN. Syntax vlan vlan-id [name vlan-name] media ethernet [state {active | suspend}] no vlan vlan-id [name | state] • vlan-id - ID of configured VLAN. (Range: 1-4094, no leading zeroes) •...

  • Page 365: Configuring Vlan Interfaces

    Configuring VLAN Interfaces Table 4-54. Configuring VLAN Interfaces Command Function interface vlan Enters interface configuration mode for a specified VLAN switchport mode Configures VLAN membership mode for an interface switchport Configures frame types to be accepted by an interface acceptable-frame-types switchport ingress-filtering Enables ingress filtering on an interface switchport native vlan...

  • Page 366: Switchport Mode

    Command Line Interface switchport mode This command configures the VLAN membership mode for a port. Use the no form to restore the default. Syntax switchport mode {trunk | hybrid} no switchport mode • trunk - Specifies a port as an end-point for a VLAN trunk. A trunk is a direct link between two switches, so the port transmits tagged frames that identify the source VLAN.

  • Page 367: Switchport Ingress-Filtering

    Command Mode Interface Configuration (Ethernet, Port Channel) Command Usage When set to receive all frame types, any received frames that are untagged are assigned to the default VLAN. Example The following example shows how to restrict the traffic received on port 1 to tagged frames: Console(config)#interface ethernet 1/1 Console(config-if)#switchport acceptable-frame-types tagged...

  • Page 368: Switchport Native Vlan

    Command Line Interface Example The following example shows how to set the interface to port 1 and then enable ingress filtering: Console(config)#interface ethernet 1/1 Console(config-if)#switchport ingress-filtering Console(config-if)# switchport native vlan This command configures the PVID (i.e., default VLAN ID) for a port. Use the no form to restore the default.

  • Page 369: Switchport Allowed Vlan

    switchport allowed vlan This command configures VLAN groups on the selected interface. Use the no form to restore the default. Syntax switchport allowed vlan {add vlan-list [tagged | untagged] | remove vlan-list} no switchport allowed vlan • add vlan-list - List of VLAN identifiers to add. •...

  • Page 370: Switchport Forbidden Vlan

    Command Line Interface switchport forbidden vlan This command configures forbidden VLANs. Use the no form to remove the list of forbidden VLANs. Syntax switchport forbidden vlan {add vlan-list | remove vlan-list} no switchport forbidden vlan • add vlan-list - List of VLAN identifiers to add. •...

  • Page 371: Displaying Vlan Information

    Displaying VLAN Information Command Function show vlan Shows VLAN information show interfaces status vlan Displays status for the specified VLAN interface show interfaces switchport Displays the administrative and operational status of an interface show vlan This command shows VLAN information. Syntax show vlan [id vlan-id | name vlan-name] •...

  • Page 372: Configuring Private Vlans

    Command Line Interface Configuring Private VLANs Private VLANs provide port-based security and isolation between ports within the assigned VLAN. This section describes commands used to configure private VlANs. Table 4-56. Private VLAN Commands Command Function pvlan Enables and configured private VLANS show pvlan Displays the configured private VLANS pvlan...

  • Page 373: Show Pvlan

    show pvlan This command displays the configured private VLAN. Command Mode Privileged Exec Example Console#show pvlan Private VLAN status: Enabled Up-link port: Ethernet 1/24 Down-link port: Ethernet 1/1 Ethernet 1/2 Ethernet 1/3 Ethernet 1/4 Console# Configuring Protocol-based VLANs The network devices required to support multiple protocols cannot be easily grouped into a common VLAN.

  • Page 374: Protocol-Vlan Protocol-Group (Configuring Groups)

    Command Line Interface protocol-vlan protocol-group (Configuring Groups) This command creates a protocol group, or to add specific protocols to a group. Use the no form to remove a protocol group. Syntax protocol-vlan protocol-group group-id [{add | remove} frame_type frame protocol-type protocol] no protocol-vlan protocol-group group-id •...

  • Page 375: Show Protocol-Vlan Protocol-Group

    Command Usage • When creating a protocol-based VLAN, only assign interfaces via this command. If you assign interfaces using any of the other VLAN commands (such as vlan on page 4-174), these interfaces will admit traffic of any protocol type into the associated VLAN. •...

  • Page 376: Show Interfaces Protocol-Vlan Protocol-Group

    Command Line Interface show interfaces protocol-vlan protocol-group This command shows the mapping from protocol groups to VLANs for the selected interfaces. Syntax show interfaces protocol-vlan protocol-group [interface] interface • ethernet unit/port - unit - This is device 1. - port - Port number. •...

  • Page 377: Gvrp And Bridge Extension Commands

    GVRP and Bridge Extension Commands GARP VLAN Registration Protocol defines a way for switches to exchange VLAN information in order to automatically register VLAN members on interfaces across the network. This section describes how to enable GVRP for individual interfaces and globally for the switch, as well as how to display default configuration settings for the Bridge Extension MIB.

  • Page 378: Show Bridge-Ext

    Command Line Interface show bridge-ext This command shows the configuration for bridge extension commands. Default Setting None Command Mode Privileged Exec Command Usage See “Displaying Basic VLAN Information” on page 3-113 and “Displaying Bridge Extension Capabilities” on page 3-12 for a description of the displayed items.

  • Page 379: Show Gvrp Configuration

    show gvrp configuration This command shows if GVRP is enabled. Syntax show gvrp configuration [interface] interface • ethernet unit/port - unit - This is device 1. - port - Port number. • port-channel channel-id (Range: 1-6) Default Setting Shows both global and interface-specific configuration. Command Mode Normal Exec, Privileged Exec Example...

  • Page 380: Show Garp Timer

    Command Line Interface Command Usage • Group Address Registration Protocol is used by GVRP and GMRP to register or deregister client attributes for client services within a bridged LAN. The default values for the GARP timers are independent of the media access method or data rate.

  • Page 381: Priority Commands

    Related Commands garp timer (4-189) Priority Commands The commands described in this section allow you to specify which data packets have greater precedence when traffic is buffered in the switch due to congestion. This switch supports CoS with eight priority queues for each port. Data packets in a port’s high-priority queue will be transmitted before those in the lower-priority queues.

  • Page 382: Queue Mode

    Command Line Interface queue mode This command sets the queue mode to strict priority or Weighted Round-Robin (WRR) for the class of service (CoS) priority queues. Use the no form to restore the default value. Syntax queue mode {strict | wrr} no queue mode •...

  • Page 383: Switchport Priority Default

    switchport priority default This command sets a priority for incoming untagged frames. Use the no form to restore the default value. Syntax switchport priority default default-priority-id no switchport priority default default-priority-id - The priority number for untagged ingress traffic. The priority is a number from 0 to 7. Seven is the highest priority. Default Setting The priority is not set, and the default value for untagged frames received on the interface is zero.

  • Page 384: Queue Bandwidth

    Command Line Interface queue bandwidth This command assigns weighted round-robin (WRR) weights to the eight class of service (CoS) priority queues. Use the no form to restore the default weights. Syntax queue bandwidth weight1...weight4 no queue bandwidth weight1...weight4 - The ratio of weights for queues 0 - 3 determines the weights used by the WRR scheduler.

  • Page 385: Show Queue Mode

    Default Setting This switch supports Class of Service by using eight priority queues, with Weighted Round Robin queuing for each port. Eight separate traffic classes are defined in IEEE 802.1p. The default priority levels are assigned according to recommendations in the IEEE 802.1p standard as shown below. Queue Priority Command Mode...

  • Page 386: Show Queue Bandwidth

    Command Line Interface Example Console#show queue mode Queue mode: strict Console# show queue bandwidth This command displays the weighted round-robin (WRR) bandwidth allocation for the eight priority queues. Default Setting None Command Mode Privileged Exec Example Console#show queue bandwidth Information of Eth 1/1 Queue ID Weight --------...

  • Page 387: Map Ip Port (Global Configuration)

    Example Console#show queue cos-map ethernet 1/1 Information of Eth 1/1 CoS Value : 0 1 2 3 4 5 6 7 Priority Queue: 0 1 2 3 4 5 6 7 Console# Priority Commands (Layer 3 and 4) Table 4-62. Priority Commands (Layer 3 and 4) Command Function map ip port...

  • Page 388: Map Ip Port (Interface Configuration)

    Command Line Interface Example The following example shows how to enable TCP/UDP port mapping globally: Console(config)#map ip port Console(config)# map ip port (Interface Configuration) This command enables IP port mapping (i.e., TCP/UDP port priority). Use the no form to remove a specific setting. Syntax map ip port port number cos cos-value no map ip port port-number...

  • Page 389: Map Ip Precedence (Interface Configuration)

    Command Usage • The precedence for priority mapping is IP Port, IP Precedence or IP DSCP, and default switchport priority. • IP Precedence and IP DSCP cannot both be enabled. Enabling one of these priority types will automatically disable the other type. Example The following example shows how to enable IP precedence mapping globally: Console(config)#map ip precedence...

  • Page 390: Map Ip Dscp (Global Configuration)

    Command Line Interface map ip dscp (Global Configuration) This command enables IP DSCP mapping (i.e., Differentiated Services Code Point mapping). Use the no form to disable IP DSCP mapping. Syntax [no] map ip dscp Default Setting Disabled Command Mode Global Configuration Command Usage •...

  • Page 391: Show Map Ip Port

    Default Setting The DSCP default values are defined in the following table. Note that all the DSCP values that are not specified are mapped to CoS value 0. Table 4-64. Mapping IP DSCP to CoS Values IP DSCP Value 10, 12, 14, 16 18, 20, 22, 24 26, 28, 30, 32, 34, 36 38, 40, 42...

  • Page 392: Show Map Ip Precedence

    Command Line Interface Default Setting None Command Mode Privileged Exec Example The following shows that HTTP traffic has been mapped to CoS value 0: Console#show map ip port ethernet 1/5 TCP port mapping status: enabled Port Port no. --------- ---------- --- Eth 1/ 5 Console# Related Commands...

  • Page 393: Show Map Ip Dscp

    Example Console#show map ip precedence ethernet 1/5 Precedence mapping status: disabled Port Precedence COS --------- ---------- --- Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Eth 1/ 5 Console# Related Commands map ip port (Global Configuration) (4-197)

  • Page 394: Multicast Filtering Commands

    Command Line Interface Example Console#show map ip dscp ethernet 1/1 DSCP mapping status: disabled Port DSCP COS --------- ---- --- Eth 1/ 1 Eth 1/ 1 Eth 1/ 1 Eth 1/ 1 Eth 1/ 1 Eth 1/ 1 Eth 1/ 1 Console# Related Commands map ip dscp (Global Configuration) (4-200)

  • Page 395: Ip Igmp Snooping

    ip igmp snooping This command enables IGMP snooping on this switch. Use the no form to disable it. Syntax [no] ip igmp snooping Default Setting Enabled Command Mode Global Configuration Example The following example enables IGMP snooping. Console(config)#ip igmp snooping Console(config)# ip igmp snooping vlan static This command adds a port to a multicast group.

  • Page 396: Ip Igmp Snooping Version

    Command Line Interface ip igmp snooping version This command configures the IGMP snooping version. Use the no form to restore the default. Syntax ip igmp snooping version {1 | 2} no ip igmp snooping version • 1 - IGMP Version 1 •...

  • Page 397: Show Mac-Address-Table Multicast

    Example The following shows the current IGMP snooping configuration: Console#show ip igmp snooping Service status: Enabled Querier status: Enabled Query count: 2 Query interval: 125 sec Query max response time: 10 sec Router port expire time: 300 sec IGMP snooping version: Version 2 Console# show mac-address-table multicast This command shows known multicast addresses.

  • Page 398: Igmp Query Commands (Layer 2)

    Command Line Interface IGMP Query Commands (Layer 2) Table 4-67. IGMP Query Commands (Layer 2) Command Function ip igmp snooping querier Allows this device to act as the querier for IGMP snooping GC ip igmp snooping Configures the query count query-count ip igmp snooping Configures the query interval...

  • Page 399: Ip Igmp Snooping Query-Interval

    Default Setting 2 times Command Mode Global Configuration Command Usage The query count defines how long the querier waits for a response from a multicast client before taking action. If a querier has sent a number of queries defined by this command, but a client has not responded, a countdown timer is started using the time defined by ip igmp snooping query-max- response-time.

  • Page 400: Ip Igmp Snooping Query-Max-Response-Time

    Command Line Interface ip igmp snooping query-max-response-time This command configures the query report delay. Use the no form to restore the default. Syntax ip igmp snooping query-max-response-time seconds no ip igmp snooping query-max-response-time seconds - The report delay advertised in IGMP queries. (Range: 5- 25) Default Setting 10 seconds Command Mode...

  • Page 401: Static Multicast Routing Commands

    Default Setting 300 seconds Command Mode Global Configuration Command Usage The switch must use IGMPv2 for this command to take effect. Example The following shows how to configure the default timeout to 300 seconds: Console(config)#ip igmp snooping router-port-expire-time 300 Console(config)# Related Commands ip igmp snooping version (4-206) Static Multicast Routing Commands...

  • Page 402: Show Ip Igmp Snooping Mrouter

    Command Line Interface Command Usage Depending on your network connections, IGMP snooping may not always be able to locate the IGMP querier. Therefore, if the IGMP querier is a known multicast router/switch connected over the network to an interface (port or trunk) on your router, you can manually configure that interface to join all the current multicast groups.

  • Page 403: Ip Interface Commands

    IP Interface Commands An IP addresses may be used for management access to the switch over your network. The IP address for this switch is obtained via DHCP by default. You can manually configure a specific IP address, or direct the device to obtain an address from a BOOTP or DHCP server when it is powered on.

  • Page 404: Ip Dhcp Restart

    Command Line Interface • If you select the bootp or dhcp option, IP is enabled but will not function until a BOOTP or DHCP reply has been received. Requests will be broadcast periodically by this device in an effort to learn its IP address. (BOOTP and DHCP values can include the IP address, default gateway, and subnet mask).

  • Page 405: Ip Default-Gateway

    Related Commands ip address (4-213) ip default-gateway This command establishes a static route between this switch and management stations that exist on another network segment. Use the no form to remove the static route. Syntax ip default-gateway gateway no ip default-gateway gateway - IP address of the default gateway Default Setting No static route is established.

  • Page 406: Show Ip Redirects

    Command Line Interface Related Commands show ip redirects (4-216) show ip redirects This command shows the default gateway configured for this device. Default Setting None Command Mode Privileged Exec Example Console#show ip redirects ip default gateway 10.1.0.254 Console# Related Commands ip default-gateway (4-215) ping This command sends ICMP echo request packets to another node on the network.

  • Page 407: Related Commands

    - Network or host unreachable - The gateway found no corresponding entry in the route table. • Press <Esc> to stop pinging. Example Console#ping 10.1.0.9 Type ESC to abort. PING to 10.1.0.9, by 5 32-byte payload ICMP packets, timeout is 5 seconds response time: 10 ms response time: 10 ms response time: 10 ms...
  • Page 408 Command Line Interface 4-218...

  • Page 409: Appendix A: Software Specifications

    Appendix A: Software Specifications Software Features Authentication Local, RADIUS, TACACS, Port (802.1x), HTTPS, SSH, Port Security Access Control Lists IP, MAC (up to 32 lists) DHCP Client DNS Server Port Configuration 1000BASE-T: 10/100 Mbps at half/full duplex, 1000 Mbps at full duplex 1000BASE-SX/LX/LH: 1000 Mbps, full duplex Flow Control Full Duplex: IEEE 802.3x...

  • Page 410: Management Features

    Software Specifications Additional Features BOOTP client SNTP (Simple Network Time Protocol) SNMP (Simple Network Management Protocol) RMON (Remote Monitoring, groups 1, 2, 3, 9) SMTP Email Alerts Management Features In-Band Management Telnet, Web-based HTTP or HTTPS, SNMP manager, or Secure Shell Out-of-Band Management RS-232 DB-9 console port Software Loading...

  • Page 411: Management Information Bases

    Management Information Bases RMON (RFC 1757 groups 1,2,3,9) SNMP (RFC 1157) SNMPv2 (RFC 1907) SNTP (RFC 2030) SSH (Version 2.0) TFTP (RFC 1350) Management Information Bases Bridge MIB (RFC 1493) Entity MIB (RFC 2737) Ether-like MIB (RFC 2665) Extended Bridge MIB (RFC 2674) Extensible SNMP Agents MIB (RFC 2742) Forwarding Table MIB (RFC 2096) IGMP MIB (RFC 2933)
  • Page 412 Software Specifications...

  • Page 413: Appendix B: Troubleshooting

    Appendix B: Troubleshooting Problems Accessing the Management Interface Symptom Action Cannot connect using Telnet, • Be sure the switch is powered up. web browser, or SNMP • Check network cabling between the management station and the switch. software • Check that you have a valid network connection to the switch and that the •...

  • Page 414: Using System Logs

    Troubleshooting Using System Logs If a fault does occur, refer to the Installation Guide to ensure that the problem you encountered is actually caused by the switch. If the problem appears to be caused by the switch, follow these steps: Enable logging.

  • Page 415: Glossary

    Glossary Access Control List (ACL) ACLs can limit network traffic and restrict access to certain users or devices by checking each packet for certain IP or MAC (i.e., Layer 2) information. Boot Protocol (BOOTP) used to provide bootup information for network devices, including IP BOOTP is address information, the address of the TFTP server that contains the devices system files, and the name of the boot file.
  • Page 416 Glossary GARP VLAN Registration Protocol (GVRP) Defines a way for switches to exchange VLAN information in order to register necessary VLAN members on ports along the Spanning Tree so that VLANs defined in each switch can work automatically over a Spanning Tree network. Generic Attribute Registration Protocol (GARP) GARP is a protocol that can be used by endstations and switches to register and propagate multicast group membership information in a switched environment so...
  • Page 417 Glossary IEEE 802.3x Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links. IGMP Snooping Listening to IGMP Query and IGMP Report packets transferred between IP Multicast Routers and IP Multicast host groups to identify IP Multicast group members. IGMP Query On each subnetwork, one IGMP-capable device will act as the querier —...
  • Page 418 Glossary Management Information Base (MIB) An acronym for Management Information Base. It is a set of database objects that contains information about a specific device. Multicast Switching A process whereby the switch filters incoming multicast frames for services for which no attached host has registered, or forwards them to all ports contained within the designated multicast VLAN group.
  • Page 419 Glossary Rapid Spanning Tree Protocol (RSTP) reduces the convergence time for network topology changes to about 10% of RSTP that required by the older IEEE 802.1D STP standard. Secure Shell (SSH) A secure replacement for remote access functions, including Telnet. SSH can authenticate users with a cryptographic key, and encrypt data connections between management clients and the switch.
  • Page 420 Glossary User Datagram Protocol (UDP) provides a datagram mode for packet-switched communications. It uses IP as the underlying transport mechanism to provide access to IP-like services. UDP packets are delivered just like IP packets – connection-less datagrams that may be discarded before reaching their targets.

  • Page 421: Index

    Index Symbols 3-31 Numerics 802.1x, port authentication 3-43, 4-78 acceptable frame type 3-119, 4-174 Access Control List See ACL Extended IP 3-53, 4-86, 4-87, 4-90 MAC 3-53, 4-86, 4-101, 4-101–4-103 Standard IP 3-53, 4-86, 4-87, 4-89 address table 3-88, 4-147 aging time 3-91, 4-150 BOOTP 3-15, 4-211 BPDU 3-92...
  • Page 422 Index hardware version, displaying 3-10, 4-61 HTTPS 3-34, 4-31 HTTPS, secure server 3-34, 4-31 IEEE 802.1D 3-91, 4-152 IEEE 802.1s 4-152 IEEE 802.1w 3-91, 4-152 IEEE 802.1x 3-43, 4-78 IGMP groups, displaying 3-144, 4-205 Layer 2 3-139, 4-202 query 3-139, 4-206 query, Layer 2 3-140, 4-206 snooping 3-139, 4-203 snooping, configuring 3-140, 4-202...
  • Page 423 queue weights 3-129, 4-192 RADIUS, logon authentication 3-31, 4-71 rate limits, setting 3-83, 4-136 restarting the system 3-25, 4-22 RSTP 3-91, 4-152 global configuration 3-92, 4-152 Secure Shell 3-36, 4-34 configuration 3-36, 4-37 Secure Shell configuration 4-37 serial port configuring 4-11 Simple Network Management Protocol See SNMP SNMP 3-28...
  • Page 424 Index Web interface access requirements 3-1 configuration buttons 3-3 home page 3-2 menu list 3-3, 3-4 panel display 3-3 Index-4...
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