3COM 3CBLSF26H User Manual

Baseline Switch 2226-SFP Plus Baseline Switch 2426-PWR Plus Baseline Switch 2250-SFP Plus
User Guide
3CBLSF26H 3CBLSF26PWRH 3CBLSF50H
Manual Version: 6W104
www.3com.com
3Com Corporation
350 Campus Drive, Marlborough, MA, USA 01752 3064
Copyright © 2008-2009, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
3Com Corporation reserves the right to revise this documentation and to make changes in co ntent from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.
If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.
UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herei n are provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227 -7014 (June 1995) o r as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rig hts as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation
contained in, or delivered to you in conjunction with, this User Guide.
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It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to:
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Regulated Materials Statement
3Com products do not contain any hazardous or ozone-d epleting material.
Environmental Statement about the Documentation
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About This Manual
Organization
3Com Baseline Switch User Guide is organized as follows:
Chapter Contents
1 Getting Started
This chapter contains introductory information about the installation of the switch and how they can be used in your network.
2 Connecting To the Web Interface
3 Configuring the Switch This chapter introduces how to configure the switch in detail.
4 Troubleshooting
5 CLI Reference Guide
6 Obtaining Support for Your Product
7 Safety Information
8 Regulatory Notices
9 Glossary This chapter lists the main glossaries for the manual.
Conventions
This chapter introduces the setting the menu items and buttons that are available on the Web interface.
This chapter lists some issues that you may encounter while installing, using, and managing the switch, with suggested courses of corrective action to t a ke.
This chapter describes using the Command Line Interface (CLI) to manage the switch.
This chapter introduces how to get support for your product.
This chapter describes the important safety information for you product.
This chapter describes the important regulatory notices for you product.
The manual uses the following conventions:

Command conventions

Convention Description
Boldface
italic [ ] Items (keywords or arguments) in square brackets [ ] are optional.
{ x | y | ... }
[ x | y | ... ]
{ x | y | ... } *
[ x | y | ... ] *
&<1-n>
The keywords of a command line are in Boldface. Command arguments are in italic.
Alternative items are grouped in braces and separated by vertical bars. One is selected.
Optional alternative items are grouped in square brackets and separated by vertical bars. One or none is selected.
Alternative items are grouped in braces and separated by vertical bars. A minimum of one or a maximum of all can be selected.
Optional alternative items are grouped in square brackets and separated by vertical bars. Many or none can be selected.
The argument(s) before the ampersand (&) sign can be entered 1 to n times.
Convention Description
# A line starting with the # sign is comments.

GUI conventions

Convention Description
Boldface
>

Symbols

Convention Description
Obtaining Documentation
You can access the most up-to-date 3Com product documentation on the Wo rld Wide Web at this URL: http://www.3com.com.
Window names, button names, field names, and menu items are in Boldface. For example, the New User window appears; click OK.
Multi-level menus are separated by angle brackets. For example, File > Create > Folder.
Means reader be careful. Improper operation may cause data loss or damage to equipment.
Means a complementary description.
Table of Contents
1 Getting Started···········································································································································1-1
Introducing the Switch·····························································································································1-1
Overview of the Switch····················································································································1-1 Summary of Hardware Features·····································································································1-1 Front View Detail·····························································································································1-2 LED Status Indicators······················································································································1-3 System Specifications ·····················································································································1-4
Installing the Switch ································································································································1-5
Before You Begin ····························································································································1-5 Package Contents···························································································································1-5 Positioning the Switch ·····················································································································1-5 Rack-Mounting or Free-Standing····································································································1-6 Supplying Power to the Switch········································································································1-7 Checking for Correct Operation·······································································································1-8 Using SFP Transceivers··················································································································1-8 Performing Spot Checks················································································································1-10
Configuring IP Address·························································································································1-10
Automatic IP Configuration using DHCP·······················································································1-11 Manual IP Configuration················································································································1-11
2 Connecting To the Web Interface ············································································································2-1
Requirements for Accessing the Web Interface ·····················································································2-1 Choosing a Web Browser·······················································································································2-1 Default User and Password····················································································································2-2 Logging On to the Web Interface············································································································2-2 Navigating the Web Interface··················································································································2-2
Menu················································································································································2-2 Buttons ············································································································································2-5
3 Configuring the Switch ·····························································································································3-1
Configuring System Access····················································································································3-1
Defining System Access··················································································································3-1 Modifying System Access ···············································································································3-2 Removing System Access···············································································································3-3 Viewing System Access Settings····································································································3-3
Configuring IP and MAC Address Information························································································3-4
Defining IP Address·························································································································3-4 Configuring ARP Settings················································································································3-5 Configuring MAC Address Table·····································································································3-7
Configuring Port····································································································································3-11
Configuring Port Basic Settings·····································································································3-11 Configuring PoE ····························································································································3-14 Viewing Port Statistics···················································································································3-16
Configuring VLAN ·································································································································3-18
i
Creating VLANs·····························································································································3-19 Modifying VLAN·····························································································································3-19 Modifying Port VLAN Settings·······································································································3-20 Renaming VLANs··························································································································3-21 Removing VLANs··························································································································3-21 Viewing VLAN Details····················································································································3-22 Viewing VLAN Port Details············································································································3-23
Aggregating Port···································································································································3-24
Overview········································································································································3-24 LACP ·············································································································································3-24 Link Aggregation Types·················································································································3-24 Configuring Link Aggregation········································································································3-25
Configuring LACP··························································································································3-28 Configuring STP····································································································································3-29 Configuring IGMP Snooping·················································································································3-35
Defining IGMP Snooping···············································································································3-35 Configuring ACL····································································································································3-36
Configuring MAC Based ACL········································································································3-36
Configuring IP Based ACL ············································································································3-40
Configuring ACL Binding···············································································································3-44 Configuring QoS····································································································································3-46
Configuring CoS····························································································································3-46
Configuring Queue Algorithm········································································································3-47
Configuring CoS to Queue············································································································3-48
Configuring DSCP to Queue·········································································································3-49
Configuring Trust Mode·················································································································3-51
Configuring Bandwidth Settings····································································································3-51
Configuring Voice VLAN················································································································3-53 Configuring SNMP ································································································································3-58
Defining SNMP Communities········································································································3-58
Removing SNMP Communities·····································································································3-59
Defining SNMP Traps····················································································································3-59
Removing SNMP Traps·················································································································3-60 Configuring LLDP··································································································································3-61
LLDP Overview······························································································································3-61
Configuring Global LLDP Parameters···························································································3-61
Configuring Port-Level LLDP Parameters·····················································································3-62
Viewing LLDP Information·············································································································3-64 Managing Switch Security·····················································································································3-66
Defining Port-Based Authentication (802.1X) ···············································································3-66
Defining Radius Client···················································································································3-69
Configuring LDB····························································································································3-70
Configuring Broadcast Storm Control····························································································3-73 Managing System Information··············································································································3-74
Viewing Basic Settings··················································································································3-75
Configuring System Name ············································································································3-76
Configuring System Time··············································································································3-77
ii
Save Configuration························································································································3-78
Resetting the Switch······················································································································3-79 Managing System Files·························································································································3-79 Managing System Logs ························································································································3-82
Configuring Logging ······················································································································3-83
Viewing Logs·································································································································3-84 Managing Switch Diagnostics···············································································································3-85
Configuring Port Mirroring·············································································································3-85
Configuring Cable Diagnostics······································································································3-86
4 Troubleshooting ········································································································································4-1
Resetting to Factory Defaults··················································································································4-1 Forgotten Password································································································································4-1
Reset the switch······························································································································4-1
Configure a new user ······················································································································4-2 Forgotten Static IP Address····················································································································4-2 Solving LED Issues·································································································································4-2
5 CLI Reference Guide ·································································································································5-1
Getting Started with the Command Line Interface··················································································5-1
Prerequisites····································································································································5-1
Logging on to the CLI······················································································································5-1 CLI Features ···········································································································································5-2
Online Help······································································································································5-2
Command History····························································································································5-3
Error Messages·······························································································································5-3
Command Edit·································································································································5-4 CLI Configuration····································································································································5-4
display ip··········································································································································5-4
display management-vlan ···············································································································5-5
display version·································································································································5-6
ip address········································································································································5-6
ip address dhcp-alloc·······················································································································5-6
ip gateway ·······································································································································5-7
localuser ··········································································································································5-7
management-vlan····························································································································5-8
management-vlan port·····················································································································5-8
ping··················································································································································5-9
quit·················································································································································5-10
reboot·············································································································································5-10
restore ···········································································································································5-11
save···············································································································································5-11
tftp update······································································································································5-12
6 Obtaining Support for Your Product ·······································································································6-1
Register Your Product·····························································································································6-1 Purchase Value-Added Services············································································································6-1 Access Software Downloads ··················································································································6-1 Telephone Technical Support and Repair ······························································································6-1
iii
Contact Us ··············································································································································6-2
7 Safety Information·····································································································································7-1
Important Safety Information···················································································································7-1
8 Regulatory Notices····································································································································8-1
FCC Statement ·······································································································································8-1 Information to the User····························································································································8-1 ICES Statement ······································································································································8-1 CE Statement (Europe)···························································································································8-1 VCCI Statement······································································································································8-2
9 Glossary ·····················································································································································9-1
iv

1 Getting Started

z This manual applies to the Baseline Switch 2250-SFP Plus, Baseline Switch 2226-SFP Plus, and
Baseline Switch 2426-PWR Plus, which are hereinafter referred to as the switch.
z This manual takes the Web interfaces of the Baseline Switch 2426-PWR Plus as an example.
This chapter contains introductory information about the installation of the switch and how they can be used in your network. It covers the following topics:
z Introducing the Switch z Installing the Switch z Configuring IP Address

Introducing the Switch

This chapter covers summary information about the hardwa re and the following topics:
z Overview of the Switch z Summary of Hardware Features z Front View Detail z LED Status Indicators z System Specifications
Overview of the Switch
z The Baseline Switch 2226-SFP Plus is a versatile, easy-to-use configurable switch. z The Baseline Switch 2426-PWR Plus is a versatile, easy-to-use configurable P ower-over-Ethern et
(PoE) Switch.
z The Baseline Switch 2250-SFP Plus is a versatile, easy-to-use configurable switch.
Each Switch is ideal for users who want the high-speed performan ce of 10/100 switching with the added functionality of Gigabit copper and fiber links, but do not need sophisticated management capabilities. The Switch is shipped ready for use. No configuration is necessary.
Summary of Hardware Features
Table 1-1 Summarizes the hardware features supported by the Swi t ch.
Table 1-1 Hardware Features
Feature Description
Addresses Up to 8192 supported. Auto-negotiation Supported on all ports.
1-1
Feature Description
Forwarding Modes
Store and Forward.
Duplex Modes Half and full duplex on all front panel ports.
Auto MDI/MDIX
Supported on all ports. If fiber SFP transceivers are used,
Auto MDIX is not supported. Flow Control In full duplex operation all ports are supported. Traffic Prioritization Four traffic queues per port.
10/100 Mbps ports.
Each port automatically determines the speed and duplex Ethernet Ports
mode of the connected equipment and provides a suitable
switched connection. The 10/100 Mbps ports can operate in
either half-duplex or full-duplex mode.
The 2 Gigabit combo ports support fiber Gigabit Ethernet
short-wave (SX) and long-wave (LX) SFP transceivers in
any combination. This offers you the flexibility of using SFP Gigabit Combo Ports
transceivers to provide connectivity between the Switch and
a 1000 Mbps core network.
When an SFP port is in operation, the corresponding
1000BASE-T port is disabled. The 1000 Mbps connections
can only operate in full duplex mode. Mounting 19-inch rack or standalone mounting. Fanless design (supported by
Baseline Switch 2226-SFP Plus and Baseline Switch 2250-SFP Plus)
PoE (Only supported by Baseline Switch 2426-PWR Plus)
Front View Detail
Figure 1-1 shows the front panel of the Baseline Switch 2226-SFP Plus 26-Port unit. Figure 1-1 Baseline Switch 2226-SFP Plus 26-Port—front panel.
Silent operation whether used in a rack or desktop situation.
Each RJ-45 port supports the IEEE 802.3af PoE standard.
Any 802.3af compliant device attached to a port can directly
draw power from the switch over the Ethernet cable without
requiring its own separate power source. This capability
gives network administrators centralized power control for
devices such as IP phones and wireless access points,
which translates into greater network availability.
Figure 1-2 Shows the front panel of the Baseline Switch 2426-PWR Plus 26-Port unit. Figure 1-2 Baseline Switch 2426-PWR Plus 26-Port—front panel.
Figure 1-3 shows the front panel of the Baseline Switch 2250-SFP Plus 50-Port unit.
1-2
Figure 1-3 Baseline Switch 2250-SFP Plus 50-Port—front panel.
LED Status Indicators
The Switch provides LED indicators on the front panel f or your convenience to monitor the switch. Table 1-2 describes the meanings of the LEDs.
Table 1-2 Description on the LEDs of the Switch
LED Status Description
Power
The switch starts normally. The LED flashes
Green
when the system is performing Power-On
Self-Test (POST). Yellow The system has failed the POST. OFF The switch is powered off.
Link/Activity
10/100BASE-T port
10/100/1000BAS E-T port
Green
Yellow
OFF
Green
Yellow
The port works at the rate of 100 Mbps; the
LED flashes quickly when the port is sending
or receiving data.
The port works at the rate of 10 Mbps; the
LED flashes quickly when the port is sending
or receiving data.
The link has not been established, either
nothing is connected to the port, or there is a
problem:
z Check that the attached device is powered
on.
z Check that the cable is the correct type
and is not faulty.
If these checks do not identify the cause of the
problem, it may be that the unit or the device
connected to the port is faulty. Contact your
supplier for further advice.
The port works at the rate of 1000 Mbps; the
LED flashes quickly when the port is sending
or receiving data.
The port works at the rate of 10/100 Mbps; the
LED flashes quickly when the port is sending
or receiving data.
1-3
LED Status Description
The link has not been established, either
nothing is connected to the port, or there is a
problem:
z Check that the attached device is powered
on.
z Check that the cable or fiber is the correct
OFF
type and is not faulty.
z For fiber connections, ensure that the
receive (RX) and transmit (TX) cable connectors are not swapped.
If these checks do not identify the cause of the
problem, it may be that the unit or the device
connected to the port is faulty. Contact your
supplier for further advice.
Duplex
10/100/1000BAS E-T port
Module Active SFP port
PoE Power (Only supported by Baseline Switch 2426-PWR Plus)
System Specifications
Table 1-3 contains the system specifications of the Switch.
Table 1-3 System specifications of the Switch.
Specification 2226-SFP 2426-PWR 2250-SFP
Physical dimensions (H×W×D)
Yellow The port is in full duplex mode.
OFF
Green The SFP module is inserted.
OFF
Green
OFF
44 mm×440 mm×170 mm
The port is not connected, or is in half duplex
mode.
The SFP module is not inserted or is not
recognized.
The port is supplying power to the device
connected to it.
The port is not supply power to the device
connected to it or not connected.
44 mm×440 mm×238 mm
44 mm×440 mm×238
mm Weight 1.6 kg 3.2 kg 2.9 kg Console port 1 1 1
24 (Each port can
Ethernet port 24
provide a power
48
supply of 25 W)
Gigabit Combo port 2 2 2
AC Input voltage
Power consumption (full load)
Rated voltage range: 100–240V AC, 50/60 Hz
17 W 205 W 26 W
Rated voltage range: 100–240V AC, 50/60 Hz
Rated voltage range:
100–240V AC, 50/60
Hz
Operating temperature 0°C to 40°C (32°F to 113°F) Storage temperature –10°C to +70°C (14°F to 158°F)
1-4
Specification 2226-SFP 2426-PWR 2250-SFP
Operating humidity (noncondensing)
Storage humidity (noncondensing)

Installing the Switch

This section contains information that you need to install and set up the switch. It covers the following topics:
z Before You Begin z Package Contents z Positioning the Switch z Rack-Mounting or Free-Standing z Supplying Power to the Switch z Checking for Correct Operation z Using SFP Transceivers z Performing Spot Checks
20% to 85%
10% to 90%
Before You Begin
Before installing or removing any components from the switch or carrying out any maintenance procedures, read the safety information provided in
Package Contents
The Baseline Switch packaging contains the following for all units:
z One product sealed in a plastic bag z One CD z One Safety and Regulatory Information manual z One warranty card z One Mounting Kit z One DB-9 to RJ-45 cable
Positioning the Switch
The switch is suitable for use in an office environment where it can be free-standing or mounted in a standard 19-inch equipment rack.
Alternatively, the switch can be rack-mounted in a wiring closet or equipment room. A mounting kit, containing two mounting brackets and four screws, is supplied with the swit ch.
Safety Information of this guide.
When deciding where to position the switch, ensure that:
z It is accessible and cables can be connected easily. z Cabling is away from sources of electrical noise. These include lift shafts, microwave ovens, and
air conditioning units. Electromagnetic fields can interfere with the signals on copper cabling and introduce errors, therefore slowing down your network.
z Water or moisture cannot enter the case of the unit.
1-5
z Air flow around the unit and through the vents on the side of the case is not restricted (3Com
recommends that you provide a minimum of 25 mm (1 in.) clearance).
z The air is as free from dust as possible. z Temperature operating limits are not likely to be exceeded. It is recommended that the unit is
installed in a clean, air conditioned environment.
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.
Rack-Mounting or Free-Standing
The unit can be mounted in a 19-inch equipment rack using the mounting kit or it can be free standing. Do not place objects on top of the unit or stack.
If installing the switch in a free-standing stack of different size Baseline or Super stack 3 units, the smaller units must be installed above the larger ones. Do not have a free-standing stack of more than six units.
Using the Mounting Kit
The switch is supplied with two mounting brackets and four screws. These are used for rack mounting the unit. When mounting the unit, you should take note of the guidelines given in
Positioning the Switch.
The switch is 1U (1.7 inches) high and will fit in a standard 19-inch rack.
Disconnect all cables from the unit before continuing. Remove the self-adhesive pads from the underside of unit, if already fitted.
To rack-mount the switch:
1) Place the unit the right way up on a hard, flat surface with the front facing towards you.
2) Locate a mounting bracket over the mounting holes on one side of the unit.
3) Insert the two screws supplied in the mounting kit and fully tighten with a suitable screwdriver.
1-6
Figure 1-4 Rack Mounting the Unit
4) Repeat steps 2 and 3 for the other side of the unit.
5) Insert the unit into the 19-inch rack and secure with suitable screws (not provided).
6) Reconnect the cables.
Placing Units On Top of Each Other
If the switch units are free-standing, up to six units can be placed one on top of the other. If you are mixing a variety of Baseline and Super Stack units, the smaller units must be positioned at the top.
If you are placing switch units one on top of the other, you must use the self-adhesive rubber pads supplied. Apply the pads to the underside of each switch, sticking one in the marked area at each corner.
Place the switch units on top of each other, ensuring that the pads of the upper unit line up with the recesses of the lower unit.
Supplying Power to the Switch
Power problems can be the cause of serious failures and downtime in your network. 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.
The unit is intended to be grounded. Ensure it is connected to earth ground during normal use. Installi ng proper grounding helps to avoid damage from lightning and power surges.
Before powering on the switch, verify that the network cables and the power cable are securely connected.
To power on the switch:
1) Plug the power cord into the power socket on the rear panel of the switch.
2) Plug the other end of the power cord into a power outlet.
1-7
Checking for Correct Operation
After you power on the switch, it automatically performs a power-on self-test (POST). During POST, the Power LED on the front panel of the switch flashes green.
When POST is complete, the Power LED turns green. If the Power LED turns yellow after POST, it means that POST failed and the switch has entered fail-safe mode.
The following summarizes the possible colors for the Power LED after POST.
Table 1-4 Summarizes the possible colors for the Power LED after POST
Status Meaning
Green The unit is powered on and ready for use.
Yellow
Power-on self-test or loop back test failed. The switch is in fail-safe mode. This can happen if a port or ports fail when the switch was powered on.
The unit is not receiving power.
Off
z Verify that the power cord is connected correctly, and then try powering on
the switch again
z If the switch still does not operate, contact your 3Com network supplier
If POST fails, try the following:
z Power off the switch, and then power it on again. Check the Power LED and see if POST was
successfully completed.
z Reset the switch. See Resetting to Factory Defaults.
Resetting the switch to its factory default erases all your settings. You will need to reconfig ure the switch after you reset it.
If these do not resolve the issue:
z 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.
z Contact your 3Com network supplier for assistance.
Using SFP Transceivers
The following sections describe how to insert an SFP transceiver into an SFP slot.
SFP transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any SFP port without having to power down the switch.
1-8
Approved SFP Transceivers
The following list of approved SFP transceivers is correct at the time of publication:
z 3CSFP91 SFP (SX) z 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 on the switch. If you insert an SFP transceiver that is not supported, the switch will not recognize it.
Inserting an SFP Transceiver
To be recognized as valid, the SFP transceiver must have the following characteristics: 1000BASE-SX or 1000BASE-LX media type:
z 1000BASE-SX SFP transceiver
Use this transceiver to connect the switch directly to a multimode fiber-optic cable.
z 1000BASE-LX SFP transceiver
Use this transceiver to connect the switch directly to a single mode fiber-optic cable or to multi-mode fiber using a conditioned launch cable.
To activate the SFP port:
1) Hold the transceiver so that the fiber connector is toward you and the product label is visible, as shown in
Figure 1-5.Ensure the wire release lever is closed (in the upright position).
Figure 1-5 Inserting an SFP Transceiver
Product label
Product label
Wire release lever
Wire release lever
Suitable slot on
Suitable slot on host Switch
host Switch
2) Gently slide the transceiver into the SFP slot until it clicks into place.
1-9
SFP transceivers are keyed and can be properly inserted only one way. If the transceiver do es not click when you insert it, remove it, turn it over, and reinsert it.
3) Remove the plastic protective cover, if fitted.
4) Connect the fiber cable.
5) Attach a male duplex LC connector on the network cable into the duplex LC connector on the transceiver.
6) Connect the other end of the cable to a device fitted with an appropriate Gigabit Ethernet connection.
7) Check the Module Active LEDs on the front of the switch to ensure that the SFP transceiver is operating correctly.
Removing an SFP Transceiver
To remove an SFP transceiver:
1) Disconnect the cable from the transceiver.
2) Move the wire release lever downwards until it is pointing toward you.
3) Pull the wire release lever toward you to release the catch mechanism.
The SFP transceiver should slide out easily.
Performing Spot Checks
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 in
Table 1-5 Items to Check
Item Operation
Where possible, check that the cooling fan is operating by listening to the unit.
Cooling fan
Cabling
The fan is fitted near to the front right hand side of the unit (when viewed from the front).
Check that all external cabling connections are secure and that no cables are pulled taut.
Table 1-5.

Configuring IP Address

The switch’s IP configuration is determined automatically using DHCP, or manually using values you assign.
By default, the switch will use its default IP information. The default IP address is 169.254.xxx.xxx. If the MAC address is 08004E000102, the IP address would be 169.254.1.2.
1-10
Automatic IP Configuration using DHCP
When you use the automatic IP configuration method, the switch tries to obtain it s IP information without requesting user intervention from a DHCP server on the network.
You should use the automatic IP configuration method if:
z Your network uses DHCP to allocate IP information, or z Flexibility is needed. If the switch is deployed onto a different subnet, it will automatically
reconfigure itself with an appropriate IP address, instead of you ha ving to manually reconfigure the switch.
You can use ip address dhcp-alloc command to define automatic IP configuration method and use display ip command to view the automatically allocated IP Information through the Console Port (see CLI Reference Guide).
Manual IP Configuration
When you configure the IP information manually, the switch remembers the information that you enter until you change it again.
You should use the manual IP configuration method if:
z You do not have a DHCP server on your network, or z You want to remove the risk of the IP address ever changing, or z Your DHCP server does not allow you to allocate static IP addresses.
For most installations, 3Com recommends that you configure the switch IP information manually. This makes management simpler and more reliable as it is not dependent on a DHCP server, and eliminate s the risk of the IP address changing.
You can use ip address command to configure the static IP for your switch through the Console Port
CLI Reference Guide).
(see
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2 Connecting To the Web Interface

The switch has a built-in Web interface that you can use to set the user password, change the IP address that is assigned to the switch, and configure its advanced setting s.
This chapter introduces the setting the menu items and buttons that are available on the Web interface. The following topics are covered:
z Requirements for Accessing the Web Interface z Choosing a Web Browser z Default User and Password z Logging On to the Web Interface z Navigating the Web Interface

Requirements for Accessing the Web Interface

To connect to the Web interface, you need the following:
z Ensure that the switch is connected to the network using a Category 5 twisted pair Ethernet cable
with RJ-45 connectors.
z Ensure that you know your switch’s IP address. See Configuring IP Address. z Check that your management workstation is on the same subnet as your switch. z Choose a suitable Web browser.

Choosing a Web Browser

To display the Web interface correctly, use one of the following Web browsers and platform combinations:
Table 2-1 Supported Web Browsers and Platforms
Platform
Browser
Internet Explorer 6 Yes Yes Yes Internet Explorer 7 Yes Yes Yes Firefox 1.5 Yes Yes Yes
Windows 2000 Windows XP Windows Vista
Firefox 2 Yes Yes Yes Netscape 8 Yes Yes Yes
For the browser to operate the Web interface correct ly , JavaS cript and Cascading S tyle Sheets must b e enabled on your browser. These features are enabled on a browser by default. You will only need to enable them if you have changed your browser settings.
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Default User and Password

If you intend to manage the switch or to change the default password, you must log in with a v alid u ser name and password. The switch has one default user name. The default user is listed in
Table 2-2 Default User and Password
User Name Default Password Access Level
Table 2-2.
admin -

Logging On to the Web Interface

To log on to the Web interface, do the following:
1) Open your Web browser and enter the IP address of the switch that you wish to manage in the URL locator (For example, in the following format: http://xxx.xxx.xxx.xxx). The Login Page appears:
Figure 2-1 Login Page
Management: The user can access and change all manageable parameters
2) Enter admin as your user name and leave the password field blank.
3) Click Login, The main Web interface page is displayed.

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. When you click an item on the menu, the related screen appears in the main part of the interface. Some menu items will give you sub-menu tabs to choose from.
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Figure 2-2 Switch Screen Layout
Table 2-3 Available Menu Items
Menu Item Description
Device Summary
Save Configuration
Administration
Contains tabs that allow you to:
z Provide a summary of the switch’s basic settings and
versions of current components.
z Display the description for each color coded port.
IP Setup
ARP Setting
Saves the switch’s configuration Allows you to setup, modify, or view the IP configuration
parameters. Allows a host to communicate with other hosts when only the
IP address of its neighbors is known. Backup & Restore Allows you to backup and restore the switch’s configuration. Firmware
Upgrade
Allows you to upgrade the current firmware via HTTP
Reset Allows you to reset the switch to factory default settings
Contains tabs that allow you to:
z Display user summary information.
System Access
z Create a new user.
z Modify existing users.
z Remove existing users.
System Name Allows you to set the system name. System Time Allows you to set the system time.
Logging
System Logs record and manage events and report errors
and informational messages
Contains tabs that allow you to: SNMP
z Add community strings.
z Remove community strings.
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Menu Item Description
Contains tabs that allow you to:
z Create a VLAN.
z Modify a VLAN.
VLAN
z Modify VLAN membership for a port.
z Rename a VLAN.
z Remove a VLAN.
z Display VLAN membership for a port.
z Display VLAN information.
Allows you to configure a Spanning Tree Protocol.
Contains tabs that allow you to: Spanning Tree
z Display selected spanning tree information for every port.
z Display individual port spanning tree information.
z Modify the spanning tree settings for a port.
Device
IGMP Snooping
Allows you to enable or disable IGMP snooping and IGMP
query modes. Broadcast Storm Allows you to enable or disable broadcast control. ACL Configures the ACL. MAC Based ACL Configures MAC Based ACL on the switch. IP Based ACL Configures IP Based ACL on the switch. ACL Binding Configures ACL Binding on the switch. QoS Configures QoS settings.
Contains tabs that allow you to: CoS
z Displays CoS default settings assigned to ports.
z Defines CoS
Queue Configures Queue Setting. CoS to Queue Displays and defines CoS to Queue. DSCP to Queue Contains fields for mapping DSCP settings to traffic queues. Trust Configures Trust Settings. Bandwidth Displays and defines Bandwidth Settings.
Contains tabs that allow you to:
z Display Voice VLAN summary.
VoIP Traffic Setting
z Configure Voice VLAN global settings.
z Configure Voice VLAN port settings.
z Display port information for Voice VLAN.
z Display OUI summary.
z Add or remove OUI.
LLDP Allows you to configure LLDP global and port settings.
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Menu Item Description
Contains tabs that allow you to: Administration
z Display selected port information for the entire switch.
z Display individual port information.
z Modify the port settings.
Contains tabs that allow you to:
z Display link aggregation summary.
Link Aggregation
Port
z Create an aggregation group.
z Modify the port memberships.
z Remove an aggregation group.
LACP Configures the LACP. Statistics Display statistics for a selected port.
Security
Monitoring
Help
PoE(Only supported by 2426-PWR Plus)
Contains tabs that allow you to:
z Display PoE summary.
z Configure PoE settings.
Contains tabs that allow you to: Radius Client
z Display Radius Client information.
z Configure Radius Client settings and set authentication
parameters.
Contains tabs that allow you to:
802.1X
z Display system authentication summary.
z Display detailed information per port.
z Configure system authentication settings.
Address Table Displays MAC address table information for ports and VLANs. Port Mirroring Monitor traffic going in or out of ports.
Contains tabs that allow you to: Cable
Diagnostics
z Display selected cable diagnostics information for all
ports.
z Display all cable diagnostics information for a single port.
Displays 3Com contact information and describes how to use
the online help system.
Logout
Buttons
Depending on the screen that is currently displayed, the following buttons may appear:
z Apply: Click to apply any changes that you have made. z Cancel: Click to discard any unsaved changes. z Select All: Allows the user to select all ports. z Select None: Removes the ports selected. z Help: Click to display the context-sensitive help information for the screen that is currently
Allows you to securely log off the Web interface.
displayed. The help pages provide information on the tasks that you can perform on each screen.
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3 Configuring the Switch

Configuring System Access

Network administrators can define user name, password, and access level for users using the System Access Interface. The Multi-Session Web feature is enabled on switch and allows 10 users to be created and access the switch concurrently. Access levels provide read or read/write permissions to users for configuring the switch. Login information is managed in the local dat abase. A unique password is required of each user. Two access le vels exist on the Web Interface:
z Management access level: Provides the user with read/write access rights. There is always one
management level user configured for the switch.
z Monitor access level: Provides the user with read-only system access rights.
This section contains the following topics:
z Defining System Access z Modifying System Access z Removing System Access z Viewing System Access Settings
To ensure that unauthorized users do not access the Web interface, 3Com reco mmends that you set an admin password when you first configure the switch.
Defining System Access
The System Access Setup Page allows network administrators to define users, passwords, and access levels for users using the System Access Interface.
Click Administration > System Access > Setup. The System Access Setup Page opens. Figure 3-1 System Access Setup Page
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The System Access Setup Page contains the following fields:
Table 3-1 System Access Setup Page item description
Item Description
User Name Defines the user name. The default value is admin.
Access Level
Password Defines the local user password. The default is blank. Confirm Password Verifies the password.
Modifying System Access
The System Access Modify Page allows network administrators to modify users, passwords, and access levels for users using the System Access Interface.
Defines the user access level. The lowest user access level is Moni tor and the highest is Management.
z Management: Provides the user with read and write access right s. This
is the default.
z Monitor: Provides the user with read access rights.
Click Administration > System Access > Modify. The System Access Modify Page opens. Figure 3-2 System Access Modify Page
The System Access Modif y Page contains the following fields:
Table 3-2 System Access Modify Page item description
Item Description
Defines the user access level. The lowest user access level is Moni tor and
Access Level
the highest is Management.
z Management: Provides the user with read and write access rights. z Monitor: Provides the user with read access rights.
Password Modify Enables modifying a password for an existing user. Password Modifies the local user password. Confirm Password Verifies the password.
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Removing System Access
The System Access Remove Page allows network administrators to remove users from the System Access Interface.
The last user with management access may not be deleted.
Click Administration > System Access > Remove. The System Access Remove Page opens.
Figure 3-3 System Access Remove Page
Viewing System Access Settings
The System Access Summary Page displays the current users and access levels define d on the switch. Click Administration > System Access > Summary. The System Access Summary Page opens. Figure 3-4 System Access Summary Page
The System Access Summary Page contains the following fields:
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Table 3-3 System Access Summary Page item description
Item Description
User Name Displays the user name. Access Level Displays the user access level.

Configuring IP and MAC Address Information

This section contains information for defining IP interface s, and in cludes the following sections:
z Defining IP Address z Configuring ARP Settings z Configuring MAC Address Table
Defining IP Address
To enable the other devices on the network to communicate with the switch, you need to assign an IP address to it: either by DHCP or by assigning a static IP address.
Click Administration > IP Setup. The IP Setup Page open s. Figure 3-5 IP Setup Page
The IP Setup Page contains the following fields:
Table 3-4 IP Setup Page item description
Item Description
Defines whether the IP address is configured staticall y or dynamically. The possible field values are:
Configuration Method
z Static: Specifies that the IP address is configured by the user. z DHCP: Specifies that the IP address is dynamically obtained by DHCP
Server.
IP Address
Defines the IP address. The default value is 169.254.xxx.xxx. If the MAC
address is 08004E000102, the IP address would be 169.254.1.2. Subnet Mask Defines the subnet mask. The default value is 255.255.0.0. Gateway Defines the gateway address. The default value is blank.
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Configuring ARP Settings
The Address Resolution Protocol (ARP) converts IP addresses into physical addresses, and maps the IP address to a MAC address. ARP allows a host to communicate with other hosts when only the IP addresses of its neighbors are known.
This section includes the following topics:
z Defining ARP Settings z Removing ARP Entries z Viewing ARP Settings
Defining ARP Settings
The ARP Settings Setup Page allows network managers to define ARP parameters for specific interfaces.
Click Administration > ARP Settings > Setup. Th e ARP Settings Setup Page opens. Figure 3-6 ARP Settings Setup Page
The ARP Settings Setup Page contains the following fields:
Table 3-5 ARP Settings Setup Page item description
Item Description
Interface
IP Address
MAC Address
Indicates the management VLAN (VLAN 1) for which ARP parameters are
defined.
Defines the static IP address, which is associated with the static MAC
address.
Defines the static MAC address, which is associated with the static IP
address.
Specifies the aging time for dynamic ARP entries. After the ARP Entry ARP Entry Age Out
Age, dynamic ARP entries are deleted from the table. The range is
1-40000000. The default value is 1200 seconds.
Removing ARP Entries
The ARP Entries Remove Page provides parameters for removing ARP entries from the ARP Table. Click Administration > ARP Settings > Remove. The ARP Entries Remove Page opens.
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Figure 3-7 ARP Entries Remove Page
The ARP Entries Remove Page contains the following fields:
Table 3-6 ARP Entries Remove Page item description
Item Description
Specifies the types of ARP entries that are cleared. The possible values
are: Clear ARP Table
Entries
z None: Maintains the ARP entries.
z All: Clears all ARP entries.
z Dynamic: Clears only dynamic ARP entries.
z Static: Clears only static ARP entries.
Interface Indicates the VLAN for which ARP parameters are defined. IP Address Indicates the IP address which is associated with the MAC address.
MAC Address
Displays the MAC address, which is associated in the ARP table with the
IP address.
Displays the ARP table entry type. Possible field values are: Status
z Dynamic: Indicates the ARP entry is learned dynamically.
z Static: Indicates the ARP entry is a static entry.
Viewing ARP Settings
The ARP Settings Summary Page displays the current ARP settings. Click Administration > ARP Settings > Summary. The ARP Settings Summary Page opens.
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