3COM SuperStack II 32x, SuperStack II 52x User Manual

®

http://www.3com.com/

Installing the

SuperStack® II NETBuilder®

Token Ring and FRAD

Bridge/Router

Models 32x and 52x

Part No. 09-0848-003

Published May 1997

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 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 Unpublished rights reserved under the copyright laws of the United States.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.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com, NETBuilder, and SuperStack are registered trademarks of 3Com Corporation. 3TECH is a trademark of 3Com Corporation. 3ComFacts is a service mark of 3Com Corporation.

CompuServe is a registered trademark of CompuServe, Inc. IBM is a registered trademark of International Business Machines Corporation. AppleTalk is a registered trademark of Apple Corporation. Banyan and VINES are registered trademarks of Banyan Systems. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Limited. XNS is a trademark of Xerox Corporation. Siemens and EWSD are registered trademarks of Siemens Aktiengesellschaft. AT&T and 5ESS are registered trademarks of American Telephone and Telegraph. DMS is a registered trademark of Nothern Telecom Limited.

Other brand and product names may be registered trademarks or trademarks of their respective holders.

Guide written by Ramona Boersma. Edited by Amy Guzules. Technical illustration by Debra Knodel. Production by Ramona Boersma.

Electromagnetic Compatibility Information

Classes

Various national agencies (in the United States, The Federal Communications Commission (FCC)) govern the levels of electromagnetic emissions from digital devices. Electromagnetic emissions can interfere with radio and television transmission. To reduce the risk of harmful interference these agencies have established requirements for manufacturers of digital devices

The manufacturer of a digital device must test and label a product to inform an end-user of the maximum emission level from the product when used in accordance with its instructions. The emission levels encountered are classified as Class A or Class B. A system that meets the Class A requirement can be marketed for use in an industrial or a commercial area. A system that meets the more stringent Class B requirement can be marketed for use in a residential area in addition to an industrial or a commercial area.

The end user is generally held responsible for ensuring that his system is suitable for its environment as stated in the above paragraph and bears the financial responsibility for correcting any harmful interference.

ii

Modifications

Modifications or changes made to this device, and not approved by 3Com, may void the authority granted by the FCC, or other such agency, to operate this equipment.

Shielded Cables

Connections between 3Com equipment and other equipment and peripherals must be made using shielded cables in order to maintain compliance with FCC, and other agency, electromagnetic frequency emissions limits. This statement does not apply to the ISDN cable or 10BASE-T cables.

Federal Communications Commission Notice

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can create radio frequency energy and, if not installed and used inaccordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area can cause harmful interference in which case the user will be required to correct the interference at his own expense.

Canadian Notice

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the Department of Communications.

Avis Canadien

Cet appareil numérique respecte les limites bruits radioélectriques applicables aux appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur: “Appareils Numériques”, NMB-003 édictée par le ministre des Communications.

Japanese Notice

Type Approval Information

This apparatus has been approved for use for connection to the following public telecommunication services: ISDN basic access, X.25 (V.24, V.36, and X.21), X.21 leased lines, X.21bis leased lines (V.24 and V.36). Any other usage will invalidate the approval of the apparatus if as a result it then ceases to conform against the standards against which approval was granted.

Notice

The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational, and safety requirements. The Department does not guarantee the equipment will operate to the users’ satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the inside wiring associated with a single line individual service may be extended by means of a certified connector assembly. The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

CAUTION: Users should not attempt to make electrical ground connections by themselves, but should contact the appropriate inspection authority or an electrician, as appropriate.

iii

CE Notice

Marking by the following symbol indicates compliance of this equipment with the EMC and Telecom Directives of the European Community. Such marking is indicative that this equipment meets or exceeds the following technical standards:

■EN 55022 — Limits and methods of measurement of radio interference characteristics of information technology equipment.

■EN 50082-1 — Electromagnetic compatibility – generic immunity standard part 1: residential, commercial, and light industrial.

■I-CTR2 — For connection to X.25 packet switched services and X.21 leased lines.

■I-CTR3 — For models with ISDN interfaces: connection to basic rate ISDN services.

iv

CONTENTS

ABOUT THIS GUIDE

	Conventions	1
1 INSTALLING THE HARDWARE
	Required Equipment		1-1
	Mounting 1-3
	Rack-Mount Kit		1-3
	Installing on a Tabletop			1-3
	Stacking with Brackets			1-4
	Installing in a Rack		1-4
	Cabling the Connectors			1-5
	Cabling the LAN Connector (Models 323, 327, and 52x) 1-6
	Cabling the ISDN Connector (Model 52x) 1-6
	Cabling the Serial Connectors				1-7
	Models 32x (DTE mode)				1-8
	Models 32x (DCE-like mode)					1-8
	Models 52x (DTE mode)				1-9
	Models 52x (DCE-like mode)					1-9
	Attaching a Redundant Power System					1-10
	Connecting a PC, Terminal, or Modem 1-11
	Shutting Down	1-12
2 OVERVIEW
	Model Features	2-1
	Chassis Panels	2-1
	LEDs 2-3
	Hardware Interrupt Switch			2-3

v

	Connectors and Cables		2-3
	Console Cables	2-3
	PC Cable	2-4
	Terminal Cable		2-5
	Modem Cable		2-6
	LAN Connectors and Cables				2-6
	UTP Connector and Cable				2-6
	STP Connector and Cable				2-7
	Cabling Standards			2-8
	Serial Cables	2-9
	V.35 to V.35 DCE Cable (32x)					2-9
	V.35 to V.35 Direct Connect Cable (32x)							2-10
	UNIVERSAL to V.35 Adapter Cable						2-11
	UNIVERSAL to V.35 Direct Connect Cable							2-12
	UNIVERSAL to RS-449/V.36 DCE Cable							2-13
	UNIVERSAL to RS-449/V.36 Direct Connect Cable 2-14
	UNIVERSAL to RS-232 DCE Cable						2-15
	UNIVERSAL to RS-232 Direct Connect Cable 2-16
	RS-232 to RS-232 DCE Cable					2-17
	RS-232 to RS-232 Direct Connect Cable							2-18
	UNIVERSAL to X.21 Adapter Cable						2-19
	ISDN Cable (Model 52x )			2-20
	Physical Specifications		2-21
3
	UPGRADING MEMORY
	Removing the Cover		3-1
	Installing Memory	3-2
	Reinstalling the Cover		3-3
4
	TROUBLESHOOTING
	Troubleshooting During the Test Phase						4-2
	Troubleshooting During the Load Phase						4-2
	LED Meanings 4-3

Troubleshooting the Token Ring Connection 4-4

vi

A PROVISIONING YOUR ISDN LINE

	Ordering North American ISDN BRI Services					A-1
	North American Switch Provisioning Tables					A-3
	AT&T 5ESS Switch	A-4
	AT&T 5ESS Custom Switch			A-5
	DMS 100 and National ISDN			A-6
	Siemens EWSD Switch		A-7
	SPIDs A-7
	NT1s and Power Supplies		A-8
	Ordering German ISDN BRI Services				A-9
B TECHNICAL SUPPORT
	Online Technical Services		B-1
	World Wide Web Site		B-1
	3Com Bulletin Board Service			B-1
	Access by Analog Modem			B-2
	Access by Digital Modem			B-2
	3ComFacts Automated Fax Service				B-2
	3ComForum on CompuServe Online Service B-3
	Support from Your Network Supplier				B-3
	Support from 3Com	B-4
	Returning Products for Repair			B-5

INDEX

3COM CORPORATION LIMITED WARRANTY

vii

viii

ABOUT THIS GUIDE

This guide includes complete hardware installation and cabling information for your SuperStack® II NETBuilder® bridge/router model 32x or 52x.

This guide is for the following audience:

■Inexperienced end users configuring their first internetworking device

■Experienced network administrators who are configuring the central node as well as the peripheral node (boundary router)

■Experienced system integrators

If the information in the release notes shipped with your product differs from the information in this guide, follow the release notes.

Conventions	Table 1 provides a list of notice icons that are used throughout this
	guide.
	Table 1	Notice Icons
	Icon	Notice Type	Alerts you to...
		Information note	Important features or instructions
		Caution	Risk of personal safety, system damage, or loss
			of data
		Warning	Risk of severe personal injury

2 CHAPTER : ABOUT THIS GUIDE

INSTALLING THE HARDWARE

1

	This chapter describes how to install your SuperStack II NETBuilder
	bridge/router.
Required	Table 1-1 lists the items you receive in the shipping carton and items
Equipment	you need to provide.
Table 1-1 Equipment Received and Equipment Needed
Shipping carton	SuperStack II NETBuilder bridge/router
contents	Power cable
	Rack-mount kit
	Software CD-ROM* (models 320, 327, and 527 only)
	Documentation and documentation CD-ROM
	NETBuilder Upgrade Utilities CD-ROM (models 320, 327, and 527 only)

What you need to Unshielded twisted pair (UTP) or shielded twisted pair (STP) cable for LAN connection

provide	(Models 323, 327, 523, and 527 only)
	Integrated Services Digital Network (ISDN) cable for ISDN connection (Model 52x only)
	A cable (3Com® part number 3C8101) to connect to a SuperStack II Redundant Power
	System (RPS).
	Terminal, PC, or modem and cable

(continued)

1-2 CHAPTER 1: INSTALLING THE HARDWARE

Table 1-1 Equipment Received and Equipment Needed (continued)

What you need to provide (continued)

For serial connection, provide the following:

Channel service unit/digital service unit (CSU/DSU) device or modem if desired Up to three of the following cables:

X.21 or V.35 adapter cable

UNIVERSAL connector to RS-449/V.36 data communications equipment (DCE) cable UNIVERSAL to RS-232 DCE cable

UNIVERSAL to V.35 direct connect cable UNIVERSAL to RS-232 direct connect cable UNIVERSAL to RS-449/V.36 direct connect cable RS-232 to RS-232 direct connect cable

V.35 to V.35 direct connect cable

V.35 to V.35 DCE cable RS-232 to RS-232 DCE cable

*The software is preinstalled in the flash memory drive of the bridge/router and automatically loads when you turn on the power. The software CD-ROM is for software recovery purposes only.

WARNING: To eliminate cable noise emission in excess of FCC regulations, part 15, subpart J, and EN55022B, all interconnection cables should be equipped with shielded connectors, the backshells of which must completely surround the cable shield.

For more information on cables, refer to Chapter 2.

Mounting 1-3

Mounting	You can mount your bridge/router on a tabletop, stack it, or mount it
	in a rack.

Rack-Mount Kit The rack-mount kit contains the following hardware:

Two rack-mount brackets	Two stacking brackets
Six M4x10 mm Phillips flathead	Four M4x8 mm Phillips
	panhead screws for use
machine screws for use	with stacking brackets
with rack-mount brackets

Four adhesive-backed rubber feet

Figure 1-1 Rack-Mount Kit Contents

Installing on a If you plan to install your Tabletop bridge/router on a tabletop, attach

the rubber feet as shown.

Attach feet to corners of chassis bottom

Flex plastic sheet until feet pop loose

1-4 CHAPTER 1: INSTALLING THE HARDWARE

Stacking with The stacking brackets can be used to securely stack several Brackets bridge/routers on a tabletop. Use the stacking brackets and the

M4x8 mm panhead stacking screws shown in Figure 1-1.

Attach brackets as shown to lock two units together

Place screws in holes as shown

Bottom bracket acts as a support

Installing in a Rack To install the bridge/router in a rack, use the rack-mount brackets and the M4x10 mm flathead rack-mount screws shown in Figure 1-1 and follow these steps:

1Secure the rack-mount brackets to each side of the chassis using three flathead screws per bracket.

Cabling the Connectors

1-5

2Hold the chassis between the poles of the rack and attach the brackets to the rack using panhead screws (you must provide these screws). Tighten each screw securely.

	CAUTION: Using fewer than two screws to secure the brackets to the
	rack may cause the boundary router to fall and sustain damage not
	covered by the warranty.
Cabling the	This section describes how to cable the LAN, ISDN, and serial
Connectors	connectors on your bridge/router.
	If you are planning to connect your SuperStack II bridge/router directly
	to another SuperStack II system or to a NETBuilder II® bridge/router
	with an HSS V.35 3-port module installed, you must use a modem
	eliminator between the two devices. Be sure the default setting of
	External for the -PATH CLock parameter is maintained on each device.
	Contact your 3Com supplier for a list of suggested modem eliminators.

1-6 CHAPTER 1: INSTALLING THE HARDWARE

Cabling the LAN

Connector (Models

323, 327, and 52x)

This section applies to models 323, 327, and 52x only. You can use only one type of LAN connector on each bridge/router. The following figure shows how to cable a LAN connector.

	LAN
UTP	STP
	16Mb
	Active
	Fault

UTP

cable STP OR cable

Cabling the ISDN Connector (Model 52x)

For more information on AUI and 10BASE-T cables, refer to Chapter 2.

This section applies to model 52x bridge/routers only. The following figure shows how to cable an ISDN connector.

	LAN	S/T	ISDN	B1 B2
UTP	STP		Line	Link
	16Mb		Act
				Connect
	Active
			Line
				Fault
	Fault		Error
				Wall outlet

ISDN cable

Network termination (nt1)/power supply*

*required for U.S. and Canada only

The NT1 and power supply shown in the figure above must either be leased from the telephone company or purchased from an ISDN equipment vendor in the U.S. and Canada only. In other countries, you do not need to provide this equipment because the function of the equipment is provided by the ISDN switch. For more information about ISDN, refer to Appendix A.

For more information on ISDN cables, refer to Chapter 2.

Cabling the Connectors

1-7

Cabling the Serial

Connectors

The serial connectors provide the following options:

■The UNIVERSAL connector can be converted to a V.35, V.36, X.21, RS-449, or RS-232 connector.

■All serial connectors can function in either DTE or DCE-like mode, which allows you to connect a serial connector to either a CSU/DSU device or modem (DTE mode), or to an IBM cluster controller (DCE-like mode). A connection to an IBM cluster controller must be made using a permanent leased line only. You can operate the serial connectors in any combination of DTE and DCE-like modes.

The cables you use determine the serial connector function. Table 1-2 lists the types of devices available for serial connections, cable options for connection to each device, and if the cable is sold by 3Com. Cables used for IBM cluster controller connectivity (DCE-like mode) are referred to as direct connect cables.

Table 1-2 Serial Connector Cabling Information

			Connector
Connection to		Connector*	Mode	Cable Name	Sold by 3Com?
V.35	CSU/DSU device or	V.35	DTE	V.35 to V.35 DCE cable	No. Easily obtained from
modem					cable manufacturer.
V.35	CSU/DSU device or	UNIVERSAL	DTE	V.35 adapter cable	Yes (3C8035).
modem
V.35	IBM cluster controller	V.35	DCE-like	V.35 to V.35 direct connect	No. See Chapter 2 for
				cable	pin assignments.
V.35	IBM cluster controller	UNIVERSAL	DCE-like	UNIVERSAL to V.35 direct	Yes (3C8135).
				connect cable
X.21	CSU/DSU device or	UNIVERSAL	DTE	X.21 adapter cable	Yes (3C8021).
modem
RS-449 or V.36 CSU/DSU		UNIVERSAL	DTE	UNIVERSAL to RS-449/V.36	No. See Chapter 2 for
device or modem				DCE cable	pin assignments.
RS-449 or V.36 IBM cluster		UNIVERSAL	DCE-like	UNIVERSAL to RS-449/V.36	No. See Chapter 2 for
controller				direct connect cable	pin assignments.
RS-232 CSU/DSU device or		UNIVERSAL	DTE	UNIVERSAL to RS-232 DCE	Yes (3C8023).
modem				cable
RS-232 CSU/DSU device or		RS-232	DTE	RS-232 to RS-232 DCE cable	No. Easily obtained from
modem					cable manufacturer.
RS-232 IBM cluster controller		UNIVERSAL	DCE-like	UNIVERSAL to RS-232 direct	Yes (3C8123).
				connect cable
RS-232 IBM cluster controller		RS-232	DCE-like	RS-232 to RS-232 direct	Yes (3C8132).
				connect cable

*If you cable the UNIVERSAL connector, you need to perform some software configuration. For more information, refer to the software guide.

1-8 CHAPTER 1: INSTALLING THE HARDWARE

The following figures show how to cable the serial connectors.

Models 32x (DTE mode)

V.35 (A)	SERIAL		SuperStack II
		A B C	NETBuilder
UNIVERSAL (B)	RS-232 (C)	Link	Console	Run
		Active
			Status	Load
		Fault
				Test

Fwd Power

SYSTEM /Fault

RS-232 DCE cable

V.35 DCE cable

V.35 adapter

X.21 adapter RS-449/V.36 DCE

or RS-232 DCE cables

Models 32x (DCE-like mode)

	SERIAL		SuperStack II
V.35 (A)	RS-232 (C)	B C	NETBuilder
UNIVERSAL (B)		Link	Console	Run
		Active
			Status	Load
		Fault
				Test

Fwd Power

SYSTEM /Fault

V.35 direct connect cable

	RS-232 direct	IBM cluster
	connect cable
		controller

V.35 direct connect RS-449/V.36 direct connect

or RS-232 direct connect cables

Cabling the Connectors

1-9

Models 52x (DTE mode)

S/T	ISDN	B1 B2			SERIAL
	Line		Link		B	C
	Act			UNIVERSAL (B)	RS-232 (C)	Link
			Connect			Active
	Line
			Fault			Fault
	Error

RS-232 DCE cable

V.35 adapter

X.21 adapter RS-449/V.36 DCE

or RS-232 DCE cables

Models 52x (DCE-like mode)

S/T	ISDN	B1 B2			SERIAL
	Line		Link		B	C
	Act			UNIVERSAL (B)	RS-232 (C)	Link
			Connect			Active
	Line
			Fault			Fault
	Error

	IBM cluster	RS-232 direct
		connect cable
	controller

V.35 direct connect RS-449/V.36 direct connect

or RS-232 direct connect cables

1-10 CHAPTER 1: INSTALLING THE HARDWARE

Attaching a	You can attach your SuperStack II bridge/router to a SuperStack II
Redundant Power	Redundant Power System (RPS). You will need to order the connecting
System	cable (part number 3C8101) from 3Com. The following figure shows
	where to attach this cable.
	Rear panel of unit

Attach RPS cable here

For full power supply redundancy, attach one end of the RPS cable to the rear panel on the bridge/router and the other end to the RPS. Then attach one end of the power cord to the rear panel on the bridge/router and the other end to a power outlet.

In this configuration, the internal supply provides power. If the internal supply fails or is switched off, or if there is a power failure, the RPS is activated and the bridge/router reboots.

To reset a bridge/router in this configuration, turn the power off, wait 5 seconds and turn it back on. The bridge/router switches to the RPS, then switches back to the internal supply to reboot.

CAUTION: For system susceptibility protection, always leave the AC cord attached to the bridge/router hardware and to a power outlet.

Internal power supply failure is rare. If it occurs, the power switch on your bridge/router will not operate. To reboot you will need to unplug the RPS cable and then plug it back in. Replace your bridge/router with another bridge/router that has a functioning internal power supply as soon as possible. Contact your 3Com representative to replace your bridge/router.

Connecting a PC, Terminal, or Modem 1-11

Connecting a PC,	Connect a PC running a terminal emulation program, a terminal, or a
Terminal, or	modem to the Console port on the SuperStack II bridge/router to
Modem	configure the bridge/router software and review startup and system
	operation messages.
	To connect a PC, terminal, or modem to the DPE module, follow these
	steps:

1Obtain a cable to connect the console to the Console port on the bridge/router. See “Console Cables” on page 2-3 for cable pinouts.

The Console port is a 9-pin male connector.

For the PC, use a 9-pin female to 9-pin female PC cable. A null modem-type cable may be used.

For the terminal, use a 9-pin female to 25-pin terminal cable. A null modem-type cable may be used.

For the modem, use a 9-pin female to 25-pin male modem cable. A straight-through-type cable may be used.

2Connect one end of the cable to the Console port on the SuperStack II system and the other end to the serial port on the back of your console.

3Verify that configurable parameters of your console match the configuration settings of the Console port specified in Table 1-3.

Table 1-3 CONSOLE Port Configuration Settings

Characteristic	Setting
Baud rate	9600
Databits	8
Parity	None
Stop bits	1
DTR	Ignored
Duplex	Full
Echo	Off
Flow control	X-on/X-off

4 Turn on the console.

1-12 CHAPTER 1: INSTALLING THE HARDWARE

Shutting Down If your SuperStack II system is not connected to an RPS, turn off the power by pressing the off (0) side of the power switch on the back panel. If your system is connected to an RPS, turn off the power by unplugging the RPS cable from the system and then pressing the off (0) side of the power switch.

OVERVIEW

2

This chapter provides an overview of the SuperStack II NETBuilder bridge/router, including information on:

■Model features

■Chassis panels

■LEDs

■DIP switches

■Hardware interrupt switch

■Connectors and cables

■Physical specifications

Model Features			Table 2-1 lists each SuperStack II NETBuilder model along with
			memory, port, and upgrade information.
Table 2-1 SuperStack II NETBuilder Model Features
	Flash			Active WAN		Flash Memory	DRAM	Software
Model	Memory	DRAM	LAN Ports	Ports		Upgradeable To	Upgradeable To	Upgradeable
320	4 MB	8 MB	None	3 serial		8 MB	12 MB	Yes
323	4 MB	8 MB	1 UTP or	1 serial		8 MB	12 MB	Yes
			STP	1	backup serial
327	4 MB	8 MB	1 UTP or	3 serial		8 MB	12 MB	No
			STP
523	4 MB	8 MB	1 UTP or	1	ISDN BRI	8 MB	12 MB	Yes
			STP	1	serial
527	4 MB	8 MB	1 UTP or	1	ISDN BRI	8 MB	12 MB	No
			STP	2	serial

Chassis Panels

The following figures show the front and back panels for each chassis.