SuperStack®3
Switch 3300 XM, SM, TM, MM User Guide
3C16985B, 3C16987A, 3C16986A, 3C16988A
http://www.3com.com/
Part No. DUA1698-5AAA04
Published November 2001
3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145
Copyright © 2001, 3Com Technologies. 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 Technologies.
3Com Technologies reserves the right to revise this documentation and to make changes in content from time
to time without obligation on the part of 3Com Technologies to provide notification of such revision or
change.
3Com Technologies 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 herein 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) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights 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.
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not
be registered in other countries.
3Com and SuperStack are registered trademarks of 3Com Corporation. The 3Com logo, is a trademark of
3Com Corporation.
Novell and NetWare are registered trademarks of Novell Incorporated.
Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
All other company and product names may be trademarks of the respective companies with which they are
associated.
Environmental Statement
It is a 3Com policy to be environmentally friendly in all operations. This manual is printed on paper that comes
from sustainable, managed European forests. The production process for making the pulp has a reduced AOX
level (adsorbable organic halogen) resulting in elemental chlorine-free paper.
The paper is fully biodegradable and recyclable.
C
ONTENTS
A
BOUTTHISGUIDE
Conventions 8
Related Documentation 9
Documentation Comments 10
Product Registration 10
I
NTRODUCING THESWITCH
1
3300 XM, SM, TM, MM
About the Switch 12
Summary of Features 12
Switch — Front View Detail 13
10BASE-T/
100BASE-TX Ports 14
1000BASE-SX Port (SM only) 14
1000BASE-T Port (TM only) 14
LEDs 14
Switch — Rear View Detail 16
Unit Information Label 16
Power Socket 16
Redundant Power System Socket 16
Console Port 17
Matrix Port 17
Network Configuration Examples 18
Switch as a Segmentation Switch 18
Switch as a Collapsed Backbone Switch 19
Switch as a Desktop Switch 20
Configuration Rules for Fast Ethernet 21
Configuration Rules with Full Duplex 22
Configuration Rules for Gigabit Ethernet (SM and TM) 23
Configuration Rules for the 3300 SM and TM 23
NSTALLING THESWITCH
2
I
Choosing a Suitable Site 26
Rack-mounting 27
PlacingUnitsOnTopofEachOther 28
Stacking Units 29
Stacking Two Units 29
Stacking Up To Four Units 30
The Power-up Sequence 32
Connecting a Redundant Power System 32
Powering-up the Switch 32
Checking for Correct Operation 32
Choosing the Correct Cables 33
Solving Problems Indicated by LEDs 34
Managing the Switch 34
A
B
C
D
AFETYINFORMATION
S
Important Safety Information 36
L’information de Sécurité Importante 38
Wichtige Sicherheitsinformationen 40
OUTS
PIN-
Null Modem Cable 43
PC-AT Serial Cable 43
Modem Cable 44
RJ45 Pin Assignments 44
ECHNICALSPECIFICATIONS
T
Switch 3300 XM, SM and MM 47
Switch 3300 TM 48
ECHNICALSUPPORT
T
Online Technical Services 51
World Wide Web Site 51
3Com Knowledgebase Web Services 51
3Com FTP Site 52
Support from Your Network Supplier 52
Supportfrom3Com 52
Returning Products for Repair 54
LOSSARY
G
NDEX
I
EGULATORYNOTICES
R
A
BOUTTHIS
G
UIDE
This guide provides all the information you need to install and use a
SuperStack
3300 TM (3C16986A) or 3300 MM (3C16988A) unit with default
settings. If you want to change the way the Switch works using
management software, refer to the “SuperStack Switch Management
Guide”.
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
differs 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:
http://www.3com.com/
All the Switches mentioned in this guide are compatible with the
Switches found within the SuperStack 1100/3300 family range.
®
3 Switch 3300 XM (3C16985B), 3300 SM (3C16987A),
8 ABOUT THIS GUIDE
Conventions Table 1 and Table 2 list conventions that are used throughout this guide.
Ta b l e 1
Icon Notice Type Description
Ta b l e 2
Convention Description
Screen displays
Syntax
Commands
The words “enter”
and “type”
Keyboard key names If you must press two or more keys simultaneously, the key
Notice Icons
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
Text Conventions
This typeface represents information as it appears on the
screen.
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>.
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
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.”
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
Related Documentation 9
Related Documentation
Ta b l e 2
Convention Description
Words in italics Italics are used to:
Text Conventions (continued)
■
Emphasize a point.
■
Denote a new term at the place where it is defined in the
text.
■
Identify menu names, menu commands, and software
button names. Examples:
From the Help menu, select Contents.
Click OK.
In addition to this guide, each Switch 3300 XM, SM, TM, MM document
set includes the following:
■
Management Guide
This guide contains all the management information for the Switch. It
is supplied on the SuperStack Switch CD-ROM.
■
Quick Reference Guide
This guide contains a quick summary of the hardware and software
information for the Switch.
■
Quick Installation Guide
This guide contains a summary of the package contents, and a quick
summary of the installation information for the Switch.
■
Release Notes
These notes provide information about the current software release,
including new features, modifications, and known problems.
■
SuperStack Switch Help
This help provides information about the web interface software of
the Switch. It is supplied on the SuperStack Switch CD-ROM.
■
SuperStack Switch README File
This file provides information about the current software release,
including new features, modifications, and known problems. It is
supplied on the SuperStack Switch CD-ROM.
10 ABOUT THIS GUIDE
In addition, there are other publications you may find useful:
Documentation accompanying the Advanced Redundant Power
■
System.
Documentation Comments
Product Registration
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:
pddtechpubs_comments@3com.com
Please include the following information when commenting:
Document title
■
Document part number (on the title page)
■
Page number (if appropriate)
■
Example:
SuperStack3Switch3300XM,SM,TM,MMUserGuide
■
Part Number DUA1698-5AAA04
■
Page 21
■
YoucannowregisteryourSuperStackSwitchonthe3Comwebsiteto
receive up-to-date information on your product:
http://support.3com.com/registration/frontpg.pl
NTRODUCING THESWITCH
I
1
3300 XM, SM, TM, MM
This chapter contains introductory information about the Switch and how
itcanbeusedinyournetwork.Itcoversthefollowingtopics:
■
About the Switch
■
Switch — Front View Detail
■
Switch — Rear View Detail
■
Network Configuration Examples
■
Configuration Rules for Fast Ethernet
■
Configuration Rules with Full Duplex
■
Configuration Rules for Gigabit Ethernet (SM and TM)
■
Configuration Rules for the 3300 SM and TM
12 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
About the Switch The SuperStack
your existing 10Mbps devices.
■
high-performance workgroups with a 100Mbps or 1000Mbps
■
®
3 Switch 3300 XM, SM, TM, or MM connects:
backbone or server connection.
users to dedicated 100Mbps ports in one switch.
■
®
In addition, as part of the 3Com
SuperStack 3 range of products, you
can combine it with any SuperStack II or SuperStack 3 system as your
network grows.
Summary of Features The Switch has the following hardware features:
24 Fast Ethernet auto-negotiating 10BASE-T/100BASE-TX ports
■
1000BASE-SX Gigabit Ethernet port (SM only)
■
1000BASE-T Gigabit Ethernet port (TM only)
■
One Matrix Port on the rear of the Switches 3300 SM, TM and XM for
■
connecting units in the Switch 1100/3300 family to form a stack. This
enables you to connect two units back-to-back using a single Matrix
Cable
Three Matrix Ports on the rear of the Switch 3300 MM allow you to
■
connect a total of four units in the Switch 1100/3300 family together
using Matrix Cables
SuperStack architecture
■
Connects to Redundant Power System/Advanced Redundant
■
Power System
19-inch rack or stand-alone mounting
■
For information about the software features of the Switch, refer to the
“SuperStack Switch Management Guide”.
Switch — Front View Detail
Figure 1
Switch — Front View Detail 13
Switch 3300 SM — front view
10BASE-T / 100BASE-TX
green
1x
13x
6x 7x
18x 19x
12x
24x
10BASE-T/100BASE-TX Ports
=enabled, link OK
flashinggreen
=disabled, link OK
4
7
112
13
13
8
3
665
4
7
2
8
3
5
151516
1818191920
14
17
16
20
14
17
Port Status LEDs
1000BASE-SX
111112
9
10
Packet
12
9
10
Status
232324
212122
Packet
24
22
Status
1000BASE-SX Port
Figure 2
1x
13x
6x 7x
18x 19x
10BASE-T / 100BASE-TX Ports
Switch 3300 XM — front view
10BASE-T / 100BASE-TX
green
12x
24x
=enabled, link OK
flashinggreen
=disabled, link OK
4
7
112
3
4
2
3
13
151516
14
13
16
14
111112
8
9
665
10
7
5
1818191920
17
17
Packet
12
Status
8
9
10
232324
212122
Packet
20
24
22
Status
Port Status LEDs Power / Self Test LED
Unit
2
1
4
3
Power/Self Test
6
5
7
8
SuperStack3
Switch 3300 SM
Power / Self Test LED
Unit LED
Unit
1
2
4
3
Power/Self Test
5
6
7
8
SuperStack3
Switch 3300XM
Unit LED
Figure 3
1x
13x
6x 7x
18x 19x
Switch 3300 TM — front view
10BASE-T / 100BASE-TX
green
12x
24x
=enabled, link OK
flashinggreen
=disabled, link OK
4
7
112
3
665
4
7
2
3
5
13
151516
1818191920
14
17
13
16
20
14
17
Packet
111112
8
9
10
Status
12
8
9
10
Packet
232324
212122
24
Status
22
1000BASE-T
Unit
1
3
5
7
2
4
6
8
Power/Self Test
Switch 3300 TM
SuperStack3
10BASE-T/100BASE-TX Ports
Port Status LEDs
1000BASE-T Port
Figure 4
1x
13x
10BASE-T/100BASE-TX Ports
6x 7x
18x 19x
Switch 3300 MM — front view
10BASE-T / 100BASE-TX
green
12x
24x
=enabled, link OK
flashinggreen
=disabled, link OK
4
7
112
13
13
8
9
3
665
10
4
7
2
8
9
3
5
10
151516
1818191920
14
17
212122
16
20
14
17
22
Port Status LEDs
111112
232324
Packet
12
Status
Packet
24
Status
Matrix
Power / Self Test LED
Unit LED
Unit
2
1
4
3
Power/Self Test
6
5
7
8
SuperStack3
Switch 3300 MM
Power / Self Test LED
Unit LED
14 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
10BASE-T/
100BASE-TX Ports
1000BASE-SX Port
(SM only)
1000BASE-T Port
(TM only)
LEDs Table 3 (overleaf) lists the LEDs visible on the front of the Switch, and
The Switch has 24 auto-negotiating 10BASE-T/100BASE-TX ports
configured as MDIX (cross-over). These ports can be set to 10BASE-T half
duplex, 10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full
duplex, or they can automatically detect the speed and duplex mode of a
link and provide the appropriate connection. The maximum segment
length is 100m (328ft) over Category 5 twisted pair cable.
As these ports are configured as MDIX (cross-over), you need to use a
cross-over cable to connect to devices whose ports are MDIX-only. See
“Choosing the Correct Cables” on page 33 for more information.
The Switch has a Gigabit Ethernet Port that provides a 1000Mbps
connection to another Gigabit Ethernet device. This port uses 62.5 µµµµmor
50 µµµµm multimode fiber optic cable with MT-RJ duplex connectors.
The Switch has a Gigabit Ethernet Port that provides a 1000Mbps
connection to another Gigabit Ethernet device. This port requires either a
straight-through or a cross-over Category 5 cable with RJ-45 connectors
at both ends.
their states according to color. For information on using the LEDs for
problem solving, see “Solving Problems Indicated by LEDs” on page 34.
Switch — Front View Detail 15
.
Ta b l e 3 LED behavior
LED Color Indicates
Port Status LEDs
Packet Yellow Packets are being transmitted/received on the port.
Off No packets are being transmitted/received on the
port.
Status Green A link is present, and the port is enabled.
Green flashing A link is present, but the port is disabled.
Off No link is present.
Unit LEDs
1–8 Green The Switch forms a stack with other Switch units;
Off The Switch is stand-alone.
Power/Self Test LED
Green The Switch is powered-up.
Green flashing The Switch is either downloading software or is
Yellow The Switch has failed its Power On Self Test.
Off The Switch is not receiving power.
the LED indicates the position of the Switch in the
stack and that a link is present. Note that although
there are eight LEDs, only four Switch units can be
stacked at present.
initializing (which includes running a Power On Self
Test).
16 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
Switch — Rear View Detail
Figure 5
Switch 3300 XM, SM and TM— rear view
Unit Information Label
Switch 3300 XM 24 Port
3C16985A
MAC Addr: XXXXXXXXXX
Serial XXXXXXXXXXXX
Console
(max)19200,8,1,N
Matrix Port
Power Socket
Power Socket
Unit Information
Label
Redundant Power System Socket
Figure 6
Redundant Power System Socket
Switch 3300 MM — rear view
Unit Information Label
Switch 3300 MM 24 Port
3C16988
MAC Addr: XXXXXXXXXX
Serial XXXXXXXXXXXX
This label shows the following:
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
■
Console Port Matrix Port
Console
(max)19200,8,1,N
Unit 2 Unit 4
Console Port
Unit 3
Matrix Ports
You may need this information for fault reporting purposes.
Power Socket The Switch automatically adjusts its power setting to any supply voltage
in the range 100–240V A.C. (XM, SM and MM only) or in the range
90–240V A.C. (TM only).
Redundant Power
System Socket
To protect against internal power supply failure, you can use this socket
to connect a SuperStack Advanced Redundant Power System (ARPS) to
the Switch. See “Connecting a Redundant Power System” on page 32.
Switch — Rear View Detail 17
Console Port The console port allows you to connect a terminal and perform remote or
local out-of-band management. The console port uses standard null
modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop
bit.
Matrix Port The Matrix Port allows you to:
■
Stack the Switch 3300 SM, TM or XM with another unit in the Switch
1100/3300 family using a single Matrix Cable
■
Stack the Switch 3300 MM with up to three other units in the Switch
1100/3300 family, using up to three Matrix Cables
For more information about the role of the Matrix Port, see “Stacking
Units” on page 29.
18 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
Network Configuration Examples
Switch as a
Segmentation Switch
The following illustrations show some examples of how the Switch can be
used in your network.
The example in Figure 7 shows how a Switch 3300 SM/XM stack can
segment a network of shared 10Mbps and 100Mbps and 1000Mbps
connections. There is a 10/100 shared segment on each floor, and these
segments are connected to the Switch which is positioned in the
basement. The Switch 3300 SM also provides a Gigabit Ethernet
connection to a local server.
Figure 7
Local server on a shared
100Mbps connection
Using the Switch to segment your network
Endstations on shared 10Mbps
Dual Speed Hub 500
and 100Mbps connections
100Mbps
Local server on a shared
100Mbps connection
Dual Speed Hub 500
Switch 3300 SM/XM stack
1000Mbps
Endstations on shared 10Mbps
and 100Mbps connections
Endstations and servers on switched 10Mbps,
100Mbps and 1000Mbps connections
XM
SM
Network Configuration Examples 19
Switch as a Collapsed
Backbone Switch
The example in Figure 8 shows how a Switch 3300 TM stack can act as a
backbone for both shared and switched network segments.
Figure 8
Endstations on
shared 10Mbps
and 100Mbps
connections
Endstations on
shared 10Mbps
and 100Mbps
connections
Using the Switch as a collapsed backbone
Endstations on
switched 10Mbps
connections
Switch 1100
Dual Speed Hub 500
Endstations on
switched 10Mbps
connections
Switch 1100
Dual Speed Hub 500
Endstations on switched
10Mbps connections
100Mbps
Switch 3300 TM stack
Servers on dedicated
1000Mbps connections
20 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
Switch as a Desktop
Switch
The example in Figure 9 shows how the Switch can be used for a group
of users that require dedicated 10Mbps or 100Mbps connections to the
desktop. The 3300 SM Switch provides a Gigabit Ethernet connection to
a SuperStack II Switch 4900 in the basement and the 3300 TM Switch
provides a Gigabit Ethernet connection to a local server.
Figure 9
Using the Switch in a desktop environment
Switch 3300:
SM
TM
Local server on a switched
XM
1000Mbps connection
MM
Endstations on switched 10Mbps
or 100Mbps connections
1000Mbps
Switch 4900
Configuration Rules for Fast Ethernet 21
Configuration Rules forFastEthernet
The topology rules for 100Mbps Fast Ethernet are slightly different to
those for 10Mbps Ethernet. Figure 10 illustrates the key topology rules
and provides examples of how they allow for large-scale Fast Ethernet
networks.
Figure 10
Fast Ethernet configuration rules
22 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
The key topology rules are:
Maximum UTP cable length is 100m (328ft) over Category 5 cable.
■
A 412m (1352ft) fiber run is allowed for connecting switch-to-switch,
■
or endstation-to-switch, using half-duplex 100BASE-FX.
A total network span of 325m (1066ft) is allowed in single-repeater
■
topologies (one hub stack per wiring closet with a fiber run to the
collapsed backbone). For example, a 225m (738ft) fiber link from a
repeater to a router or switch, plus a 100m (328ft) UTP link from a
repeater out to the endstations.
Configuration Rules with Full Duplex
The Switch provides full duplex support for all its ports. Full duplex allows
packets to be transmitted and received simultaneously and, in effect,
doubles the potential throughput of a link.
With full duplex, the Ethernet topology rules are the same, but the Fast
Ethernet rules are:
Maximum UTP cable length is 100m (328ft) over Category 5 cable.
■
A 2km (6562ft) fiber link is allowed for connecting switch-to-switch,
■
or endstation-to-switch.
Configuration Rules for Gigabit Ethernet (SM and TM) 23
Configuration Rules for Gigabit Ethernet (SM and TM)
Gigabit Ethernet is designed to run over four media:
■
Single-mode fiber optic cable, with connections up to 5km.
■
Multimode fiber optic cable, with connections up to 550m.
■
Balanced, shielded copper cabling, with connections up to 25m.
■
Category 5 cabling, with connections up to 100m.
Ta b l e 4
Gigabit Ethernet
Transceivers
1000BASE-LX
1000BASE-SX
1000BASE-CX
1000BASE-T
MM = Multimode
Gigabit Ethernet cabling
Fiber Type
62.5 µmMM
50 µmMM
50 µmMM
10 µmSM
62.5 µmMM
62.5 µmMM
50 µmMM
50 µmMM
N/A
N/A
SM = Single-mode
Modal
Bandwidth
(MHz/km)
500
400
500
N/A
160
120
400
500
N/A
N/A
Lengths Supported
Specified by IEEE
(meters)
2–550
2–550
2–550
2–5000
2–220
2–275
2–500
2–550
25
100
Configuration Rules for the 3300 SM and TM
The SM Switch has a Gigabit Ethernet fiber optic 1000BASE-SX port
while the TM switch has a 1000BASE-T port. These ports provide a
1000Mbps full duplex connection to another Gigabit Ethernet device. Full
duplex allows packets to be transmitted and received simultaneously and,
in effect, doubles the potential throughput of a link.
For the SuperStack 3 Switch 3300 SM:
■
Use Multimode fiber optic cable (see Table 4 for details).
■
The 1000BASE-SX port is permanently fixed at 1000Mbps with full
duplex.
FortheSuperstack3Switch3300TM:
■
the maximum UTP cable length is 100m (328ft) over Category 5 cable.
■
The 1000BASE-T port is permanently fixed at 1000Mbps with full
duplex.
24 CHAPTER 1: INTRODUCING THE SWITCH 3300 XM, SM, TM, MM
2
I
NSTALLING THE
This chapter contains the information you need to install and set up the
Switch. It covers the following topics:
■
Choosing a Suitable Site
■
Rack-mounting
■
Placing Units On Top of Each Other
■
Stacking Units
■
The Power-up Sequence
■
Choosing the Correct Cables
■
Solving Problems Indicated by LEDs
■
Managing the Switch
WARNING: Safety Information. Before installing or removing any
components from the Switch 3300 XM, SM, TM or MM or carrying out
any maintenance procedures, you must read the safety information
provided in Appendix A of this guide.
S
WITCH
AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever
tout composant du Switch 3300 XM, SM, TM ou MM ou d'entamer une
procédure de maintenance, lisez les informations relatives à la sécurité
qui se trouvent dans l'Appendice A de ce guide.
WARNHINWEIS: Sicherheitsinformationen. Bevor Sie Komponenten
aus dem Switch 3300 XM, SM, TM oder MM entfernen oder dem Switch
Switch 3300 XM, SM, TM oder MM hinzufuegen oder
Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen,
die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.
26 CHAPTER 2: INSTALLING THE SWITCH
Choosing a Suitable Site
The Switch is suited for use in an office environment where it can be
mounted in a standard 19-inch equipment rack, or free standing.
Alternatively, the Switch can be rack-mounted in a wiring closet or
equipment room. A rack-mounting kit, containing two mounting
brackets and four screws, is supplied with the Switch.
When deciding where to position the Switch, ensure that:
You are able to meet the configuration rules detailed in
■
“Configuration Rules for Fast Ethernet” on page 21.
The Switch is accessible and cables can be connected easily.
■
The switch is situated away from sources of conductive (electrical)
■
dust, for example, laser printers
The AC supply used by the Switch is separate to that used by units
■
that generate high levels of AC noise, for example air conditioning
units and laser printers
Cabling is away from:
■
Sources of electrical noise such as radios, transmitters and
■
broadband amplifiers
Power lines and fluorescent lighting fixtures
■
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. We recommend that you provide a minimum of
25mm (1in.) clearance.
No more than four Switch units are placed on top of one another, if
■
the units are free standing.
If used in an office environment, the switch is positioned so that any
■
noise from the fan is not disruptive.
Rack-mounting 27
Rack-mounting
The Switch is 1U high and fits 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.
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 11.
Figure 11
Fitting a bracket for rack mounting
3 Insert the two screws and tighten with a suitable screwdriver.
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.
28 CHAPTER 2: INSTALLING THE SWITCH
Placing Units On TopofEachOther
If the Switch units are free-standing, up to four units can be placed one
on top of the other. If you are mixing a variety of SuperStack 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 29
Stacking Units
Units in the Switch 1100/3300 family can be stacked together and then
treated as a single manageable unit with one IP address.
TheMatrixPortontherearoftheSwitchSM,TMandXMallowsyouto
connect two Switch units back-to-back. For this you need a Matrix Cable
(part number 3C16965). Contact your supplier for details.
The three Matrix Ports on the rear of the Switch MM allow you to
connect a total of four units in the Switch 1100/3300 family together
using Matrix Cables.
The Switches in a stack are numbered 1 to 4, from the bottom up, for
management purposes. The SuperStack 3 Switch 3300 MM will always
be identified as Unit 1 and should therefore be positioned at the bottom
of the stack.
Only one SuperStack 3 Switch 3300 MM unit can be fitted per stack.
Stacking Two Units You can stack two Switch units with a single Matrix Cable. To do this:
1 Power-off both units.
2 Arrange the units as required. If you are using a Switch 3300 MM it must
be positioned at the bottom of the Stack. They can be rack-mounted or
free-standing; if you choose to have them free-standing, remember to
position the rubber feet as detailed in “Placing Units On Top of Each
Other” on page 28. When positioning the units, note that Matrix Cables
are 1m (3.28ft) long.
3 Connect one end of the Matrix Cable to the Matrix Port of the top
Switch, and the other end to the Matrix Port of the lower Switch (See
Figure 12).
4 If you use the management software of the units:
■
Ensure that both units have the same version of management
software
■
Ensure that you re-configure the stack-wide features on both units
For more information about management software, see “Managing the
Switch” on page 34.
30 CHAPTER 2: INSTALLING THE SWITCH
Figure 12 A stack of two units
Stacking Up To Four
Units
You can stack up to four Switch units using one Switch 3300 MM and
the appropriate number of Matrix Cables.
Only one SuperStack 3 Switch 3300 MM unit can be fitted per stack.
TostackuptofourSwitchunits:
1
Power-off all the units.
2
Arrange the units as required. They can be rack-mounted or
free-standing; if you choose to have them free-standing, remember to
position the rubber feet as detailed in “Placing Units On Top of Each
Other” on page 28. When positioning the units, note that Matrix Cables
are 1m (3.28ft) long.
3
Connect the Matrix Cables, as shown in Figure 13:
a
Connect a Matrix Cable to the port marked Unit 2 on the
Switch 3300 MM. Connect the other end of this cable to the Matrix
Port on the Switch placed immediately above the Switch 3300 MM.
b
Connect a second Matrix Cable to the port marked Unit 3 on the
Switch 3300 MM. Connect the other end of this cable to the Matrix
Port on the next Switch up.
c
Connect a third Matrix Cable to the port marked Unit 4 on the
Switch 3300 MM. Connect the other end of this cable to the Matrix
Port on the Switch at the top of the stack.
Stacking Units 31
4 If you use the management software of the units:
■
Ensure that all the units have the same version of management
software
■
Ensure that you re-configure the stack-wide features on all the units
For more information about management software, see “Managing the
Switch” on page 34.
Figure 13
A stack of three units
Switch 1100/3300
Switch 3300 SM
Switch 3300 MM
32 CHAPTER 2: INSTALLING THE SWITCH
The Power-up Sequence
Connecting a
Redundant Power
Powering-up the
System
Switch
The following sections describe how to get your Switch 3300 XM, SM,
TM or MM powered-up and ready for operation.
You can connect a SuperStack Advanced Redundant Power System (part
number 3C16071B) to the Switch. This unit, which is also known as an
ARPS, is 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. For
full redundancy, the unit requires two Type 2A Power Modules combined
using a Type 2 Y-Cable.
Check with your supplier that you have the correct Power Modules and
cables for your ARPS unit.
CAUTION: The Switch can only use a SuperStack Advanced Redundant
Power System output.
Use the following sequence of steps to power-up the Switch.
CAUTION: The Switch has no ON/OFF switch; the only method of
connecting or disconnecting main power is by connecting or
disconnecting the power cord.
Checking for Correct
Operation
1 Plug the power cord into the power socket at the rear of the Switch.
2 Plug the other end of the power cord into your power outlet
The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately 12 seconds.
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in the following sequence:
All unit LEDs light
■
Port Status LEDs light in a rapid cycle
■
WhenthePOSThascompleted,checkthePower/SelfTestLEDtocheck
that your Switch is operating correctly. Table 5 shows possible colors for
the LED.
Choosing the Correct Cables 33
Choosing the Correct Cables
Ta b l e 5
Color State
Green The Switch is powered-up and
Yellow The Switch has failed its Power On Self
Off The Switch is not receiving power.
LED colors
operating normally
Test. This occurs if any of the ports fail
during power-up.
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 34.
All of the ports on the front of the Switch 3300 XM, SM, TM and MM are
configured as MDIX (cross-over). If you want to make a connection to
another MDIX port, you need a cross-over cable. Most of the 10BASE-T
and 100BASE-TX ports on 3Com devices are MDIX-only. Many ports on
workstations and servers are configured as MDI (straight-through). If you
want to make a connection to an MDI port, you need to use a standard
straight-through cable. This is illustrated in Figure 14.
Figure 14
Connecting other devices to the Switch
34 CHAPTER 2: INSTALLING THE SWITCH
Solving Problems Indicated by LEDs
If the LEDs on the Switch indicate a problem, refer to Table 6 which
contains a list of problems and suggested solutions.
Ta b l e 6
Problem Suggested Solution
APowerLEDdoesnot
light
On powering-up, the
Power/Self Test LED
lights yellow and a
Unit LED lights green
A link is connected and
yet the Status LED for
the port does not light
Problems indicated by LEDs
Check that the power cable is firmly connected to the
relevant Switch unit and to the supply outlet. If the
connection is secure and there is still no power, you may
have a faulty power cord.
The relevant Switch unit has failed its Power On Self Test
(POST) because of an internal problem. Contact your
supplier for advice.
Check that:
All connections are secure.
■
The devices at both ends of the link are powered-up.
■
The connection uses cross-over cable if you are
■
linking a 10BASE-T or 100BASE-TX port with a device
that is MDIX-only.
For information about solving problems when managing the Switch, refer
to the Problem Solving chapter in the “SuperStack Switch Management
Guide”.
Managing the Switch
The Switch contains software that allows you to change and monitor the
way it works. This management software is not required to get the
Switch working, but if you do use it, you may improve the efficiency of
the Switch and therefore improve the overall performance of your
network. For information on managing the Switch using the
management software, refer to the “SuperStack Switch Management
Guide”.
A
S
AFETYINFORMATION
You must read the following safety information before carrying out any
installation or removal of components, or any maintenance procedures
on the Switch 3300 XM, SM, TM or MM.
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: Lesavertissementsprésentent 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.
WARNHINWEIS: 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.
36 APPENDIX A: SAFETY INFORMATION
Important Safety Information
Installation and removal of the unit must be carried out by qualified
■
personnel only.
If installing the Switch unit in a stack with SuperStack Hub units, the
■
Switch 3300 XM, SM, TM or MM unit must be installed below the
Hub units.
The unit should never be connected to an A.C. outlet (power supply)
■
without an earth (ground) connection.
The unit must be connected to an earthed (grounded) outlet to
■
comply with European safety standards.
Power Cord Set:
■
This must be approved for the country where it is used:
U.S.A. and
Canada
Denmark
Switzerland
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
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.
The supply plug must comply with section 107-2-D1,
■
standard DK2-1a or DK2-5a.
The supply plug must comply with SEV/ASE 1011.
■
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.
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.
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.
Switzerland only:
■
The supply plug must comply with SEV/ASE 1011.
Important Safety Information 37
■
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.
■
U.K. only:
The Switch 3300 XM, SM, TM or MM is covered by Oftel General
Approval, NS/G/12345/J/100003, for indirect connection to a public
telecommunications system. This can only be achieved using the
console port on the unit and an approved modem.
■
Sockets for Redundant Power System (RPS):
Only connect an Advanced Redundant Power System (3C16071B)
with Type 2A Power Modules and Type 2 cables to the Redundant
Power System socket.
WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They
cannot be used as telephone sockets. Only connect RJ-45 data
connectors to these sockets.
Either shielded or unshielded data cables with shielded or unshielded
jacks can be connected to these data sockets.
WARNING: Fiber Optic ports - Optical Safety.
Never look at the transmit laser through a magnifying device while it is
powered on. Never look directly at the fiber port and fiber cable ends
when they are powered on.
38 APPENDIX A: SAFETY INFORMATION
L’information de Sécurité Importante
L'installation et la dépose de ce groupe doivent être confiés à un
■
personnel qualifié.
Si vous entassez l'unité Switch avec les unités SuperStack Hub, l'unité
■
Switch 3300 XM, SM, TM ou MM doit être installée en dessous des
unités Hub plus étroites.
L’unité ne devrait pas etre branchee a une prise de courant C.A.
■
(source de courant) sous aucun prétexte sans un branchement mise à
la terre (mise à la masse).
Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la
■
masse) afin de respecter les normes européennes de sécurité.
Cordon électrique:
■
Il doit être agréé dans le pays d'utilisation:
Etats-Unis et
Canada
Danemark
Suisse
Le cordon doit avoir reçu l'homologation des UL et un
■
certificat de la CSA
Le cordon souple doit respecter, à titre minimum, les
■
spécifications suivantes :
calibre 18 AWG
■
type SV ou 5J
■
à 3 conducteurs
■
Le cordon doit être en mesure d'acheminer un courant
■
nominal d'au moins 10 A
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)
La prise mâle d'alimentation doit respecter la section 107-2
■
D1 de la norme DK2 1a ou DK2 5a
La prise mâle d'alimentation doit respecter la norme SEV/ASE
■
1011
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.
La prise secteur doit se trouver à proximité de l’appareil et son accès
■
doit êtrefacile.Vousnepouvezmettrel’appareil hors circuit qu'en
débranchant son cordon électrique au niveau de cette prise.
L’information de Sécurité Importante 39
■
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.
■
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).
■
Branchez uniquement un Advanced Redundant Power System
(3C16071B) avec Type 2A Power Modules et Type 2 câbles sur la
prise femelle du Redundant Power System.
AVERTISSEMENT: Les ports RJ-45. Il s'agit de prises femelles blindées
de données RJ-45. Vous ne pouvez pas les utiliser comme prise de
téléphone. Branchez uniquement des connecteurs de données RJ-45 sur
ces prises femelles.
Les câbles de données blindés ou non blindés, avec les jacks blindésou
non blindés, l'un ou l'autre, peuvent être branchés à cesprisesdecourant
de données.
AVERTISSEMENT: Ports pour fibres optiques - sécurité sur le plan
optique.
Ne regardez jamais le laser d'émission en utilisant un dispositif
d'agrandissement, tant qu'il est sous tension. Ne regardez jamais
directement le port à fibres optiques et les embouts de câbles à fibres
optiques tant qu'ils sont sous tension.
40 APPENDIX A: SAFETY INFORMATION
Wichtige Sicherheitsinformat ionen
Die Installation und der Ausbau des Geräts darf nur durch
■
Fachpersonal erfolgen.
Wenn die Switch 3300 XM, SM, TM oder MM Einheit in einer Stapel
■
mit anderen SuperStack Hub Einheiten eingebaut werden soll, muß
die Switch 3300 XM, SM, TM oder MM Einheit unter die schmaleren
Hub Einheiten eingebaut werden.
Das GerätistunterkeinenumständenaneinenWechselstrom(A.C.)
■
Netzstecker anzuschließen ohne erdungsleitung.
Das Gerätmuß an eine geerdete Steckdose angeschlossen werden,
■
die die europäischen Sicherheitsnormen erfüllt.
Der Anschlußkabelsatz muß mit den Bestimmungen des Landes
■
übereinstimmen, in dem er verwendet werden soll.
Der Gerätestecker (der Anschluß an das Gerät, nicht der
■
Wandsteckdosenstecker) muß eine passende Konfiguration füreinen
Geräteeingang gemäß EN60320/IEC320 haben.
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.
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.
Nur ein Advanced Redundant Power System (3C16071B) mit Type 2A
■
Power Modules und Type 2 kabel an den Redundant Power System
Anschluß anschließen.
WARNHINWEIS: RJ-45 Ports. RJ-45-Anschlüsse. Dies sind
abgeschirmte RJ-45-Datenbuchsen. Sie können nicht als
Telefonanschlußbuchsen verwendet werden. An diesen Buchsen dürfen
nur RJ-45-Datenstecker angeschlossen werden.
Diese Datenstecker können entweder mit abgeschirmten oder
unabgeschirmten Datenkabeln mit abgeschirmten oder unabgeschirmten
Klinkensteckern verbunden werden.
Wichtige Sicherheitsinformationen 41
WARNHINWEIS: Faseroptikanschlüsse - Optische Sicherheit.
Niemals mit einem VergrößerungsgeräteinenÜbertragungs-Laser
betrachten, während dieser eingeschaltet ist. Niemals direkt auf den Faser
Anschluß und auf die Faserkabelenden schauen, während diese
eingeschaltet sind.
42 APPENDIX A: SAFETY INFORMATION
PIN-
OUTS
B
Null Modem Cable 9-pin to RS-232 25-pin
Switch 3300 XM, SM, TM, MM
Cable connector: 9-pin female
Screen
TxD
RxD
Ground
RTS
CTS
DSR
DCD
DTR
Shell
3
2
5
7
8
6
1
4
PC-AT Serial Cable 9-pin to 9-pin
Switch 3300
Cable connector: 9-pin female
Screen
DTR
TxD
RxD
CTS
Ground
DSR
RTS
DCD
XM, SM, TM, MM
Shell
4
3
2
8
5
6
7
1
PC/Terminal
Cable connector: 25-pin male/female
1
3
2
7
4
20
5
6
8
PC-AT Serial Port
Cable connector: 9-pin female
Shell
1
2
3
4
5
6
7
8
Screen
RxD
TxD
Ground
RTS
DTR
CTS
DSR
DCD
Screen
DCD
RxD
TxD
DTR
Ground
DSR
RTS
CTS
only required ifscreen
always required
required for handshake
only required ifscreen
always required
required for handshake
always required
required for handshake
44 APPENDIX B: PIN-OUTS
Modem Cable 9-pin to RS-232 25-pin
RJ45 Pin Assignments
Switch 3300
Cable connector: 9-pin female
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
XM, SM, TM, MM
Shell
3
2
7
8
6
5
1
4
RS-232 Modem Port
Cable connector: 25-pin male
1
2
3
4
5
6
7
8
20
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45
connectors
Ta b l e 7
Pin Number Signal Function
Ports configured as MDI
1 TxData + Transmit data
2 TxData – Transmit data
3 RxData + Receive Data
4 Not assigned
5 Not assigned
6 RxData – Receive data
7 Not assigned
8 Not assigned
Pin assignments
RJ45 Pin Assignments 45
Ta b l e 7 Pin assignments
Pin Number Signal Function
Ports configured as MDIX
1 RxData + Receive Data
2 RxData – Receive Data
3 TxData + Transmit data
4 Not assigned
5 Not assigned
6 TxData – Transmit data
7 Not assigned
8 Not assigned
46 APPENDIX B: PIN-OUTS
T
ECHNICALSPECIFICATIONS
C
Switch 3300 XM, SM and MM
Physical Dimensions Height: 43.6mm x Width: 440mm x Depth: 247.5mm
Weight: 5kg (11lbs)
Environmental Requirements
Operating Temperature 0° to 40°C(32° to 104°F)
Storage Temperature –10° to +70°C(14° to 158°F)
Operating Humidity 10–95% relative humidity, non-condensing
Standards EN60068 (IEC68) — various parts
Safety
Agency Certifications UL 60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions EN55022 Class A, FCC Part 15 subpart B Class A, ICES-003 Class A,
VCCI Class A, AS/NZS 3548 Class A, CNS 13438 Class A
Immunity EN50082-1
Heat Dissipation 75 watts maximum
Power Supply
AC Line Frequency 50/60Hz
Input Voltage Options 100–240 VAC
Current Rating 1.5 amps (maximum)
(continued)
48 A
PPENDIX
C: T
ECHNICALSPECIFICATIONS
Standards Supported SNMP
SNMP protocol (RFC 1157)
MIB-II (RFC 1213)
Bridge MIB (RFC 1493)
Repeater MIB (RFC 1516)
VLAN MIB (RFC 1573)
RMON MIB (RFC 1271)
BOOTP (RFC 951)
Terminal Emulation
Telnet (RFC 854)
Protocols Used for Administration
UDP (RFC 768)
IP (RFC 791)
ICMP (RFC 792)
TCP (RFC 793)
ARP (RFC 826)
TFTP (RFC 783)
Switch 3300 TM
Physical Dimensions Height: 43.6mm x Width: 440mm x Depth: 247.5mm
Weight: 5kg (11lbs)
Environmental Requirements
Operating Temperature 0° to 50°C(32° to 122°F)
Storage Temperature –10° to +70°C(14° to 158°F)
Operating Humidity 10–95% relative humidity, non-condensing
Standards EN60068 (IEC68) — various parts
Safety
Agency Certifications UL 1950, EN60950, CSA 22.2 No. 950, IEC 60950
EMC
Emissions EN55022 Class A, FCC Part 15 subpart B Class A, ICES-003 Class A,
VCCI Class A, AS/NZS 3548 Class A, CNS 13438 Class A
Immunity EN50082-1
Heat Dissipation 75 watts maximum
Power Supply
AC Line Frequency 50/60Hz
Input Voltage Options 90–240 VAC
Current Rating 3 amps (maximum)
(continued)
Switch 3300 TM 49
Standards Supported SNMP
SNMP protocol (RFC 1157)
MIB-II (RFC 1213)
Bridge MIB (RFC 1493)
Repeater MIB (RFC 1516)
VLAN MIB (RFC 1573)
RMON MIB (RFC 1271)
BOOTP (RFC 951)
Terminal Emulation
Telnet (RFC 854)
Protocols Used for Administration
UDP (RFC 768)
IP (RFC 791)
ICMP (RFC 792)
TCP (RFC 793)
ARP (RFC 826)
TFTP (RFC 783)
50 A
PPENDIX
C: T
ECHNICALSPECIFICATIONS
D
T
ECHNICALSUPPORT
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
World Wide Web Site To access the latest networking information on the 3Com Corporation
3Com
Knowledgebase Web
Services
3Com offers worldwide product support 24 hours a day, 7 days a week,
through the following online systems:
■
World Wide Web site
■
3Com Knowledgebase Web Services
■
3Com FTP site
World Wide Web site, enter this URL into your Internet browser:
http://www.3com.com/
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.
The 3Com Knowledgebase is a database of technical information to help
you install, upgrade, configure, or support 3Com products. The
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:
http://knowledgebase.3com.com
52 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:
Hostname:
■
Username:
■
Password:
■
You do not need a user name and password with Web browser software
such as Netscape Navigator and Internet Explorer.
ftp.3com.com
anonymous
<your Internet e-mail address>
Support from Your Network Supplier
Support from 3Com
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:
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.
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:
Product model name, part number, and serial number
■
Support from 3Com 53
■
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
Indonesia
Japan
Malaysia
New Zealand
Pakistan
Philippines
Europe, Middle East and
Africa
From anywhere in these
regions, call:
Europe and South Africa
From the following countries, you may use the toll-free numbers:
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
Latin America
Brazil
Mexico
1 800 678 515
800 933 486
+61 2 9937 5085 or
000800 6501111
001 800 61 009
0531 616 439
1800 801 777
0800 446 398
+61 2 9937 5083
1235 61 266 2602
+44 (0)1442 435529 phone
+44 (0)1442 432524 fax
0800 297468
0800 71429
800 17309
0800 113153
0800 917959
0800 1821502
06800 12813
1800 553117
1800 9453794
800 8 79489
0800 13 3266
01 800 849CARE
P.R. of China
Singapore
S. Korea
Taiwan
Thailand
Luxembourg
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
Puerto Rico
Central and South America
10800 61 00137 or
021 6350 1590 or
00800 0638 3266
800 6161 463
00798 611 2230 or
02 3455 6455
00798 611 2230
0080 611 261
001 800 611 2000
0800 3625
0800 0227788
800 11376
00800 3111206
0800 831416
0800 995014
900 983125
020 795482
0800 55 3072
0800 966197
800 666 5065
AT&T +800 998 2112
North America
1800NET3Com
(1 800 638 3266)
Enterprise Customers:
1 800 876-3266
54 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
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
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
U.S.A. and Canada 1 800 NET 3Com
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
0800 297468
0800 71429
800 17309
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
(1 800 638 3266)
Enterprise Customers:
1 800 876 3266
1 408 326 7120
(not toll-free)
G
LOSSARY
10BASE-T The IEEE specification for 10Mbps Ethernet over Category 3, 4 or 5
twisted pair cable.
100BASE-FX The IEEE specification for 100Mbps Fast Ethernet over fiber-optic cable.
100BASE-TX The IEEE specification for 100Mbps Fast Ethernet over Category 5
twisted-pair cable.
1000BASE-SX The IEEE specification for 1000Mbps Gigabit Ethernet over fiber-optic
cable.
1000BASE-T The IEEE specification for 1000Mbps Gigabit Ethernet over Category 5
twisted-pair cable.
auto-negotiation A feature on twisted pair ports that allows them to advertise their
capabilities for speed, duplex and flow control. When connected to a
port that also supports auto-negotiation, the link can automatically
configure itself to the optimum setup.
backbone The part of a network used as a primary path for transporting traffic
between network segments.
bandwidth The information capacity, measured in bits per second, that a channel
can transmit. The bandwidth of Ethernet is 10Mbps, the bandwidth of
Fast Ethernet is 100Mbps.
baud The signalling rate of a line, that is, the number of transitions (voltage
or frequency changes) made per second. Also known as line speed.
bridge A device that interconnects two LANs of a different type to form a
single logical network that comprises of two network segments.
Bridges learn which endstations are on which network segment by
examining the source addresses of packets. They then use this
56 GLOSSARY
information to forward packets based on their destination address. This
process is known as filtering.
broadcast A packet sent to all devices on a network.
broadcast storm Multiple simultaneous broadcasts that typically absorb all the available
network bandwidth and can cause a network to fail. Broadcast storms
can be due to faulty network devices.
collision AtermusedtodescribetwocollidingpacketsinanEthernetnetwork.
Collisions are a part of normal Ethernet operation, but a sudden
prolonged increase in the number of collisions can indicate a problem
with a device, particularly if it is not accompanied by a general increase
in traffic.
CSMA/CD Carrier-sense Multiple Access with Collision Detection. The protocol
defined in Ethernet and IEEE 802.3 standards in which devices transmit
only after finding a data channel clear for a period of time. When two
devices transmit simultaneously, a collision occurs and the colliding
devices delay their retransmissions for a random length of time.
endstation A computer, printer or server that is connected to a network.
Ethernet A LAN specification developed jointly by Xerox, Intel and Digital
Equipment Corporation. Ethernet networks use CSMA/CD to transmit
packets at a rate of 10Mbps over a variety of cables.
Ethernet address See MAC address.
Fast Ethernet An Ethernet system that is designed to operate at 100Mbps.
forwarding The process of sending a packet toward its destination using a
networking device.
filtering The process of screening a packet for certain characteristics, such as
source address, destination address, or protocol. Filtering is used to
determine whether traffic is to be forwarded, and can also prevent
unauthorized access to a network or network devices.
flow control A congestion control mechanism. Congestion is caused by devices
sending traffic to already overloaded port on a Switch. Flow control
prevents packet loss and inhibits devices from generating more traffic
until the period of congestion ends.
57
full duplex A system that allows packets to be transmitted and received at the
same time and, in effect, doubles the potential throughput of a link.
half duplex A system that allows packets to transmitted and received, but not at
the same time. Contrast with full duplex.
hub A device that regenerates LAN traffic so that the transmission distance
of that signal can be extended. Hubs are similar to repeaters, in that
they connect LANs of the same type; however they connect more LANs
than a repeater and are generally more sophisticated.
IEEE Institute of Electrical and Electronics Engineers. This American
organization was founded in 1963 and sets standards for computers
and communications.
IEEE 802.1D A standard that defines the behavior of bridges in an Ethernet network.
IETF Internet Engineering Task Force. An organization responsible for
providing engineering solutions for TCP/IP networks. In the network
management area, this group is responsible for the development of the
SNMP protocol.
IP Internet Protocol. IP is a layer 3 network protocol that is the standard
for sending data through a network. IP is part of the TCP/IP set of
protocols that describe the routing of packets to addressed devices.
IPX Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocol
designed for networks that use Novell Netware.
IP address Internet Protocol address. A unique identifier for a device attached to a
network using TCP/IP. The address is written as four octets separated
with periods (full-stops), and is made up of a network section, an
optional subnet section and a host section.
LAN Local Area Network. A network of endstations (such as PCs, printers,
servers) and network devices (hubs and switches) that cover a relatively
small geographic area (usually not larger than a floor or building). LANs
are characterized by high transmission speeds over short distances (up
to 1000m).
line speed See baud.
58 GLOSSARY
MAC address Media Access Control address; also called hardware or physical address.
loop An event that occurs when two network devices are connected by
more than one path, thereby causing packets to repeatedly cycle
around the network and not reach their destination.
MAC Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.
A layer 2 address associated with a particular network device. Most
devices that connect to a LAN have a MAC address assigned to them
as they are used to identify other devices in a network. MAC addresses
are 6 bytes long.
MDI Medium Dependent Interface. An Ethernet port connection where the
transmitter of one device is connected to the receiver of another
device.
MDI-X Medium Dependent Interface Cross-over. An Ethernet port connection
where the internal transmit and receive lines are crossed.
multicast A packet sent to a specific group of endstations on a network.
NIC Network Interface Card. A circuit board installed in an endstation that
allows it to be connected to a network.
POST Power On Self Test. An internal test that a Switch carries out when it is
powered-up.
protocol A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.
repeater A simple device that regenerates LAN traffic so that the transmission
distance of that signal can be extended. Repeaters are used to connect
two LANs of the same network type.
router A device that provides WAN links between geographically separate
networks.
RPS Redundant Power System. A device that provides a backup source of
power when connected to a Switch.
segment A section of a LAN that is connected to the rest of the network using a
switch or bridge.
server A computer in a network that is shared by multiple endstations. Servers
provide endstations with access to shared network services such as
computer files and printer queues.
SLIP Serial Line Internet Protocol. A protocol that allows IP to run over a
serial line (console port) connection.
SNMP Simple Network Management Protocol. The current IETF standard
protocol for managing devices on an TCP/IP network.
stack A group of network devices that are integrated to form a single logical
device.
STP See Spanning Tree Protocol (STP).
SuperStack In this guide, the generic term SuperStack refers to any SuperStack II
and SuperStack 3 device. SuperStack II and SuperStack 3 devices can be
connected together to form a SuperStack system.
switch A device that interconnects several LANs to form a single logical LAN
that comprises of several LAN segments. Switches are similar to
bridges, in that they connect LANs of a different type; however they
connect more LANs than a bridge and are generally more sophisticated.
59
Switch Database A database that is stored by a switch to determine if a packet should
be forwarded, and which port should forward the packet if it is to be
forwarded.
TCP/IP Transmission Control Protocol/Internet Protocol. This is the name for
two of the most well-known protocols developed for the
interconnection of networks. Originally a UNIX standard, TCP/IP is now
supported on almost all platforms, and is the protocol of the Internet.
TCP relates to the content of the data travelling through a network —
ensuring that the information sent arrives in one piece when it reaches
its destination. IP relates to the address of the endstation to which data
is being sent, as well as the address of the destination network.
Te l ne t A TCP/IP application protocol that provides a virtual terminal service,
lettingauserlogintoanothercomputersystemandaccessadeviceas
if the user were connected directly to the device.
TFTP Trivial File Transfer Protocol. Allows you to transfer files (such as
software upgrades) from a remote device using the local management
capabilities of the Switch.
60 GLOSSARY
unicast A packet sent to a single endstation on a network.
WAN Wide Area Network. A communications network that covers a wide
area. A WAN can cover a large geographic area, and may contain
several LANs within it.
INDEX 61
NDEX
I
Numbers
1000BASE-SX port 14
1000BASE-T port 14
10BASE-T/100BASE-TX ports 14
3C number 16
3Com Knowledgebase Web Services 51
3Com URL 51
A
auto-negotiating ports 14
C
cable
choosing the correct 33
Matrix 17
maximum length 14, 22, 23
pin-outs 43
Choosing a Suitable Site 26
Collapsed Backbone Switch 19
Configuration Rules for the 3300 SM and TM 23
console port 17
conventions
notice icons, About This Guide 8
text, About This Guide 8
Correct Operation, Checking for 32
cross-over configuration 14, 33
D
Desktop Switch 20
E
Ethernet address of the Switch 16
F
Fast Ethernet configuration rules 21
full duplex configuration rules 22
G
Gigabit Ethernet configuration rules (SM and
TM) 23
glossary 55
H
hardware features 12
I
installing the Switch 25
prerequisites 26
L
LEDs 14
solving problems indicated by 34
Light Emitting Diodes. See LEDs
M
MAC address of the Switch 16
management software 34
managing the Switch 34
Matrix Cable 17
matrix port 17
MDI configuration 33
MDIX configuration 14, 33
MIBs 52
N
network configuration examples 18
network supplier support 52
O
online technical services 51
P
pin assignments
modem cable 44
null modem cable 43
RJ45 44
serial cable 43
pin-outs 43
Ports
1000BASE-SX 14
1000BASE-T port 14
10BASE-T/100BASE-TX 14
62 INDEX
auto-negotiating 14
console 17
matrix 17
power socket 16
powering-up a Switch 32
Powering-up the Switch 32
Power-up sequence 32
product name 16
R
rack mounting a Switch 27
Redundant Power System. See RPS
returning products for repair 54
RPS 16
connecting 32
socket 16
S
safety information
English 36
French 38
German 40
segment, maximum length 14, 22
Segmentation switch 18
serial number of the Switch 16
serial port. See console port
Site
Choosing a Suitable Site 26
socket
power 16
RPS 16
specifications, system 47
stacking a Switch 29
Stacking Two Units 29
Stacking Up To Four Units 30
standards supported 48
Status LEDs 14
straight-through configuration 33
Switch
10BASE-T/100BASE-TX ports 14
3C number 16
as a Collapsed Backbone Switch 19
as a Desktop Switch 20
as a Segmentation Switch 18
console port 17
dimensions 47
Ethernet address 16
features 12
Front View Detail 13
installation 25, 26
MAC address 16
power socket 16
powering-up 32
product name 16
rack mounting 27
rear view 16
RPS socket 16
serial number 16
size 47
stacking 29
standards supported 48
unit information label 16
weight 47
Switch 3300 SM
1000BASE-SX port 14
Switch 3300 SM and TM
Configuration Rules for the 3300 SM and
TM 23
Switch 3300 TM
1000BASE-T port 14
Switch SM and TM
Gigabit Ethernet configuration rules 23
system specifications 47
T
Technical specifications 47
technical support
3Com Knowledgebase Web Services 51
3Com URL 51
network suppliers 52
product repair 54
topology rules for Fast Ethernet 21
topology rules with full duplex 22
U
unit information label 16
URL 51
W
World Wide Web (WWW) 51
REGULATORY NOTICES
FCC STATEMENT
CSA S
TATEMENT
CE STATEMENT (EUROPE)
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:
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.
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numériquedelaclasseArespectetouteslesexigencesduRèglement sur le matériel brouilleur
du Canada.
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.
VCCI S
BSMI S
TATEMENT
TATEMENT
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