Digital Equipment DECbrouter 90 User manual

DECbrouter90T
InstallationandOperatingInformation
Order Number: EK–DECBR–OM. A01

First Edition, April 1993
The information in this document is subject to change without notice and should not be
construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation
assumes no responsibility for any errors that may appear in this document.
The software described in this document is furnished under a license and may be used or copied
only in accordance with the terms of such license.
No responsibility is assumed for the use or reliability of software on equipment that is not
supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227-7013.
FCC NOTICE: The equipment described in this manual generates, uses, and may emit radio
frequency energy. The equipment has been type tested and found to comply with the limits for
a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such radio frequency interference when operated
in a commercial environment. Operation of this equipment in a residential area may cause
interference, in which case the user at his own expense may be required to take measures to
correct the interference.
© Digital Equipment Corporation 1993.
All Rights Reserved.
The following are trademarks of Digital Equipment Corporation: DEC, DECbridge, DECbrouter,
DECconnect, DECrouter, DECstation, DEC EtherWORKS, HUBwatch, ThinWire, and the Digital
logo.
All other trademarks and registered trademarks are the property of their respective holders.
This document was prepared using VAX DOCUMENT, Version 2.1.

Contents
Preface ..................................................... vii
1 Overview
Features.................................................. 1–1
DECbrouter90T1........................................ 1–2
DECbrouter90T2........................................ 1–2
DECbrouter90T2A ...................................... 1–3
TypicalConfigurations....................................... 1–5
Installation ............................................... 1–8
LEDsandConnectors ....................................... 1–9
2 Installation
StandaloneInstallation ...................................... 2–1
Selectalocation. ........................................ 2–1
Place the DECbrouter 90 on a table. . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Mount the DECbrouter 90 on a wall. . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Mount the DECbrouter 90 on a wall. . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Connectthecables. ...................................... 2–4
Install and verify devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
BackplaneInstallation....................................... 2–10
Removethebackcover. ................................... 2–10
Mount the DECbrouter 90 in the backplane. . . . . . . . . . . . . . . . . . . . 2–10
Install and verify devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
iii

3 Troubleshooting
BeforeYouStart............................................ 3–1
DECbrouter 90 Standalone Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 3–1
DECbrouter 90 Backplane Configuration Troubleshooting . . . . . . . . . . . . 3–3
A Specifications and Parts List
PhysicalDimensions ........................................ A–1
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–1
OperatingEnvironment................................... A–2
ShippingEnvironment.................................... A–2
ElectricalSpecifications...................................... A–2
PowerSupply........................................... A–3
PowerInput............................................ A–3
PartsList................................................. A–4
B Related Documentation
C DECbrouter 90 Installation Information for the United
Kingdom
ServiceCategories .......................................... C–1
HostPowerRating.......................................... C–2
ModuleIsolation ........................................... C–3
SafetyStatus.............................................. C–3
CableApproval ............................................ C–3
SupportedCables........................................... C–3
Equipment Between the Approved Module and a Digital Circuit
(PTT) .................................................... C–4
Index
Figures
1–1 Typical DECbrouter 90T1 Connection . . . . . . . . . . . . . . . . . . 1–6
1–2 Typical DECbrouter 90T2 or DECbrouter 90T2A
Connection....................................... 1–7
1–3 DECbrouter90LEDs............................... 1–9
2–1 Removing the Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2–2 Mounting the DECbrouter 90 . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
iv

2–3 DECbrouter 90T1 with a Twisted Pair (10BASET)
Connection....................................... 2–5
2–4 DECbrouter 90T1 with a ThinWire (10Base2) Connection . . . 2–6
2–5 DECbrouter 90T2 or DECbrouter 90T2A with a Twisted Pair
(10BASET)Connection.............................. 2–7
2–6 DECbrouter 90T2 or DECbrouter 90T2A with a ThinWire
(10Base2)Connection............................... 2–8
2–7 Removing the Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
2–8 Mounting the DECbrouter 90 . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Tables
1–1 DECbrouter 90 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1–2 DECbrouter90LEDs............................... 1–10
3–1 Troubleshooting a DECbrouter 90 Standalone Unit . . . . . . . . 3–1
3–2 Troubleshooting a DECbrouter 90 in a DEChub 90
Backplane ....................................... 3–3
A–1 X.21 Cable Connections (BC12F-06, 17-03580-01) . . . . . . . . . A–5
A–2 RS422 Cable Connections (BC12H-06, 17-03767-01) . . . . . . . A–6
A–3 V.35 Connection BC12G-06, 17-03766-01 . . . . . . . . . . . . . . . . A–8
A–4 RS530A Cable Connections BC12J-06, 17-03760-01 . . . . . . . . A–9
A–5 RS423 Cable Connections BC12K-06, 17-03761-01 . . . . . . . . . A–11
A–6 V.28/RS232 Cable Connections BC12L-06, 17-03762-01 . . . . . A–13
A–7 Cable Connections for Console Converter . . . . . . . . . . . . . . . . A–15
C–1 BABT-Approved Service Specifications . . . . . . . . . . . . . . . . . . C–2
C–2 ModulePower .................................... C–2
C–3 Cables Supported by the Approved Module . . . . . . . . . . . . . . C–3
v

Preface
This manual describes how to install and maintain the Digital Wide Area
Router/Bridge—the DECbrouter 90. This manual contains information on the
following three models:
• DECbrouter 90T1—single port
• DECbrouter 90T2—dual port
• DECbrouter 90T2A—dual port
The DECbrouter 90 is designed to work either as a standalone unit or in the
DEChub 90 backplane.
Organization
This manual contains three chapters and three appendices.
• Chapter 1 provides an overview of the DECbrouter 90 and describes the
features of the DECbrouter 90.
• Chapter 2 provides instructions for installing the Digital Wide Area
Router/Bridge.
• Chapter 3 provides basic troubleshooting information.
• Appendix A provides product specifications and a parts list.
• Appendix B lists related documents that can help you become more familiar
with your new system.
• Appendix C contains installation information, which is required for the
United Kingdom only.
vii

Conventions
This manual uses the following conventions:
Convention Meaning
Note Provides general information about the current topic.

A number in a black circle in text refers to the corresponding
number in an accompanying illustration.
viii

1
Overview
This chapter describes the features of the DECbrouter 90, shows several
typical configurations, summarizes the installation procedures for the
DECbrouter 90, and describes the DECbrouter 90 LEDs and connectors.
The DECbrouter 90 family consists of three models:
• DECbrouter 90T1
• DECbrouter 90T2
• DECbrouter 90T2A
Features
The DECbrouter 90 provides the following features:
• Choice of Ethernet in either ThinWire (10Base2) or twisted pair (10BASET)
• Choice of serial port configurations:1
EIA530A2
RS232/V.28
RS449/RS422/V.112
RS449/RS423/V.102
V.353
V.362
X.21 Leased Lines (LL)
• Console port
• Installable on a DEChub 90 backplane
1One serial port for DECbrouter 90T1 and two for either DECbrouter 90T2 or
DECbrouter 90T2A models.
2Not available for DECbrouter 90T2.
3Not available for DECbrouter 90T2A.
Overview 1–1

Overview
Features
• Simple Network Management Protocol (SNMP) through HUBwatch or
other network management system
Table 1–1 summarizes the features for each model of the DECbrouter 90.
DECbrouter 90T1
The DECbrouter 90T1 is a Digital Wide Area Router/Bridge consisting of
two interfaces and one console port. The interfaces consist of one Ethernet
interface and one synchronous serial port. The Ethernet interface is either a
ThinWire port (10Base2) or a twisted pair port (10BASET) exclusively. The
synchronous serial port supports one of the following seven standards as
determined by the cable attached to the serial port:
• EIA530A
• RS232/V.28
• RS449/RS422/V.11
• RS449/RS423/V.10
• V.35
• V.36
• X.21 Leased Lines
The console port consists of an asynchronous RS232 serial port.
DECbrouter 90T2
The DECbrouter 90T2 is a Digital Wide Area Router/Bridge consisting of
three interfaces and one console port. The interfaces consist of one Ethernet
interface and two synchronous serial ports. The Ethernet interface is either
a ThinWire (10Base2) port or a twisted pair (10BASET) port exclusively. The
synchronous serial ports support any two of the following three standards,
in any combination, as determined by the cable attached to the synchronous
serial port:
• RS232/V.28
• V.35
• X.21 Leased Lines
The console port consists of an asynchronous RS232 serial port.
1–2 Overview

Overview
Features
DECbrouter 90T2A
The DECbrouter 90T2A is a Digital Wide Area Router/Bridge consisting of
three interfaces and one console port. The interfaces consist of one Ethernet
interface and two synchronous serial ports. The Ethernet interface is either
a ThinWire (10Base2) port or a twisted pair (10BASET) port exclusively. The
synchronous serial port supports any two of the following six standards, in any
combination, as determined by the cable attached to the synchronous serial
port:
• EIA530A
• RS232/V.28
• RS449/RS422/V.11
• RS449/RS423/V.10
• V.36
• X.21
The console port consists of an asynchronous RS232 serial port.
Overview 1–3

Overview
Features
Table 1–1 summarizes the features of the DECbrouter 90 models.
Table 1–1 DECbrouter 90 Features
Features by Model Number
Interface/Console
Supported 90T1 90T2 90T2A
Interfaces 2 3 3
Ethernet1111
Synchronous Serial2122
EIA530A X – X
RS232/V.28 X X X
RS449/RS422/V.11 X – X
RS449/RS423
/V.10 X – X
V.35 X X –
V.36 X – X
X.21 Leased Lines X X X
Console 1 1 1
1Choice of either Twisted Pair (10BASET) or ThinWire (10Base2).
2Each serial port can use one of the signal configurations indicated by an "X".
1–4 Overview

Overview
Typical Configurations
Typical Configurations
The DECbrouter 90 can operate in either a standalone configuration or
installed in Digital’s DEChub 90 Ethernet backplane. Figure 1–1 shows
a typical configuration of the DECbrouter 90T1 in an Ethernet local area
network (LAN).
If you use the DECbrouter 90 as a standalone unit, then it operates without
using the DEChub 90 and uses a separate power supply. The modular power
supply connects to a 7-pin connector on the DECbrouter 90 and includes an
auto-ranging power supply and appropriate power cord for use with either 120
Volt or 240 Volt power outlets.
Overview 1–5

Overview
Typical Configurations
Figure 1–1 Typical DECbrouter 90T1 Connection
DECbrouter 90T1 DECbrouter 90T1
LAN2
Ethernet ThinWire
Modem
LAN1 Ethernet ThinWire
DECrouter 250
Modem
EIA530V.35
LJ-02754-TI0
DECbrouter 90T1
LAN3
Ethernet ThinWire
DECbrouter 90T1
Telephone
Lines
Modem
Modem
Telephone
Lines
1–6 Overview

Overview
Typical Configurations
Figure 1–2 shows a typical configuration of either the DECbrouter 90T2 or
DECbrouter 90T2A in an Ethernet LAN.
Figure 1–2 Typical DECbrouter 90T2 or DECbrouter 90T2A Connection
DECbrouter 90T2
LAN1 Ethernet ThinWire
LJ-02755-TI0
Modem
LAN2
Ethernet ThinWire
Modem
DECbrouter 90T2A
LAN4
Ethernet ThinWire
Modem
Modem
Modem
RS449
RS232
V.35
X.21
DECbrouter 90T2
LAN3
Ethernet ThinWire
DECbrouter 90T2
Telephone
Lines
Modem
X.21
Network
Host
A
DECstation
Router
Overview 1–7

Overview
Installation
Installation
The DECbrouter 90 is easy to install and use. After unpacking the DECbrouter
90:
1. Plug the connector from the power supply into your DECbrouter 90.
Connect one end of the power cord into the power supply and the other end
into a working ac power outlet.
2. Connect the DECbrouter 90 to either a properly terminated ThinWire
(10Base2) or to a twisted pair (10BASET) Ethernet device, but do not
connect to both.
3. Connect the synchronous serial ports using the cables for the various types
of connections. Refer to Appendix A, Tables A–1 through A–6, for a listing
of the different types of cables and the various connections.
4. Connect a console device to the console port.
The port status LEDs for unconnected ports should turn off when network
traffic is established.
For more detailed information on configuring the DECbrouter 90, see the
DECbrouter 90 Products Configuration and Reference - Volume 1,DECbrouter
90 Products Configuration and Reference - Volume 2, and DECbrouter 90
Products Configuration and Reference - Volume 3 manuals. For more detailed
information on installing and using the DECbrouter 90, see Chapter 2.
1–8 Overview

Overview
LEDs and Connectors
LEDs and Connectors
Figure 1–3 shows the DECbrouter 90 LEDS and Table 1–2 describes the LEDs
and connectors.
Figure 1–3 DECbrouter 90 LEDs
DECbrouter 90T1
LJ-02747-TI0.DG
10
11
12
8
9
1
2
3
4
5
6
7
DECbrouter 90T2
13
14
Overview 1–9

Overview
LEDs and Connectors
Table 1–2 DECbrouter 90 LEDs

Power indicator—Monitors the status of the +5.0 Vdc
voltage. On: The +5.0 Vdc voltage is normal.
Off: The voltage is abnormal (as in a power failure).

Network activity indicator—Monitors the network
activity.
On: There is network activity.
Off: There is no network activity.

Port 0 status indicator—Monitors the status of either
the ThinWire (10Base2) or the twisted pair (10BASET)
input to the DECbrouter 90.
On: Port 0 is functional.
Off: Port 0 has failed or has been partitioned.

Port 0 activity status indicator–Monitors the
activity of the Ethernet port.
On: The port is transmitting or receiving data.
Off: The port is not transmitting or receiving data.

Twisted Pair (10BASET) connector–Connects the
DECbrouter 90 to a 10BASET twisted pair. Not used
when the DECbrouter 90 is installed in the DEChub 90
backplane.

Port 1 serial line status indicators–Monitors the
activity of port one.
On: Port 1 is transmitting or receiving data.
Off: Port 1 is not currently transmitting or receiving
data.
(continued on next page)
1–10 Overview

Overview
LEDs and Connectors
Table 1–2 (Cont.) DECbrouter 90 LEDs

Synchronous serial port 1 connection–This port
supports the following standards:
• EIA530A1
• RS232/V.28
• RS449/RS422/V.111
• RS449/RS423/V.101
• V.352
• V.361
• X.21 leased lines

Console port connection–This port connects a
console terminal, used for managing the DECbrouter
90. The console port is an RS232, which uses a DB9
connector.

Port 0 network connector (BNC)–Connects the
DECbrouter 90 to the work group ThinWire segment.
Not used when the DECbrouter 90 is either installed
in the DEChub 90 backplane or connected through the
twisted pair (10BASET) connector.

Backplane connector–Provides Port 0 network
and power connections to the DECbrouter 90 when
the DECbrouter 90 is installed in the DEChub 90
backplane.

Power connector–Provides +5.0 volts from the
DECbrouter 90 power supply. Not used when the
DECbrouter 90 is installed in the DEChub 90
backplane.

Back cover–Comes with standalone units only. Covers
the backplane connector and contains a wall-mounting
assembly.

Port 2 serial line status indicators–Monitors the
activity of port two.
On: Port 2 is transmitting or receiving data.
Off: Port 2 is not transmitting or receiving data.
1Not available on DECbrouter 90T2.
2Not available on DECbrouter 90T2A.
(continued on next page)
Overview 1–11

Overview
LEDs and Connectors
Table 1–2 (Cont.) DECbrouter 90 LEDs
 
Synchronous serial port 2 connection–This
connection supports one of the following standards:
• EIA530A1
• RS232/V.28/V.24
• RS449/RS422/V.111
• RS449/RS423/V.101
• V.352
• V.361
• X.21 leased lines
1Not available on DECbrouter 90T2.
2Not available on DECbrouter 90T2A.
1–12 Overview