Black Box LR5000A User manual

CUSTOMER
SUPPORT
INFORMATION
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FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
DECEMBER 1993
LR5000A
RISC Router Expandable
POWER
RISC Router/2B
FAULT WA N LAN 1 LAN 2
RISC ROUTER EXPANDABLE
PORT
ACTIVITY
8
7
6
5
4
3
2
1
FAULT PWR ON

1
FCC AND IC RFI STATEMENT
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used properly, that is, in strict accordance with the manufacturer’s
instructions, may cause interference to radio communication. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct
the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.
TRADEMARKS USED IN THIS MANUAL
IPX™ is a trademark, and NetWare®is a registered trademark of
Novell, Incorporated.
VT100™ is a trademark of Eigital Equipment Corporation.
Telnet™ is a trademark of Telnet Communications, Inc.
AMD®is a registered trademark of Advanced Micro Devices Incorporated.
All applied for and registered trademarks are the property of their respective
owners.
Any trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

2
RISC ROUTER EXPANDABLE
Contents
1.0 SPECIFICATIONS ......................................................................................3
2.0 INTRODUCTION.......................................................................................4
2.1 General Description........................................................................4
2.2 Front-Panel Components ...............................................................6
2.3 Back-Panel Components.................................................................7
2.4 RISC Bridge/E Expansion Card ..................................................10
3.0 INSTALLATION.......................................................................................12
3.1 Unpacking Instructions ................................................................12
3.2 Mounting Instructions..................................................................13
3.2.1 Mounting in a Rack .........................................................13
3.2.2 Table Mounting ...............................................................14
3.3 Network Cables .............................................................................14
3.3.1 DTE (AUI) Interface .......................................................14
3.3.2 Thin Net (BNC) Interface ..............................................15
3.3.3 RS-232 Interface...............................................................16
3.3.4 RS-449 Interface...............................................................16
3.4 Network Installation .....................................................................17
3.4.1 Connecting an RS-232 Terminal to
the Control Port...............................................................17
3.4.2 DTE (AUI) Connection ..................................................18
3.4.3 BNC Connection .............................................................18
3.4.4 MAU Connection ............................................................19
3.4.5 Wide-Area Network Connection.....................................20
3.5 AC Connection..............................................................................23
4.0 UPGRADES ..........................................................................................24
4.1 PROM Card Installation ...............................................................24
4.2 Expansion Card Installation.........................................................26
5.0 TROUBLESHOOTING............................................................................29
5.1 Troubleshooting Steps..................................................................29

3
CHAPTER 1: Specifications
1.0 Specifications
Processor — AMD 29000
Clocking Rate — 20 MHz
Line Rate — 10 Mbps
Data Rate — 20 Megabytes per second
Buffer Memory — 1/2 to 2 MB
Ethernet
LAN Interface — 1-8 IEEE 802.3; Ports configured as:
DTE (AUI): Female DB15;
Thin Ethernet: BNC barrel connector;
MAU: Male DB15
WAN Interface — (2) RS-449 Serial ports configured as EIA-530,
V.35, or RS-232
Control Port
Interface — RS-232 (local/modem connection)
Max. Filtering
Rate — 90,000 packets per second (64-byte packets)
Max. Forwarding
Rate — 56,000 packets per second (64-byte packets)
Power — 90 to 132 or 175 to 264 VAC (47 to 440 Hz)
Size — 5.3"H x 17.5"W x 14"D (13.5 x 44.5 x 35.6 cm)
Weight — 23 lb. (10.4 kg)

4
RISC ROUTER EXPANDABLE
2.0 Introduction
This chapter describes the RISC Router Expandable inter-networking
platform, and contains information on the following:
• Major components
• Connectors (with pin assignments)
• Cables (with pin assignments)
• Hardware specifications
2.1 General Description
The RISC Router Expandable is a state-of-the-art RISC-based intelligent
bridge/router, employing the AMD®29000 microprocessor. The RISC Router
Expandable is a transparent network inter-connection device operating on
the MAC layer, level 2, of the OSI model. The RISC Router Expandable
currently routes TCP, IP, IPX™, and XNS protocols and bridges all others.
With eight Ethernet expansion slots, the RISC Router Expandable supplies
a variety of mixed-media hardware interfaces. The RISC Bridge/E Expansion
Card (LB521C) supports three interfaces:
• A Media-Access Unit (MAU) interface — a standard 15-pin male
connector. You can connect a workstation directly to this interface.
• A ThinNet (BNC) interface — a standard Thin Ethernet connection.
•A Data Terminal Equipment (DTE) interface — a standard 15-pin
female connector for a transceiver.
NOTE
IEEE 802.3 and Ethernet v.2 are identified as simply “Ethernet”
in this text.
The RISC Router Expandable delivers maximum bandwidth at 10 megabits per
second across eight individual LAN Ethernet ports. Peak filtering rates of up to
90,000 64-byte packets per second and forwarding at full Ethernet line speeds
of 56,000 64-byte packets per second are achieved under ideal conditions.
For wide area network connection, the RISC Router Expandable provides two
RS-449 serial links. The WAN interface supplies two high-speed transparent
serial channels operating at 384 Kbps. These channels provide a single logical
connection to a remote RISC Router Expandable while balancing the traffic
load over the two channels.

5
CHAPTER 2: Introduction
The RISC Router Expandable currently supports the following wide-area
network protocols:
• X.25
• Frame Relay
• Point-to-point
• HDLC raw
The RISC Router Expandable is equipped with 1 CPU board, 1 PROM card,
and up to eight expansion cards. A network control port is standard and
supports a user-interface via any VT100™ compatible terminal. Each Ethernet
card is equipped with an Ethernet terminator switch. The RISC Router
Expandable operates on 90-132/175-264 VAC, (47-440 Hz) and meets all
regulatory power-safety requirements.
The Network Control program is the user interface to the RISC Router
Expandable and provides the software tools for the internetworking platform.
Depending on the hardware and software configuration of the RISC Router
Expandable, Network Control provides the following:
• TCP/IP routing, IPX/NetWare®routing
• Protocol-transparent, high-speed bridging
• Multiple logical bridges
• Ethernet switching
• Telnet™, SNMP
• Spanning Tree
• Custom-address filtering
• Network statistics
• Password-protected security

6
RISC ROUTER EXPANDABLE
2.2 Front-Panel Components
This section describes the front panel of the RISC Router Expandable.
The numbers in Figure 2-1 correspond to the numbered descriptions below:
1. Port Activity LEDs — The Port Activity LEDs (green) indicate traffic on
the ports of the RISC Router Expandable. Each port has a corresponding
LED that lights when that port is active. The ports are shown from 1
through 8.
2. FAULT LED — The FAULT LED (amber) indicates a software problem.
The software triggers a hardware timer once a second. If it fails to do so,
the FAULT LED lights.
3. PWR OK LED — The PWR OK LED is green when the unit is ON.
Figure 2-1. Front Panel of the RISC Router Expandable.
PORT
ACTIVITY
FAULT PWR OK
1 2 3
RISC ROUTER EXPANDABLE

7
CHAPTER 2: Introduction
2.3 Back-Panel Components
This section describes the back panel components of the RISC Router
Expandable. The numbers in Figure 2-2 correspond to the numbered
descriptions below:
1. AC Power Port — The AC power port is a three-pronged grounded AC
input port for the RISC Router Expandable. The unit uses 110 or 220
VAC and automatically configures to the appropriate voltage.
2. ON/OFF Switch — The ON/OFF switch provides power to the RISC
Router Expandable. The “1” indicates ON. The “0” indicates OFF.
3. Reset Switch — The switch is reserved for future use.
4. FAULT LED — The FAULT LED (amber) indicates a software problem.
The software triggers a hardware timer once a second. If it fails to do so,
the FAULT LED lights. This LED is the same as the FAULT LED on the
front of the RISC Router Expandable.
5. Wide Area Network (WAN) Port(s) — The two WAN ports provide
remote transparent bridging. Each WAN port has a male DB37
connector. You can jumper the signaling on the two ports to meet either
RS-423/RS-232, RS-422, or V.35. The signal definitions for the EIA-530
specification follow the RS-422 specification. The V.35-compatible
interface is typically an M-block connector. The pin assignments for
these connectors are in Table 2-1.
6. RS-232 Serial Port — The RS-232 serial port is a DB25 connector used
to provide access to the Network Control program via VT100 compatible
terminal. The pin assignments used in the RISC Router Expandable
RS-232 port are listed in Table 2-2.
Figure 2-2. Back Panel of the RISC Router Expandable.
1 2 3 4
56

8
RISC ROUTER EXPANDABLE
Table 2-1. Pin Assignments for the Wide Area Network Port.
RS-449 EIA-530 RS-232 V.35 Circuit
1 1 1 A Shield
2 — 12 — Signaling Rate
3 — — — Spare
4 2 2 P Send Data (D)
5 15 15 Y Send Timing (A)
6 3 3 R Receive Data (A)
7 4 4 C Request To Send
8 17 17 V Receive Timing (A)
9 5 5 D Clear To Send (A)
10 18 — — Local Loopback
11 6 6 E Data Set Ready (A)
12 20 20 E Terminal Ready (A)
13 8 8 F Receiver Ready (A)
14 21 — — Remote Loopback
15 — 22 — Incoming Call
16 — 23 — Select Frequency
17 24 24 U Terminal Timing (A)
18 25 — — Test Mode
19 7 7 B Signal Ground
20 — 7 B Receive Ground
21 — — — Spare
22 14 — S Send Data (B)
23 12 — AA Send Timing (B)
24 16 — T Receive Data (B)
25 19 — — Request To Send (B)
26 9 — X Receive Timing (B)
27 13 — — Clear To Send (B)
28 — 25 — Terminal Service
29 22 — — Data Set Ready
30 23 — — Terminal Ready (B)
31 10 — — Receiver Ready (B)
32 — — — Select Standby
33 — 21 — Signal Quality
34 — 18 — New Signal
35 11 — W Terminal Timing (B)
36 — — — Standby Indicator
37 — 7 B Send Common

9
CHAPTER 2: Introduction
Table 2-2. Pin Assignments for the RS-232 Port.
Contact Circuit Use
1 Shield
2 BA Transmitted Data
3 BB Received Data
4 CA Request To Send
5 CB Clear To Send
6 CC DCE Ready
7 AB Signal Ground
8 CF Received Line Signal Detector
9 Reserved For Testing
10 Reserved For Testing
12 Not Used
13 Not Used
14 Not Used
15 DB Transmitted Signal Element Timing (DCE Source)
16 Not Used
17 DD Received Signal Element Timing (DCE Source)
18 Not Used
19 Not Used
20 CD DTE Ready
21 Not Used
22 CE Ring Indicator
23 Not Used
24 Transmitted Signal Element Timing (DTE Source)
25 Not Used

10
RISC ROUTER EXPANDABLE
2.4 RISC Bridge/E Expansion Card
The RISC Bridge/E Expansion Card (LB521C) has three interface ports:
A Media Attachment Unit (MAU) interface, a Data Terminal Equipment
(DTE) interface and a Thin Net (BNC) interface. The interface you choose
is automatically configured when you connect a cable to it. Only one interface
per card is configurable at a time. The RISC Router Expandable has eight
total expansion slots that can be configured in any combination. A
description of each interface follows below.
1. Data Terminal Equipment (DTE) Interface — The DTE interface is a
15-pin female Thick Ethernet connector with a standard locking slide
clip. This connector is an Attachment Unit Interface (AUI) interface
that meets the 10BASE5 specification. The pin assignments for this
connector are the same as those on the MAU port and are listed in
the Table 2-3.
2. BNC (Thin Net) Interface — The BNC connector is an IEEE 802.3
Ethernet specification connector used for Thin Ethernet LAN
connection. This connector has built-in transceiver circuitry and
provides a direct connection to a ThinNet network.
3. Terminator Switch — This switch terminates the Ethernet connection.
In the ON position, the BNC connection is terminated. The switch is
ON when it points towards the word “TERM” on the back panel.
When the switch is OFF, the connection is not terminated. The switch
is OFF when it points away from the word “TERM” on the back panel.
NOTE
If you are using a BNC “T” adapter and two sections of coaxial cable
to terminate your Ethernet connection, the “TERM” switch must be OFF.
4. Media Attachment Unit (MAU) Connector — This is a 15-pin male
Ethernet transceiver connector. This connector has built-in transceiver
circuitry and provides a direct-connect (DCE) to a workstation DTE port.
The pin assignments for this connector are the same as those on the DTE
port and are listed in Table 2-2.

11
CHAPTER 2: Introduction
Figure 2-3. RISC Bridge/E Expansion Card Components.
Table 2-3. Port Pin Assignments for the DTE/MAU.
Contact Circuit Use DTE MAU
3 DO-A Data Out Circuit A Out In
10 DO-B Data Out Circuit B Out In
11 DO-S Data Out Circuit Shield Out In
5 DI-A Data In Circuit A In Out
12 DI-B Data In Circuit B In Out
4 DI-S Data In Circuit Shield In Out
8 CO-S Control Out Circuit Shield
2 CI-A Control In Circuit A In Out
9 CI-B Control In Circuit B In Out
1 CI-S Control In Circuit Shield In Out
6 VC Voltage Common Out In
13 VP Voltage Plus Out In
14 VS Voltage Shield Out In
Shell PG Protective Ground
(Conductive shell)
1
2
3
4

12
RISC ROUTER EXPANDABLE
3.0 Installation
This chapter describes the installation of the RISC Router Expandable.
Information included in this chapter is listed below:
• Unpacking Instructions
• Mounting Instructions
• Network Cabling
• Network Installation
NOTE
Cables and transceivers are not provided with the RISC Router
Expandable.
3.1 Unpacking Instructions
Your RISC Router Expandable Package includes the following:
• RISC Router Expandable
• AC Power Cord
• Manual
Follow these steps to unpack the RISC Router Expandable:
1. Remove the foam insert from the RISC Router Expandable carton.
Set it aside and save it.
2. Remove the RISC Router Expandable and place it on a clean, flat surface.
3. Read the remainder of this installation chapter before you power up the
unit.

13
CHAPTER 3: Installation
3.2 Mounting Instructions
3.2.1 M OUNTING IN A R ACK
You will need an 1⁄4-inch nut driver to install the RISC Router Expandable
in a rack. Follow these steps:
1. Remove the bezel (front panel) from the front of the RISC Router
Expandable. The bezel is held by four threaded ball studs. Pry the bezel
off with your hands and set it aside.
2. Remove the four threaded ball studs from the front panel using the nut
driver. Turn the nut driver counterclockwise.
3. Rotate the mounting bracket from the front panel so that the cut-outs
are facing the outside of the RISC Router Expandable.
4. Re-install the four threaded ball studs and tighten them.
5. Re-install the front bezel by pressing it onto the ball studs.
6. The RISC Router Expandable is ready to be mounted in a standard
19-inch rack.
NOTE
The RISC Router Expandable is compatible with any standard 19-inch
component rack. However, the rack-mount brackets are not sufficient to
support the unit. You must have support rails or a shelf installed in your
rack to fully support the RISC Router Expandable.
Figure 3-1. Preparing the RISC Router Expandable
for Rack Mounting.

14
RISC ROUTER EXPANDABLE
3.2.2 T ABLE M OUNTING
Follow these steps to table-mount your RISC Router Expandable:
1. Set your RISC Router Expandable on a safe, clean, static-free surface.
2. Make sure that the vents and fans are not blocked. Do not place
anything on top of the RISC Router Expandable.
3. Be sure a grounded (three-prong) plug is available. Do not use an
extension cord.
3.3. Network Cables
This section describes the network cables that connect to the RISC Router
Expandable interfaces.
3.3.1 DTE (AUI) I NTERFACE
The male connector and cable shown in Figure 3-2 connects to the female
DTE interface of the RISC Router Expandable. This connector is identified
by the two round posts that secure the connector. The cable must conform
to the IEEE 802.3 specification, and the AUI electrical and hardware
specification. See Table 2-3 for the pin assignments.
Figure 3-2. DTE Interface Cable (Male).

15
CHAPTER 3: Installation
The female connector and cable, shown in Figure 3-3, connects to the male
MAU interface of the RISC Router Expandable. This cable is identified by
the locking slide clip. This connector must conform to the IEEE 802.3
specification, and the AUI electrical and hardware specification.
See Table 2-3 for the pin assignments.
3.3.2 T HIN N ET (BNC) I NTERFACE
The ThinNet connector and cable shown in Figure 3-4 connects to the
ThinNet interface on the RISC Router Expandable. The connector is the
male end and is identified by the rotating lock mechanism. The connector
and cable must conform to the IEEE 802.3 10BASE-2 specification.
Figure 3-3. MAU Interface Cable (Female).
Figure 3-4. ThinNet (BNC) Interface Cable (Male).

16
RISC ROUTER EXPANDABLE
3.3.3 RS-232 I NTERFACE
The female RS-232 connector and cable, shown in Figure 3-5, connects to the
male RS-232 connector on the RISC Router Expandable. The connector must
conform to the RS-232 EIA specification. See Table 2-2 for pin assignments.
3.3.4 RS-449 I NTERFACE
The Wide Area Network port on the RISC Router Expandable is configured
to support RS-449 communications. The RS-449 WAN connector and cable,
shown in Figure 3-6, connects to the RS-449 WAN connector on the RISC
Router Expandable. This connector has a spring clip on each side that must
be pinched for the two connectors to attach. This port can be configured to
support RS-232, EIA-530, and V.35 communications. See Table 2-1 for the pin
assignments.
Figure 3-5. RS-232 Connector and Cable (Female).
Figure 3-6. RS-449 (WAN) Connector and Cable.

17
CHAPTER 3: Installation
3.4 Network Installation
Determine the configuration of your network and the type of interfaces your
users require. The installation procedures are based on the type of interface.
Refer to the appropriate section for the type of interface ou are using. The
RISC Router Expandable automatically configures to the type of interface.
CAUTION
Be sure to remove the power cord from the back of the RISC Router
Expandable before you install any cables.
3.4.1 C ONNECTING AN RS-232 T ERMINAL TO THE C ONTROL PORT
To view the network management software of the RISC Router Expandable,
you must attach a VT100 compatible ASCII terminal to the RS-232 port.
The software provides the user interface to all the configurable parameters
of the RISC Router Expandable. Set your terminal to match the following
RS-232 interface defaults: 9600 baud, one stop bit, no parity.
1. Locate theRS-232 interface on the lower-left-hand corner of the
RISC Router Expandable. The connector is a 25-pin male connector
(Figure 3-7).
2. Attach a 25-pin female RS-232 connector to the male interface
on the back panel of the RISC Router Expandable.
3. Secure the locking screws.
Figure 3-7. RS-232 Connection.
RS-232 Interface
DTE (AUI) Interface

18
RISC ROUTER EXPANDABLE
3.4.2 DTE (AUI) C ONNECTION
The DTE (AUI) interface is the top connector of a the RISC Bridge/E
Expansion Card (see Figure 3-7). This interface is a 10BASE5 Thick Ethernet
Attachment Unit Interface (AUI).
Follow these steps to make the DTE connection:
1. Attach a male DTE connector to the female DTE interface on the RISC
Router Expandable.
2. Slide the locking clip on the RISC Router Expandable interface.
3.4.3 BNC C ONNECTION
The BNC interface is the center connector of a single-port RISC Bridge/E
Expansion Card (see Figure 3-8). This interface is a 10BASE2 Thin Ethernet
connector. The BNC interface has a built-in terminator. The terminator
switch terminates the BNC segment.
1. Attach a male BNC connector to the female BNC interface on the RISC
Router Expandable.
2. Twist the locking barrel on the male connector clockwise to secure
the connection to the interface.
3. Locate the terminator on the RISC Bridge/E Expansion Card.
It is located directly below the BNC interface.
4. Set the terminator according to your network:
ON if the BNC segment ends with your RISC Router Expandable. The
switch must point towards the word “Term” on the RISC Bridge/E
Expansion Card mounting bracket.
OFF if the BNC segment does not end with your RISC Router Expandable.
The switch must point away from the word “Term” on the RISC Bridge/E
Expansion Card mounting bracket.