3Com 2426-PWR Installation And User Manual
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3Com 2426-PWR Installation And User Manual

Baseline switch plus
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Baseline Switch 2226-SFP Plus
Baseline Switch 2426-PWR Plus
Baseline Switch 2250-SFP Plus
Installation and User Guide
Installations- und Bedienungsanleitung
3CBLSF26
3CBLSF26PWR
3CBLSF50
www.3Com.com
Part No. 10016622
Published May 2008

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Summary of Contents for 3Com 2426-PWR

  • Page 1 Baseline Switch 2226-SFP Plus Baseline Switch 2426-PWR Plus Baseline Switch 2250-SFP Plus Installation and User Guide Installations- und Bedienungsanleitung 3CBLSF26 3CBLSF26PWR 3CBLSF50 www.3Com.com Part No. 10016622 Published May 2008...
  • Page 2 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

  • Page 3: Table Of Contents

    Using the Console Command Line Interface (CLI) Logging On to the Web Interface Navigating the Web Interface Menu Buttons Port Status Accessing the Switch using the 3Com Switch Detect Application Running the 3Com Switch Detect Application ONFIGURING THE WITCH Configuration Overview...
  • Page 4 Automatic IP Configuration IP Setup Backup Configuration Restore Configuration Firmware Upgrade Reset System Access System Name System Time SNMP Configuring VLANs VLAN Forwarding Tagged/Untagged Frames Sample VLAN Configurations Spanning Tree IGMP Snooping & Query Broadcast Storm QoS VoIP Traffic Settings PoE (3CBLSF26-PWR only) Configuring Port Settings Administration...
  • Page 5 Modem Cable Ethernet Port RJ-45 Pin Assignments CLI R EFERENCE UIDE Getting Started with the Command Line Interface Console Port Logging on to the CLI Automatic Logout Concurrent CLI Sessions CLI Commands Ping Summary ipSetup Upgrade Initialize Reboot Logout Password EGULATORY OTICES LOSSARY...

  • Page 7: Conventions

    BOUT UIDE This guide describes how to install your 3Com Switch and perform initial management configurations. It covers the following switches: Baseline Switch 2226-SFP Plus (3CBLSF26) Baseline Switch 2426-PWR Plus (3CBLSF26PWR) Baseline Switch 2250-SFP Plus (3CBLSF50) Unless noted otherwise, the features, specifications and procedures described hereafter are shared by all the switch models covered in this guide.

  • Page 8: Documentation Comments

    Questions related to technical support or sales should be directed in the first instance to your network supplier. Product Registration You can now register your Baseline Switch on the 3Com Web site to receive up-to-date information on your product: http://esupport.3Com.com...

  • Page 9: Features And Capabilities

    NTRODUCING THE This chapter provides an overview of the features and capabilities of the 3Com Baseline Switch 2226-SFP Plus, 3Com Baseline Switch 2426-PWR Plus, and 3Com Baseline Switch 2250-SFP Plus. It also identifies the contents of the Switch package and helps you get to know the physical features of the device.

  • Page 10: Power-Over-Ethernet Capability

    The Switch also supports a pre-standard implementation of 802.3at, delivering up to 29.6 W per port (measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR), subject to the maximum power budget available. Gigabit Combo Ports (RJ-45/SFP)

  • Page 11: Front Panel

    Figure 3 3CBLSF50 Front and Rear Panels Front Panel The front panel of the Switch contains a series of indicator lights (LEDs) that help describe the state of various networking and connection operations. (1) RJ-45 10/100 Ports WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets.
  • Page 12 29.6 W measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR, subject to power being available from the overall power budget. (2) Gigabit Combo Ports (RJ-45/SFP)
  • Page 13 (4) 10/100BASE-TX Link/Activity Status LEDs The top row (3CBLSF50) and the first (top) and third rows (3CBLSF26/3CBLSF26PWR) of LEDs, which are colored yellow or green, show the link, activity and speed status of the related ports: Table 1 10/100BASE-TX Link/Activity Status LEDs Status Meaning Green...
  • Page 14 NTRODUCING THE ASELINE WITCH 1000BASE-T Mode Table 3 1000BASE-T Link/Activity Status LEDs Link/Activity Meaning Green The link is operating at 1000 Mbps. Yellow The link is operating at 10 or 100 Mbps. Flashing Green Packets are being received or transmitted on the port at 1000 Mbps. Flashing Yellow Packets are being received or transmitted on the port at 10 or 100...

  • Page 15: Rear Panel

    Table 6 SFP Mode SFP/Duplex Status LEDs SFP/Duplex Meaning Green The SFP module is inserted, regardless of the link status. The SFP module is not inserted. The SFP module will only disable the 1000BASE-T interface once there is a valid link on the module. (7) Power LED The Power LED shows the power status of the Switch.

  • Page 16: Package Contents

    One mounting kit (part number 123193-104) ■ Installation CD ■ This User Guide ■ Warranty flyer ■ The Switch is powered from the AC supply. If any of the above items are damaged or missing, contact your 3Com network supplier immediately.

  • Page 17: I Nstalling The S Witch

    3Com Switch Family Safety and Regulatory Information manualen. Du kan hitta denna manual på den CD-ROM som följde med din switch. Du kan även ladda ner denna från 3Com hemsidan: www.3Com.com Importantes informations de securité...

  • Page 18: Positioning The Switch

    Information importante de seguridad Le rogamos lea y siga atentamente las instrucciones indicadas en el manual de seguridad del 3Com Switch Family Safety and Regulatory Information, incluido en este producto. Puede encontrar el manual en el CD-ROM adjunto a su switch.Alternativamente lo puede bajar de la web de 3Com: www.3Com.com...

  • Page 19: Rack-Mounting Or Free-Standing

    It is always good practice to wear an anti-static wrist strap when installing network equipment, connected to a ground point. If one is not available, try to keep in contact with a grounded rack and avoid touching the unit's ports and connectors, if possible. Static discharge can cause reliability problems in your equipment.

  • Page 20: Montagesatz Anweisungen

    Ensure that the power input to your system is clean and free from sags and surges to avoid unforeseen network outages. 3Com recommends that you install power conditioning, especially in areas prone to blackout, power dips and electrical storms.

  • Page 21: Checking For Correct Operation

    You will need to reconfigure the Switch after you reset it. If these do not resolve the issue: Check the 3Com Knowledgebase for a solution. To ■ visit the 3Com Knowledgebase Web site, start your Web browser, and then enter http://knowledgebase.3Com.com.

  • Page 22: Using Sfp Tranceivers

    ■ 3CSFP92 SFP (LX) ■ To access the latest list of approved SFP transceivers for the Switch on the 3Com Web site, enter this URL into your Internet browser: http://www.3Com.com 3Com recommends using 3Com SFPs in the Switch. If you insert an SFP transceiver that is not supported, the Switch will not recognize it.

  • Page 23: Removing An Sfp Transceiver

    At frequent intervals, you should visually check the Switch. Regular checks can give you an early warning of a possible failure; any problems can then be attended to when there will be least effect on users. 3Com recommends periodically checking the items listed Table...
  • Page 24 NSTALLING THE WITCH Table 9 Items to Check Cabling Check that all external cabling connec- tions are secure and that no cables are pulled taut. Cooling fan Where possible, check that the cooling fan (3CBLSF26PWR is operating by listening to the unit. The only) fan is fitted near to the front right hand side of the unit (when viewed from the...

  • Page 25: Requirements For Accessing The Web Interface

    Using the Console Command Line Interface (CLI) ■ Logging On to the Web Interface ■ Navigating the Web Interface ■ Accessing the Switch using the 3Com Switch Detect ■ Application The Switch support the following browsers: Microsoft Internet Explorer (V6.0 and subsequent ■...
  • Page 26 3: C HAPTER ONNECTING TO THE switch will try to obtain an IP address from a DHCP server (assuming the Switch is connected into a network where one is available). If there is no DHCP server available, or you are configuring the Switch in a stand-alone mode, the Switch will allocate itself an “Auto IP”...

  • Page 27: Logging On To The Web Interface

    summary to display the new IP settings. what you should expect to see. Note that when a manual IP address has been assigned it will not revert back to the DHCP mode on subsequent re-boots. You will now know either the DHCP or manual IP address and you can now move on to using the Web interface.

  • Page 28: Navigating The Web Interface

    3: C HAPTER ONNECTING TO THE Navigating the Web Interface The Web interface has been designed to enable you to easily perform advanced configuration tasks and view information about the Switch. Menu The menu is located on the left side of the Web interface.

  • Page 29: Summary

    Figure 11 3CBLSF50 Switch Screen Layout LWP Sub-Menu Tabs Menu System Information Navigating the Web Interface Table 1 lists the available items on the menu. Table 1 Available Menu Items Menu Item Description Device Summary Contains tabs that allow you to: Provide a summary of the Switch’s basic ■...
  • Page 30 3: C HAPTER ONNECTING TO THE Menu Item Description SNMP Contains tabs that allow you to: Set SNMP Agent Status. ■ Add community strings. ■ Remove community strings. ■ Device Configures the device. VLAN Contains tabs that allow you to: Create a VLAN.

  • Page 31: Buttons

    Cancel – Click to discard any unsaved changes ■ Accessing the Switch using the 3Com Switch Detect Application Port Status There is an image of the Switch’s front panel in the Device View page, which indicates ports that are currently in use.

  • Page 32: Running The 3Com Switch Detect Application

    The 3Com Baseline Switch CD-ROM contains, in addi- tion to the documentation, the 3Com Switch Detect Application. To use 3Com Switch Detect to connect to the Web interface of your Switch, do the following: On the computer that is connected to your Switch (either directly or on a network that is on the same sub- net), insert the CD-ROM into its CD drive.
  • Page 33 Accessing the Switch using the 3Com Switch Detect Application Figure 13 The 3Com Switch Detect Search Screen Figure 14 The 3Com Switch Detect Discovered Devices Once your Switch or Switches have been located, you will be presented with a list (Figure 14).
  • Page 34 3: C HAPTER ONNECTING TO THE NTERFACE...

  • Page 35: Configuration Overview

    ONFIGURING THE NTERFACE This chapter provides information on how to configure the Switch’s advanced features. Topics include: Device Summary Information ■ Administration Settings ■ Configuring VLANs ■ Configuring Port Settings ■ Security ■ Monitoring ■ Configuration Overview The Switch is shipped ready for use. If you only want the Switch to function as a basic Layer 2 switch, you do not need to access the Web interface and configure the Switch.

  • Page 36: Device View

    System Contact, Serial Number, Product 3C Number, MAC Address, Software Version, Unit Uptime, Bootroom Version, and Hardware Version. Figure 15 Device View If you request for technical assistance from 3Com Support, you may be asked to print out the information on this screen. NTERFACE...

  • Page 37: Administration Settings

    DHCP server (default operation), or if this is not successful, will allocate itself an IP address. You can use the console interface or the 3Com Switch Detect application (with certain limitations) to see what IP address the Switch will use.

  • Page 38: Ipsetup

    IP address would be 169.254.1.2. The Switch also assigns the subnet mask 255.255.0.0 (default class B mask) to itself. 3Com recommends assigning an IP address to the Switch (either by using DHCP or a static IP address) to ensure successful communication between the Switch and other network devices.

  • Page 39: Restore Configuration

    Firmware Upgrade The Upgrade facility allows you to install on the Switch any new releases of system firmware that 3Com may make available. Newer versions of firmware can be downloaded via HTTP and copied to the Switch; the Switch will restart and apply the newer system firmware version.

  • Page 40: Reset

    4: C HAPTER ONFIGURING THE WITCH A progress screen displays while the upgrade is taking place. The upgrade procedure can take a few minutes, and is complete when the progress bar has finished running and the Power LED has stopped flashing and is permanently green.
  • Page 41 To ensure that unauthorized users do not access the Web interface, 3Com recommends that you set an admin password when you first configure the Switch. Even if you do not intend to actively manage the Switch, 3Com recommends that you change the password to prevent unauthorized access to your network.
  • Page 42 4: C HAPTER ONFIGURING THE WITCH Modify User This page allows you to modify a user’s access level and password. Figure 24 Modify User Screen NTERFACE Remove User To remove a user from the Switch, click on the user name, then click Remove. Figure 25 Remove User Screen...

  • Page 43: Snmp

    System Name Use these user definable fields to help identify your switch. Figure 26 System Name Screen System Time Click Administration, then System Time on the menu. This screen allows you to set the system time. You can set the Year, Month, Day, Hours, Minutes, and Seconds. Figure 27 System Time Screen Administration Settings SNMP...

  • Page 44: Configuring Vlans

    4: C HAPTER ONFIGURING THE WITCH SNMP Add This page allows you to create community strings for management access. Figure 29 SNMP Add Screen NTERFACE Configuring VLANs SNMP Remove This page allows you to remove community strings. Figure 30 SNMP Remove Screen A virtual LAN (VLAN) is a collection of network nodes that share the same collision domain, regardless of their physical location or connection point in the network.

  • Page 45: Vlan

    You can use the Switch to create VLANs to organize any group of ports into separate broadcast domains. VLANs confine broadcast traffic to the originating group and help eliminate broadcast storms in large networks. This also provides for a more secure and cleaner network environment.
  • Page 46 4: C HAPTER ONFIGURING THE WITCH Setup Use the Setup screen to create VLANs on the Switch. To propagate information about VLAN groups used on this Switch to external devices, you must specify a VLAN ID for each VLAN. Figure 31 Setup Screen Available options on the Setup screen include: VLAN ID –...
  • Page 47 Enter a set of VLANs or select all VLANs to configure, then click Select. From the drop down menu, select a VLAN to modify. Select a membership use. Available options for each port include (only one option can be associated with a single port): Tagged ■...
  • Page 48 4: C HAPTER ONFIGURING THE WITCH Enter a set of VLANs or select all VLANs to add to the rename list, then click Select. From the list of selected VLANs, choose a VLAN to rename. Enter a new VLAN name and click Apply. Remove Use the Remove screen to remove a VLAN.

  • Page 49: Forwarding Tagged/Untagged Frames

    VLAN Detail Use this screen to display detailed VLAN information. Enter a set of VLANs or select all VLANs to add to the details list, then click Select. From the drop down menu, choose a VLAN to display the associated tagged and untagged member ports. Figure 37 VLAN Detail Screen Forwarding Tagged/Untagged Frames Each port on the Switch is capable of passing tagged or...
  • Page 50 4: C HAPTER ONFIGURING THE WITCH Setting Up Two VLANs on the Same Switch Figure 38 illustrates how you can set up a simple VLAN on the Switch using desktop connections. Figure 38 Desktop VLAN Configuration Endstations Endstations in VLAN 1 in VLAN 2 Baseline Switch Server...

  • Page 51: Spanning Tree

    Figure 39 Tagged VLAN Configuration To set up the configuration shown in following: Create VLAN2 on both Switch 1 and Switch 2. You need not create VLAN1 since it exists by default. On Switch 1, set the ports that you want to be part of VLAN2 to Untagged.
  • Page 52 4: C HAPTER ONFIGURING THE WITCH tree network. The bridging device, known as the Root Bridge, generates bridge protocol data units (BPDUs) on all ports at a regular interval, known as the Hello Time. All other spanning tree-compliant devices on the network have a designated Root Port.
  • Page 53 Setup To use spanning tree, use the Setup tab and choose Enabled from the State drop down menu, fill in the setup parameters, and click Apply. Figure 41 Spanning Tree Setup Screen Port Setup This administrative tool supports the configuration of the Switch to forward, or block and discard 802.1D spanning tree BPDU packets.

  • Page 54: Igmp Snooping & Query

    4: C HAPTER ONFIGURING THE WITCH Status – Enables and disables spanning tree for the ■ port. Edged Port – Enables and disables edged port for ■ the port. Link Type – Choose between Point-to-Point, Shared, ■ or Auto for the link type. Path Cost –...

  • Page 55: Broadcast Storm

    Broadcast Storm A broadcast storm occurs when an incorrect packet is sent out on a network, causing most hosts to respond all at once and typically with wrong answers that start the process over again. Broadcast storms use substantial network bandwidth and may cause network time-outs. Two tabs are available on the Broadcast Storm page: Summary ■...

  • Page 56: Qos Voip Traffic Settings

    4: C HAPTER ONFIGURING THE WITCH Modify Use the Modify tab to set the Switch’s broadcast storm control and threshold limits. The settings include: Status – Enables and disables broadcast storm ■ control. Packet Rate Threshold – Sets the broadcast storm ■...
  • Page 57 Setup Use the Setup tab to configure the global settings for the Voice VLAN. The following options are available: Voice VLAN Status – Enable or disable Voice VLAN ■ for the switch. Voice VLAN ID – Input the Voice VLAN ID for the ■...
  • Page 58 4: C HAPTER ONFIGURING THE WITCH Port Detail Use the Port Detail tab to display the Voice VLAN information for selected ports. Figure 49 QoS Port Detail Screen OUI Summary Use the OUI Summary tab to display the list of Organizational Unique Identifier for a company and their description.

  • Page 59: Poe (3Cblsf26-Pwr Only)

    Figure 51 QoS OUI Modify Screen PoE (3CBLSF26-PWR only) Click Device, then PoE on the menu. A screen appears with two tabs that include: Summary ■ Setup ■ Configuring VLANs Summary Use the Summary tab to display the device and port PoE settings.

  • Page 60: Configuring Port Settings

    4: C HAPTER ONFIGURING THE WITCH Note that the Switch operates a port based PoE priority scheme. Lower numbered ports have priority over higher numbered ones. If you need to ensure that critical devices get power where you are likely to exceed the total power budget available, you should connect these to low port numbers and ensure these ports have their Guarantee power set.
  • Page 61 Figure 54 Port Administration Summary Screen Configuring Port Settings Detail Use the Detail tab to display detailed port setting information for a port. Figure 55 Port Administration Detail Screen Setup Use the Setup tab to configure the port settings. The following options are available: Port State –...
  • Page 62 4: C HAPTER ONFIGURING THE WITCH disabled, packets may be dropped under certain periods of high traffic. Flow control is disabled by default. Speed – Sets the speed mode of the port. Available ■ options include auto, 10, 100, and 1000. For 1000 Mbps connections, see “Speed/Duplex for 1000 Mbps Connections”...

  • Page 63: Link Aggregation

    1000 Mbps connections are always full-duplex. Half-duplex connections are only available for 10 Mbps and 100 Mbps settings. CAUTION: Before manually setting a port to full-duplex, verify that the device connected to the port is also manually set to the same speed and duplex setting.
  • Page 64 4: C HAPTER ONFIGURING THE WITCH Summary Use the Summary tab to display a list of configured link aggregation Group IDs and the associated member Ports. Figure 57 Link Aggregation Summary Screen NTERFACE Create Use the Create tab to add ports to a group membership.
  • Page 65 Modify Use the Modify tab to reassign member ports of a link aggregation group. Figure 59 Link Aggregation Modify Screen To modify a link aggregation group: Select the aggregation group to modify, then click Select. Select the ports to add to, and/or remove from, the goup.

  • Page 66: Statistics

    4: C HAPTER ONFIGURING THE WITCH Statistics The Switch allows you to display detailed statistics of one, several, or all ports. Figure 61 Port Statistics Screen To display statistics for a port: Access the Web interface. Click Port, then Statistics on the menu.

  • Page 67: X Settings

    Configure The following parameters are available: Max Retries – Sets the number of retries of sending ■ authentication requests. Timeout – Sets the interval between sending ■ authentication requests. IP Address – The IP address of the RADIUS server. ■ UDP port –...
  • Page 68 4: C HAPTER ONFIGURING THE WITCH Summary Use the Summary tab to display the 802.1X authentication settings for all the ports. Figure 63 802.1X Summary Screen Setup Use the Setup tab to configure the 802.1X authenticaion settings. The following fields are available: System Authentication –...

  • Page 69: Monitoring

    used to detect if a new device is plugged into a switch port. (Default: Disabled) Max Count – The maximum number of hosts that ■ can connect to a port when the Multi-Host operation mode is selected. (Range: 1-1024; Default: 5) Reauthentication Period –...

  • Page 70: Port Mirroring

    4: C HAPTER ONFIGURING THE WITCH entering the Switch. You can display the address table to find specific MAC addresses, or view MAC addresses associated with a specific port or VLAN. The Address Table menu includes two tabs: Summary ■ Port Summary ■...
  • Page 71 Switch takes all the traffic going in or out of the mirror port and copies it to the monitor port. CAUTION: The monitor port should have a higher bandwidth than the mirror port. Otherwise, the Switch may not be able to copy all traffic effectively during periods of high traffic.

  • Page 72: Cable Diagnostics

    4: C HAPTER ONFIGURING THE WITCH To remove a port mirror session: From the port mirror session list, select the session to remove. Click Remove. Cable Diagnostics The Switch provides a cable diagnostic utility, which helps you detect and resolve issues with the attached cables.
  • Page 73 Monitoring Diagnostics Use the Diagnostics tab to display individual port information on Test Result, Cable Fault Distance (in meters), and Last Update. Figure 70 Cable Diagnostic Screen In the example: "0,0", the first digit refers to the length of the transmit pairs. The second digit the length of the receive pairs.
  • Page 74 4: C HAPTER ONFIGURING THE WITCH NTERFACE...

  • Page 75: Upgrade

    Switch, with suggested courses of corrective action to take. If you encounter an issue that is not listed here and you cannot solve it, check the 3Com Knowledgebase at http://knowledgebase.3com.com contacting your local technical support representative.

  • Page 76: Forgotten Static Ip Address

    Switch and you need to access the Web interface, you can use the console interface. Use the summary command once you logged in to display the IP settings of the switch. Alternately, use the 3Com Detect application (page...

  • Page 77: If The Problem Persists

    If the Problem Persists If the Problem Persists If the problem persists and the unit still does not oper- ate successfully, contact your 3Com network supplier with the following information before returning the unit: Product number and serial number (printed on a ■...
  • Page 78 5: T HAPTER ROUBLESHOOTING...

  • Page 79: Register Your Product

    Contact your authorized 3Com reseller or 3Com for a complete list of the value-added services available in your area. Troubleshoot Online You will find support tools posted on the 3Com Web site at 3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at http://knowledgebase.3com.com...

  • Page 80: Telephone Technical Support And Repair

    Details about recent configuration changes, if ■ applicable To send a product directly to 3Com for repair, you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the package, will be returned to the sender unopened, at the sender’s...
  • Page 81 Vietnam Call the U.S. direct by dialing 1 201 0288, then dialing 800 763 6780 You can also obtain non-urgent support in this region at this email address apr_technical_support@3com.com Or request a return material authorization number (RMA) by +61 2 9937 5048, or send an FAX using this number: email at this email address: ap_rma_request@3com.com...
  • Page 82 Telephone Number Latin America Telephone Technical Support and Repair From the Caribbean, Central and South America, call: Antigua 1 800 988 2112 Argentina 0 810 444 3COM Aruba 1 800 998 2112 Bahamas 1 800 998 2112 Barbados 1 800 998 2112...

  • Page 83: Cblsf26 Related Standards

    ECHNICAL 3CBLSF26 Related Standards The Baseline Switch 2226-SFP Plus has been designed to the following standards: Functional IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1993 (Bridging), IEEE 802.1Q 1998 (Virtual LAN) MAC Address 8192...

  • Page 84: Cblsf26Pwr Related Standards

    B: T PPENDIX ECHNICAL NFORMATION 3CBLSF26PWR Related Standards The Baseline Switch 2426-PWR Plus has been designed to the following standards: Functional IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1993 (Bridging), IEEE 802.3af (Power over Ethernet), IEEE...

  • Page 85: Cblsf50 Related Standards

    3CBLSF50 Related Standards The Baseline Switch 2250-SFP Plus has been designed to the following standards: Functional ISO 8802-3, IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D (Bridging) MAC Address 8192 Safety UL 60950-1, EN 60950-1, CSA 22.2,...
  • Page 86 B: T PPENDIX ECHNICAL NFORMATION...

  • Page 87: Console Cable

    Console Cable A Console cable is an 8-conductor RJ45-to-DB9 cable. One end of the cable has an RJ-45 plug for connecting to the switch’s Console port, and the other end has a DB-9 socket connector for connecting to the serial port on the terminal, as shown in Figure 71.

  • Page 88: Null Modem Cable

    C: P PPENDIX Null Modem Cable RJ-45 to RS-232 25-pin PC/Terminal Cable connector: 25-pin male/female Cable connector: RJ-45 female Screen Shell Ground PC-AT Serial Cable RJ-45 to 9-pin PC-AT Serial Port Cable connector: RJ-45 female Cable connector: 9-pin female Screen Shell Shell Ground...
  • Page 89 Ethernet Port RJ-45 Pin Assignments Table 2 RJ-45 MDI Pin Assignments Pin Number 10/100 Ports configured as MDI Transmit Data + Transmit Data - Receive Data + Not assigned Not assigned Receive Data – Not assigned Not assigned Table 3 1000 Bidirectional Data A+ Bidirectional Data A-...
  • Page 90 C: P PPENDIX...
  • Page 91 CLI R This section describes using the Command Line Interface (CLI) to manage the device. The device is managed through the CLI from a direct connection to the device console port. Getting Started with the Command Line Interface Using the CLI, network managers enter configuration commands and parameters to configure the device.

  • Page 92: Logout

    D: 3C CLI R PPENDIX EFERENCE If the password is invalid, the following message appears and Login process restarts. Incorrect Password Automatic Logout The user session is automatically terminated after 30 minutes in which no device configuration activity has occurred. The following message is displayed: Session closed by automatic logout.

  • Page 93: Default Configuration

    To return to a previous menu, type "q". To return to the top level menu or abort an action, press the [Esc] key. -- Enter <CR> to continue --: Menu options: --------3Com Baseline Switch 2426-PWR Plus----------------------- - Displays Help information initialize - Reset the device to factory default, except IP.

  • Page 94: Ping

    D: 3C CLI R PPENDIX EFERENCE Ping The Ping command sends ICMP echo request packets to another node on the network. Syntax ping [IP address | URL| hostname] Parameters IP Address — IP address to ping. ■ URL — URL address to ping. ■...
  • Page 95 ipSetup The ipSetup command allows the user to define an IP address on the device either manually or via a DHCP server. Syntax ipSetup Default Configuration No default IP address is defined for interfaces. User Guidelines When the IP address is configured manually by the user, the address must be in the range 0.0.0.0 through 223.255.255.255.
  • Page 96 D: 3C CLI R PPENDIX EFERENCE Upgrade The Upgrade command starts a system download and thereby allowing a system upgrade. Syntax upgrade Default Configuration This command has no default configuration. User Guidelines The Upgrade command prompts the user for required information.
  • Page 97 Initialize The Initialize command resets the device configuration to factory defaults, retaining the current IP configuration. Syntax Initialize Default Configuration This command has no default configuration. User Guidelines The system prompts for confirmation of the request. If no response is entered within 15 seconds, timeout occurs and the command is not executed.
  • Page 98 D: 3C CLI R PPENDIX EFERENCE Logout The Logout command terminates the CLI session. Syntax logout Default Configuration This command has no default configuration. User Guidelines There are no user guidelines for this command. Example Select menu option: logout UIDE Password The Password command changes the user’s password.

  • Page 99: Fcc Statement

    VCCI Statement Pre-Standard IEEE 802.3at and Cable Temperatures 3Com recommends that you do not operate your cables above 50°C (122°F) if you are using the higher power mode capability of the 3CBLSF26PWR. This switch can deliver up to 29.6 W per port (measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR, subject to power being available), and in certain cable installations this may result in increased cable temperatures.
  • Page 101 LOSSARY 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. 1000BASE-LX IEEE 802.3z specification for Gigabit Ethernet over 9/125 micron core single-mode fiber cable.

  • Page 102: Category 3 Cables

    LOSSARY Category 3 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 3 is voice grade cable and can only be used in Ethernet networks (10BASE-T) to transmit data at speeds of up to 10 Mbps.

  • Page 103: Full Duplex

    Full Duplex A system that allows packets to be transmitted and received at the same time and, in effect, doubles the potential throughput of a link. Half Duplex A system that allows packets to be transmitted and received, but not at the same time. Half duplex is not supported for 1000 Mbps.

  • Page 104: Mac Address

    LOSSARY switches) that cover a relatively small geographic area (usually not larger than a floor or building). LANs are characterized by high transmission speeds over short distances (up to 1000 metres). Layer 2 Data Link layer in the ISO 7-Layer Data Communications Protocol.
  • Page 105 Server A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues. Small Form Factor Pluggable (SFP) Connectors are based on an open standard that enables hot swapping of various type of fiber optic and copper-based transceivers into the host equipment.
  • Page 106 LOSSARY VLAN A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network. A VLAN serves as a logical workgroup with no physical barriers, and allows users to share information and resources as though located on the same LAN.
  • Page 107 NDEX Numbers 1000BASE-LX 101 1000BASE-SX 101 1000BASE-T 101 100BASE-TX 101 10BASE-T 101 auto IP configuration 37 bandwidth 101 Baseline Switch 2848-SFP 83, 84 category 3 cables 102 category 5 cables 102 category 5e cables 102 category 6 cables 102 client 102 configuration overview 35 conventions...
  • Page 108 NDEX password changing 40 default (blank) 40 setting 36 port settings configuring 56, 60, 66 positioning the Switch 18 POST 21 protocol defined 104 repair authorization number by FAX, Asia and Pacific Rim 81 resetting to factory defaults 75 RJ-45 defined 104 server defined 105 SFP transceivers approved (supported) 22...

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