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:
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:
(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Unpublished rights reserved under the copyright laws of the United States.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.
3Com Corporation, 1997.
Use, duplication, or disclosure by the Government is subject to restrictions as set
Use, reproduction, or disclosure is subject to restrictions set forth in subparagraph
All rights reserved. No part of this documentation may be
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:
contact the appropriate inspection authority or an electrician, as appropriate.
Users should not attempt to make electrical ground connections by themselves, but should
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
■
technology equipment.
EN 50082-1
■
commercial, and light industrial.
I-CTR2
■
■
I-CTR3
— Limits and methods of measurement of radio interference characteristics of information
— Electromagnetic compatibility – generic immunity standard part 1: residential,
— For connection to X.25 packet switched services and X.21 leased lines.
— For models with ISDN interfaces: connection to basic rate ISDN services.
iv
C
ONTENTS
BOUT THIS GUIDE
A
Conventions 1
1
I
NSTALLING 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 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
VERVIEW
O
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
4
vi
PGRADING MEMORY
U
Removing the Cover 3-1
Installing Memory 3-2
Reinstalling the Cover 3-3
ROUBLESHOOTING
T
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
A
ROVISIONING YOUR
P
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
ISDN L
INE
B
ECHNICAL SUPPORT
T
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
I
NDEX
3COM C
ORPORATION LIMITED WARRANTY
vii
viii
A
BOUT
T
HIS
G
UIDE
Conventions
This guide includes complete hardware installation and cabling
information for your SuperStack
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.
Table 1 provides a list of notice icons that are used throughout this
guide.
Table 1
Icon
Notice Icons
Notice TypeAlerts you to...
Information note
®
II NETBuilder® bridge/router model
Important features or instructions
CautionRisk of personal safety, system damage, or loss
WarningRisk of severe personal injury
of data
HAPTER
2
C
BOUT THIS GUIDE
: A
1
I
NSTALLING THE
This chapter describes how to install your SuperStack II NETBuilder
bridge/router.
H
ARDWARE
Required
Equipment
Table 1-1
Shipping carton
contents
What you need to
provide
(continued)
Equipment Received and Equipment Needed
Table 1-1 lists the items you receive in the shipping carton and items
you need to provide.
SuperStack II NETBuilder bridge/router
Power cable
Rack-mount kit
*
Software CD-ROM
Documentation and documentation CD-ROM
NETBuilder Upgrade Utilities CD-ROM (models 320, 327, and 527 only)
Unshielded twisted pair (UTP) or shielded twisted pair (STP) cable for LAN connection
(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
(models 320, 327, and 527 only)
1-2
HAPTER
C
NSTALLING THE HARDWARE
1: I
Table 1-1
What you need to
provide
* 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.
Equipment Received and Equipment Needed (continued)
(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
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
Rack-Mount KitThe rack-mount kit contains the following hardware:
Installing on a
Tabletop
You can mount your bridge/router on a tabletop, stack it, or mount it
in a rack.
Two rack-mount brackets
Six M4x10 mm Phillips flathead
machine screws for use
with rack-mount brackets
Two stacking brackets
Four M4x8 mm Phillips
panhead screws for use
with stacking brackets
Figure 1-1 Rack-Mount Kit Contents
If you plan to install your
bridge/router on a tabletop, attach
Four adhesive-backed
rubber feet
Attach feet to corners
of chassis bottom
the rubber feet as shown.
Flex plastic sheet until
feet pop loose
1-4CHAPTER 1: INSTALLINGTHE HARDWARE
Stacking with
Brackets
The stacking brackets can be used to securely stack several
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 RackTo 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:
1 Secure the rack-mount brackets to each side of the chassis using three
flathead screws per bracket.
Cabling the Connectors1-5
2 Hold 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
Connectors
This section describes how to cable the LAN, ISDN, and serial
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.
1-6CHAPTER 1: INSTALLINGTHE HARDWARE
LAN
16Mb
Active
Fault
UTP
STP
UTP
cable
OR
STP
cable
Cabling the LAN
Connector (Models
323, 327, and 52x)
Cabling the ISDN
Connector
(Model 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.
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
UTP
STP
16Mb
Active
Fault
ISDN
B1
S/T
B2
Line
Link
Act
Connect
Line
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 Connectors1-7
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 toConnector
V.35 CSU/DSU device or
modem
V.35 CSU/DSU device or
modem
V.35 IBM cluster controllerV.35DCE-likeV.35 to V.35 direct connect
V.35 IBM cluster controllerUNIVERSAL DCE-likeUNIVERSAL to V.35 direct
X.21 CSU/DSU device or
modem
RS-449 or V.36 CSU/DSU
device or modem
RS-449 or V.36 IBM cluster
controller
RS-232 CSU/DSU device or
modem
RS-232 CSU/DSU device or
modem
RS-232 IBM cluster controller UNIVERSAL DCE-likeUNIVERSAL to RS-232 direct
RS-232 IBM cluster controller RS-232DCE-likeRS-232 to RS-232 direct
*If you cable the UNIVERSAL connector, you need to perform some software configuration. For more information, refer to the
software guide.
V.35DTEV.35 to V.35 DCE cableNo. Easily obtained from
UNIVERSAL DTEV.35 adapter cableYes (3C8035).
UNIVERSAL DTEX.21 adapter cableYes (3C8021).
UNIVERSAL DTEUNIVERSAL to RS-449/V.36
UNIVERSAL DCE-likeUNIVERSAL to RS-449/V.36
UNIVERSAL DTEUNIVERSAL to RS-232 DCE
RS-232DTERS-232 to RS-232 DCE cable No. Easily obtained from
Mode
Cable NameSold by 3Com?
cable manufacturer.
cable
connect cable
DCE cable
direct connect cable
cable
connect cable
connect cable
No. See Chapter 2 for
pin assignments.
Yes (3C8135).
No. See Chapter 2 for
pin assignments.
No. See Chapter 2 for
pin assignments.
Yes (3C8023).
cable manufacturer.
Yes (3C8123).
Yes (3C8132).
1-8CHAPTER 1: INSTALLINGTHE HARDWARE
The following figures show how to cable the serial connectors.
Models 32x (DTE mode)
V.35 (A)
UNIVERSAL (B)
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)
V.35 (A)
UNIVERSAL (B)
SERIAL
SERIAL
RS-232 (C)
RS-232 DCE cable
B
RS-232 (C)
C
Link
Active
Fault
A
B
C
Console
Link
Active
Fault
SuperStack II
NETBuilder
Status
Console
SYSTEM
SuperStack II
NETBuilder
Run
Load
Test
Fwd Power
/Fault
Status
Run
Load
Test
SYSTEM
Fwd Power
/Fault
V.35 direct
connect cable
RS-232 direct
connect cable
V.35 direct connect
RS-449/V.36 direct connect
or RS-232 direct connect cables
IBM cluster
controller
Models 52x (DTE mode)
Cabling the Connectors1-9
ISDN
B1
S/T
B2
Line
Link
Act
Connect
Line
Fault
Error
UNIVERSAL (B)
V.35 adapter
X.21 adapter
RS-449/V.36 DCE
or RS-232 DCE cables
Models 52x (DCE-like mode)
ISDN
B1
S/T
B2
Line
Link
Act
Connect
Line
Fault
Error
UNIVERSAL (B)
SERIAL
RS-232 (C)
RS-232 DCE cable
SERIAL
RS-232 (C)
B
C
Link
Active
Fault
B
C
Link
Active
Fault
IBM cluster
controller
RS-232 direct
connect cable
V.35 direct connect
RS-449/V.36 direct connect
or RS-232 direct connect cables
1-10CHAPTER 1: INSTALLINGTHE HARDWARE
Attaching a
Redundant Power
System
You can attach your SuperStack II bridge/router to a SuperStack II
Redundant Power System (RPS). You will need to order the connecting
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 Modem1-11
Connecting a PC,
Terminal, or
Modem
Connect a PC running a terminal emulation program, a terminal, or a
modem to the Console port on the SuperStack II bridge/router to
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:
1 Obtain 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.
2 Connect 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.
3 Verify that configurable parameters of your console match the
configuration settings of the Console port specified in Table 1-3.
Shutting DownIf 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 FeaturesTable 2-1 lists each SuperStack II NETBuilder model along with