3Com 2000 TR Switch User Manual

®
SUPERSTACK II SWITCH 2000 TR
TOKEN RING-IN-FAST ETHERNET MODULE
For SuperStack II Switch 2000 TR
http://www.3com.com/
Part No. 99045
Published October 1997
3Com Corporation
■
5400 Bayfront Plaza
© 3Com Corporation, 1997. 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 permission from 3Com Corporation.
3Com Corporation reserves the right to revise this documentation and to
make changes in content from time to time without obligation on the part
of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty of any
kind, either implied or expressed, including, but not limited to, the implied
warranties of merchantability 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.
UNITED STATES GOVERNMENT LEGENDS:
If you are a United States government agency, then this documentation
and the software described herein are provided to you subject to the
following restricted rights:
For units of the Department of Defense:
Restricted Rights Legend: Use, duplication or disclosure by the
Government is subject to restrictions as set forth in subparagraph (c) (1) (ii)
for restricted Rights in Technical Data and Computer Software clause at 48
C.F.R. 52.227-7013. 3Com Corporation, 5400 Bayfront Plaza, Santa Clara,
California 95052-8145.
For civilian agencies:
Restricted Rights Legend: Use, reproduction or disclosure is subject to
restrictions set forth in subparagraph (a) through (d) of the Commercial
Computer Software - Restricted Rights Clause at 48 C.F.R. 52.227-19 and
the limitations set forth in 3Com Corporation’s standard commercial
agreement for the software. Unpublished rights reserved under the
copyright laws of the United States.
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. If you are
unable to locate a copy, please contact 3Com and a copy will be provided
to you.
■
Santa Clara, California
■
95052-8154
Unless otherwise indicated, 3Com registered trademarks are registered in
the United States and may or may not be registered in other countries.
3Com, AccessBuilder, Boundary Routing, CardFacts, LanScanner,
LinkBuilder, NETBuilder, NETBuilder II, NetFacts, Parallel Tasking,
ViewBuilder, EtherDisk, EtherLink, EtherLink Plus, EtherLink II, SmartAgent,
SuperStack II, TokenLink, TokenLink Plus, TokenDisk and Transcend are
registered trademarks of 3Com Corporation. 3TECH, CacheCard, FDDILink,
FMS, NetProbe and Star-Tek are trademarks of 3Com Corporation.
3ComFacts, is a service mark of 3Com Corporation.
CompuServe is a registered trademark of CompuServe, Inc.
Other brand and product names may be registered trademarks or
trademarks of their respective holders
Guide written by Ken Wisman.
Installation 3-2
Post-Installation Checks 3-3
LED Summary 3-3
Checking the Power Supply 3-4
Checking that the TR-in-FE Module is Installed
Correctly 3-5
Checking the Physical Connections 3-5
Jumper Settings 3-6
ABOUT THIS GUIDE
Introduction 1
Terminology 1
Finding Information in this Guide
Conventions 2
1
2
OVERVIEW
About the SuperStack II Switch 2000 TR
TR-in-FE Module 1-1
TR-in-FE Benefits 1-2
Summary of TR-in-FE Module Features 1-3
Hardware 1-3
Software 1-3
2
INSTALLING AND SETTING UP THE MODULE
Following Safety Information 3-1
Pre-installation Procedure 3-1
ACCESSING MANAGEMENT FEATURES
The VT100 Console 4-1
Choice Field 4-1
Entry Field 4-1
Button 4-2
List Boxes 4-2
Key Board Shortcuts 4-2
Correcting Text Entries 4-2
Default Users 4-3
Console Menu Map 4-3
The LCD Console 4-5
Logging On 4-6
Logging Off 4-7
Automatic Logout 4-7
TR-IN-FE CONCEPTS
What is Token Ring-in-Fast Ethernet (TR-in-FE)? 2-1
TR-in-FE Compared to Traditional Methods 2-2
3Com Token Ring-in-Fast Ethernet System 2-2
Token Ring-in-Fast Ethernet Module 2-2
How TR-in-FE Works 2-3
Tunneling 2-5
Requirements 2-5
Token Ring Frames 2-5
Virtual LANs (VLANS) 2-7
What is a VLAN 2-7
Advantages of VLAN 2-7
Port-Based Distribution 2-7
3
4
5
CONFIGURING THE TR-IN-FE MODULE
TR-in-FE Module Configuration Map 5-1
Setting Up a Module 5-2
Bridge Parameters 5-3
Spanning Tree 5-3
Source Routing 5-4
Setting Up a VLAN 5-5
TR VLAN Info Setup Screen 5-5
TR VLAN Setup Screen
6
5-5
Returning Products for Repair
MONITORING THE TR-IN-FE MODULE
3COM CORPORATION LIMITED WARRANTY
TR-in-FE Module Statistics Map 6-1
Statistics Overview 6-2
Port Statistics (Traffic) 6-3
Clearing Screen Counters 6-4
A
SAFETY INFORMATION
Important Safety Information A-1
L’information de Sécurité Importante A-1
Wichtige Sicherheitsinformationen A-2
B
SCREEN ACCESS RIGHTS
C
TR-IN-FE MODULE TECHNICAL SPECIFICATIONS
Environmental Specifications C-1
TR-in-FE Cable Specification C-1
Does the Cable Provide Sufficient Bandwidth?
Example C-2
D
TECHNICAL SUPPORT
Online Technical Services D-1
3Com Bulletin Board Service D-1
Access by Modem D-1
Access by ISDN D-1
World Wide Web Site D-1
3ComForum on CompuServe D-2
3ComFacts Automated Fax Service D-2
Support from Your Network Supplier D-2
Support from 3Com D-3
D-3
C-2
ABOUT THIS GUIDE
Introduction
This guide provides the information needed to install
and configure the SuperStack II Switch 2000 TR
Token Ring-in-Fast Ethernet (TR-in-FE) Module. For
more information about the switch itself, see the
SuperStack II Switch 2000 TR User Guide.
The SuperStack II Switch 2000 TR Token Ring-in-Fast
Ethernet Module Guide is intended for use by network administrators responsible for installing and
setting up networking equipment. It assumes a basic
working knowledge of Local Area Networks, Token
Ring Networks, and Ethernet. Basic TR-in-FE concepts are explained within this guide.
The Release Notes shipped with the TR-in-FE Module
may contain information that updates or overrides
information in this guide. You should always follow
the information in the Release Notes if it is different from the information given in this guide.
Terminology
In this manual the term TR-in-FE Module is used
when referring to the SuperStack II Switch 2000 TR
Token Ring-in-Fast Ethernet Module.
The device into which the TR-in-FE Module is fitted,
is known simply as the Switch. An example of a
Switch is 3Com’s SuperStack II Switch 2000 TR. This
type of switch is often referred to as an
edge-device, edge-switch or boundary switch.
Name used in guide:
Includes:
Switch 2000 TR
SuperStack II Switch 2000 TR
2
CHAPTER : ABOUT THIS GUIDE
Finding Information in this Guide
Conventions
The following table shows you where to find specific information within this guide.
Table 1 and Table 2 list icon and text conventions
that are used throughout this guide.
Table 1
Task
Location
Learning features,
benefits, and concepts
Chapter 1, “Overview”
Chapter 2, “TR-in-FE Concepts”
Planning your network
Chapter 1, “Overview”
Chapter 2, “TR-in-FE Concepts”
Chapter 3, “Installing And Setting Up The Module”
Appendix C, “TR-in-FE Module Technical Specifications”
Installing the
TR-in-FE Module
Accessing screens
Chapter 3, “Installing And Setting Up The Module”
Chapter 5, “Configuring The TR-in-FE Module”
Appendix A, “Safety Information”
Chapter 4, “Accessing Management Features”
Appendix B, “Screen Access Rights”
Monitoring
the Module
Chapter 6, “Monitoring The TR-in-FE Module”
Getting Technical
Support
Appendix D, “Technical Support”
Icon
Notice Icons
Type
Description
Information
Note
Important features or instructions.
Caution
Alerts you to personal safety risks, system
damage, or loss of data.
Warning
Risk of severe personal injury.
Table 2
Text Conventions
Convention
Description
Screen
display
This typeface is used to represent information as it
appears on the screen.
The words
“Enter” and
“Type”
The word “enter” means type something and then
press the Return or Enter key. Do not press the
Return or Enter key when an instruction simply says
“type.”
[Key] names
Key names appear in text in one of two ways:
■
Referred to by their labels, such as “the Return
key” or “the Escape key”.
■
Enclosed within brackets, such as [Return] or [Esc].
If you must press two or more keys simultaneously,
the key names are linked with a plus sign (+). For
example:
Press [Ctrl]+[Alt]+[Del].
Words in
bold
Bold text denotes key features.
1
OVERVIEW
This chapter describes the major features and benefits
of the SuperStack II Switch 2000 TR TR-in-FE Module,
including:
■
About the SuperStack II Switch 2000 TR TR-in-FE
Module
■
TR-in-FE Benefits
■
Summary of TR-in-FE Module Features
About the SuperStack II Switch 2000 TR
TR-in-FE Module
The SuperStack II Switch 2000 TR TR-in-FE module
combines Token Ring and Fast Ethernet (FE) for the
purpose of utilizing FE as a backbone and method of
high-speed server attachment for TR networks.
TR-in-FE complements ATM and FDDI methods of
high-speed integration by providing an option to help
TR users evolve their network’s core infrastructure
while preserving their existing equipment and applications.
TR-in-FE uses Fast Ethernet to transport natively formatted Token Ring frames. Both source route and
transparent TR frame addressing information is maintained through the FE infrastructure. This allows standard TR workstations and servers to use the fast
transport without modification, or special FE servers
to communicate to the native TR community.
1-2
CHAPTER 1: OVERVIEW
TR-in-FE Benefits
Increasingly, Token Ring users are deploying switches
to segment their networks and to increase available
bandwidth to their workgroups. This has resulted in a
demand for more server bandwidth as well as
high-speed aggregation and switching. Previously,
those users wanting their Token Ring server bandwidth increased beyond 32 Mbps faced limited
options. They could add either FDDI or ATM downlinks to their Token Ring switches–options that proved
costly and complex. The Token Ring-in-Fast Ethernet
(TR-in-FE) system offers a new, simpler option at a
much lower cost. TR-in-FE offers improvement in the
following areas:
■
■
■
Scalability
■
TR switching
■
High-speed technologies
■
Wire-speed performance
Flexibility
■
High-speed flexibility (choice of D/L technology)
■
Desktop flexibility (TR, Ethernet)
■
Common high-speed infrastructure
Managability
■
■
Simple to configure and administer
Cost effective
TR-in-FE allows both Token Ring and Ethernet to
share the same Fast Ethernet physical wiring infrastructure and server base without impacting network
performance. TR-in-FE accomplishes this by introducing routing or Source-Route to Transparent translational bridging.
Fast Ethernet is relatively well understood and easy to
configure. The TR-in-FE operates in both copper or
fiber optic environments. Additionally, many tools
exist to manage and administer Fast Ethernet due to
its wide acceptance in the industry and its similarity to
Ethernet.
TR-in-FE benefits those MIS managers most interested
in:
■
Preserving existing investments in TR infrastructure
■
Seeking low-cost, high-speed connectivity
■
Combining Ethernet and Token Ring for common
server access
Fast Ethernet is less expensive than other options,
such as FDDI and ATM. Using FE, the price per port
for server attachment is 20% that of ATM and FDDI.
TR switching allows the install base of TR equipment
and its configuration to remain intact and operational
while allowing for an upgrade to higher performance
through microsegmentation and interfaces to higher
speed technologies. TR-in-FE represents one option
for integrating Fast Ethernet into the TR switched
environment.
Summary of TR-in-FE Module Features
Summary of TR-in-FE Module Features
The following lists summarize the features of the
SuperStack II Switch 2000 TR TR-in-FE module.
Hardware
■
Multimode fiber attachment using duplex connectors or copper cable attachment using standard
RJ-45
■
Full duplex operation
■
Flow control
■
LEDs to indicate link integrity and link activity
■
Compliance with FCC Class A, CISPR A, and CE
■
4544 byte frame size for improved performance
■
Easy jumper-setting for crossover switch (copper
version only)
Software
■
Software configurable hardware
■
16 VLAN hardware support
■
IEEE 802.1q compatible
■
Frame size limiter of 1500 bytes for standard infrastructure
1-3
1-4
CHAPTER 1: OVERVIEW
2
TR-IN-FE CONCEPTS
This chapter provides an introduction to Token
Ring-in-Fast Ethernet concepts for users who are
unfamiliar with this technology. The following sections cover:
■
What is Token Ring-in-Fast Ethernet (TR-in-FE)?
■
TR-in-FE Compared to Traditional Methods
■
3Com Token Ring-in-Fast Ethernet System
■
How TR-in-FE Works
■
Tunneling
■
Virtual LANs (VLANS)
What is Token Ring-in-Fast Ethernet
(TR-in-FE)?
Token Ring-in-Fast Ethernet is a 3Com developed
technology that encapsulates Token Ring frames in
Fast Ethernet frames. Bridging the gap between
Token Ring and Ethernet, this technology offers a
more cost-effective integration than traditional bridging and routing, and allows Token Ring users to
expand their bandwidth while preserving their TR
infrastructure.
Using Token Ring-in-Fast Ethernet technology, Fast
Ethernet can be used as a cost-effective and scalable
aggregation point for multiple Token Ring switch connections. In addition, because both Token Ring and
Ethernet technologies can coexist in the same Fast
Ethernet infrastructure, both can share to less costly
Fast Ethernet connections.
Through a process known as tunneling (see the
“Tunneling” section below), TR-in-FE uses Fast Ethernet to transport natively formatted Token Ring
frames. This means that both source route and transparent TR frames addressing information is maintained through Fast Ethernet (FE) so that it may be
interpreted and utilized by either a destination Token
Ring (TR) switch or FE server.
2-2
CHAPTER 2: TR-IN-FE CONCEPTS
TR-in-FE Compared to Traditional Methods
Traditional means of combining Token Ring, Ethernet,
and Fast Ethernet include bridging and routing. With
routing, frame forwarding decisions are made in software by looking into the network layer of each frame
and modifying the frame to reflect the standard
format of the media for which it is destined.
Similarly, bridging between these media may be
accomplished using Translational Bridging, sometimes
referred to as SRTB or SRTG. This is necessary with
non-routable protocols like SNA and Netbios. This
type of bridging deals with all the differences
between Token Ring and Ethernet frame formats such
as:
TR-in-FE technology works, not by providing frame
conversion, but by using the Fast Ethernet as a transport for the Token Ring frames. This means that every
frame does not need to be parsed deeply, nor does
source route to transparent frame mapping need to
happen.
Presently, TR-in-FE is based on developing standards
and requires that FE server connections and Switch
2000 TR Downlink Modules are 3Com products.
Once approved, TR-in-FE will be able to be integrated
with other vendors. FE switching infrastructure may
be from any vendor.
3Com Token Ring-in-Fast Ethernet System
The 3Com Token Ring-in-Fast Ethernet includes:
■
Address fields
■
Variable length source-route fields
■
SuperStack II Switch 2000 TR
■
Functional address to multicast address mapping
■
SuperStack II Switch 2000 TR Token Ring-in-Fast
Ethernet Module
■
Fast Ethernet Switch (SuperStack II Switch 3000)
■
3Com Fast Ethernet network interface cards (NIC)
NetBuilder provides both routing and SRTG functionality. The decisions are, again, made in software and
the result is conversion of the source frame to a standard destination frame format. The benefit of the traditional means listed above is that all frames are
converted from media to media using standard frame
formats, which allows for simple mixing and matching of products from multiple vendors. The downside
is that these bridges and routers are typically slow,
expensive, and more difficult to manage than switch
products.
Token Ring-in-Fast Ethernet Module
This slide-in module provides a 200 Mbps Full-duplex
Fast Ethernet interface, which enables the Switch
2000 TR to become part of a Fast Ethernet switched
infrastructure. This module allows wire-speed transmission of Token Ring-in-Fast Ethernet frames. Fast
Ethernet can be used to connect Token Ring clients to
Fast Ethernet servers or as an aggregation point for
multiple Token Ring switched connections.
How TR-in-FE Works
2-3
How TR-in-FE Works
Figure 2-1 shows a diagram of a basic TR-in-FE system. The illustration depicts three Switch 2000 TRs
interfacing with a Switch 3000 through the Token
Ring-in-Fast Ethernet Module. In this example, the
Switch 3000 acts as an 800 Mbps point of aggregation for this system with multiple FDX Fast Ethernet
pipes feeding it.
Traffic that enters a port on the Token Ring switch
and that is not destined for another port on the same
switch is directed at the TR-in-FE Module. Subsequently, the module puts a Fast Ethernet wrapper
(see “Tunneling” section below) on the native Token
Ring frame, and forwards the modified packet as a
Fast Ethernet frame to the Switch 3000.
The Switch 3000 handles the frame as it would any
other FE frame and forwards it to the appropriate
port. If the destination address is another TR end station located on another switch, the destination
TR-in-FE Module strips the frame of the Fast Ethernet
information and sends the native TR frame to the
appropriate destination port. If the destination is a
Fast Ethernet attached server, the Fast Ethernet NIC
with a TR-in-FE driver interprets the frame before providing it to upper level applications. The fact that the
application communicates using TR-in-FE is transparent to the user.
k II
rStac
Supe
0 TR
0
2
h 0
Switc
k II
rStac
Supe
00 TX
0
3
h
Switc
t
therne
Fast E
r
e
v
r
Se
Fiber
Copper
Figure 2-1 A Simple Token Ring-in-Fast Ethernet
Configuration
Figure 2-2 illustrates another example of Token
Ring-in-Fast Ethernet, but one on a scale more exemplary of what a real user configuration looks like as
part of an integrated system.
2-4
CHAPTER 2: TR-IN-FE CONCEPTS
ssis
r Cha
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CoreB
et
thern
Fast E
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e
Serv
tack
uperS
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000 T
itch 1
II Sw
Dir
witch
II S
Stack
r
Supe
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thern
Fast E
s
r
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Serv
g
n Rin
Toke
s
r
e
v
r
Se
Supe
TX
3000
itch
R
II Sw ch 2000 T m
k
c
it
te
rSta
Supe tack II Sw ower Sys
P
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Supe edundant
II R
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ta
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Figure 2-2 Large scale example of a TR-in-FE configuration.
2000
TR
ttac
ect a
tions
rksta
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S
Tunneling
2-5
Tunneling
Token Ring Header Information
This section describes tunneling, the method by
which Token Ring frames are encapsulated (embedded) within Ethernet frames.
Frames are sets of bits that form an elementary block
of data to be sent over a communications channel. A
frame contains its own control information, including
the transmission address and data for error detection.
This header information makes certain that the
frames arrive with their payload (user data) intact and
at the right destination. Simply put, what tunneling
does is to take a Token Ring frame and embed it into
an Ethernet frame to be sent over a Fast Ethernet network.
Requirements
The tunneling scheme must be compatible with Fast
Ethernet networks so that a mix of Ethernet, 802.3,
and the Ethernet/Token Ring (E/TR) frames may reside
on the same segment without interference. It is also
important that any end station (server, bridge, router)
be able to reassemble the original TR frame. Source
routing from Token Ring to Ethernet and back to
Token Ring should be supported.
Token Ring Frames
Figure 2-3 shows a simplified drawing of a Token Ring
frame.
Payload
AC
FC
nDA
nSA
RIF (optional)
Key
AC–Access Control Field
FC–Frame Control Field
nDA–Non-canonical Destination
Address Field
User Data
FCS
nSA–Non-canonical Source
Address Field
RIF–Route Information Field
FCS–Frame Check Sequence
Figure 2-3 Token Ring Frame.
The Token Ring frame must be specially tagged when
preparing it for embedding inside the Ethernet frame.
Tagging allows an Ethernet frame to carry:
■
User priority information over media types otherwise unable to signal priority information
■
Token Ring data in native format (802.5) over
non-802.5 media
■
VLAN identification information
Tagging requires the addition of a tag header to each
frame. This header is inserted immediately following
the Destination Address (DA), Source Address (SA),
and, if present, the Routing Information Field (RIF). If
the source and destination media differ, tagging the
frame may involve translation or encapsulation of the
frame remainder. Tagging also requires re-computation of the Frame Check Sequence (FCS), which are
extra characters added to frames for error control
purposes.
2-6
CHAPTER 2: TR-IN-FE CONCEPTS
The Tag Header carries a Tag Protocol Identifier (TPID)
that identifies the frame as a Tagged Frame. The
Header also carries Tag Control Information (TCI),
which consists of the following fields:
■
User Priority
■
TR-encap
■
VLAN Identifier (VID)
Header Information for Ethernet/Token Ring (E/TR) Frames
Payload
cDA cSA TPID
TCI
LEN
RCNTL RDs
User Data
PAD FCS
Key
cDA–Canonical Destination Address Field
The User Priority field allows the tagged frame to
carry user priority information across bridged LANs
where individual LAN segments may not be able to
signal for priority information. An 802.3/Ethernet represents such a segment.
The primary purpose of the TR-encap flag is to permit
tunneling of Tagged Frames between two 802.5 LAN
segments across a VLAN tagged region. It also allows
an end station on an 802.5 subnetwork to communicate with an end station on an 802.3 subnetwork.
The VLAN Identifier (VID) field uniquely identifies the
VLAN to which a frame belongs. See the next section,
“Virtual LANs (VLANS),” for a complete explanation
of VLANs and the VLAN Identifier (also known as
VLAN ID or VID). The Route Control field is added to
the frame to carry TR specific information such as
Transparent or SR information. The payload is TR specific in content.
Once the tunneling process is complete, the combined Token Ring-in Fast Ethernet frame resembles
the frame shown in Figure 2-4 (simplified). The process is reversed to de-encapsulate the frame.
cSA–Canonical Source Address Field
TPID–Tag Protocol Identifier Field
TCI–Tag Control Information Field, which includes User Priority, TR-encap, VLAN ID
LEN–Length in octets of RCNTL + RDs + User Data Fields
RCNTL–Route Control Field
RDs–Route Descriptor (0...n) from the original frame
PAD–Ethernet frames must be at least 64 bytes in length
FCS–Frame Check Sequence
Figure 2-4 Token Ring-in-Fast Ethernet Frame.
Virtual LANs (VLANS)
Virtual LANs (VLANS)
What is a VLAN
A VLAN is defined as a group of location- and topology- independent devices that communicate as
though they were on the same physical LAN. This
means that they are not restricted by the hardware
that physically connects them, and segments are
defined by flexible user groups created by the user.
For example, with VLANS, the user can define a network according to:
Department Groups—A VLAN could be created for
the Marketing Department, another VLAN for the
Finance Department, and still another for the Development Department.
Hierarchical Groups—A VLAN could be created for
directors, another for managers, and still another for
general staff.
Usage Groups—A VLAN could be created for Email
users, another for multimedia users, and so on.
Advantages of VLAN
All 802 media and shared media support VLANs. In
addition, implementing VLANs:
■
Eases the change of devices
■
Helps control broadcast traffic
■
Provides extra security
2-7
VLANs facilitate the administration of logical groups
of stations that can communicate as though they
were on the same LAN. VLANs also facilitate moves,
adds, and changes of members of logical groups.
Traffic between VLANs is firewalled. This limits the
propagation of multicast and broadcast traffic
between VLANs.
Each distinct VLAN is uniquely identified throughout
the bridged LAN. A consistent representation of a
VLAN exists across a VLAN fabric (including FE and
ATM). This means that the shared VLAN knowledge
of a particular packet remains the same as the packet
travels from one point to another.
Port-Based Distribution
The switch uses a port-based approach to VLAN
functionality. This approach allows bridges to classify
all received tagged and untagged frames as belonging to a particular VLAN.
NOTE: In port-based VLAN operation, the VLAN classification of an untagged frame is implicitly determined and bases on the port of arrival of the frame.
This facility requires association of a VLAN ID with
each of the bridge’s ports. Only received frames lacking an explicit VLAN ID are subject to this impilcit classification.
Using the port-based approach, a specific VLAN ID is
associated with each bridge port. This VLAN ID,
known as a Port VLAN Idendtifier (PVID), provides the
VLAN classification for frames received through that
port. This value may be manager configured.
2-8
CHAPTER 2: TR-IN-FE CONCEPTS
3
INSTALLING AND SETTING UP THE MODULE
This chapter includes important safety and configuration information, including:
■
Following Safety Information
■
Pre-installation Procedure
■
Installation
■
Post-Installation Checks
Following Safety Information
WARNING:Before installing or removing any components of a device, or carrying out any maintenance
work, you must read the safety information provided
in Appendix A, “Safety Information” of this guide.
Disconnect the device from the main power supply.
AVERTISSEMENT:Il faut lire les notices de sécurité
dans l’appendice A de ce guide avant d’installer ou
d’enlever les parties de l’unité ou faire le travail
d’entretien. Débrancher la pièce de raccordement
d’alimentation.
WARNUNG:Bevor Sie Ein - oder Ausbau des Gerätes
vornehmen, butte lessen Sie die Anweisungen in
Appendix A genau durch. Das Gerät darf nicht ans
Stromnetz angeschlossen sein.
CAUTION:Only hold the TR-in-FE Module by the
edges to avoid damage from static. Do not touch the
top or bottom of the circuit board.
Pre-installation Procedure
Before installing the TR-in-FE Module familiarize yourself with the module and the Switch into which it will
be installed.
3-2
CHAPTER 3: INSTALLING AND SETTING UP THE MODULE
maximum inter-station distance (including
device-to-network connectors) should not exceed
two kilometers (1.25 miles) for full duplex. For half
duplex, the maximum inter-station distance should
not exceed 300 meters.
Installation
This section explains how to install the TR-in-FE
Module into a SuperStack II Switch 2000 TR device.
Installation is similar for all devices compatible with
the TR-in-FE Module.
■
CAUTION: Always follow Electro Static Discharge
(ESD) procedures when installing an I/O Module.
1 If the Switch is connected to the network, turn off the
power and disconnect the switch from the main
power supply and the network.
2 Place the Switch on a flat, clean, hard, work surface.
3 Locate and remove the blanking plate that covers the
switch Module slot. See Figure 3-1. Retain the blanking plate and the screws for future use.
To locate the slot where the TR-in-FE Module resides,
refer to the manual that accompanies your device .
4 Use the guide rails within the Switch slot to align the
TR-in-FE Module. The location of the guide rails and
the correct positioning of the plate is shown in
Figure 3-1.
5 Slide the TR-in-FE Module into the slot without touch-
ing the top or bottom of the circuit board, which
positions upside down on the plate. Ensure that the
module is pushed fully into the unit.
6 Use the thumb screws attached to the TR-in-FE
Module to fix the module firmly into place.
7 Connect the cable to the TR-in-FE port.
■
For fiber: 3Com supports multi-mode fiber
50/125 mm and an SCduplex connector. The
For copper: 3Com supports Category 5 type UTP
cable at distances up to 100 m for both half and
full duplex.
For more on cable specifications, see Appendix C,
“TR-in-FE Module Technical Specifications”.
8 Connect the cable to the module. Connect the Rx
connector to the port’s Tx socket. Connect the Tx
connector to the port’s Rx socket. Do the same at the
other end of the connection.
■
For fiber: Each end of the fiber cable has a transmit (Tx) and receive (Rx) connector.
■
For copper: A crossover cable may be required for
operation, which requires a jumper setting on the
module. See“Jumper Settings” in this chapter.
9 Connect the downlink port to a Fast Ethernet
repeater, server, or switch. If you plan running full
duplex, ensure that the other end of the link supports
it. A repeater will not support full duplex whereas a
switch such as the SuperStack 3000 will.
NOTE: The Fast Ethernet switch does not have to be a
SuperStack II 3000. However, due to the 3000’s capability of handling frame sizes larger than 1500 bytes
as well as its cost efficiency, the 3000 is the switch of
preference for anchoring the system.
10 Power up the switch. The link status LED turns green
once a valid connection is made.
Post-Installation Checks
Token Ring-in-Fast Ethernet Module
Rx
Far End Status
Tx
Link Status
Rx
3-3
3C510630
Tx
Reset
Console Port
9600,8,1,N
Figure 3-1 Installing the TR-in-FE Module
Post-Installation Checks
This section describes the LEDs and basic checks used
to verify your installation, and to ensure that the
Switch and TR-in-FE Module operate correctly.
LED Summary
This section describes the LEDs that provide status
and troubleshooting information.
■
LEDs on the Switch are described in Table 3-1.
■
LEDs on the TR-in-FE Module are described in
Table 3-2.
3-4
CHAPTER 3: INSTALLING AND SETTING UP THE MODULE
Table 3-1 Front Panel LEDs on the Switch 2000 TR
LED Name
Color/State
MGMT
Green ON
(On the front of
the Switch)
Green fast
flashing
Indicates
LED Name
Color/State
Indicates
Switch and TR-in-FE Module are operating normally.
Full Duplex
Green ON
Full duplex link is on (port configured for full duplex operation).
Software download taking place.
The Switch and TR-in-FE Module are
initializing (for example, undergoing
a Power On Self Test).
Yellow
The Switch failed its Power On Self
Test (POST).
Yellow flash- TR-in-FE Module failed its Power On
Self Test (POST).
ing
Green ON
Downlink
Status
(On front of the
Switch)
Green flashing
(On TR-in-FE Module)
Green OFF
Green slow
flashing
OFF
Table 3-2 LEDs on the TR-in-FE Module Panel
Port Status
(On TR-in-FE Module)
TX
(On TR-in-FE Module)
A link is present on the Ethernet port.
Green OFF
The Link is not present on the
Ethernet Port.
Yellow ON
The TR-in-FE port is transmitting.
OFF
The TR-in-FE port is not transmitting frames.
Yellow ON
The TR-in-FE port is receiving
frames.
OFF
The TR-in-FE port is not receiving incoming frames.
Green ON
RJ-45 configured as a crossover.
Green OFF
RJ-45 configured as a static
connector.
No power to the Switch.
TR-in-FE port enabled and a link is
present.
Link present but TR-in-FE port disabled.
Yellow ON
Switch has not recognized the
TR-in-FE Module.
Yellow flashThe TR-in-FE Module has failed the
ing
Power On Self Test (POST).
OFF
A link is not present on the TR-in-FE
port.
The following table describes the LED functions on
the TR-in-FE Module.
RX
(On TR-in-FE Module)
MDIX (copper only)
Half duplex link is on.
Green ON
Checking the Power Supply
Check the MGMT LED on the Switch. If the MGMT
LED is not lit, there is a power supply problem. Try the
following troubleshooting procedures, restarting the
Switch after each step:
Post-Installation Checks
a Check that the power supply is plugged into the
device using a power outlet that is known to be
working or that the RPS is powered.
b Check that the main power supply switch on the
wall is set to the ON position.
c Check and, if necessary, change the fuse on the
Switch or plug. See the user guide that accompanies your Switch device for details about fuses.
d Replace the power cable with a cable known to be
working.
e Contact 3Com Technical Support.
Checking that the TR-in-FE Module is Installed
Correctly
Power up the Switch and check that the Downlink
Status LED on the front of the Switch is lit Green.
If the MGMT LED is not lit Green, remove and then
re-install the TR-in-FE module.
You can confirm that the TR-in-FE Module is installed
correctly by accessing the local management screens
or the LCD panel. If the TR-in-FE Module is installed
correctly, the TR-in-FE Configuration option appears
in the Main Menu.
If the TR-in-FE Configuration option does not appear,
It could be that the TR-in-FE Module is still initializing.
If the TR-in-FE Module is still initializing, the MGMT
LED flashes GREEN.
3-5
Checking the Physical Connections
This section assumes that the TR-in-FE Module is correctly installed.
Check that the Link Status LED on the TR-in-FE
Module is lit GREEN. If the LED is not lit, there is a
problem with the physical connection. Follow the
troubleshooting information below:
a Ensure that both devices are powered up, and that
the ports at both ends of the link are enabled.
b Ensure that the cable is securely connected to the
port at both ends of the link.
c If using fiber, check each end of the cable to
ensure that each of the fiber connectors is correctly
connected. If your cable connectors can be
reversed, you may need to reverse the TX and RX
cable connectors at one end of the link.
d If using copper, the TX and RX pairs may need to
be swapped. This requires changing the jumper
setting on the module. See “Jumper Settings.”
e Ensure that the fiber connection is not broken.
Some cable connectors have been designed so that
they cannot be fitted incorrectly. Never use excessive
force to connect cables.
f If you are running full duplex, make certain that
the Fast Ethernet switch supports this mode. A
repeater will not support full duplex whereas a
switch such as the SuperStack 3000 will.
g Remove any objects obstructing the cable and
straighten out any kinks in the cable.
3-6
CHAPTER 3: INSTALLING AND SETTING UP THE MODULE
h Check that your cable meets Fast Ethernet specifi-
cations. See Appendix C.
i
Replace the cable, and check the Link Status LED
again.
j
Contact 3Com Technical Support; see “Support
from 3Com”, in Appendix D.
Jumper Settings
The Module can be easily damaged by electrostatic
discharge. Before handling the module, please
observe safety and electrostatic discharge precautions.
You can configure the TR-in-FE module to operate as
MDI (default) or MDIX. Follow the rules and procedure below. See Figure 3-2.
■
■
MDI—If TR-in-FE module is connected to another
switch with an MDIX port.
MDIX—IIf TR-in-FE module is connected to an endstation or server.
The MDIX setting provides a crossover, the MDI setting does not.
A crossover cable can be used to connect two MDI or
two MDIX ports together.
,
,
LK1
MDIX
MDI
Port configured
as MDI (default)
Port configured
as MDIX
Figure 3-2 TR-in-FE Module Jumper Settings
,
,
4
ACCESSING MANAGEMENT FEATURES
The menu-driven user interface built into the device is
known as the VT100 or Local Management interface.
The VT100 management interface has a forms-based
structure with pre-defined security levels, enabling
access to be restricted to particular users. This chapter
provides information on the following:
The VT100 Console
This section describes the screen conventions used in
the Switch 2000 TR VT100 console interface. The
VT100 interface allows you to set and/or view these
switch parameters:
■
The VT100 Console
■
IP and associated addresses and management
■
Console Menu Map
■
Port personality, speed, and state
■
The LCD Console
■
■
Logging On
Bridge type, bridge number, and Spanning Tree
state
■
Logging Off
■
Switch 2000 TR status and hardware and software
version numbers
The manual that accompanies your SuperStack II
Switch 2000 TR describes accessing and navigating
local screens.
Choice Field
Example display:
*text*
Text enclosed with asterisks is a list from which you
can select one option. Press [Space] to cycle through
the options. When your choice is highlighted, press
[Down Arrow] or [Return] to move to the next field.
Refer to Figure 4-1,“VT100 Console Menu Map with
I/O Module Detail.”
Entry Field
Example display:
[text]
4-2
CHAPTER 4: ACCESSING MANAGEMENT FEATURES
Text enclosed in square brackets on the screen indicates a text entry field. This field may be text, numeric
data, or hexadecimal data.
Password fields are hidden; the text you type is not
shown on the screen.
In some cases an Entry field has a default entry. To
change the default value, simply type in a new value
for this field and the default entry will be erased.
Press [Down Arrow] or [Return] to move on to the
next field.
■
[Down Arrow]—moves down a list item by item
and starts over again at the top.
■
[Ctrl] + [U]—moves the cursor one screen up the
list box.
■
[Ctrl] + [D]—moves the cursor one page down the
list box.
Key Board Shortcuts
Here are some shortcuts you can use to navigate
within the console screens:
■
[Tab]—Moves from one field on a form to the next
on any screen without making a change.
■
[Return]—Moves you to the next form field after
you have made an entry.
■
[Left Arrow]—Moves you to the previous field on
the screen or the previous character in an editable
field.
■
[Right Arrow]—Moves you to the next field on the
screen or the next character in an editable field.
List Boxes
■
[Ctrl] + [R]—Refreshes the screen.
Example display:
■
[Ctrl] + [B]—Moves the cursor to the next button.
monitor, manager, or security
■
[Ctrl] + [P]—Returns to the previous screen.
■
[Ctrl] + [N]—Moves to the next screen after implementing current screen settings.
■
[Ctrl] + [K]—Displays list of key strokes.
Button
Example display:
OK
Text for button is always shown in uppercase letters.
Buttons carry out actions. For example OK: or CANCEL. To select a button, move the cursor to the
button and press [Return].
A list box allows you to select one or more items
from a list. These keys allow you to select from a
list:
■
[Return]—moves the cursor to the next field. Carries out a button’s action.
■
[Space Bar]—moves through a text list for a field.
Use it to highlight the item or value you want.
Correcting Text Entries
Use [Delete] on a VT100 terminal or [Backspace] on a
PC. This key moves the cursor one space to the left
Console Menu Map
and deletes a character. To delete more than one
character, press the key once for each character.
Check carefully before using the Control keys. If you
are using Telnet or a terminal emulation program you
may find that some Control keys do not work the
same or that they control other functions. Refer to
the documentation that accompanies your Telnet or
terminal emulation software.
Default Users
The resident management console allows three
default user types. They cannot be deleted or altered
by the network administrator. Refer to Table 4-1 for
default names and passwords. Refer to Appendix B
for a listing of screen access rights.
Table 4-1 Default User Names and Passwords
Table 2
Default Name
Password
Access Level
monitor
monitor
monitor
manager
manager
manager
security
security
security
4-3
Console Menu Map
Figure 4-1 provides a map of available I/O Module
local management screens. The I/O Module screens
are shaded gray and appear when the TR-in-FE
Module is installed. If these screens do not appear,
your TR-in-FE Module is not installed correctly.
4-4
CHAPTER 4: ACCESSING MANAGEMENT FEATURES
Switch 2000
Main Banner
Switch 2000
Logon
Switch 2000
Main Menu
Quick
Setup
User
Access
Levels
Status
Stack
Bridge
Setup
Local
Security
Fault
Log
Unit
TR Port
Setup
Switch
Management
Port
VLAN
VLAN
Info Setup
Statistics
TR Port Stats
Traffic Statistics
Setup
Create
User
Traps
Delete
Users
Serial
Port
Edit
User
Bridge
I/O Module
Management
Setup
Setup
TR Port Setup
Bridge Setup
Figure 4-1 VT100 Console Menu Map with I/O Module Detail
Software
Upgrade
Initialize
Reset
Remote
Poll
Poll
Logoff
The LCD Console
1 Press [Enter] to view the next level.
The LCD Console
The SuperStack II Switch 2000 TR has an LCD console
located on the front panel. Use this console for reading and setting the Switch and module parameters.
Refer to the “SuperStack II Switch 2000 TR User
Guide” for a menu map and for specific information
and uses of the console.
The console provides a quick method for viewing the
type of module in the Switch as well as the hardware
and software versions of the module. See Figure 4-2.
The menus of the LCD module are circular. Press
[Enter] until the menu you wish to view appears. For
more information refer to Chapter 5 of the Switch
2000 TR User Guide that accompanies your switch.
To view the module status, proceed as follows from
the top LCD menu which displays the
Switch 2000 TR banner:
Switch 2000 TR
> I/O Module
4-5
ENTER
Module Type
Module State
HW Version
Figure 4-2 I/O Module LCD Menus
ENTER
2 Press [Down Arrow] until
Switch 2000 TR > I/O Module appears.
3 Press [Enter]. I/O Module > Module Type appears.
4 Press [Enter]. STATUS > Module Type appears.
5 Press [Down Arrow] to scroll down through the I/O
Module menus.
6 Press [Enter] at any one of the following fields to view
the information described below. Press [Down Arrow]
to move through the circular menus.
■
Module Type—module type
■
Module State—current state of module (UP,
DOWN)
■
HW Version—current version of hardware
4-6
CHAPTER 4: ACCESSING MANAGEMENT FEATURES
If your terminal is already set up with these values,
the Main Banner appears as soon as power-up is
complete.
Logging On
1 Connect your terminal to the Console port on the
rear panel of the Switch 2000 TR using a cross-over
cable for a serial line connection. Refer to the Switch
2000 TR User Guide for more information.
3 Press [Return] to display the Logon screen at the Main
The Console port automatically detects the line-speed
(baud rate), and uses the following default settings:
4 Type in your user name and password. Note that they
■
auto-baud
■
8 character size (data bits)
■
1 stop bit
■
no parity
Banner.
are both case-sensitive:
Character size, stop bit, flow control, and parity
values cannot be changed.
■
If you are logging on for the first time (after installation or initialization), use a default user name
and password to match your access requirements.
We recommend that you use the default user
“securityÓ so that you can access all functions.
The defaults are shown in Table 4-3.
■
If you have been assigned a user name, access
level and password, type in these details.
2 Press [Return] two or more times until the Switch
2000 Main Banner appears (shown in Figure 4-3).
Figure 4-3 Main Banner
Table 4-3 Default Users
User Name
Default
Password
Access Level
monitor
monitor
monitor - this user can view, but
not change all manageable
parameters
manager
manager
manager - this user can access
and change the operational
parameters but not special/security features
security
security
security - this user can access
and change all manageable
parameters
Logging Off
When you have logged on, the Main Menu screen
displays, as shown in Figure 4-4.
5 Select task or logoff.
4-7
Logging Off
If you accessed the facility using a Telnet session or
modem, the connection closes automatically. If not:
1 Select the LOGOFF option from the bottom of the
Main Menu.
2 Press [Return].
Automatic Logout
Figure 4-4 Main Screen
There is a built-in security timeout on the VT100 interface. If you do not press any keys for three minutes, a
message warns you that the inactivity timer is about
to expire. If you do not press a key within 10 seconds,
the timer will expire and the screen will be locked. All
displayed data continues to update. When you next
press a key, the display changes to the Auto Logout
screen.
The Auto Logout screen prompts you to enter your
password again. If the password is correctly entered,
the screen that was active when the timer expired is
re-displayed. If you make a mistake entering your
password, you will be returned to the Logon screen.
4-8
CHAPTER 4: ACCESSING MANAGEMENT FEATURES
5
CONFIGURING THE TR-IN-FE MODULE
This chapter describes how to configure the TR-in-FE
Module, including:
■
TR-in-FE Module Configuration Map
■
Setting Up a Module
■
Setting Up a VLAN
Figure 5-1 shows the TR-in-FE Configuration Menu
Map.
TR-in-FE Module Configuration Map
The following map displays the path of the TR-in-FE
Port Configuration screens. Configuration screens are
shaded gray.
I/O Module
Statistics
TR Port Stats
Traffic Statistics
Setup
TR Port Setup
Bridge Setup
Figure 5-1 I/O Module TR-in-FE Configuration Map
5-2
CHAPTER 5: CONFIGURING THE TR-IN-FE MODULE
Setting Up a Module
The Module Configuration Screen displays the settings used by the TR-in-FE Module to communicate
with other devices on the network.
It is unlikely that you will need to change the value of
these settings once they have been set.
CAUTION: If you need to change the value of any of
the settings, you may experience a temporary loss of
communication while the values are reset. If you do
not need to make any changes, select the CANCEL
button and not the OK button. Selecting the OK
button resets the device.
To configure a module, log on to the Switch 2000 TR
and proceed as follows:
Figure 5-2 I/O Module Screen (CONFIG)
5 Press [Return].
The Port Setup screen appears. See Figure 5-3.
1 Select SWITCH MANAGEMENT from the Main Menu.
2 Press [Space Bar] and select *I/O Module*.
The I/O Module screen appears. The I/O Module
screen allows you to view statistics and set up the
TR-in-FE module. See Figure 5-2.
If the I/O Module option does not respond, your
TR-in-FE module is not installed correctly. Refer to
Chapter 3 for information on installation.
3 Enter the *Unit ID* of the unit with the module
installed.
4 Select SETUP.
Figure 5-3 Port Setup Screen
Setting Up a Module
The following fields are shown on the screen:
Unit ID—Identifies the currently selected Switch unit.
Port ID—Displays the current module type. It should
read TIF.
Admin. State—This field allows you to *Enable* or
*Disable* the TR-in-FE port.
Internal Priority—This field allows you to distribute
the available bandwidth among the ports. *High* priority ports are given priority access to internal
resources, taking priority over *Normal* priority
ports.
Full Duplex—The TR-in-FE Module works with either
a Full Duplex or Half Duplex mode of operation. The
Full Duplex field allows you to *Enable* or *Disable*
Full Duplex mode. Disabling Full Duplex automatically
puts the TR-in-FE Module in Half Duplex mode.
Max Packet Size—This field allows you two choices
for setting the maximum packet size.
■
■
1518—Use this value in traditional Fast Ethernet
environments.
4544—Use this value for larger packets when
configured with a SuperStack II Switch 3000.
Jamming Mode—This field allows you to restrict the
amount of packet loss allowable when configured
with conventional switches. Jamming provides a variable parameter for determining the number of collisions. This feature is most helpful in networks using
lots of repeaters. Choose from J6 through J13 where
5-3
J6 indicates the least amount of effort by the port to
back off collisions. A value of J13 indicates more
effort on the port. This feature is reserved for qualified and knowledgeable network managers.
VLAN Enable Mask—This field allows you to restrict
or allow for membership in specific VLAN groups.
Each bit in the two-byte field represents a VLAN
denomination from 1 to 16 in hexadecimal. Refer to
“Setting Up a VLAN” on page 5-5 for more information.
It is strongly recommended that you do not alter
these settings.
Bridge Parameters
This section describes how to set bridge parameters
for the TR-in-FE.
Spanning Tree
Spanning Tree is an algorithm designed to eliminate
loops in networks. The algorithm detects and logically
prohibits redundant paths by placing some bridge
ports in the blocking state so that only one route exits
between any two LANs and therefore any two stations. After Spanning Tree eliminates redundant
paths, the network reconfigures and stabilizes. Any
time the network topology changes, the algorithm
automatically relearns the new configuration and
adjusts the bridge ports accordingly. This guarantees
that all stations are connected.
■
Priority—Priority determines the choice of port
when the Switch 2000 TR has two ports connected
to the same LAN, creating a loop.
5-4
CHAPTER 5: CONFIGURING THE TR-IN-FE MODULE
Ports with a lower value have a higher priority and
will be blocked only after ports with a higher value
and a lower priority have been blocked.
■
Path Cost—Path cost determines the amount of
overhead required to forward packets to the root
through this port.
The higher the path cost, the less likely Spanning
Tree will use a port for forwarding. The lower the
cost, the more likely Spanning Tree will use a port
for forwarding.
NOTE: It is always recommended that, in the case of
a loop formed with a low speed port, the high-speed
ports do not block. The switch automatically provides
this function with default settings (port speed is part
of the spanning tree calculations). Be aware of this, if
the spanning tree values are modified.
■
Fast Fwd—Frames are forwarded as soon as the
destination address is received and verified.
Source Routing
Source Routing is a method of allowing a ring station
(node) on a Token Ring network to communicate with
another ring station on a different ring interconnected by bridges. The “source” ring station, which is
the node initiating the communication, is responsible
for dynamically determining and then maintaining
information about the “route” to the destination ring
station. A route is simply the path a packet takes
through a source route bridged network from the
source ring station to the destination ring station.
In the case of TR-in-FE, a virtual LAN ID must be
assigned to the FE cloud. This allows Source Routing
to proceed as though the FE media supported TR
natively. The entire FE transparently forwarded cloud
appears as a single “ring” and hence a single hop to
attached TR endstations. This also allows FE servers to
participate in source routing.
■
Attached Lan Id—A unique number that identifies the segment to which the port connects. This
value can be set between 0 and FFF (0-4095). A
value of FFFF (65535) indicates that no segment
number has been assigned to this port.
■
Max Route-Desc—This value describes the
number of routing descriptions allowed in All
Route Explorer (ARE) or Spanning Tree Explorer
(STE) frames. This is also referred to as “hop
count” limit since it limits the number of rings a
packet can traverse.
■
STE Mode—This value determines how this port
responds when presented with Spanning Tree
Explorer (STE) packets. Set the field accordingly by
pressing the [Space Bar].
■
■
■
Disabled—Indicates that the port will not
accept or propagate STE packets, and any packets received will be discarded.
Forced—Indicates that the port will always
accept and propagate STE packets.
Auto-Span—Indicates that the port will accept
and propagate STE packets when its Spanning
Tree state is forwarding.
Setting Up a VLAN
Setting Up a VLAN
This section describes how to extend VLANs into the
TR-in-FE network. A TR-in-FE port can be in one or
more (up to 16) VLANs.
TR VLAN Info Setup Screen
To set up a TR-in-FE VLAN, proceed as follows from
the main menu:
1 Use the [Space Bar] to scroll to VLAN.
2 Select VLAN INFO.
3 Press [Return].
The VLAN Info Setup screen appears. See Figure 5-4.
5-5
Each time you complete the entry fields for a VLAN
you must select APPLY to invoke the changes. As
soon as you select a different VLAN using the VLAN
field, any edits not already applied are lost.
Included in this screen are the following fields:
■
VLAN Name—Name assigned to identify each (up
to 16) VLANs.
■
802.1q VLAN ID—A 12-bit ID used to identify a
particular VLAN’s frames for routing across FE
media. This ID defines which frames should be
received and forwarded to a VLAN via the TR-in-FE
module. If TR ports on separate boxes are to be
connected via TR-in-FE, then this parameter must
be identically configured on both boxes. By
default, all TR ports are assigned to VLAN 1, and
the 802.1q VLAN ID is identical to the VLAN
number assigned to the box.
TR VLAN Setup Screen
Use this screen to assign VLANs to the TR-in-FE port,
and to associate a backbone port (the place to which
unknown unicasts are forwarded) with each VLAN.
To set up, proceed as follows from the I/O Module
menu:
1 Use the [Space Bar] to scroll to VLAN.
Figure 5-4 TR VLAN Info Setup Screen
4 Select the VLAN that you wish to configure. Enter the
number associated with the VLAN in the VLAN ID
field.
2 Select SETUP.
3 Press [Return].
The VLAN Info Setup screen appears. See Figure 5-5.
5-6
CHAPTER 5: CONFIGURING THE TR-IN-FE MODULE
Figure 5-5 VLAN Setup Screen
4 Scroll the VLAN list using the [Up and Down] keys.
6
MONITORING THE TR-IN-FE MODULE
This chapter describes how to monitor the status and
performance of your TR-in-FE Module and explains
the meaning of the statistics.
■
TR-in-FE Module Statistics Map
■
Statistics Overview
■
Port Statistics (Traffic)
TR-in-FE Module Statistics Map
Figure 6-1 shows the screen map. Monitoring screens
are shaded gray.
I/O Module
Statistics
TR Port Stats
Traffic Statistics
Figure 6-1 Status Screen Map
Setup
TR Port Setup
6-2
CHAPTER 6: MONITORING THE TR-IN-FE MODULE
Statistics Overview
The TR Port Statistics screen provides a top level summary of TR-in-FE Port statistics. You can use the summary to estimate the amount of traffic on your
network backbone, and to check the health of the
incoming connection. To view the summary, proceed
as follows from the I/O Module menu:
Unit ID—Identifies the currently selected unit.
Port ID—Identifies the currently selected port. It
should read TIF.
Link State—Displays the current state of the unit.
The states include:
■
1 Enter the *Unit ID* number of the unit you wish to
view.
2 Select the STATISTICS button.
The TR Port Statistics screen appears. See Figure 6-2.
■
■
■
Figure 6-2 TR Port Statistics Screen
The figures shown for each statistic on this screen
include TR-in-FE management traffic and normal
Token Ring traffic.
The Port Statistics screen displays the following fields:
■
Listening—The state in which all ports are
placed while Spanning Tree configures the network topology. Ports remain in this state until
the root bridge is selected. This period should
be long enough for a port to hear from all other
ports on the switch.
Learning—The state in which ports receive
data on the topology of the network for the
purpose of learning the stations attached to the
port. If the port receives no information that
would force it into the blocking state, then it
moves on to the forwarding state.
Forwarding—This state allows the port to perform standard switching and bridging functions. Packets are received and the port either
forwards or discards them based on the address
of the packet and the switch’s address table.
Blocking—In this state, the port continues to
receive data on the status of the network topology but does not transmit them. The port neither receives packets nor learns the addresses of
stations for forwarding or receiving.
Disabled—The state in which Spanning Tree
has been turned off. Port is disabled by management.
Port Statistics (Traffic)
■
Broken—No cable attached.
Current Utilization—The percentage of bandwidth
usage for the port you are currently viewing. This
value indicates the general traffic level on the individual port. Ideally, this figure should be below 60%,
which indicates that the port is responsible for a reasonable amount of traffic relative to the entire ring.
High utilization values suggest that you should adjust
the network topology by reducing load on that port
through segmentation.
6-3
Port Statistics (Traffic)
The TR Port Statistics (Traffic) screen provides a
detailed display of statistics for the port you are viewing. To view the Port Statistics screen, proceed as follows from the TR Port Statistics screen:
1 Select TRAFFIC STATISTICS button in the lower
left-hand corner of the screen.
The TR Port Statistics screen appears. See Figure 6-3.
Frames Forwarded—A running average of the proportion of the received frames forwarded. This value
is expressed as a percentage of all received frames,
based on a sampling interval of 20 seconds.
Broadcast Frame Bandwidth—A running average
of the broadcast frame bandwidth. This value is
expressed as a percentage of theoretical maximum
bandwidth availability, based on a sampling interval
of 20 seconds.
Error Frames—This field displays a running average
of the percentage of error frames with CRC errors
and is based on a sampling interval of 20 seconds.
Traffic Statistics—Select this category to view the
Port Statistics (Traffic) screen. See the next section.
Figure 6-3 Sample TR Port Statistics (Traffic) Screen
The Port Statistics screen displays the following fields:
Unit ID—The identifying number of the unit you are
viewing.
Port ID—The identifying name of the port you are
viewing. Should read TR-in-FE.
6-4
CHAPTER 6: MONITORING THE TR-IN-FE MODULE
Frames Received—The total number of frames that
have been received by the port including frames with
errors.
Frames Transmitted—The total number of frames
transmitted by the port, including frames with errors.
Multicasts Frames—The number of frames successfully received with a multicast destination address.
This number does not include frames directed to a
broadcast address or frames received with errors.
Broadcast Frames—The number of frames received
that have a broadcast destination address. This
number does not include frames with errors.
Octets Received—The number of octets received by
the port, including the MAC header and CRC. Octet
counters are accurate to the nearest 256-byte boundary.
Octets Transmitted—The number of octets transmitted by the port, including the MAC header and
CRC. Octet counters are accurate to the nearest
256-byte boundary.
Jam Counts—
Frames Forwarded—The total number of frames
received by this port and then forwarded to their destination address.
Cut-thrus Received—The total number of cut-thru
packets received on the port.
Errors—Total of both line errors (CRCs) and lost
frames.
Frame Size Analysis—A series of counters that represent the composition of the traffic on the Switch
2000 TR. The counters display the percentage of
packets categorized by received length as represented
by the following octet parameters:
■
18 to 63 octets
■
64 to 127 octets
■
128 to 255 octets
■
256 to 511 octets
■
512 to 1023 octets
■
1024 to 2047 octets
■
2048 to 4095 octets
■
Packets greater than 4095 octets
Clearing Screen Counters
To make it easier to note the changes in statistic values, you can reset the value of statistics shown on the
screen to zero. Resetting the values shown on the
screen does not reset the statistic values stored on the
device.
Select the CLEAR SCREEN COUNTERS button to reset
the counters on the screen to zero.
A
SAFETY INFORMATION
on. It is advisable that the fiber TX port and fiber
cable ends are never viewed directly when powered on.
You must read the following safety information
before carrying out any component installation or
removal, or any maintenance procedures.
This information should be read in conjunction with
the safety information supplied with the Switch.
WARNING: Do not remove the downlink module or
transceiver module blanking plate with the power still
connected.
Important Safety Information
WARNING: Warnings contain directions that you
must follow for your personal safety. Follow all
instructions carefully.
Please read the following safety information thoroughly in conjunction with the safety information
supplied with the Switch before installing the TR-in-FE
Module.
■
Installation and removal of the module must be
carried out by qualified personnel only.
■
This module operates under SELV (Safety Extra Low
Voltage) conditions, according to IEC 950, the conditions of which are maintained only if the equipment to which it is installed is also operational
under SELV.
■
Optical Safety. Under normal viewing conditions
there is no hazard from the Transmit LED. It is recommended however that the LED is not viewed
through any magnifying device while it is powered
L’information de Sécurité Importante
ADVERTISSEMENT:Les avertissements contiennent
les directions que vous devez suivre pour votre sécurité personnelle. Suivez toutes les directives avec soin.
Veuillez lire à fond l'information de la sécurité suivante avant d'installer le TR-in-FE Module.
■
L'installation et l'enlèvement de l'unité doivent
être faits seulement par une personnel qualifié.
■
Cette unité marche sous les conditions SELV
(Safety Extra Low Voltage) conformément à
IEC950, ces conditions sont maintenues seulement
si le matériel auquel elle est branchée, est aussi en
exploitation sous SELV.
■
La sécurité optique. Il n’y a pas de risques du Transmit LED, vu sous conditions normales. Cependant
il est recommandé de ne pas regarder le matériel
avec l’aide d’une verre grossiant quand il est
allumé. Il est aussi conseillé que la port marqué
A-2
APPENDIX A: SAFETY INFORMATION
Fibre TX et les cables fibre ne soient jamais
regardés quand l’unité est allumé.
ADVERTISSEMENT:Ne pas enlever le Module Downlink ou la plaque d'occultation de module
d'émetteur-récepteur avec le courant encore branché.
Wichtige Sicherheitsinformationen
WARNUNG: Warnungen enthalten Anweisungen,
die zur eigenen Sicherheit unbedingt zu beachten
sind. Bitte befolgen Sie alle Anweisungen sorgfältig
und genau.
Bitte unbedingt vor dem Einbauen des TR-in-FE
Module Einheit die folgenden Sicherheitsanweisungen durchlesen.
■
Ein- und Ausbau des Gerätes ist nur von Fachpersonal vorzunehmen.
■
Das Gerät wird mit Sicherheits-Kleinspannung
nach IEC 950 (SELV = Safety Extra Low Voltage)
betrieben. Angeschloßen werden können nur
Geräte, die ebenfalls nach SELV betrieben werden.
■
Optische Sicherheitsmassnahmen. Unter normalen
Umstaenden besteht keine Gefahr durch die sendende Lumineszenzdiode (LED). Es wird jedoch
empfohlen diese LED, wenn sie im Betrieb ist, niemals mittels irgenwelcher Art von Vergroesserungsgeraeten zu betrachten. Es ist ratsam mit
dieser Glasfaser Sendeleitung und den Lictwellenleiter Enden keinen direkten Augenkontakt zu
haben wenn sie im Betrieb sind.
WARNUNG:Die Austastplatten der Downlink Module- oder Sendeempfänger-Module nicht entfernen,
solange die Einheit ans Stromnetz angeschlossen ist.
B
SCREEN ACCESS RIGHTS
This appendix lists the security access level for accessing the TR-in-FE Module local management screens,
and lists the type of action performed for each security level.
This appendix only covers screens specifically associated with TR-in-FE functionality. See the user guide
which accompanies your SuperStack II Switch for
additional screen access rights.
The general actions that can be performed by users
for each of the security access levels is as follows:
Security/Specialist - read and write
Manager - read and write
Monitor/Secure Monitor - read only
The following table shows the access rights required
for each of the ATM screens.
Screen
Access level required
TR-in-FE Port Setup
Security
Manager
Monitor
TR-in-FE VLAN Setup
Security
Manager
TR-in-FE Port Statistics
Security
Manager
Monitor
B-2
APPENDIX B: SCREEN ACCESS RIGHTS
C
TR-IN-FE MODULE TECHNICAL SPECIFICATIONS
Environmental Specifications
TR-in-FE Cable Specification
The TR-in-FE cable you connect to the TR-in-FE
Module must conform to the Multi-Mode Fiber
(MMF-PMD) standard defined by ANSI x.3-166-1992.
Environmental Requirements
Operating Temperature
0 to 50˚ C (32 to 122˚F)
Operating Humidity
10 to 95% relative humidity, non-condensing
Standards
EN60068 (IEC68)
3Com supports multi-mode fiber (MMF-PMD)
62.5/125 mm for full duplex mode. The maximum
inter-station distance (including device-to-network
connectors) should not exceed 2 kilometers (1.25
miles).
Safety
Agency Certifications
UL 1950,
EN60950,
CSA 22.2 No. 950,
ECMA 97
For half duplex mode, the cable length should not
exceed 300 meters.
See the following table for cable specifications:
Electromagnetic Emissions
(Agency Certification)
EN55022 Class B,
FCC Part 15 Class A,
C108.8-M1983 Class A,
EN 50082-1 (IEC801 Parts 2-5),
EN60555 Part 2
Specification
Description
Core
62.5 mm diameter
Cladding
125 mm diameter nominal
122 mm minimum
128 mm maximum
Numerical aperture
0.275
Maximum attenuation
11 dB (including 1 db allowed for
reflection and dispersion penalties)
Modal bandwidth
500 MHz.km
Maximum distance between
nodes
2 km (1.25 miles)
C-2
APPENDIX C: TR-IN-FE MODULE TECHNICAL SPECIFICATIONS
Specification
Description
Output power (from transceiver)
-20 dB minimum
-14 db maximum
Receiver power
-31 dB minimum sensitivity
-14 dB maximum sensitivity
If you are using equipment at the end of the link from
a vendor other than 3Com, you must perform a separate loss budget analysis. Contact the vendor(s) for
values to use in your analysis.
Does the Cable Provide Sufficient Bandwidth?
Maximum attenuation includes attenuation and the
loss induced by other components such as connectors, splices, and the mating of unlike fiber types.
Although some 2 km (1.25 miles) cables have a total
attenuation of less than 11.0 dB, the 2 km (1.25
miles) inter-station distance must be maintained to
comply with modal bandwidth requirements.
The maximum attenuation value in this table is based
on a cable diameter of 62.5, 80 or 100 mm.
The following table shows alternative Multi-Mode
fiber types that can be used.
Core (mm)
Cladding (mm)
Numerical Aperture
50
125
0.20
50
125
0.22
85
125
0.28
100
140
0.29
If you are using fiber with a diameter of 50 mm and
have 3Com equipment at both ends of the link, substitute 8.0 dB for the maximum attenuation. If 3Com
equipment is only at one end, substitute 6.0 dB for
the maximum attenuation value.
Bandwidth for multi-mode fiber is referred to as
modal bandwidth because it varies with the modal
field (or core diameter) of the fiber.
Modal bandwidth is specified in units of MHz.km,
which indicates the amount of bandwidth supported
by the fiber for a 1 km (0.625 miles) distance. Your
cable must have a Modal bandwidth of 500 MHz,
which allows the cable to support end-to-end bandwidth of 250 MHz at the maximum 2 km (1.25 miles)
distance.
To check that the bandwidth of your fiber is within an
acceptable range:
1 Divide the amount of bandwidth available according
to the fiber specification by the total length of fiber
(km).
2 If the result is lower than 250 MHz, the link may be
prone to bit errors. You should shorten the length of
the fiber or use a different fiber until the result of the
calculation reaches 250 MHz.
Example
A cable with modal bandwidth of 500 MHz.km will
have 250 MHz of bandwidth at 2 km (1.25 miles).
TR-in-FE Cable Specification
The same cable would have a 500 MHz of bandwidth
at 1 km (0.625 miles).
A fiber cable with a bandwidth specification of 200
MHz.km would have only 100 MHz of bandwidth at
2 km (1.25 miles), which would not support TR-in-FE.
In this case, another type of fiber which has a bandwidth of 155 MHz would be required.
C-3
C-4
APPENDIX C: TR-IN-FE MODULE TECHNICAL SPECIFICATIONS
D
TECHNICAL SUPPORT
Online Technical Services
3Com offers worldwide product support seven days a
week, 24 hours a day, through the following online
systems:
Country
Data Rate
Telephone Number
Germany
up to 28800 bps
(49) (89) 627 32 188
Hong Kong
up to 14400 bps
(852) 2537 5608
Italy (fee required)
up to 14400 bps
(39) (2) 273 00680
up to 14400 bps
(81) (3) 3345 7266
■
3Com Bulletin Board Service (3ComBBS)
Japan
■
World Wide Web site
Mexico
up to 28800 bps
(52) (5) 520 7835
■
3ComForum on CompuServe®
P. R. of China
up to 14400 bps
(86) (10) 684 92351
■
3ComFactsSM automated fax service
Singapore
up to 14400 bps
(65) 534 5693
Taiwan
up to 14400 bps
(886) (2) 377 5840
U.K.
up to 28800 bps
(44) (1442) 278278
U.S.
up to 28800 bps
(1) (408) 980 8204
3Com Bulletin Board Service
3ComBBS contains patches, software, and drivers for
all 3Com products, as well as technical articles. This
service is available via modem or ISDN seven days a
week, 24 hours a day.
Access by Modem
To reach the service by modem, set your modem to 8
data bits, no parity, and 1 stop bit. Call the telephone
number nearest you:
Access by ISDN
ISDN users can dial in to 3ComBBS using a digital
modem for fast access up to 56 Kbps. To access
3ComBBS using ISDN, dial the following number:
(408) 654 2703
World Wide Web Site
Country
Data Rate
Telephone Number
Australia
up to 14400 bps
(61) (2) 9955 2073
Brazil
up to 14400 bps
(55) (11) 547 9666
Access the latest networking information on 3Com’s
World Wide Web site by entering our URL into your
Internet browser:
France
up to 14400 bps
(33) (1) 69 86 69 54
http://www.3Com.com/
D-2
APPENDIX D: TECHNICAL SUPPORT
This service features news and information about
3Com products, customer service and support,
3Com’s latest news releases, selected articles from
3TECH™ (3Com’s award-winning technical journal)
and more.
Local access numbers are available within the following countries:
Country
Telephone
Number
Country
Telephone
Number
Australia
800 123853
Netherlands
06 0228049
3ComForum is a CompuServe-based service containing patches, software, drivers, and technical articles
about all 3Com products, as well as a messaging section for peer support. To use 3ComForum, you need a
CompuServe account.
Belgium
0800 71279
Norway
800 11062
Denmark
800 17319
Portugal
0505 442607
Finland
98 001 4444
Russia
956 0815
(Moscow only)
France
05 90 81 58
Spain
900 964445
To use 3ComForum:
Germany
0130 8180 63
Sweden
020 792954
Italy
1678 99085
U.K.
0800 626403
3ComForum on CompuServe
1 Log on to CompuServe.
2 Enter go threecom .
3 Press [Return] to see the 3ComForum main menu.
3ComFacts Automated Fax Service
3Com Corporation’s interactive fax service,
3ComFacts, provides data sheets, technical articles,
diagrams, and troubleshooting instructions on 3Com
products 24 hours a day, seven days a week.
Call 3ComFacts using your touch-tone telephone.
International access numbers are:
Country
Telephone
Number
U.K.
(44) (1442) 278279
U.S.
(1) (408) 727 7021
Support from Your Network Supplier
If additional assistance is required, contact your network supplier. Many suppliers are authorized 3Com
service partners 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:
■
Diagnostic error messages
■
A list of system hardware and software, including
revision levels
■
Details about recent configuration changes, if
applicable
Support from 3Com
If you are unable to contact your network supplier,
see the following section on how to contact 3Com.
Country
Telephone Number
*
Support from 3Com
D-3
Netherlands
06 0227788
Norway*
800 11376
Singapore
(65) 538 9368
If you are unable to receive support from your network supplier, technical support contracts are available from 3Com.
South Africa
(27) (11) 807 4397
Spain*
900 983125
Sweden*
020 795482
In the U.S. and Canada, call (800) 876-3266 for customer service.
Taiwan
(886) (2) 577 4352
United Arab Emirates
(971) (4) 349049
If you are outside the U.S. and Canada, contact your
local 3Com sales office to find your authorized service
provider:
U.K.*
0800 966197
U.S.
(1) (408) 492 1790
* These numbers are toll-free.
Country
Telephone Number
Australia*
1 800 678 515
Belgium*
0800 71429
Brazil
(55) (11) 546 0869
Canada
(416) 498 3266
Denmark*
800 17309
A product sent directly to 3Com for repair must first
be assigned a Return Materials Authorization (RMA)
number. A product sent to 3Com without an RMA
number will be returned to the sender unopened, at
the sender’s expense.
Finland*
0800 113153
To obtain an RMA number, call or fax:
France*
05 917959
Germany*
0130 821502
Hong Kong
(852) 2501 1111
Ireland*
1 800 553117
Italy*
1678 79489
Japan
(81) (3) 3345 7251
Mexico
(525) 520 7841
Returning Products for Repair
Country
Telephone Number
Fax Number
U.S. and Canada
(800) 876 3266, option 2
(408) 764 7120
Europe
31 30 60 29900, option 5
(44) (1442) 275822
Outside Europe,
U.S., and Canada
(1) (408) 492 1790
(1) (408) 764 7290
D-4
APPENDIX D: TECHNICAL SUPPORT
1
Numbers
F
3Com Bulletin Board Service (3ComBBS) D-1
3Com sales offices D-3
3ComFacts D-2
3ComForum D-2
Fax service. See 3ComFacts
Forwarding, description of 6-2
Frames Forwarded, description of 6-3
A
I
Installing the TR-in-FE Module 3-1
Automatic logout 4-7
B
Bandwidth
Calculation C-1
Blocking, description of 6-2
BRIDGE SETUP
Setting Bridge Parameters 5-3
Broadcast Frame Bandwidth, description
of 6-3
Bulletin board service D-1
L
Learning, description of 6-2
LEDs
Summary 3-3
Listening, definition of 6-2
Logging off 4-7
M
Manual
Finding information 2
C
Cables
Technical Specification C-1
Cautions in text 2
Clearing screen counters 6-4
CompuServe D-2
Connections
Troubleshooting 3-5
Conventions in text 2
Current Utilization, description of 6-3
N
Network supplier support D-2
Notice conventions 1
Default Users, management console 4-3
Disabled, description of 6-2
E
Environmental Specifications C-1
Error Frames, description of 6-3
R
Returning products for repair D-3
S
O
On-line technical services D-1
P
D
Link State
Blocking 6-2
Disabled 6-2
Forwarding 6-2
Learning 6-2
Listening 6-2
Traffic Statistics 6-3
Port Statistics (Traffic) 6-3
Broadcasts Received 6-4
Cut-thrus Received 6-4
Errors 6-4
Frame Size Analysis 6-4
Frames Forwarded 6-4
Frames Received 6-4
Frames Transmitted 6-4
Multicasts Received 6-4
Octets Received 6-4
Octets Transmitted 6-4
Port ID 6-3
Post installation checks 3-3
Power supply 3-4
Passwords
Default passwords 4-6
Port
Configuration 5-2
Port Statistics
Broadcast Frame Bandwidth 6-3
Current Utilization 6-3
Error Frames 6-3
Frames Forwarded 6-3
Safety information 3-1
English A-1
French A-1
German A-2
Screen access rights B-1
Statistics
Clearing screen counters 6-4
Screen map 6-1
T
Technical Specifications
Bandwidth calculation C-2
Cabling C-1
Environment C-1
2
Terminology 1
Traffic Statistics, description of 6-3
TR-in-FE
Concepts 2-1
Statistics 6-1
TR-in-FE Module
Installing 3-1
Power supply 3-4
TR-in-FE Port
Configuration 5-2
Troubleshooting
Using LEDs 3-3
U
User guide
Finding information 2
Users
Default users 4-6
Screen access rights B-1
V
VT100 Console
Button 4-2
Choice Field 4-1
Correcting Text Entries 4-2
Entry Field 4-1
Keyboard Shortcuts 4-2
List Boxes 4-2
W
Warnings in text 2
3Com Corporation LIMITED WARRANTY
For purposes of this warranty, the SuperStack II Switch 2000 TR Token
Ring-in-Fast Ethernet Module is considered a(n) Internetworking product.
HARDWARE
software products will be corrected. For any third-party products listed in the 3Com
software product documentation or specifications as being compatible, 3Com will
make reasonable efforts to provide compatibility, except where the noncompatibility
is caused by a “bug” or defect in the third party’s product.
STANDARD WARRANTY SERVICE
3Com warrants its hardware products to be free from defects in workmanship and
materials, under normal use and service, for the following lengths of time from the
date of purchase from 3Com or its Authorized Reseller:
Internetworking products
One year
Network adapters
Lifetime
Ethernet stackable hubs and
Unmanaged Ethernet fixed port repeaters
Lifetime*
(One year if not registered)
*Power supply and fans in the stackable hubs and One year
unmanaged repeaters
Standard warranty service for hardware products may be obtained by delivering the
defective product, accompanied by a copy of the dated proof of purchase, to 3Com’s
Corporate Service Center or to an Authorized 3Com Service Center during the
applicable warranty period. Standard warranty service for software products may be
obtained by telephoning 3Com’s Corporate Service Center or an Authorized 3Com
Service Center, within the warranty period. Products returned to 3Com’s Corporate
Service Center must be pre-authorized by 3Com with a Return Material Authorization
(RMA) number marked on the outside of the package, and sent prepaid, insured, and
packaged appropriately for safe shipment. The repaired or replaced item will be
shipped to Customer, at 3Com’s expense, not later than thirty (30) days after receipt
of the defective product by 3Com.
Other hardware products
One year
WARRANTIES EXCLUSIVE
Spare parts and spares kits
90 days
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S
SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT,
OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION. TO THE FULL
EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE
EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS,
EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR
OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND SATISFACTORY
QUALITY. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO
ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,
INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.
If a product does not operate as warranted above during the applicable warranty
period, 3Com shall, at its option and expense, repair the defective product or part,
deliver to Customer an equivalent product or part to replace the defective item, or
refund to Customer the purchase price paid for the defective product. All products
that are replaced will become the property of 3Com. Replacement products may be
new or reconditioned. Any replaced or repaired product or part has a ninety (90) day
warranty or the remainder of the initial warranty period, whichever is longer.
3Com shall not be responsible for any software, firmware, information, or memory
data of Customer contained in, stored on, or integrated with any products returned
to 3Com for repair, whether under warranty or not.
SOFTWARE
3Com warrants that the software programs licensed from it will perform in
substantial conformance to the program specifications therefor for a period of ninety
(90) days from the date of purchase from 3Com or its Authorized Reseller. 3Com
warrants the media containing software against failure during the warranty period.
No updates are provided. 3Com’s sole obligation with respect to this express
warranty shall be (at 3Com’s discretion) to refund the purchase price paid by
Customer for any defective software products, or to replace any defective media with
software which substantially conforms to 3Com’s applicable published specifications.
Customer assumes responsibility for the selection of the appropriate applications
program and associated reference materials. 3Com makes no warranty or
representation that its software products will work in combination with any hardware
or applications software products provided by third parties, that the operation of the
software products will be uninterrupted or error free, or that all defects in the
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND
EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT
EXIST OR WAS CAUSED BY CUSTOMER’S OR ANY THIRD PERSON’S MISUSE,
NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO
REPAIR OR MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED
USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND
ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING
NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE
DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF
BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING
OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE,
PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR
ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE
PURCHASE PRICE PAID, AT 3COM’S OPTION. THIS DISCLAIMER OF LIABILITY FOR
DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL
OF ITS ESSENTIAL PURPOSE.
Some countries, states, or provinces do not allow the exclusion or limitation of
implied warranties or the limitation of incidental or consequential damages for certain
products supplied to consumers, so the above limitations and exclusions may be
limited in their application to you. This warranty gives you specific legal rights which
may vary depending on local law.
GOVERNING LAW
This Limited Warranty shall be governed by the laws of the state of California.
3Com Corporation, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145 (408)
764-5000
8/20/96