Cabletron Systems BRIM-WT1 User manual

BRIM-WT1
USER’S GUIDE
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505
The Complete Networking Solution™

NOTICE
0

NOTICE
i
NOTICE
Cabletron Systems reserves the right to make changes in specifications and other
information contained in this document without prior notice. The reader should in all cases
consult Cabletron Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without
notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY
INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES
WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING
OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED
IN IT, EVEN IF CABLETRON SYSTEMS HAS BEENADVISED OF, KNOWN, OR
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.
© Copyright February 1994 by:
Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03867-0505
All Rights Reserved
Printed in the United States of America
Part Number: 9031024 February 1994
LANVIEW is a registered trademark of Cabletron Systems, Inc.
MicroMMAC and BRIM are trademarks of Cabletron Systems, Inc.
Windows is a registered trademark of Microsoft Corp.
Ethenet is a trademark of Xerox Corp.
CompuServe is a registered trademark of CompuServe
Printed On Recycled Paper

NOTICE
ii
FCC NOTICE
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply with the limits for a ClassA
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 uses, generates, and can radiate radio frequency
energy and if not installed in accordance with the operator’s manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference in which case the user will be required to correct the
interference at his own expense.
WARNING: Changes or modifications made to this device which are not expressly
approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
DOC NOTICE
This digital apparatus does not exceed the ClassA limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la class A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.

NOTICE
iii
CABLETRON SYSTEMS, INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT : Before utilizing this product, carefully read this License Agreement.
This document is an agreement between you, the end user, and Cabletron Systems, Inc.
(“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron
software program (the “Program”) contained in this package. The Program may be
contained in firmware, chips or other media. BY UTILIZING THE ENCLOSED
PRODUCT,YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS
AGREEMENT, WHICH INCLUDES THE LICENSEAND THE LIMITATION OF
WARRANTY AND DISCLAIMER OF LIABILITY. IFYOU DO NOT AGREE TO THE
TERMS OF THISAGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT
TO THE PLACE OF PURCHASE FOR A FULL REFUND.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE. You have the right to use only the one (1) copy of the Program provided
in this package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce or transmit any part of the Program except as permitted by
the Copyright Act of the United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or
disassemble the Program.
3. APPLICABLE LAW. This License Agreement shall be interpreted and governed
under the laws and in the state and federal courts of New Hampshire.You accept the
personal jurisdiction and venue of the New Hampshire courts.

NOTICE
iv
EXCLUSION OF WARRANTY AND DISCLAIMER OF
LIABILITY
1. EXCLUSION OF WARRANTY. Except as may be specifically provided by
Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning the
Program (including Its documentation and media).
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED
TOYOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH
RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS,
AND ANY ACCOMPANYING HARDWARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF
BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE
DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO
USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR
CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR
LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE ABOVE
LIMITATIONSAND EXCLUSIONS MAY NOT APPLY TOYOU.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at private expense; (b) contains “restricted
computer software” submitted with restricted rights in accordance with Section 52227-19
(a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its
successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its
suppliers.
For Department of Defense units, the product is licensed with “Restricted Rights” as
defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-
7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical
Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35
Industrial Way. Rochester, New Hampshire 03867

BRIM-WT1 USER’S GUIDE v
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 USING THIS MANUAL................................................................... 1
1.2 GETTING HELP............................................................................. 2
1.3 BRIM-WT1 OVERVIEW ................................................................. 2
1.4 BRIM-WT1 FEATURES.................................................................. 2
1.5 BRIM-WT1 SPECIFICATIONS....................................................... 3
1.6 RELATED MANUALS..................................................................... 4
CHAPTER 2 INSTALLATION
2.1 UNPACKING THE BRIM-WT1....................................................... 5
2.2 INSTALLING THE BRIM-WT1........................................................ 6
CHAPTER 3 LOCAL MANAGEMENT
3.1 The WAN PHYSICAL CONFIGURATION SCREEN...................... 9
3.2 THE WAN INTERFACE CONFIGURATION SCREEN ................ 15
CHAPTER 4 USING THE LANVIEW LEDS
4.1 BRIM-WT1 LEDS ......................................................................... 21
4.2 T1/FT1 PORT LEDS..................................................................... 22
4.3 SYNC PORT LEDS...................................................................... 23

CONTENTS
vi BRIM-WT1 USER’S GUIDE

BRIM-WT1 USER’S GUIDE Page 1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems BRIM-WT1 User’s Guide . This
manual explains features, installation instructions, and Local
Management for the Cabletron Systems Wide Area Network (WAN)
Bridge Router Interface Module (BRIM).
1.1 USING THIS MANUAL
Read through this manual completely to familiarize yourself with its
content and to gain an understanding of the features and capabilities of
the BRIM-WT1. A general working knowledge of WAN, Ethernet, and
IEEE 802.3 type data communications networks and their physical layer
components is helpful when using the BRIM-WT1.
Chapter 1,
Introduction , outlines the contents of this manual, describes
BRIM-WT1 features, lists specifications, and concludes with a list of
related manuals.
Chapter 2,
Installation , describes how to install the BRIM-WT1 into the
MicroMMAC.
Chapter 3,
Local Management , describes how to use the BRIM-WT1
Local Management screens.
Chapter 4,
LANVIEW LEDS , describes how to use the BRIM-WT1
LEDs to monitor BRIM performance and status.

CHAPTER 1:
INTRODUCTION
Page 2 BRIM-WT1 USER’S GUIDE
1.2 GETTING HELP
If you need additional support related to the BRIM-WT1, or if you have
any questions, comments, or suggestions concerning this manual, contact
Cabletron Systems Technical Support:
By phone ..........................[phone]
Monday-Friday; 8am - 8pm EST
By CompuServe
®
.............GO CTRON from any! prompt
By Internet mail ...............[email protected]
1.3 BRIM-WT1 OVERVIEW
The BRIM-WT1 is an optional feature for the MicroMMAC. It allows
remote connectivity of the MicroMMAC using WAN services such as T1,
Fractional T1, and Digital Data System (DDS). The BRIM-WT1 extends
the functionality of the MicroMMAC to include remote bridging and
routing capability. With the BRIM-WT1, the MicroMMAC is a remote
office workgroup hub providing up to 130 LAN ports of connectivity.
1.4 BRIM-WT1 FEATURES
WAN Connectivity
The BRIM-WT1 is equipped with a Synchronous (SYNC) serial port and
a T1/Fractional-T1 (T1/FT1) port.
The SYNC port provides a synchronous serial connection to external
WAN equipment (e.g., a T1 multiplexer or DDS). This port supports the
following interfaces:
• RS232 (9.6 Kbps - 19.2 Kbps)
• RS422/RS449 (9.6 Kbps - 2.048 Mbps)
• RS530 (9.6 Kbps - 2.048 Mbps)
• X.21 (9.6 Kbps - 2.048 Mbps)
• V.35 (9.6 Kbps - 2.048 Mbps)

BRIM-WT1 SPECIFICATIONS
BRIM-WT1 USER’S GUIDE Page 3
The T1/FT1 port provides a DSX-1 interface that includes a built in
Channel Service Unit/Digital Service Unit (CSU/DSU) for direct
connection to a T1 line. This port supports both Full T1 or Fractional T1
using 56 or 64 Kbps timeslots.
WAN Protocols
The BRIM-WT1 supports the following WAN protocols:
• Point to Point Protocol (LCP and BNCP), as defined by RFC1331
• Frame Relay (LMI), as defined by RFC1294
MIB Support
For additional information on how to extract and compile individual
MIBs, contact Cabletron Systems Technical Support (see
Getting Help ).
The MicroMMAC (with the BRIM-WT1 installed) supports the following
Wide Area Network IETF MIBs:
• RFC1406 (DS1 Connection Management)
• RFC1317 (RS232 Like Connection Management)
• RFC1471 draft (PPP Link)
• RFC1474 draft (PPP Bridge)
• RFC1315 (Frame Relay)
LANVIEW Diagnostic LEDs
Cabletron provides a visual diagnostic and monitoring system, called
LANVIEW, with the BRIM-WT1. LANVIEW LEDs help you quickly
identify Bridge and Link status.
1.5 BRIM-WT1 SPECIFICATIONS
The operating specifications for the BRIM-WT1 are described in this
section. Cabletron Systems reserves the right to change these
specifications at any time without notice.
Environmental Requirements
Operating Temperature: -5 ° to +40 ° C
Non-operating Temperature: -30
° to +90 ° C
Operating Humidity: 5 to 95% (non-condensing)

CHAPTER 1:
INTRODUCTION
Page 4 BRIM-WT1 USER’S GUIDE
Safety and Approvals
This unit meets the safety requirements of UL 1950, CSA C22.2 NO 950,
and EN 60950; the EMI requirements of FCC Class A and EN 55022
Class A; and the EMC requirements of EN 50082-1. The T1 port also
meets FCC Part 68.
1.6 RELATED MANUALS
Use the following manuals to supplement the procedures, and other
technical data provided in this manual.This manual references procedures
in these manuals, where appropriate, but does not repeat them.
Cabletron Systems’
MicroMMAC User’s Guide

BRIM-WT1 USER’S GUIDE Page 5
CHAPTER 2
INSTALLATION
This chapter describes how to install the BRIM-WT1 to the
MicroMMAC. To install the BRIM-WT1, you need to remove
MicroMMAC’s chassis cover. Refer to the MicroMMAC User’s Guide for
instructions to remove the chassis cover.You also need a Phillips-head
screwdriver to install the BRIM-WT1.
2.1 UNPACKING THE BRIM-WT1
Unpack the BRIM-WT1 as follows:
1. Remove the shipping material covering the BRIM-WT1 in the
shipping box.
2. Carefully remove the BRIM-WT1 from the shipping box.
3. Remove the BRIM-WT1 from the protective plastic bag and set it
aside to prevent damage.
4. Visually inspect the BRIM-WT1. If there are any signs of damage,
contact Cabletron Systems Technical Support immediately.

CHAPTER 2:
INSTALLATION
Page 6 BRIM-WT1 USER’S GUIDE
2.2 INSTALLING THE BRIM-WT1
Caution: The BRIM-WT1 and the boards associated with the
MicroMMAC are sensitive to static discharges. Be sure to use an
antistatic wrist strap and observe all static precautions during this
procedure. Failure to do so could result in damage to the BRIM-WT1 or
the MicroMMAC.
To Install the BRIM-WT1 into the MicroMMAC:
1. Remove the screws from the BRIM slot faceplate at the rear panel of
the MicroMMAC as shown in Figure 2-1.
2. Remove the screws from the two standoffs.
Figure 2-1. Removing the Faceplate and Standoff Screws
Faceplate
Standoff
MicroMMAC
Rear Panel

INSTALLING THE BRIM-WT1
BRIM-WT1 USER’S GUIDE Page 7
3. Position the BRIM-WT1 in the MicroMMAC as shown
in Figure 2-2. Ensure that the connector on the BRIM-WT1 sits flush
on the MicroMMAC connector.
Figure 2-2. Installing the BRIM-WT1
4. Secure the BRIM-WT1 to the standoffs and MicroMMAC rear panel
using the four screws included with the module.
5. Reattach the chassis cover to the MicroMMAC and reconnect the
MicroMMAC to your network.
LNK
TST
BRIM-WT
STB
YEL
SYN
RED
LNK
DSR
TST
CTS
SYNC
T1/FT1

CHAPTER 2:
INSTALLATION
Page 8 BRIM-WT1 USER’S GUIDE

BRIM-WT1 USER’S GUIDE Page 9
CHAPTER 3
LOCAL MANAGEMENT
This Chapter explains how to use the BRIM-WT1 local management
screens. The
WAN Physical Configuration screen and the WAN
Interface Configuration screen
appear as local management menu
selections after you successfully install the BRIM-WT1 into the
MicroMMAC. Refer to the MicroMMAC User’s Guide for instructions
on how to setup and access local management.
3.1 The WAN PHYSICAL CONFIGURATION SCREEN
To access the WAN Physical Configuration screen from the Feature
Selection screen, use the arrow keys to highlight the WAN Physical
Configuration option, then press the
Return key. The WAN Physical
Configuration screen shown in Figure 3-1 appears.
Figure 3-1. WAN Physical Configuration Screen
SAVE WAN INT CONFIG RETURN
-F6-
MicroMMAC/WT1 LOCAL MANAGEMENT
Cabletron MMW Revision xx.xx.xx
WAN PHYSICAL CONFIGURATION
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
01-08
09-16
17-24
T1 Timeslot Configuration
Active WAN Port: T1
Default WAN Port: T1
SYNC Port Type: V.35
Force CTS True: Yes
Force DSR True: No
T1 Timeslot View: Active
T1 Line Coding: B8ZS
T1 Frame Type: ESF
T1 Xmit Clk Src: LOCAL TIMING
T1 Line Buildout: 0 db

CHAPTER 3:
LOCAL MANAGEMENT
Page 10 BRIM-WT1 USER’S GUIDE
The following sections describe WAN Physical Configuration screen
fields and instructions for setting them.
Active WAN Port
Displays the active WAN port. In future MicroMMAC releases, this field
will be used for port redundancy.
Default WAN Port
Displays the default WAN port used for the WAN connection. The
selections are SYNC or T1.
Sync Port Type
Displays the Sync Port electrical interface type. The selections toggle
between V.35, RS422, RS232, and NONE. This field always displays a
Sync Port Type, even if the Sync Port is not the active WAN port. To use
X.21 or RS530 select RS422 and use the proper Interface Cable available
from Cabletron. See Table 1 for Cabletron Interface Cable part numbers.
The default setting for this field is V.35.
Force CTS True
Displays the source of the Clear To Send (CTS) signal.You can toggle the
selections betweenYES and NO. TheYES (On) setting indicates that the
CTS is internally “Forced True” (from the BRIM-WT1).
The NO (Off) setting indicates that the CTS signal is received from an
external DCE (Data Communications Equipment). The default setting is
NO.
Table 1: Cabletron Interface Cables
Interface Type Cabletron Part
Number
V.35 (CCITT V.35) 9372080
RS422 (EIA 449) 9372078
RS232 (EIA 232) 9372079
X.21 (CCITT X.21) Not Available
RS530 (EIA 530) 9372079

The WAN PHYSICAL CONFIGURATION SCREEN
BRIM-WT1 USER’S GUIDE Page 11
Force DSR True
Displays the source of the Data Set Ready (DSR) signal.You can toggle
the selections betweenYES and NO. TheYES (On) setting indicates that
the DSR is internally “Forced True” (from the BRIM-WT1). The
NO (Off) setting indicates that the CTS signal is received from an external
DCE. The default setting is NO.
T1 Timeslot View
Displays the status of the T1 Timeslot Configuration Table. The selections
for this field toggle between Active and New. The Active setting displays
current Timeslot Configuration Table settings. The New setting allows
you to change Timeslot Configuration Table settings. The default setting
for the Timeslot Configuration Table is all Timeslots not assigned.
T1 Line Coding
Displays the line coding for the Full T1 line. The selections toggle
between INV-HDLC, JBZS, B8ZS, and OTHER. The OTHER selection
lets you select line coding for individual Interfaces.The default setting for
this field is B8ZS.
T1 Frame Type
Displays the T1 Frame type. The selections toggle between ESF and D4.
The default setting for this field is ESF.
T1 Xmit Clk Src
Displays the T1 Transmit Clock Source. The selections for this field
toggle between Loop Timing (Extracted Line Clock) and Local Timing
(Internal Clock). The default setting for this field is Loop Timing.
T1 Line Buildout
Displays the value of the Line Buildout setting.You can toggle between
0 db, -7.5 db, and -15 db. This field allows you to increase the attenuation
of the T1 signal. The T1 service provider should indicate how this value
should be set. The default setting for this field is 0 db.

CHAPTER 3:
LOCAL MANAGEMENT
Page 12 BRIM-WT1 USER’S GUIDE
Setting WAN Physical Configuration Screen Fields
To set a WAN Physical Configuration screen field:
1. Use the arrow keys to highlight the WAN Physical Configuration
screen field you want to change.
2. Press the
Return key to toggle the selections.
3. Whenthe desired selectionappears,usethe arrowkeystohighlight the
SAVE command.
4. Press the
Return key or press F6. The message “Save Done!” appears
and the changes are saved to memory.
Setting the T1 Timeslot Configuration Table
The T1 Timeslot Configuration Table allows you to configure how your
MicroMMAC utilizes the T1 line. The configuration table consists of 24
Timeslots, which appear as 01-08, 09-16, and 17-24.You must assign
each Timeslot an
Interface number (03-26, or 00 if the Timeslot is not
used). When you lease an entire T1 line, you can use all 24 Timeslots (the
full T1 bandwidth). If you lease only a fraction of the T1, the Telco carrier
will tell you which Timeslots to use.
You can utilize Timeslots any way you choose. For example, if your
MicroMMAC has access to a full T1 (24 Timeslots), and you want to
communicate with two other MicroMMACs, your configuration could
look like figure 3-2.
Figure 3-2. Sample Timeslot Configuration
MicroMMAC#1
MicroMMAC#2
Telco Cloud
24 Timeslots
16 Timeslots
MicroMMAC#3
8 Timeslots