®
SuperStack 3
Switch 4400
Getting Started Guide
3C17203
3C17204
Part No. DUA1720-3AAA02
Published August 2001
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ABOUT THIS GUIDE
Related Documentation
9
LEDs 15
Switch 4400 — Rear View Detail 17
Power Socket 17
Package Contents 20
Choosing a Suitable Site 20
Rack-mounting 21
Placing Units On Top of Each Other 22
Stacking Units 22
The Power-up Sequence 23
Powering-up the Switch 4400 23
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Setting Up Web Interface Management 42
Pre-requisites 42
Web Management Over the Network 42
Changing Default Passwords 44
4 PROBLEM SOLVING
Solving Problems Indicated by LEDs 46
Solving Hardware Problems 47
Solving Communication Problems 48
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PC-AT Serial Cable 57
RJ-45 Pin Assignments 58
Switch 4400
(24-port) 61
Switch 4400
(48-port) 63
Online Technical Services 65
World Wide Web Site 65
3Com FTP Site 66
Support from Your Network Supplier 66
Returning Products for Repair 68
INDEX
REGULATORY NOTICES
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ABOUT THIS GUIDE
This guide provides all the information you need to install and use a
SuperStack® 3 Switch 4400 in its default state.
This guide is intended for use with both Switch 4400 models:
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3C17203 — 24 10BASE-T/100BASE-TX ports
3C17204 — 48 10BASE-T/100BASE-TX ports
All procedures described in this guide apply to both models.
The guide is intended for use by network administrators who are
responsible for installing and setting up network equipment;
consequently, it assumes a basic working knowledge of LANs (Local Area
Networks).
If the information in the release notes that are shipped with your product
differ from the information in this guide, follow the instructions in the
release notes.
Most user guides and release notes are available in Adobe Acrobat
Reader Portable Document Format (PDF) or HTML on the 3Com
World Wide Web site:
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8
ABOUT THIS GUIDE
Conventions
Table 1 and Table 2 list conventions that are used throughout this guide.
Table 1 Notice Icons
Icon
Notice Type
Description
Information note Information that describes important features or
instructions
Caution
Information that alerts you to potential loss of data or
potential damage to an application, system, or device
Warning
Information that alerts you to potential personal injury
Table 2 Text Conventions
Convention Description
Screen displays This typeface represents information as it appears on the
screen.
Syntax
The word “syntax” means that you must evaluate the syntax
provided and then supply the appropriate values for the
placeholders that appear in angle brackets. Example:
To change your password, use the following syntax:
system password <password>
In this example, you must supply a password for <password>.
Commands
The word “command” means that you must enter the
command exactly as shown and then press Return or Enter.
Commands appear in bold. Example:
To display port information, enter the following command:
bridge port detail
The words “enter”
and “type”
When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
Keyboard key names If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
Words in italics
Italics are used to:
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Emphasize a point.
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Denote a new term at the place where it is defined in the
text.
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Identify menu names, menu commands, and software
button names. Examples:
From the Help menu, select Contents.
Click OK.
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Related Documentation
9
Related
Documentation
In addition to this guide, each Switch documentation set includes the
following:
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SuperStack 3 Switch Implementation Guide
This guide contains information on the features supported by your
Switch and how they can be used to optimize your network.
SuperStack 3 Switch Management Quick Reference Guide
This guide contains a summary of the web interface and command
line interface commands for the Switch.
SuperStack 3 Switch Management Interface Reference Guide
This guide provides detailed information about the web interface and
command line interface that enable you to manage the Switch. It is
supplied in HTML format on the CD-ROM that accompanies the
Switch.
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Release Notes
These notes provide information about the current software release,
including new features, modifications, and known problems.
There are other publications you may find useful, such as:
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Documentation accompanying the Advanced Redundant Power
system.
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Documentation accompanying the Expansion Modules.
Documentation accompanying 3Com Network Supervisor. This is
supplied on the CD-ROM that accompanies the Switch.
Accessing Online The CD-ROM supplied with your Switch contains the following online
Documentation documentation:
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SuperStack 3 Switch Implementation Guide (PDF format)
SuperStack 3 Switch Management Interface Reference Guide (HTML
format)
1 To access the documentation insert the CD-ROM into your CD-ROM
drive. If your PC has auto-run enabled, a splash screen will be displayed
automatically.
2 Select the Documentation section from the contents page.
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10
ABOUT THIS GUIDE
If the online documentation is to be accessed from a local drive or server,
you will need to access the CD-ROM contents via the root directory and
copy the files from the CD-ROM to a suitable directory.
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The HTML Reference Guide is stored in the Docs/reference directory
on the CD-ROM. The documentation is accessed using the
contents.htm file.
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The PDF Implementation Guide is stored in the
Docs/implementationdirectory of the CD-ROM.
3Com recommends that you copy the Docs/reference directory as a
whole to maintain the structure of the files.
Product
Registration
You can register your SuperStack 3 Switch 4400 on the 3Com Web site:
Documentation
Comments
Your suggestions are very important to us. They will help make our
documentation more useful to you. Please e-mail comments about this
document to 3Com at:
Please include the following information when commenting:
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Document title
Document part number (on the title page)
Page number (if appropriate)
Example:
Part Number DUA 1720-3AAA0x
SuperStack 3 Switch 4400 Getting Started Guide
Page 21
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INTRODUCING THE
SUPERSTACK 3 SWITCH 4400
1
and how it can be used in your network. It covers summaries of hardware
and software features and also the following topics:
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About the Switch 4400
Switch 4400 — Front View Detail
Switch 4400 — Rear View Detail
Default Settings
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12
CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
About the Switch
4400
high-performance work groups with a backbone to server connection.
The Switch 4400 allows Cascade, Gigabit Ethernet or Fast Ethernet Fiber
connections when expansion modules are installed in the expansion slots
on the rear of the unit. You can also add the Switch 4400 to any
SuperStack® system as your network grows.
Summary of Table 3 summarizes the hardware features that are supported by the
Hardware Features Switch 4400.
Table 3 Hardware features
Feature
Switch 4400
Addresses
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Up to 8000 supported
Up to 64 permanent entries
Supported on all ports
Auto MDI/MDI-X
Auto-negotiation
Forwarding Modes
Duplex Modes
Store and Forward
Half and full duplex on all front panel ports
In full duplex operation all ports are supported
Supported on all ports
Flow Control
Smart Auto-sensing
Traffic Prioritization
Supported (IEEE 802.ID): 4 queues per port
Ethernet and Fast Ethernet Auto-negotiating 10BASE-T/100BASE-TX ports
Ports
RPS Support
Connects to SuperStack 3 Advanced Redundant
Power System (ARPS) (3C16071B)
Mounting
19-inch rack or stand-alone mounting
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About the Switch 4400
13
Summary of Software Table 4 summarizes the software features that are supported by the
Features Switch 4400.
Table 4 Software features
Feature
Switch 4400
Automatic IP
Configuration
Supported
Resilient Links
Supported
Aggregated Links
Supported stack-wide
Broadcast Storm Control Supported
Virtual LANs (VLANs)
Support for up to 60 VLANs using the IEEE 802.1Q
standard
Multicast Filtering
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128 Multicast filter groups supported
IGMP filtering supported
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Spanning Tree Protocol
(802.1D-1998)
Supported
Roving Analysis Port
Supported
Supported
Rapid Spanning Tree
Protocol (802.1w)
Webcache Support
Quality of Service (QoS)
RMON
Supported
Supported
Four groups supported: Statistics, History, Alarms,
Event
Email Notification of
Events
Supported
Management
Web interface, command line interface, and SNMP
supported
Port Security
Disconnect Unauthorized Device (DUD) supported
For information about managing the software features of the Switch,
refer to the “SuperStack 3 Switch Management Interface Reference
Guide” on the CD-ROM that accompanies the Switch.
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14
CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
Switch 4400 —
Front View Detail
Figure 1 Switch 4400 (24-port) — front view
Figure 2 Switch 4400 (48-port) — front view
WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot
be used as standard traditional telephone sockets, or to connect the unit to a
traditional PBX or public telephone network. Only connect RJ-45 data
connectors, network telephony systems, or network telephones to these
sockets.
Either shielded or unshielded data cables with shielded or unshielded
jacks can be connected to these data sockets.
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Switch 4400 — Front View Detail
15
100BASE-TX Ports configured as Auto MDIX (cross-over). These ports automatically provide
ports to 10BASE-T half duplex, 10BASE-T full duplex, 100BASE-TX half
duplex or 100BASE-TX full duplex. The maximum segment length is
100 m (328 ft) over Category 5 twisted pair cable.
LEDs Table 5 lists LEDs visible on the front of the Switch, and how to read their
status according to color. For information on using the LEDs for problem
solving, see “Solving Problems Indicated by LEDs” on page 46.
Table 5 LED behavior
LED
Color
Indicates
Port Status LEDs
Packet Green
Full duplex packets are being transmitted/received on the
port.
Yellow
Half duplex packets are being transmitted/received on the
port.
Off
No packets are being transmitted/received on the port.
Status Green
A high speed (100 Mbps) link is present, and the port is
enabled.
Green flashing A high speed (100 Mbps) link is present, but the port is
disabled.
Yellow
A low speed (10 Mbps) link is present, and the port is
enabled.
Yellow flashing A low speed (10 Mbps) link is present, but the port is
disabled.
Off
No link is present.
Module Packet LEDs
Green
Yellow
Full duplex activity being received or transmitted
Half duplex activity being received or transmitted
No activity
Off
Module Status LEDs
Green
The Module is installed and supported. The Link Status has
been determined, and the port is enabled.
Green flashing The Module is installed and supported. The Link Status has
been determined, but the port is disabled.
(continued)
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16
CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
LED
Color
Indicates
Yellow
The Module is installed and supported. The Link status has
not been determined or there is no Link for a single port
Module.
Yellow flashing A Module is installed, however, it is not supported.
Off
Unit LEDs
1–8 Green
The Module is not installed.
When the Switch forms a stack with other Switch 4400
units, the LED indicates the position of the unit in the stack
and that a link is present.
When the Switch is stand-alone and not part of a stack, LED
1 is on.
Green rotating When a software upgrade is in progress, the Unit LEDs of the
unit that is being upgraded flash on and off in the following
sequence —
1,2,4,6,8,7,5,3 (24-port)
1,2,3,4,8,7,6,5 (48-port)
Green flashing The Switch physically forms a stack with other Switch 4400
units, but cannot be managed as part of that stack until all
units have been upgraded to software version 2.0 or later.
Off
A fault has occurred.
Power/Self Test LED
Green
The Switch is powered-up and operating normally.
Green flashing The Switch is either downloading software or is initializing
(which includes running a Power On Self Test).
Yellow
Off
The Switch has failed its Power On Self Test.
The Switch is not receiving power or there is a fault with the
Power Supply Unit.
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Switch 4400 — Rear View Detail
17
Switch 4400 — Rear
View Detail
Figure 3 Switch 4400 — rear view
Power Socket The Switch automatically adjusts its power setting to any supply voltage
in the range 90-260 VAC.
Redundant Power To protect against internal power supply failure, you can use this socket
System Socket to connect a Switch 4400 to a SuperStack 3 Advanced Redundant Power
System (RPS). See “Connecting a Redundant Power System” on page 24.
Console Port The console port allows you to connect a terminal and perform remote or
local out-of-band management. The console port uses a standard null
modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop
bit.
Expansion Module You can use these slots to install Expansion Modules. These allow the
Slots Switch to support various forms of connection and add extra functionality
to your Switch. Contact your supplier for more information.
WARNING: When an Expansion Module is not installed, ensure the
blanking plate is fitted by tightening all screws with a suitable tool.
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18
CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400
Default Settings
Table 6 shows the default settings for the Switch 4400:
Table 6 Default Settings
Feature
Switch 4400
Automatic IP Configuration
Port Status
Enabled
Enabled
Port Speed
10/100 Mbps ports are auto-negotiated
Duplex Mode
All fixed 10BASE-T and 100BASE-TX ports are
auto-negotiated
Flow Control
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Enabled in half duplex
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Auto-negotiated in full duplex
Broadcast Storm Control
Virtual LANs (VLANs)
Enabled
All ports belong to the untagged Default VLAN
(VLAN 1) with 802.1Q learning operational
IP Multicast Filtering
Filtering enabled
Rapid Spanning Tree Protocol Enabled
Fast Start:
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Enabled on front panel ports
Disabled on rear panel port
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RMON Alarm
Enabled
Enabled
Disabled
Smart Auto-Sensing
Webcache Support
Quality of Service (QoS)
All ports prioritize NBX VoIP traffic (LAN and IP).
All ports set to “best effort” for all other traffic.
If you initialize a Switch unit by selecting System > Control > Initialize in
the Web interface or by entering system control initialize in
the Command Line Interface, the following settings are retained to allow
you to connect to and manage the Switch:
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IP Address
Subnet Mask
Default Router
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INSTALLING THE SWITCH
2
Switch 4400. It covers the following topics:
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Package Contents
Choosing a Suitable Site
Rack-mounting
Placing Units On Top of Each Other
The Power-up Sequence
WARNING: Safety Information. Before installing or removing any
components from the Switch 4400 or carrying out any maintenance
procedures, you must read the safety information provided in Appendix A
of this guide.
AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever
tout composant du Switch 4400 ou d'entamer une procédure de
maintenance, lisez les informations relatives à la sécurité qui se trouvent
dans l'Appendice A de ce guide.
VORSICHT: Sicherheitsinformationen. Bevor Sie Komponenten aus
dem Switch 4400 entfernen oder dem Switch 4400 hinzufuegen oder
Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen,
die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.
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20
CHAPTER 2: INSTALLING THE SWITCH
Package Contents
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Switch 4400 (24-port) (3C17203) or Switch 4400 (48-port) (3C17204)
CD-ROM
Getting Started Guide (this guide)
Implementation Guide
Management Quick Reference Guide
Release Notes
Unit Information Labels
Warranty Information
Power Cord
2 x Mounting brackets
4 x Screws
4 x Rubber feet
Choosing a Suitable
Site
The Switch is suited for use on a desktop, either free standing or
mounted in a standard 19-inch equipment rack. Alternatively, the Switch
can be mounted in a wiring closet or equipment room, as an aggregator
for other Hubs and Switches. A rack-mounting kit containing two
mounting brackets is supplied with the Switch.
CAUTION: Ensure that the ventilation holes are not obstructed.
When deciding where to position the Switch, ensure that:
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Cabling is located away from:
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sources of electrical noise such as radios, transmitters and
broadband amplifiers.
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power lines and fluorescent lighting fixtures
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The Switch is accessible and cables can be connected easily.
Water or moisture cannot enter the case of the Switch.
Air-flow is not restricted around the Switch or through the vents in the
side of the Switch. 3Com recommends that you provide a minimum of
25mm (1in.) clearance.
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Air flow around the Switch does not exceed 40 °C (104 °F).
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Rack-mounting
21
If the Switch is installed in a 19-inch rack or closed assembly its local air
temperature may be greater than room ambient temperature.
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The air is as free from dust as possible.
The unit is installed in a clean, air conditioned environment.
No more than eight Switch units are placed on top of one another, if
the units are free-standing.
Rack-mounting
The Switch 4400 is 1U high and will fit in most standard 19-inch racks.
CAUTION: Disconnect all cables from the Switch before continuing.
Remove all self adhesive pads from the underside of the Switch if they
have been fitted.
To rack-mount your Switch:
1 Place the Switch 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
Switch, as shown in Figure 3.
Figure 4 Fitting a bracket for rack-mounting
3 Insert the two screws and tighten with a suitable screwdriver.
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22
CHAPTER 2: INSTALLING THE SWITCH
You must use the screws supplied with the mounting brackets. Damage
caused to the unit by using incorrect screws invalidates your warranty.
4 Repeat steps 2 and 3 for the other side of the Switch.
5 Insert the Switch into the 19-inch rack and secure with suitable screws
(not provided). Ensure that ventilation holes are not obstructed.
6 Connect network cabling.
7 Finally place a unit information label on the unit in an easily accessible
position. The unit information label shows the following:
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The 3Com product name of the Switch
The 3Com 3C number of the Switch
The unique MAC address (Ethernet address) of the Switch
The serial number of the Switch
You may need this information for fault reporting purposes.
Placing Units On
Top of Each Other
If the Switch units are free-standing, up to eight units can be placed one
on top of the other. If you are mixing a variety of SuperStack® 3 Switch
and Hub 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.
Stacking Units
Switch 4400 units can be stacked together and then treated as a single
manageable unit with one IP address. Any combination of 24-port and
48-port units is allowed in a single stack, as long as the total number of
front panel ports does not exceed the limit of 192 ports. The following
combinations are allowed:
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4 x 48-port Switches
3 x 48-port Switches and 2 x 24-port Switches
2 x 48-port Switches and 4 x 24-port Switches
1 x 48-port Switch and 6 x 24-port Switches
8 x 24-port Switches
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The Power-up Sequence
23
Using the Expansion Module slot at the rear of the Switch, you can stack
Switch units together in two ways:
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The SuperStack 3 Switch Cascade Stacking Kit (3C17227) consists of
two Cascade Modules and a Cascade Cable. This kit allows you to
connect two Switch 4400 units together.
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The SuperStack 3 Cascade Extender Kit (3C17228) consists of one
Cascade Module, one Cascade Cable and one Cascade Extender Unit.
This kit allows you to connect any of the combinations of Switch 4400
units shown in “Stacking Units” on page 22. Each Cascade Extender
Kit enables you to add one additional Switch to your stack.
For more information contact your supplier, and refer to the user
documentation that accompanies these Cascade Kits.
When the Switch 4400s are stacked together they are assigned a unit
number from bottom-to-top for management purposes. When further
switches are added to the stack, they can be positioned at the bottom of
the stack or at the top. Either way, the Switch management software will
re-order the Switch unit numbers into a logical order again (from bottom
to top).
The Power-up
Sequence
The following sections describe how to get your Switch 4400
powered-up and ready for operation.
Powering-up the Use the following sequence of steps to power-up the Switch.
Switch 4400
1 Plug the power cord into the power socket at the rear of the Switch.
The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately 10 seconds.
Checking for Correct During the Power On Self Test, all ports on the Switch are disabled and
Operation of LEDs the LEDs light in a set sequence.
When the POST has completed, check the Power/Self Test LED to make
sure that your Switch is operating correctly. Table 7 shows possible colors
for the LED.
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24
CHAPTER 2: INSTALLING THE SWITCH
Table 7 Power/Self Test LED colors
Color
State
Green
The Switch is powered-up and
operating normally.
Yellow
Off
The Switch has failed its Power On Self
Test. This occurs if any of the ports fail
during power-up.
The Switch is not receiving power.
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 46.
Connecting a You can connect a SuperStack 3 Advanced Redundant Power System
Redundant Power (3C16071B) to the Switch. This unit, which is also known as an RPS, is
System designed to maintain the power to your Switch if a power supply failure
occurs.
For normal redundancy, the unit requires one Type 2A Power Module
(part number 3C16074A). For full redundancy, the unit requires two type
2A Power Modules combined using a Type 2 Y-Cable.
CAUTION The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
CAUTION: The Switch can only use a SuperStack Advanced Redundant
Power System output.
Choosing the Correct All of the ports on the front of the Switch 4400 are Auto-MDIX, that is
Cables they have a cross-over capability. The port can automatically detect
whether it needs to operate in MDI or MDIX mode. Therefore you can
make a connection to a port with a straight-through (MDI) or a cross-over
cable (MDIX).
The Auto-MDIX feature only operates when auto-negotiation is enabled.
If auto-negotiation is disabled, all the Switch ports are configured as
MDIX (cross-over). If you want to make a connection to another MDIX
port, you need an automatic cross-over cable. Many ports on
workstations and servers are configured as MDI (straight-through). If you
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The Power-up Sequence
25
want to make a connection to an MDI port, you need to use a standard
straight-through cable. See Table 8.
3Com recommends that you use Category 5 twisted pair cable — the
maximum segment length for this type of cable is 100 m (328 ft).
Table 8 Cables required to connect the Switch 4400 to other devices if
auto-negotiation is disabled
Cross-over Cable
Straight-through Cable
Switch to Switch
(MDIX to MDIX)
✕
ꢀ
Switch to Hub
(MDIX to MDIX)
ꢀ
✕
Switch to PC (NIC)
(MDIX to MDI)
✕
ꢀ
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26
CHAPTER 2: INSTALLING THE SWITCH
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SETTING UP FOR MANAGEMENT
3
Your Switch can operate in its default state, that is, you can install it and
it will work straight away (plug-and-play). However, to make full use of
the features offered by the Switch, and to change and monitor the way it
works, you have to access the management software that resides on the
Switch. This is known as managing the Switch.
Managing the Switch can help you to improve the efficiency of the
Switch and therefore the overall performance of your network.
methods of accessing the management software to manage a Switch. It
covers the following topics:
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Setting Up Overview
Initial Switch Setup
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Manual Setup
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Automatic Setup
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Methods of Managing a Switch
Setting Up Command Line Interface Management
Setting Up Web Interface Management
Setting Up SNMP Management
Default Users and Passwords
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28
CHAPTER 3: SETTING UP FOR MANAGEMENT
Setting Up
Overview
This section gives an overview of what you need to do to get your Switch
set up and ready for management when it is in its default state. Detailed
procedural steps are contained in the sections that follow. In brief, you
need to:
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Configure IP information for your Switch by completing initial Switch
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Prepare for your chosen method of management
CAUTION: To protect your Switch from unauthorized access, you must
change all default passwords as soon as possible, even if you do not
intend to actively manage your Switch. For more information on default
users and changing default passwords, see “Default Users and
Passwords” on page 44.
IP Configuration You can use one of the following methods to allocate IP information to
your Switch (essential if you wish to manage your Switch across the
network).
Manual IP Configuration
You can choose to configure the IP information yourself. The Switch
remembers the information that you enter until you change it again or
set the configuration method to Automatic.
You should use the Manual IP configuration method if:
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you do not have a DHCP or BootP server on your network, or
you want to remove the risk of the IP address ever changing, or
it is not possible to configure the DHCP or BootP server to allocate
static IP addresses (this is necessary to ensure that the Switch is always
allocated the same IP address).
For most installations, 3Com recommends that you configure the Switch
manually. This makes management simpler and more reliable as it is not
dependent on a DHCP or BootP server, and eliminates the risk of the IP
address changing.
If you wish to manually enter IP information for your Switch, work
through the “Manual Setup” section on page 31 and connect to a front
panel port or the console port to manually configure the IP information.
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Setting Up Overview
29
Automatic IP Configuration
By default the Switch tries to configure itself with IP information without
requesting user intervention. It tries to obtain an IP address from a DHCP
or BootP server on the network.
If neither server is found, the Switch will configure itself with an IP
address in the range 169.254.1.0 to 169.254.254.255. This is known as
Auto-IP and is the same mechanism used by Windows 98 and Windows
2000. IP addresses configured by Auto-IP are temporary as they cannot
be routed but are useful for small networks which are not connected to
other networks, or for initial configuration.
However, as soon as a DHCP or BootP server is detected, the Switch will
configure itself with the IP address allocated by that server.
When using automatic IP configuration it is important that the IP address
of the Switch is static, otherwise you will not know what the IP address is
and it will be difficult to manage. Most DHCP and BootP servers allow
static IP addresses to be configured so that you know what IP address will
be allocated to the Switch. Refer to the documentation that accompanies
your DHCP/BootP server.
For a detailed description of how automatic IP configuration operates,
please refer to the Implementation Guide that accompanies your Switch.
You should use the automatic IP configuration method if:
I
I
flexibility is needed. If the Switch is re-deployed onto a different
subnet, it will automatically reconfigure itself with an appropriate IP
address, instead of you having to manually reconfigure the Switch.
If you use the automatic IP configuration method, you need to view the
automatically allocated IP information before you can begin
management. Work through the “Automatic Setup” section on page 36
and use 3Com Network Supervisor or connect to the console port to
discover the automatically allocated IP information.
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30
CHAPTER 3: SETTING UP FOR MANAGEMENT
Preparing for Once your Switch’s initial set up is complete you can set up your chosen
Management management method as described in “Methods of Managing a Switch”
on page 39.
For detailed information about the specific web interface operations and
command line interface commands and problem solving, refer to the
Initial Switch Setup
Before you begin the initial setup of your Switch, you must first
determine your preferred setup method. There are two setup methods:
I
Manual Setup — You have two choices of how to configure the IP
information, as shown in Table 9.
I
Automatic Setup — Your Switch must be online, that is, connected to
a network. You have two choices of how to view the allocated IP
information, as shown in Table 9.
Table 9 Initial Switch Setup Methods
Manual Setup
Connecting to a front panel Use the web interface to
Automatic Setup
Using 3Com Network
Supervisor
Use 3Com Network
Supervisor to detect the
automatically allocated IP
information.
port
manually enter IP
information by accessing
the Switch using its default
IP address
169.254.100.100.
Connecting to the console Use the command line
port
Connecting to the console Use the command line
interface to view the
interface to manually enter port
IP information.
automatically allocated IP
information.
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Manual Setup
31
Manual Setup
You can set up a Switch manually in the following ways:
I
Connecting to a front panel port — Connect a workstation using an
Ethernet cable to a front panel port of the Switch. You can then
manually enter IP information using the web interface.
I
Connecting to the console port — Connect a workstation using a
console cable to the console port of the Switch. You can then
manually enter IP information using the command line interface (CLI).
Connecting to a Front To set up your Switch manually you can make a connection to a front
Panel Port panel port. You must do this whilst the Switch is offline, that is, before
you connect the Switch to a network.
Pre-requisites
I
I
I
I
I
A workstation running Windows 95/98/2000 or Windows NT.
A Network Interface Card (NIC).
A Category 5 twisted pair Ethernet cable with RJ-45 connectors.
A suitable Web browser — refer to “Choosing a Browser”on page 42.
You need to have the following so that you can manually set up the
Switch with IP information:
I
I
I
IP address
subnet mask
default gateway
Connecting the Workstation to the Switch
1 Connect the workstation to a front panel port using an Ethernet cable as
shown in Figure 5.
Figure 5 Connecting a workstation to the Switch via a front panel port
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32
CHAPTER 3: SETTING UP FOR MANAGEMENT
To connect the cable:
a Attach an RJ-45 connector at one end of the Ethernet cable to the
Network Interface Card (NIC) in the workstation.
b Connect the RJ-45 connector at the other end of the cable to one of
the front panel ports on the Switch.
Configuring the Workstation with IP Information
You need to change the IP address and subnet mask of the workstation
that you have connected to the Switch. Make a note of the existing
settings so you can return to them later. Change the workstation to the
following settings:
I
IP address — 169.254.100.99
Subnet mask — 255.255.255.0
I
Setting Up the Switch with IP Information
You are now ready to manually set up the Switch with IP information
using the Web interface.
1 Power-up the Switch. This takes approximately one minute.
2 Open a suitable Web browser and enter 169.254.100.100in the
Location Address field. This is the default IP address that is automatically
assigned to an offline unit.
If there is no response, wait for one minute then re-enter the default IP
address.
3 At the login and password prompts, enter adminas your user name and
press Return at the password prompt. If you have logged on correctly, a
set of Getting Started pages are displayed.
the Switch. Select Manualand then enter the IP address, subnet mask,
and default gateway that you want the Switch to use when it is
connected to the network. The final page displays a summary of the
information entered.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 39.
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Manual Setup
33
Connecting to the To set up your Switch manually you can alternatively make a connection
Console Port to the console port (this example describes a local connection to the
console port, rather than a remote one via a modem). You can do this
whilst the Switch is offline, that is, before you connect the Switch to a
network, or whilst the Switch is online, that is, connected to a network.
Pre-requisites
I
A workstation with terminal emulation software installed, such as
Microsoft Hyperterminal. This software allows you to communicate
with the Switch via the console port directly, or through a modem.
I
I
Documentation supplied with the terminal emulation software.
A suitable cable:
I
A standard null modem cable — if you are connecting directly to
the console port, or
I
A standard modem cable — if you are connecting to the console
port using a modem.
You can find pin-out diagrams for both cables in Appendix B on page 57.
I
You need to have the following so that you can manually set up the
Switch with IP information:
I
I
I
IP address
subnet mask
default gateway
Connecting the Workstation to the Switch
1 Connect the workstation to the console port using a standard null
modem cable as shown in Figure 6.
Figure 6 Connecting a workstation to the Switch via the console port
To connect the cable:
a Attach the female connector on the cable to the male connector on
the console port of the Switch.
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34
CHAPTER 3: SETTING UP FOR MANAGEMENT
b Tighten the retaining screws on the cable to prevent it from being
loosened.
c
Connect the other end of the cable to one of the serial ports (also
known as a COM port) on your workstation.
2 Open your terminal emulation software and configure the COM port
settings to which you have connected the cable. The settings should be
set to match the default settings for the Switch, which are:
I
I
I
I
I
19,200 baud
8 data bits
no parity
1 stop bit
no hardware flow control
Refer to the documentation that accompanies the terminal emulation
software for more information.
Setting Up the Switch with IP Information
You are now ready to manually set up the Switch with IP information
using the command line interface.
detects a connection to its console port.
If the login prompt does not begin immediately, press Return a few times
until it starts.
2 At the login and password prompts, enter adminas your user name and
press Return at the password prompt. If you have logged on correctly, the
top-level menu of the command line interface is displayed as shown in
the example in Figure 7.
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Manual Setup
35
Figure 7 Example top-level command line interface menu
3 At the Select menu option prompt enter the protocol ip
prompt enter manual. The screen prompts you to enter IP information.
4 Enter the IP address, subnet mask, and gateway IP address for the Switch.
The screen displays a summary of the information entered.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 39.
If you do not intend to use the command line interface via the console
port to manage the Switch, you can disconnect the serial cable and close
the terminal emulator software.
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36
CHAPTER 3: SETTING UP FOR MANAGEMENT
Automatic Setup
You can set up the Switch automatically whilst it is connected to a
network in either of the following ways:
I
Using 3Com Network Supervisor — This application will auto-discover
the Switch and display the automatically allocated IP information
assigned to the Switch.
I
Connecting to the Console Port — Connect a workstation using a
console cable to the console port of the Switch. You can then view the
IP information automatically assigned to the Switch using the
command line interface (CLI).
Using 3Com Network You can use the 3Com Network Supervisor application provided on the
Supervisor CD-ROM that accompanies your Switch to discover the automatically
allocated IP information.
1 Connect your Switch to the network.
2 Power-up the Switch and wait for two minutes.
3 Launch 3Com Network Supervisor and run the Auto-discovery wizard.
3Com Network Supervisor will auto-discover the new Switch and display
the IP information that has been automatically allocated to the Switch.
Most DHCP and BootP servers allow static IP addresses to be configured
so that you know what IP address the Switch will be given. Refer to the
documentation that accompanies your DHCP or BootP server.
If your network does not have a DHCP or BootP server, 3Com Network
Supervisor must be on the same subnet as the Switch, as Auto-IP
addresses are non-routable.
Connecting to the To set up your Switch automatically you can alternatively make a
Console Port connection to the console port. (This example describes a local
connection to the console port, rather than a remote one via a modem.)
Pre-requisites
I
A workstation with terminal emulation software installed, such as
Microsoft Hyperterminal. This software allows you to communicate
with the Switch via the console port directly, or through a modem.
I
Documentation supplied with the terminal emulation software.
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Automatic Setup
37
I
A suitable cable:
I
A standard null modem cable — if you are connecting directly to
the console port, or
I
A standard modem cable — if you are connecting to the console
port using a modem.
You can find pin-out diagrams for both cables in Appendix B on page 57.
I
A Category 5 twisted pair Ethernet cable with RJ-45 connectors to
connect your Switch to the network.
Connecting the Workstation to the Switch
1 Connect the workstation to the console port using a standard null
modem cable as shown in Figure 8.
Figure 8 Connecting a workstation to the Switch via the console port
To connect the cable:
a Attach the female connector on the cable to the male connector on
the console port of the Switch.
b Tighten the retaining screws on the cable to prevent it from being
loosened.
c
Connect the other end of the cable to one of the serial ports (also
known as a COM port) on your workstation.
2 Open your terminal emulation software and configure the COM port
settings to which you have connected the cable. The settings should be
set to match the default settings for the Switch, which are:
I
I
I
I
I
19,200 baud
8 data bits
no parity
1 stop bit
no hardware flow control
Refer to the documentation that accompanies the terminal emulation
software for more information.
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38
CHAPTER 3: SETTING UP FOR MANAGEMENT
Viewing IP Information via the Console Port
You are now ready to view the automatically allocated IP information
using the command line interface.
1 Connect your Switch to the network using an Ethernet cable. As soon as
a network connection is made the Switch begins the automatic IP
configuration process.
The automatic IP configuration process usually completes within one
minute.
If there is no response from a DHCP server within 30 seconds, the Auto-IP
configuration mechanism attempts to allocate the default IP address
169.254.100.100. If this address is not available, it then allocates an IP
address in the range of 169.254.x.y (where x is in the range 1 to 254, and
y is in the range 0 to 255).
detects a connection to its console port.
If the login prompt does not begin immediately, press Return a few times
until it starts.
3 At the login and password prompts, enter adminas your user name and
press Return at the password prompt. If you have logged on correctly, the
top-level menu of the command line interface is displayed as shown in
the example in Figure 9.
Figure 9 Example top-level command line interface menu
4 At the Select menu option prompt enter the protocol ip
interface summarycommand. At the Select IP interfaces
prompt enter all. A summary of the automatically allocated IP
information is displayed. Make a note of the Network IP Address.
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Methods of Managing a Switch
39
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 39.
If you do not intend to use the command line interface via the console
port to manage the Switch, you can disconnect the serial cable and close
the terminal emulator software.
Methods of
Managing a Switch
Once you have completed the initial set up of your Switch, you can
decide how you wish to manage the Switch. You can use one of the
following methods:
I
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I
Command line interface management
Web interface management
SNMP management
Command Line Each Switch has a command line interface (CLI) that allows you to
Interface manage the Switch from a workstation, either locally via a console port
Management connection (see Figure 10), or remotely over the network (see Figure 11).
Figure 10 CLI management via the console port
Figure 11 CLI management over the network
Refer to “Setting Up Command Line Interface Management” on
page 41.
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40
CHAPTER 3: SETTING UP FOR MANAGEMENT
Web Interface Each Switch has an internal set of web pages that allow you to manage
Management the Switch using a Web browser remotely over an IP network (see
Figure 12).
Figure 12 Web interface management over the network
Refer to “Setting Up Web Interface Management” on page 42.
SNMP Management You can manage a Switch using any network management workstation
running the Simple Network Management Protocol (SNMP) as shown in
Figure 13. For example, you can use the 3Com Network Supervisor
software that is provided on the CD-ROM that accompanies your Switch.
Refer to “Setting Up SNMP Management” on page 43.
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Setting Up Command Line Interface Management
41
Setting Up
This section describes how you can set up command line interface
Command Line
Interface
Management
CLI Management via To manage a Switch using the command line interface via the local
the Console Port console port connection:
1 Ensure you have connected your workstation to the console port correctly
2 Your Switch is now ready to continue being managed and/or configured
through the CLI via its console port.
CLI Management over To manage a Switch using the command line interface over a network
the Network using Telnet:
1 Ensure you have already set up the Switch with IP information as
described in “Initial Switch Setup” on page 30.
2 Check that you have the IP protocol correctly installed on your
management workstation. You can check this by trying to browse the
World Wide Web. If you can browse, the IP protocol is installed.
3 Check you can communicate with the Switch by entering a ping
command at the DOS prompt in the following format:
c:\ ping xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If you get an error message, check that your IP information has been
entered correctly and the Switch is powered up.
4 To open a Telnet session via the DOS prompt, enter the IP address of the
Switch that you wish to manage in the following format:
>telnet xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If opening a Telnet session via third party software you will need to enter
the IP address in the format suitable for that software.
5 At the login and password prompts, enter adminas your user name and
press Return at the password prompt (or the password of your choice if
you have already modified the default passwords).
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42
CHAPTER 3: SETTING UP FOR MANAGEMENT
If the login prompt does not display immediately, press Return a few
times until it starts.
6 If you have logged on correctly, the top-level menu of the command line
interface for the Switch you wish to manage is displayed as shown in
Figure 7 on page 35.
Setting Up Web
Interface
Management
This section describes how you can set up web interface management
over the network.
Pre-requisites
I
I
I
Ensure you have already set up the Switch with IP information as
described in “Initial Switch Setup” on page 30.
Ensure that the Switch is connected to the network using a Category
5 twisted pair Ethernet cable with RJ-45 connectors.
A suitable Web browser.
Choosing a Browser
To display the web interface correctly, use one of the following Web
browsers:
I
Netscape Navigator® version 4.5, 4.6, or 4.7.
I
Microsoft Internet Explorer version 4.0, 5.0, or 5.5.
For the browser to operate the web interface correctly, JavaScript™ and
Cascading Style Sheets must be 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.
Web Management To manage a Switch using the web interface over an IP network:
Over the Network
1 Check that you have the IP protocol correctly installed on your
management workstation. You can check this by trying to browse the
World Wide Web. If you can browse, the IP protocol is installed.
2 Check you can communicate with the Switch by entering a ping
command at the DOS prompt in the following format:
c:\ ping xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
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Setting Up SNMP Management
43
If you get an error message, check that your IP information has been
entered correctly and the Switch is powered up.
3 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:
4 At the login and password prompts, enter adminas your user name and
press Return at the password prompt (or the password of your choice if
you have already modified the default passwords).
5 Click on the Device View button to display the web management options.
Setting Up SNMP
Management
Any network management application running the Simple Network
Management Protocol (SNMP) can manage a Switch if:
I
The correct Management Information Bases (MIBs) are installed on the
management workstation.
I
The management workstation is connected to the Switch using a port
in VLAN 1 (the Default VLAN). By default, all ports on the Switch are in
VLAN 1.
You can use the 3Com Network Supervisor application that is provided on
the CD-ROM that accompanies your Switch to provide SNMP
management for your Switch. If you use 3Com Network Supervisor it
automatically loads the correct MIBs and necessary files onto your
workstation.
Pre-requisites
I
Documentation supplied with the SNMP network management
application software.
To manage your Switch using an SNMP network management
application, you need to specify SNMP community strings for the users
defined on the Switch. You can do this using the command line interface
system management snmp communitycommand — refer to the
command line interface section of the “SuperStack 3 Switch
Management Interface Reference Guide” for more information.
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44
CHAPTER 3: SETTING UP FOR MANAGEMENT
Default Users and
Passwords
If you intend to manage the Switch using the web interface or the
command line interface, or to change the default passwords, you need to
log in with a valid user name and password. The Switch has three default
user names, and each user name has a different password and level of
access. These default users are listed in Table 10.
CAUTION: To protect your Switch from unauthorized access, you must
change all default passwords as soon as possible, even if you do not
intend to actively manage your Switch
Table 10 Default Users
User
Name
Default
Password Access Level
monitor
monitor
monitor — the user can view all manageable parameters,
except special/security features, but cannot change any
manageable parameters.
manager manager
admin (no
manager — the user can access and change the
operational parameters but not special/security features
security — the user can access and change all manageable
password) parameters
Use the admin default user name (no password) to login and carry out
initial Switch setup.
Changing Default You can change the default passwords using either:
Passwords
I
The security device user modifycommand on the CLI, or
The Security > Device > User > Modify operation on the web interface.
I
For more information about default users and passwords, refer to the
“Superstack 3 Switch Management Interface Reference Guide” on the
Switch CD-ROM.
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PROBLEM SOLVING
4
with the operation of your Switch. There is also an explanation of IP
addressing.
The topics covered are:
I
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I
Solving Problems Indicated by LEDs
Solving Hardware Problems
Solving Communication Problems
If you experience a problem that is not listed here, it may be included in
the support section of the Superstack 3 Switch Management Interface
Reference Guide on the CD-ROM that accompanies your Switch.
For Technical Support information, see Appendix D.
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46
CHAPTER 4: PROBLEM SOLVING
Solving Problems
Indicated by LEDs
If the LEDs on the Switch indicate a problem, refer to the list of suggested
solutions below.
The Power LED does not light
Check that the power cable is firmly connected to the Switch and to the
supply outlet. If the connection is secure and there is still no power, you
may have a faulty power cord or an internal fault. Firstly, check the power
cord by:
I
testing it in another device
I
connecting a working power cord to the ‘problem’ device
then contact your supplier for advice.
On powering-up, the Power/Self Test LED lights yellow
The Switch unit has failed its Power On Self Test (POST) because of an
internal problem. The fault type will be indicated on the unit LEDs.
Contact your supplier for advice.
A link is connected and yet the Status LED for the port does not
light
Check that:
I
The Switch and the device at the other end of the link (or cable) are
connected securely.
I
I
I
The devices at both ends of the link are powered-up
The quality of cable is satisfactory
Auto-negotiation settings are the same at both ends.
Auto-negotiation problems will occur with 10BASE-T or 100BASE-T
where auto-negotiation is disabled and incorrect cables are being used
(cross-over or straight)
Auto-negotiation problems will occur with fiber if:
I
The Receiver (RX) and Transceiver (TX) cable connectors are
swapped
I
I
Fibers are broken
Auto-negotiation differs at either end (a link appears at the ‘fixed’
end and not at the auto-negotiation end)
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Solving Hardware Problems
47
The Unit LED is flashing green
The Switch unit physically forms a stack with other Switch 4400 units, but
cannot be managed as part of that stack because one or more units have
not been upgraded to software version 2.0 or later. You must upgrade
each unit in the stack to this software version, which is available on the
CD-ROM that accompanies your Switch.
Solving Hardware
Problems
In the rare event of your Switch unit experiencing a hardware failure,
refer to the list of suggested solutions below.
An expansion module is installed and the unit will not power up
Ensure that the expansion module is fully seated in the slot and the
connectors are engaged so that the securing screws can be tightened.
An SNMP fan fail trap is received
1 Power off the unit.
2 Check that the air vents are not obstructed.
3 Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC main supply, remove and reconnect the DC
RPS supply.
4 If a further fan fail trap is received, return the unit.
Unit fails, no SNMP fan fail trap is received
1 Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC mains supply, remove and reconnect the DC
RPS supply.
determine whether a thermal shutdown has occurred.
3 If no, return the unit:
If yes, check that:
I
The air vents are not obstructed.
I
The ambient temperatures and environmental conditions meet those
specified in Appendix C.
4 Power cycle the unit. If a further thermal shutdown occurs, and all
environmental conditions are satisfactory, return the unit to 3Com.
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48
CHAPTER 4: PROBLEM SOLVING
Solving
If you experience communication problems with the Switch, ensure that:
Communication
Problems
I
The Switch IP address has been configured as described in Chapter 3.
I
If the Switch is separated from your management application by a
router, ensure that the default gateway IP address within the Switch is
the same as the IP address of the router.
I
The Switch’s IP address has been entered correctly in your network
management application (such as 3Com Network Supervisor).
The following is a brief overview of IP addressing, and how to obtain a
registered IP address.
IP Addressing
To be managed correctly, each device on your network (for example a
Switch or Hub) must have a unique IP address. IP addresses have the
format n.n.n.n where n is a decimal number between 0 and 255. An
example IP address is 192.168.100.8.
The IP address is split into two parts:
I
I
The first part (‘192.168.100’ in the example) identifies the network on
which the device resides
The second part (‘.8’ in the example) identifies the device within the
network
The natural subnet mask for this example is 255.255.255.0.
If your network has a connection to the external IP network, that is, you
access the Internet, you must apply for a registered IP address.
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Solving Communication Problems
49
How do you obtain a registered IP Address?
The IP registration system ensures that every IP address used is unique; if
you do not have a registered IP address, you may be using an identical
address to someone else and your network will not operate correctly.
InterNIC Registration Services is the organization responsible for
supplying registered IP addresses. The following contact information is
correct at time of publication:
World Wide Web site: http://www.internic.net
If your IP network is internal to your organization only, that is, you do not
access the Internet, you may use any arbitrary IP address as long as it is
not being used by another device on your network. 3Com suggests you
use addresses in the series 192.160.100.X (where X is a number between
1 and 254) with a subnet mask of 255.255.255.0. These suggested IP
addresses are part of a group of IP addresses that have been set aside
specially for use ‘in house’ only.
These suggested IP addresses are part of a group of IP addresses that
have been set aside specially for use ‘in house’ only.
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50
CHAPTER 4: PROBLEM SOLVING
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SAFETY INFORMATION
A
You must read the following safety information before carrying out any
installation or removal of components, or any maintenance procedures
on the Switch 4400.
WARNING: Warnings contain directions that you must follow for your
personal safety. Follow all directions carefully.
You must read the following safety information carefully before you
install or remove the unit.
AVERTISSEMENT: Les avertissements présentent des consignes que vous
devez respecter pour garantir votre sécurité personnelle. Vous devez
respecter attentivement toutes les consignes.
Nous vous demandons de lire attentivement les consignes suivantes de
sécurité avant d’installer ou de retirer l’appareil.
VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer
eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu
befolgen.
Sie müssen die folgenden Sicherheitsinformationen’ sorgfältig
durchlesen, bevor Sie das Gerät installieren oder ausbauen.
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52
APPENDIX A: SAFETY INFORMATION
Important Safety Information
WARNING: Installation and removal of the unit must be carried out by
qualified personnel only.
WARNING: If installing the Switch 4400 in a stack with SuperStack II or
SuperStack 3 units that are narrower than the 4400, the Switch 4400
unit must be installed below the narrower units.
WARNING: The unit must be earthed (grounded).
WARNING: Connect the unit to an earthed power supply to ensure
compliance with safety standards.
WARNING: Power Cord Set:
This must be approved for the country where it is used:
U.S.A. and
Canada
I
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The cord set must be UL-approved and CSA certified.
The minimum specification for the flexible cord is:
No. 18 AWG
Type SV or SJ
3-conductor
I
I
The cord set must have a rated current capacity of at least
10A.
The attachment plug must be an earth-grounding type
with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A,
250V) configuration.
United
Kingdom only
I
I
The supply plug must comply with BS1363 (3-pin 13 amp)
and be fitted with a 5A fuse which complies with BS1362.
The mains cord must be <HAR> or <BASEC> marked and
be of type H03VVF3GO.75 (minimum).
Europe only:
I
I
The supply plug must comply with CEE 7/7 (“SCHUKO”).
The mains cord must be <HAR> or <BASEC> marked and
be of type H03VVF3GO.75 (minimum).
Denmark
I
I
The supply plug must comply with section 107-2-D1,
standard DK2-1a or DK2-5a.
Switzerland
The supply plug must comply with SEV/ASE 1011.
WARNING: The appliance coupler (the connector to the unit and not the
wall plug) must have a configuration for mating with an EN60320/IEC320
appliance inlet.
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L’information de Sécurité Importante
53
WARNING: The socket outlet must be near to the unit and easily
accessible. You can only remove power from the unit by disconnecting
the power cord from the outlet.
WARNING: This unit operates under SELV (Safety Extra Low Voltage)
conditions according to IEC 950. The conditions are only maintained if
the equipment to which it is connected also operates under SELV
conditions.
WARNING: France and Peru only:
This unit cannot be powered from IT† supplies. If your supplies are of IT
type, this unit must be powered by 230V (2P+T) via an isolation
transformer ratio 1:1, with the secondary connection point labelled
Neutral, connected directly to earth (ground).
†Impédance à la terre.
WARNING: U.K. only:
If connecting a modem to the console port of the Switch 4400, only use a
modem which is suitable for connection to the telecommunications
system.
WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot
be used as standard traditional telephone sockets, or to connect the unit to a
traditional PBX or public telephone network. Only connect RJ-45 data
connectors, network telephony systems, or network telephones to these
sockets.
Either shielded or unshielded data cables with shielded or unshielded
jacks can be connected to these data sockets.
WARNING: When an Expansion Module is not installed ensure the
blanking panel is fitted by tightening all screws with a suitable tool.
L’information de Sécurité Importante
AVERTISSEMENT: L'installation et la dépose de ce groupe doivent être
confiés à un personnel qualifié.
AVERTISSEMENT: Si vous entassez l'unité Switch avec les unités
SuperStack 3 Hub, l'unité Switch 4400 doit être installée en dessous des
unités Hub plus étroites.
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54
APPENDIX A: SAFETY INFORMATION
AVERTISSEMENT: Vous devez mettre l’appareil à la terre (à la masse) ce
groupe.
AVERTISSEMENT: Brancher l’unité à une source de courant mise à la
terre pour assurer la conformité aux normes de sécurité.
AVERTISSEMENT: Cordon électrique:
Il doit être agréé ans le pays d'utilisation:
Etats-Unis et
Canada
I
Le cordon doit avoir reçu l'homologation des UL et un
certificat de la CSA
I
Le cordon souple doit respecter, à titre minimum, les
spécifications suivantes :
I
I
I
I
calibre 18 AWG
type SV ou SJ
à 3 conducteurs
Le cordon doit être en mesure d'acheminer un courant
nominal d'au moins 10 A
I
La prise femelle de branchement doit être du type à mise à la
terre (mise à la masse) et respecter la configuration NEMA
5-15P (15 A, 125 V) ou NEMA 6-15P (15 A, 250 V)
Danemark
Europe
I
I
I
I
La prise mâle d'alimentation doit respecter la section 107-2
D1 de la norme DK2 1a ou DK2 5a
La prise secteur doit être conforme aux normes CEE 7/7
(“SCHKO”)
LE cordon secteur doit porter la mention <HAR> ou
<BASEC> et doit être de type HO3VVF3GO.75 (minimum).
Suisse
La prise mâle d'alimentation doit respecter la norme SEV/ASE
1011
AVERTISSEMENT: Le coupleur d'appareil (le connecteur du groupe et
non pas la prise murale) doit respecter une configuration qui permet un
branchement sur une entrée d'appareil EN60320/CEI 320.
AVERTISSEMENT: La prise secteur doit se trouver à proximité de
l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil
hors circuit qu'en débranchant son cordon électrique au niveau de cette
prise.
AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement
basse de sécurité qui est conforme à la norme CEI 950. Ces conditions ne
sont maintenues que si l'équipement auquel il est raccordé fonctionne
dans les mêmes conditions.
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Wichtige Sicherheitsinformationen
55
AVERTISSEMENT: France et Pérou uniquement:
Ce groupe ne peut pas être alimenté par un dispositif à impédance à la
terre. Si vos alimentations sont du type impédance à la terre, ce groupe
doit être alimenté par une tension de 230 V (2 P+T) par le biais d'un
transformateur d'isolement à rapport 1:1, avec un point secondaire de
connexion portant l'appellation Neutre et avec raccordement direct à la
terre (masse).
AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont protégés par des
prises de données. Ils ne peuvent pas être utilisés comme prises de
téléphone conventionnelles standard, ni pour la connection de l’unité à
un réseau téléphonique central privé ou public. Raccorder seulement
connecteurs de données RJ-45, systèmes de réseaux de téléphonie ou
téléphones de réseaux à ces prises.
Il est possible de raccorder des câbles protégés ou non protégés avec des
jacks protégés ou non protégés à ces prises de données.
AVERTISSEMENT: Si le module d’expansion nest pas installé, veillez à
bien installer la plaque d’obturation et serrez toutes les vis à l’aide d’un
outil approprié.
Wichtige Sicherheitsinformationen
VORSICHT: Die Installation und der Ausbau des Geräts darf nur durch
Fachpersonal erfolgen.
VORSICHT: Wenn die Switch 4400 Einheit in einer Stapel mit anderen
SuperStack 3 Hub Einheiten eingebaut werden soll, muß die Switch 4400
Einheit unter die schmaleren Hub Einheiten eingebaut werden.
VORSICHT: Das Gerät muß geerdet sein.
VORSICHT: Das Gerät muß an eine geerdete Steckdose angeschlossen
werden, die europäischen Sicherheitsnormen erfüllt.
VORSICHT: Der Anschlußkabelsatz muß mit den Bestimmungen des
Landes übereinstimmen, in dem er verwendet werden soll.
VORSICHT: Der Gerätestecker (der Anschluß an das Gerät, nicht der
Wandsteckdosenstecker) muß eine passende Konfiguration für einen
Geräteeingang gemäß EN60320/IEC320 haben.
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56
APPENDIX A: SAFETY INFORMATION
VORSICHT: Die Netzsteckdose muß in der Nähe des Geräts und leicht
zugänglich sein. Die Stromversorgung des Geräts kann nur durch
Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen
werden.
VORSICHT: Europe
I
Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung)
sein und die Aufschrift <HAR> oder <BASEC> tragen.
I
Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).
VORSICHT: Der Betrieb dieses Geräts erfolgt unter den
SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 950. Diese
Bedingungen sind nur gegeben, wenn auch die an das Gerät
angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.
VORSICHT: RJ-45-Porte. Diese Porte sind geschützte Datensteckdosen.
Sie dürfen weder wie normale traditionelle Telefonsteckdosen noch für
die Verbindung der Einheit mit einem traditionellem privatem oder
öffentlichem Telefonnetzwerk gebraucht werden. Nur
RJ-45-Datenanscluße, Telefonnetzsysteme or Netztelefone an diese
Steckdosen anschließen.
Entweder geschützte oder ungeschützte Buchsen dürfen an diese
Datensteckdosen angeschlossen werden.
VORSICHT: Ist kein Erweiterungsmodul installiert, überprüfen Sie bitte
den Sitz der Stanzplatte, indem Sie alle Schrauben mit einem geeigneten
Werkzeug anziehen.
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58
APPENDIX B: PIN-OUTS
Modem Cable
9-pin to RS-232 25-pin
RJ-45 Pin
Assignments
Pin assignments are identical for 10BASE-TX and 100BASE-T RJ-45
connectors.
Table 11 Pin assignments
Pin Number
Signal
Function
Ports configured as MDI
1
2
3
4
5
6
7
8
Transmit Data +
Transmit Data +
Receive Data +
Not assigned
Not assigned
Receive Data –
Not assigned
Not assigned
Bidirectional Data A+
Bidirectional Data A-
Bidirectional Data B+
Bidirectional Data C+
Bidirectional Data C-
Bidirectional Data B-
Bidirectional Data D+
Bidirectional Data D-
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RJ-45 Pin Assignments
59
Table 12 Pin assignments
Pin Number
Signal
Function
Ports configured as MDIX
1
2
3
4
5
6
7
8
Receive Data +
Receive Data -
Transmit Data +
Not assigned
Not assigned
Transmit Data
Not assigned
Not assigned
Bidirectional Data B+
Bidirectional Data B-
Bidirectional Data A+
Bidirectional Data A-
Bidirectional Data D+
Bidirectional Data D-
Bidirectional Data C+
Bidirectional Data C-
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60
APPENDIX B: PIN-OUTS
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TECHNICAL SPECIFICATIONS
C
Switch 4400
(24-port)
Table 13 Switch 4400 (24-port) Technical Specifications
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 2.8 kg (6.2 lbs)
Environmental Requirements
Operating Temperature
Storage Temperature
Operating Humidity
Standards
0 ° to 40 °C (32 ° to 104 °F)
–40 ° to +70 °C (-40 ° to 158 °F)
10–95% relative humidity, non-condensing
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
EMC
UL 1950, EN60950, CSA 22.2 No. 950, IEC 60950
Emissions
CISPRR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, AS/NZS 3548 Class A, CNS 13438 Class A, EN61000-3-2,
EN61000-3-3
Immunity
EN 55024
Heat Dissipation
Power Supply
AC Line Frequency
Input Voltage Options
Current Rating
(continued)
75 watts maximum (1300 BTU/hour maximum)
50/60 Hz
90–240 VAC
2.3 A (amps)(maximum)
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62
APPENDIX C: TECHNICAL SPECIFICATIONS
Standards Supported
SNMP
SNMP protocol (RFC 1157)
Terminal Emulation
Telnet (RFC 854)
MIB-II (RFC 1213)
Protocols Used for Administration
UDP (RFC 768)
Bridge MIB (RFC 1493)
RMON MIB II (RFC 2021)
IP (RFC 791)
Remote Monitoring MIB (RFC
1757)
ICMP (RFC 792)
TCP (RFC 793)
MAU MIB (RFC 2239)
ARP (RFC 826)
TFTP (RFC 783)
DHCP (RFC 2131, RFC 2132, RFC 1534)
BOOTP (RFC 951, RFC 1497)
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Switch 4400 (48-port)
63
Switch 4400
(48-port)
Table 14 Switch 4400 (48-port) Technical Specifications
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 3.2 kg (7.1 lbs)
Environmental Requirements
Operating Temperature
Storage Temperature
Operating Humidity
Standards
0 ° to 40 °C (32 ° to 104 °F)
–40 ° to +70 °C (-40 ° to 158 °F)
10–95% relative humidity, non-condensing
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
EMC
UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950
Emissions
CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A, CNS 13438 Class A,
EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Heat Dissipation
Power Supply
120 watts maximum (410 BTU/hour maximum)
AC Line Frequency
Input Voltage Options
Current Rating
50/60 Hz
90–240 VAC
2.8 A (amps)(maximum)
Standards Supported
SNMP
SNMP protocol (RFC 1157)
Terminal Emulation
Telnet (RFC 854)
MIB-II (RFC 1213)
Protocols Used for Administration
UDP (RFC 768)
Bridge MIB (RFC 1493)
RMON MIB II (RFC 2021)
IP (RFC 791)
Remote Monitoring MIB (RFC
1757)
ICMP (RFC 792)
TCP (RFC 793)
MAU MIB (RFC 2239)
ARP (RFC 826)
TFTP (RFC 783)
DHCP (RFC 2131, RFC 2132, RFC 1534)
BOOTP (RFC 951, RFC 1497)
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64
APPENDIX C: TECHNICAL SPECIFICATIONS
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TECHNICAL SUPPORT
D
3Com provides easy access to technical support information through a
variety of services. This appendix describes these services.
Information contained in this appendix is correct at time of publication. For
the most recent information, 3Com recommends that you access the
3Com Corporation World Wide Web site.
Online Technical
Services
3Com offers worldwide product support 24 hours a day, 7 days a week,
through the following online systems:
I
I
I
World Wide Web site
3Com Knowledgebase Web Services
3Com FTP site
World Wide Web Site To access the latest networking information on the 3Com Corporation
World Wide Web site, enter this URL into your Internet browser:
This service provides access to online support information such as technical
documentation and software, as well as support options that range from
technical education to maintenance and professional services.
3Com The 3Com Knowledgebase is a database of technical information to help
Knowledgebase Web you install, upgrade, configure, or support 3Com products. The
Services Knowledgebase is updated daily with technical information discovered by
3Com technical support engineers. This complimentary service, which is
available 24 hours a day, 7 days a week to 3Com customers and partners,
is located on the 3Com Corporation World Wide Web site at:
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66
APPENDIX D: TECHNICAL SUPPORT
3Com FTP Site Download drivers, patches, software, and MIBs across the Internet from the
3Com public FTP site. This service is available 24 hours a day, 7 days a week.
To connect to the 3Com FTP site, enter the following information into
your FTP client:
I
I
I
Hostname: ftp.3com.com
Username: anonymous
Password: <your Internet e-mail address>
You do not need a user name and password with Web browser software
such as Netscape Navigator and Internet Explorer.
Support from Your
Network Supplier
If you require additional assistance, contact your network supplier. Many
suppliers are authorized 3Com service partners who are qualified to
provide a variety of services, including network planning, installation,
hardware maintenance, application training, and support services.
When you contact your network supplier for assistance, have the
following information ready:
I
I
I
I
Product model name, part number, and serial number
A list of system hardware and software, including revision levels
Diagnostic error messages
Details about recent configuration changes, if applicable
If you are unable to contact your network supplier, see the following
section on how to contact 3Com.
Support from 3Com If you are unable to obtain assistance from the 3Com online technical
resources or from your network supplier, 3Com offers technical telephone
support services. To find out more about your support options, call the
3Com technical telephone support phone number at the location nearest
you.
When you contact 3Com for assistance, have the following information
ready:
I
Product model name, part number, and serial number
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Support from 3Com
67
I
I
I
A list of system hardware and software, including revision levels
Diagnostic error messages
Details about recent configuration changes, if applicable
Here is a list of worldwide technical telephone support numbers. These
numbers are correct at the time of publication. Refer to the 3Com Web
site for updated information.
Country
Telephone Number
Country
Telephone Number
Asia, Pacific Rim
Australia
Hong Kong
India
1 800 678 515
800 933 486
+61 2 9937 5085 or
000800 6501111
001 800 61 009
03 5783 1270
P.R. of China
10800 61 00137 or
021 6350 1590 or
00800 0638 3266
800 6161 463
00798 611 2230 or
02 3455 6455
Singapore
S. Korea
Indonesia
Japan
Malaysia
New Zealand
Pakistan
1800 801 777
0800 446 398
+61 2 9937 5083
1235 61 266 2602
Taiwan, R.O.C.
Thailand
00798 611 2230
0080 611 261
001 800 611 2000
Philippines
Europe, Middle East and
Africa
From anywhere in these
regions, call:
+44 (0)1442 435529 phone
+44 (0)1442 432524 fax
Europe and South Africa
From the following countries, you may use the toll-free numbers:
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
0800 297468
0800 71429
800 17309
0800 113153
0800 917959
0800 1821502
06800 12813
1800 553117
1800 9453794
800 8 79489
Luxembourg
Netherlands
Norway
0800 3625
0800 0227788
800 11376
Poland
00800 3111206
0800 831416
0800 995014
900 983125
020 795482
0800 55 3072
0800 966197
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
Italy
Latin America
Brazil
Mexico
0800 13 3266
01 800 849CARE
Puerto Rico
Central and South America
800 666 5065
AT&T +800 998 2112
North America
1 800 NET 3Com
(1 800 638 3266)
Enterprise Customers:
1 800 876-3266
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68
APPENDIX D: TECHNICAL SUPPORT
Returning Products
for Repair
Before you send a product directly to 3Com for repair, you must first
obtain an authorization number. Products sent to 3Com without
authorization numbers will be returned to the sender unopened, at the
sender’s expense.
To obtain an authorization number, call or fax:
Country
Telephone Number
Fax Number
Asia, Pacific Rim
+ 65 543 6500
+ 65 543 6348
Europe, South Africa, and Middle East +44 (0)1442 435529
+ 44 (0)1442 432524
Central and South America
525 201 0075
Argentina
Bolivia
Brazil
0810 222 3266
511 241 1691
0800 133266 or
55 11 5643 2700
525 201 0004
562 240 6200
525 201 0004
525 201 0004
525 201 0004
525 201 0004
511 241 1691
525 201 0004
525 201 0004
Caribbean
Chile
Colombia
Ecuador
Mexico
Paraguay
Peru
Uruguay
Venezuela
From the following countries, you may call the toll-free numbers; select option 2 and then option 2:
Austria
0800 297468
0800 71429
800 17309
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
0800 113153
0800 917959
0800 1821502
00800 12813
1800553117
1800 9453794
1678 79489
0800 0227788
800 11376
00800 3111206
0800 831416
0800 995014
900 983125
020 795482
0800 55 3072
0800 966197
Israel
Italy
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
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Returning Products for Repair
69
Country
Telephone Number
Fax Number
U.S.A. and Canada
1 800 NET 3Com
(1 800 638 3266)
1 408 326 7120
(not toll-free)
Enterprise Customers:
1 800 876 3266
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70
APPENDIX D: TECHNICAL SUPPORT
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INDEX
71
F
INDEX
factory defaults 18
H
hardware features 12
I
installing the Switch 19
prerequisites 20
IP addressing
3C number 22
3Com Knowledgebase Web Services 65
3Com URL 65
IP configuration 28
A
access levels of default users 44
automatic setup 36
3Com Network Supervisor 36
L
LEDs 15
B
M
browsers
management
methods 39
preparing for 30
manual setup 31
console port 33
front panel port 31
MDI configuration 24
MDIX configuration 24
MIBs 66
C
cable
pin-outs 57
Cascade Extender Kit 23
Cascade Stacking Kit 23
CD-ROM
9
command line interface
N
network supplier support 66
conventions
notice icons, About This Guide
8
text, About This Guide
8
O
D
P
default
passwords
settings 18
users 44
of default users 44
pin assignments
modem cable 58
null modem cable 57
RJ45 58
E
Ethernet address of the Switch 22
serial cable 57
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72
pin-outs 57
ports
console 17
power socket 17
product name 22
rack mounting 21
RPS socket 17
size 61
system specifications 61
product name 22
T
technical support
R
3Com Knowledgebase Web Services 65
3Com URL 65
network suppliers 66
product repair 68
troubleshooting 45
RPS 17
U
URL 65
S
safety information
English 52
W
French 53
German 55
Web browsers
choosing 42
web interface
choosing a browser 42
web interface management 40
setting up 42
SNMP 43
SNMP management 40
World Wide Web (WWW) 65
socket
power 17
software features 13
Switch 4400
3C number 22
console port 17
dimensions 61
Ethernet address 22
features 12, 13
initial setup 30
installation 19, 20
MAC address 22
manual setup 31
power socket 17
powering-up 23
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REGULATORY NOTICES
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference to radio communications, in which case the user will be required to
correct the interference at their own expense.
INFORMATION TO THE USER
If this equipment does cause interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
I
I
I
I
Reorient the receiving antenna.
Relocate the equipment with respect to the receiver.
Move the equipment away from the receiver.
Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits.
If necessary, the user should consult the dealer or an experienced radio/television technician for additional
suggestions. The user may find the following booklet prepared by the Federal Communications Commission
helpful:
How to Identify and Resolve Radio-TV Interference Problems
This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No.
004-000-00345-4.
In order to meet FCC emissions limits, this equipment must be used only with cables which comply with IEEE
802.3.
CSA STATEMENT
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur
du Canada.
CE STATEMENT (EUROPE)
VCCI STATEMENT
This product complies with the European Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC as
amended by European Directive 93/68/EEC.
Warning: This is a class A product. In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
BSMI STATEMENT
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|