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3Com LANplex 6000 Installation Manual

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Type: Installation Guide
Category: Switch
Pages: 16
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R

 

T

 

OKEN

 

 R

 

ING

 

 S

 

WITCHING

 

 

M

 

ODULE

 

 I

 

NSTALLATION

 

 G

 

UIDE

 

For the LANplex 6000

 

About This Guide

 

This guide includes:

 

 

An inventory of items shipped with your LANplex 6000 module

 

 

An overview of the Token Ring Switching Module (TRSM)

 

 

Instructions for installing and replacing TRSM

 

 

A description of the TRSM’s components, including media options and 
diagnostic LEDs

 

 

Pin-out information for the TRSM

Information on installing modules is also included in the 

 

LANplex 6000 

Getting Started 

 

guide.

 

NOTE:

 

 

 

Prior to installing the TRSM module, LANplex system software revision 

6.0 or later must be installed.

 

CAUTION:

 

 In order to run software revision 5.0 or later on the LANplex 6000 

you must have the new LMM Plus installed in your system. To verify if you 
have an LMM Plus installed check the module’s ejector tab to ensure it says 

 

LMM+

 

.

 

Audience

 

This guide is intended for trained technical personnel only. 

 

Taking Inventory

 

Your package should contain the following items. 

 

 

1 LANplex 6000 TRSM

 

 

 

LANplex 6000 Software Release Notes

 

 

1 disposable electrostatic discharge (ESD) wrist strap 

 

 

Operational diskette(s) (UNIX and DOS)

 

 

MIB diskette(s) (UNIX and DOS)

Contact 3Com Customer Service Organization at 1-800-876-3266, option 2, 
if any item is missing.

 


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2

 

TRSM Description

 

TRSM Description

 

The Token Ring Switching Module (TRSM) is designed to add Token Ring 
(TR) switching functionality to the LANplex 6000, providing the most cost 
effective solution for introducing segmentation for today's Token Ring 
networks, while allowing you to prepare for future higher bandwidth 
requirements such as multimedia applications.

The TRSM has eight shielded RJ-45 token ring ports on the front of the 
module and one FDDI backplane attachment which may be connected to 
any of the three LANplex chassis FDDI backplanes. All eight token ring 
switch ports support a full ring of 260 stations, with two of the ports able to 
accommodate direct station attachment for dedicated bandwidth to file 
servers and other critical resources. The shielded RJ-45 ports allow for 
attachment via Type 1 STP or Type 3, 4, or 5 UTP copper cable. Each port is 
independently configurable to support either 4 Mbps or 16 Mbps operation. 

 

TRSM Configurable

Bridge Modes

 

The TRSM is architected to support both source routed or transparent 
traffic types in the following modes:

 

 

Transparent (T)

 

 

Source Routing (SR)

 

 

Source Routing-Transparent Bridge (SRT)

 

Transparent

 

The TRSM fully complies with the IEEE 802.1d bridging standard, which 
means that the module:

 

 

Learns source addresses from packets transmitted by stations on LANs 
attached to TRSM ports

 

 

Ages addresses of stations on attached LANs that have not transmitted a 
packet for a prolonged time

 

 

Stores and forwards packets from one attached LAN to another

 

 

Uses the Spanning Tree protocol for loop detection

The TRSM automatically “learns” the MAC-layer addresses of the stations on 
its attached networks, and then forwards packets to their appropriate 
destinations. Packet forwarding is based on learned or statically configured 
MAC addresses. The TRSM can learn up to 8192K addresses. Additional 
addresses are learned as addresses are aged out. All addresses are stored in 

 


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TRSM Description

 

3

 

nonvolatile RAM so they will survive a power loss or system initialization. 
Source Routed traffic is not forwarded while in this mode.

 

Source Routing (SR) 

 

In Source Routing (SR), the packet contains information in the Route 
Information Field (RIF), which specifies the route the packet should follow in 
order to reach its destination. Through the process of route discovery, the 
packet determines various routes available and embeds this information as 
Ring Numbers and Bridge Numbers within the RIF. The bridge compares the 
RIF to its configured Bridge Numbers and Ring Numbers for each port and 
forwards the packet if appropriate. The TRSM utilizes one hop between any 
two ports on the module.

For Spanning Tree, the network mesh topology is reduced to a single path 
utilizing IEEE 802.1d Spanning Tree. 

Transparent traffic is not forwarded while in this mode. 

 

Source Routing Transparent (SRT)

 

The Source Routing-Transparent (SRT) operation complies with the 802.1d 
standard which provides bridging for both Source Routing and non-Source 
Routing protocols. It uses the Route Information Indicator to differentiate 
between SR and non-SR packets and applies the appropriate bridging 
method on each packet received. 

To configure the Bridging mode, see Chapter 11:

 

 Administering the Bridge 

 

in 

the

 

 LANplex 6000 Administration Console User Guide

 

.

 

 

N

 

TRSM Configurable

Protocol Translation

Modes

 

Protocol addresses on Token Ring are defined in non-canonical format while 
FDDI is defined in canonical format. For a workstation on Token Ring to 
communicate with a server on FDDI, it is necessary to reformat or translate 
these embedded protocol address. The TRSM supports translation between 
Token Ring and FDDI for the following protocols: IP, IPX, NetBIOS, and SNA. 

Translation is not necessary if FDDI is only used as a transport media 
between TRSMs. Since this feature may degrade performance, it is 
recommended that you disable the translation feature when FDDI is used 
solely as a transport media. 

 


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4

 

TRSM Installation

 

TRSM Installation

 

This section describes the following:

 

 

Module safety information

 

 

Installation information

 

 

LED activity during installation

 

 

Pin-out information

Information on installing modules is also included in the 

 

LANplex 6000 

Getting Started 

 

guide.

 

Safety Information

 

Electrostatic discharge (ESD) damage 

occurs when the module is improperly 

handled. ESD can damage components on a module, causing complete or 
intermittent failures. 

To prevent ESD-related damage, handle the module in the following 
manner:

 

 

Always wear the ESD wrist strap provided with the module, ensuring that it 
makes good skin contact and that the alligator clip is connected to a 
suitable ground. See Figure 3

 

 

 

on page 7.

 

 

Keep the module in its antistatic shielded bag until you are ready to
install it.

 

 

Do not touch the components, pins, leads, or solder connections.

 

 

Always handle the module by its edges.

Additionally, you should cover every empty slot with a blank faceplate to 
protect the system from dust or other foreign substances, and to ensure 
proper system cooling.

 

Prior to Installation

 

Before you install your new module, follow the appropriate pre-installation 
instructions below: 

 

Read if installing in

an empty slot

 

Your LANplex system is shipped with no modules installed and with 
protective faceplates covering the installation slots. Initial installation 
requires that you remove the protective faceplate covering the selected 
installation slot prior to installing the option module. 

 


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TRSM Installation

 

5

 

To remove the faceplate:

 

1

 

Unscrew the securing screws on the module’s faceplate. See Figure 1.

 

Figure 1   

 

LANplex 6004 with Blank Faceplates

 

2

 

Pull the faceplate away from the system. 

 

Read if replacing

a TRSM

 

You can replace a module while the system is powered on. Replacing the 
module requires that you remove the attached cables from the module’s 
ports prior to installing the new module.

 

NOTE:

 

 Ensure that there is a record of where the cables are attached so that 

you can correctly re-connect them to the new module. 

 

CAUTION:

 

 Inserting and extracting a TRSM erases all information stored in 

NVRAM on the TRSM. Before removing the installed TRSM, save all 
nonvolatile data using the NV data save functionality on the system’s 
Administration Console. This information can be restored using the NV 
restore functionality. See the LANplex 6000 Administration Console User 
Guide for information on saving, restoring, and resetting nonvolatile data. 
Inserting and extracting a module will cause a warm system reboot. 

 

To remove a module: 

 

1

 

Discharge yourself of static electricity by placing the ESD wrist strap on your 
wrist and clipping the alligator clip to the mounting screw located next to 
the black ground symbol on the system’s right mounting bracket. See 
Figure 3. If your system does not have mounting brackets, touch the rear 
panel.

 

2

 

Disconnect the cables from the module’s ports.

 

3

 

Unscrew the securing screws on the module’s faceplate. See Figure 1.

Blank faceplates

LMM+ in slot 1

Captive screws

Blank faceplates

LMM+ in slot 1

Captive screws

 


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6

 

TRSM Installation

 

4

 

Grasp the inject/eject handles of the module and push them outward as 
shown in Figure 2.

 

Figure 2   

 

Handles in Outward Position

 

5

 

Remove the module from the system.

 

6

 

Place the module in its antistatic bag.

 

Installing the TRSM

 

The installation procedure takes only a few minutes to complete. You need 
a small, flat-blade screwdriver. 

 

NOTE:

 

 Only the LMM may be inserted in slot one of the LANplex system. The 

system will not operate if any other module is inserted into slot one. Slot one 
of the LANplex 6004 is the bottom slot, and slot one of the LANplex 6012 is 
the first slot on the left.

 

To install the TRSM in an empty slot in the LANplex system, perform the 
following steps:

 

1

 

Discharge yourself of static electricity by placing the ESD wrist strap on your 
wrist and clipping the alligator clip to the mounting screw located next to 
the black ground symbol on the system’s right mounting bracket. See 
Figure 3. If your system does not have mounting brackets, touch the rear 
panel.

Module faceplate

Module faceplate

 


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TRSM Installation

 

7

 

Figure 3   

 

Ground Symbol for Static Discharge

 

2

 

Remove the TRSM from its antistatic bag.

 

3

 

Make sure that the inject handles are in the outward position. See Figure 4.

 

Figure 4   

 

Handles in Outward Position

 

4

 

Orient the TRSM to insert it into the LANplex system. For a LANplex 6012 
system, orient the module so that its labeling is upright. For a LANplex 6004 
system, the module’s labeling should be on your left. 

11

12

13

14

15

16

5

6

7

8

4

6

5

4

6

5

RX

TX

RX

TX

RX

TX

RX

A/M

B/M

4

5

Ground symbol

Mounting
screw hole

Module faceplate

Module faceplate

 


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8

 

TRSM Installation

 

WARNING:

 

 If the system is powered on when you are installing a module, 

do not insert any metal objects, such as a screwdriver or a finger with 
jewelry, in the open slot. This could cause burns or other bodily harm, as well 
as system damage.

 

5

 

Direct the module into the chassis by placing it between the guides of the 
selected slot and sliding the module until it stops. The module stops sliding 
when the inject handles make contact with the front of the chassis. 

Figure 5 shows a TRSM being installed in a 6012 system. Figure 6 shows a 
TRSM being installed in a 6004 system.

 

Figure 5   

 

Guiding an TRSM Module into a LANplex 6012

LANplex 6012

R

LMM in slot 1

1

Err

Run

Ethernet

Serial
Ports

A/M

B/M

2
3

INS

4
5

Port Status

1

2

3a

3b

4

5

Temp

Pwr/Unseat

Optical
Bypass

LMM

TRSM

Pwr/Unseat

Err

1

2

3

4

5

6

7

8

TRSM

1

2

1
2
3

5
6
7

4

8

1
2
3

5
6
7

4

8

 


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TRSM Installation

 

9

 

Figure 6   

 

Guiding an TRSM Module into a LANplex 6004

 

6

 

Inject the TRSM into the chassis.

 

 

If the system is powered on, when the 

 

Power/Unseat

 

 LED on the 

panel’s faceplate is yellow, inject the TRSM into the chassis by grabbing 
both ejector/injector handles and simultaneously push them inward. See 
Figure 7. 

 

 

If the system is not powered on, once you feel a slight resistance, inject 
the TRSM into the chassis.

 

7

 

Relocate the inject handles back to their center position by gently pushing 
them inward. See Figure 7.

This locks the TRSM into the chassis. The 

 

Power/Unseat

 

 LED lights green 

when the TRSM is seated. 

LMM in slot 1

TRSM

TRSM

 


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10

 

TRSM Installation

 

Figure 7   

 

Handles in Inward (Inject) Position

 

NOTE:

 

 Do not push the handles outside the center position or you will eject 

the module. These handles act as “ejectors” when pushed outward and 
“injectors” when pushed inward.

 

8

 

See the following section on “LED Activity” to verify that the TRSM has been 
properly installed. 

 

9

 

Tighten the TRSM’s securing screws using a flat-blade screwdriver.

Module faceplate

Module faceplate

 


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TRSM Installation

 

11

 

LED Activity

 

If the system is powered on, you can verify that your module is properly 
installed by observing its LEDs. Follow the troubleshooting suggestions 
below if LED activity is not normal. 

 

Normal LED Activity

 

The following LED activity is normal during installation:

 

 

The 

 

Power/Unseat

 

 LED lights yellow briefly when the module is inserted far 

enough into the chassis to use the inject/eject handles.

 

 

The

 

 Err

 

 LED lights yellow temporarily after insertion while the module runs 

diagnostics.

 

 

The 

 

Power/Unseat

 

 LED lights green, indicating that the module is 

powered on.

Once you have completed the installation procedure, only the green 

 

Power/Unseat

 

 LED should remain lit. 

 

Troubleshooting

 

If LED activity is not normal, check the troubleshooting suggestions 
listed below. 

 

 

If the 

 

Power/Unseat

 

 LED remains yellow, the module is not fully seated in 

the chassis. Eject and re-insert the module as described in the installation 
procedure starting on page 6.

 

If the Err LED remains yellow, contact 3Com Technical Support for additional 
assistance.

If the Power/Unseat LED does not light green when the module is 
powered on, contact 3Com Technical Support for assistance.

NOTE:

 For 3Com Technical Support information, see Appendix B: Technical 

Support in the LANplex 6000 Getting Started guide. 

 


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12

TRSM Components

TRSM 
Components

The main components of the TRSM include board status LEDs, eight port 
status LEDs, eight port speed LEDs, two port mode LEDs, and eight Token 
Ring shielded RJ-45 connectors. Figure 8 shows the front panel of the TRSM. 

Figure 8   TRSM Option Module 

Ports 5-8

Ports 1-4

1

2

3

4

Pwr/Unseat

Err

5

6

7

8

Port Status

Module status LEDs

Securing screw

Inject/eject handle

Inject/eject handle
Securing screw

TRSM

1
2
3

5
6
7

4

8

Port Speed

2

1

Hub Port

1
2
3

5
6
7

4

8

Port status LEDs

Port speed LEDs

Port mode LEDs

Ports 1 and 2
Station/lobe switchable ports

 


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TRSM Components

13

Status LEDs

Each TRSM contains two Module Status LEDs and eight Port Status LEDs. 
Depending on the condition, each LED is either green or yellow. Table 1 
describes these LEDs.

Table 1  FDDI/Ethernet Switching Module LEDs

LEDs

Name

Color

Description

Module 
Status

Pwr/Unseat

Green

Yellow

Indicates that the module is powered on

Indicates that the module is not fully 
plugged into the backplane

Err
(Error)

Yellow

Indicates either that an error has 
occurred or that the module has failed a 
diagnostic procedure

Port 
Status

Port Status 
1 - 8

Port Speed
1 - 8

Port Mode
1 - 2

Green

Yellow

Green

Yellow

Yellow

Green 

Indicates that the associated port is active

Indicates that an error condition has 
occurred with the associated port or that 
the port is disabled

Indicates that the port is running at 
16Mbps

Indicates that the port is running at 
4Mbps

Indicates that the ports are configured as 
lobes and can accept an external station 
connection

Indicates that a station is attached to the 
lobe port

 


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14

Pin Assignments

Pin Assignments

Table 2 provides the pin assignments for the TRSM’s eight (RJ-45) ports in 
station mode. Table 3 provides the pin assignments for ports 1 and 2 when 
configured as lobes.

Table 2  Station Mode TRSM (RJ-45) Pin Assignments 

Pin No.

Signal

Description

1

Not used

2

Not used

3

TX-

Transmit-

4

RX+

Receive+

5

RX-

Receive-

6

TX+

Transmit+

7

Not used

8

Not used

Table 3  Lobe Mode TRSM (RJ-45) Pin Assignments 

Pin No.

Signal

Description

1

Not used

2

Not used

3

RX-

Receive-

4

TX+

Transmit+

5

TX-

Transmit-

6

RX+

Receive+

7

Not used

8

Not used

 


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Documentation Comments

15

Documentation 
Comments

Your suggestions are very important to us and will help make LANplex 
documentation more useful to you. Please email comments about this 
guide to: sdtechpubs_comments@3Mail.3Com.com

Please include the following information when commenting: 

Document title 

Document part number (listed on back cover of document)

Page number (if appropriate)

Example:

LANplex 6000 Planning Your Site

Part No. 801-00251-000

Page 2-5 (chapter 2, page 5)

 


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16

3Com Corporation 
5400 Bayfront Pla a
Santa Clara, California

5052- 154

© 3Com Corporation, 1995. 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.

3Com and LANplex are registered trademarks of 3Com Corporation. 3Com registered trademarks are registered
in the United States, and may or may not be registered in other countries. Other brand and product names may
be registered trademarks or trademarks of their respective holders.

Part No. 801-00194-000
Published December 1995
Revision 01