Cabletron Systems Network Router BRIM WT1 User Manual

BRIM-WT1  
USER’S GUIDE  
The Co m p le te Ne two rking So lutio n™  
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505  
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NOTICE  
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 BEEN ADVISED 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  
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NOTICE  
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 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 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 Class A 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.  
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NOTICE  
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 LICENSE AND THE LIMITATION OF  
WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE  
TERMS OF THIS AGREEMENT, 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.  
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NOTICE  
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  
TO YOU 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  
LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.  
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  
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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  
BRIM-WT1 USER’S GUIDE  
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CONTENTS  
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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.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 1: INTRODUCTION  
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 ..........................(603) 332-9400  
Monday-Friday; 8am - 8pm EST  
®
By CompuServe .............GO CTRON from any! prompt  
By Internet mail ...............s[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)  
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BRIM-WT1 SPECIFICATIONS  
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)  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 1: INTRODUCTION  
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  
Page 4  
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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.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 2: INSTALLATION  
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.  
Standoff  
Faceplate  
MicroMMAC  
Rear Panel  
Figure 2-1. Removing the Faceplate and Standoff Screws  
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INSTALLING THE BRIM-WT1  
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.  
BRIM-WT  
SYNC  
LNK  
DSR  
STB  
YEL  
TST  
LNK  
T1/FT1  
CTS  
SYN  
RED  
TST  
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.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 2: INSTALLATION  
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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.  
MicroMMAC/WT1 LOCAL MANAGEMENT  
Cabletron MMW Revision xx.xx.xx  
WAN PHYSICAL CONFIGURATION  
Active WAN Port: T1  
Default WAN Port: T1  
T1 Timeslot View:  
T1 Line Coding:  
T1 Frame Type:  
T1 Xmit Clk Src:  
T1 Line Buildout:  
Active  
B8ZS  
ESF  
LOCAL TIMING  
0 db  
SYNC Port Type: V.35  
Force CTS True: Yes  
Force DSR True: No  
T1 Timeslot Configuration  
01-08  
09-16  
00 00 00  
00 00 00  
00 00  
00 00  
00 00 00  
00 00 00  
00 00 00  
00 00 00  
17-24  
00 00  
SAVE  
-F6-  
WAN INT CONFIG  
RETURN  
Figure 3-1. WAN Physical Configuration Screen  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 3: LOCAL MANAGEMENT  
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.  
Table 1: Cabletron Interface Cables  
Interface Type  
Cabletron Part  
Number  
V.35 (CCITT V.35)  
RS422 (EIA 449)  
RS232 (EIA 232)  
X.21 (CCITT X.21)  
RS530 (EIA 530)  
9372080  
9372078  
9372079  
Not Available  
9372079  
Force CTS True  
Displays the source of the Clear To Send (CTS) signal.You can toggle the  
selections between YES and NO. The YES (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.  
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The WAN PHYSICAL CONFIGURATION SCREEN  
Force DSR True  
Displays the source of the Data Set Ready (DSR) signal. You can toggle  
the selections between YES and NO. The YES (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.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 3: LOCAL MANAGEMENT  
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. When the desired selection appears, use the arrow keys to highlight 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.  
MicroMMAC#2  
16 Timeslots  
MicroMMAC#1  
Telco Cloud  
24 Timeslots  
MicroMMAC#3  
8 Timeslots  
Figure 3-2. Sample Timeslot Configuration  
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The WAN PHYSICAL CONFIGURATION SCREEN  
Figure 3-3 shows a sample configuration for three MicroMMACs. Of the  
24 Timeslots, MicroMMAC#1 uses 16 to communicate with  
MicroMMAC#2 and the remaining 8 to communicate with  
MicroMMAC#3. This configuration can vary tremendously, depending on  
how the Telco carrier maps out the T1 Timeslots. Your Telco carrier will  
tell you which Timeslots are active.  
01-08  
03 03 03  
00 00 00  
03 03 03  
00 00 00  
03 03  
00 00  
09 -16  
17 -24  
00 00 00  
00 00  
00 00 00  
01-08  
04 04 04  
04 04 04  
04 04 04  
04 04 04  
04 04  
04 04  
MicroMMAC#3  
09 -16  
01-08  
04 04 04  
04 04 04  
04 04  
04 04  
17 -24  
05 05 05  
05 05  
05 05 05  
04 04 04  
00 00 00  
04 04 04  
00 00 00  
09 -16  
MicroMMAC#1  
17 -24  
00 00  
MicroMMAC#2  
Figure 3-3. Sample Configuration  
MicroMMAC#1 is using the full T1, so all the Timeslots must have an  
Interface assignment. MicroMMAC#2 and MicroMMAC#3 only use a  
fraction of the T1, but the quantity of Timeslots must match those of  
MicroMMAC#1. Unused Timeslots receive an Interface number of 00.  
Note: The Interface numbers of MicroMMAC#1 and MicroMMAC#3 do  
not have to match. Only the quantity of Timeslots must match (the Telco  
carrier will assign the timeslots).  
To set the Timeslot Configuration Table:  
1. Use the arrow keys to highlight the Active setting in the T1 Timeslot  
View field  
2. Press the Return key.  
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CHAPTER 3: LOCAL MANAGEMENT  
3. The T1 Timeslot View field displays New and the cursor  
automatically moves into the Timeslot Configuration table.  
4. Use the arrow keys to move to the desired Timeslots in the Timeslot  
Configuration table.  
5. Type the desired Interface Number (03 to 26; or zero (00) for unused  
Timeslots).  
Note: The MicroMMAC automatically assigns Interface 01 for Ethernet,  
and Interface 02 for the SYNC port.  
6. Press the Return key.  
7. Repeat steps 4 -6 to complete the configuration.  
8. Use the arrow keys to highlight the SAVE command.  
9. Press the Return key or press F6. The message “Save Done!” appears  
and the changes are saved to memory.  
10. Use the arrow keys to highlight the T1 Timeslot View field.  
11. Press the Return key until the Active selection appears. Verify that the  
desired changes have taken effect. The T1 configuration is complete.  
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THE WAN INTERFACE CONFIGURATION SCREEN  
3.2 THE WAN INTERFACE CONFIGURATION SCREEN  
This section describes the features of the WAN Interface Configuration  
screen. To access the WAN Interface Configuration screen from the  
Features Selection screen, use the arrow keys to highlight the WAN Int.  
Config. option, then press the Return key. The WAN Interface  
Configuration screen shown in Figure 3-4 appears.  
MicroMMAC/WT1 LOCAL MANAGEMENT  
Cabletron MMW Revision xx.xx.xx  
WAN INTERFACE CONFIGURATION  
PT# IF# DLCI STATE PT# IF# DLCI STATE  
Interface Number:  
Data Compression:  
Max Xmit Unit:  
Line Coding:  
03  
No  
1518  
Not Used  
PPP  
Active Protocol:  
SAVE  
-F6-  
WAN INT CONFIG  
RETURN  
Figure 3-4. WAN Interface Configuration Screen  
The following sections describe WAN Interface Configuration screen  
fields and instructions for setting them.  
Interface Number  
Displays Interface Numbers 02-26. Use this field to configure the  
Interface Numbers you assigned to the Timeslots at the WAN Physical  
Configuration screen. This field only displays the active SYNC and T1  
interfaces.  
Data Compression  
Displays the status of Data Compression. Select Yes to activate Data  
Compression or No to de-activate. Data Compression is not supported at  
this time.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 3: LOCAL MANAGEMENT  
Max Xmit Unit  
Displays the maximum packet size that can be transmitted on the selected  
Interface. The default setting for this field is 1518. This is the maximum  
packet size.  
Line Coding  
Displays the T1 Line Coding. This field displays INV-HDLC, JBZS,  
B8ZS, or NOT USED. The default setting for this field is NOT USED.  
Active Protocol  
Displays the active Link Layer protocol. This field displays PPP (Point to  
Point), FR (Frame Relay), or None.  
PT#  
Displays the Bridge Port that the BRIM-WT1 Local Management  
automatically assigns to an Interface. If the active protocol for this  
interface is PPP, Local Management assigns only one WAN bridge port. If  
the active protocol is Frame Relay, Local Management may assign up to  
31 WAN bridge ports.  
Note: The MicroMMAC has 32 available bridge ports. Ethernet is the  
first bridge port. The remaining 31 bridge ports are available for WAN  
applications.  
You can assign the 31 WAN bridge ports to the 24 interfaces in the  
configuration that suits your needs. For example, you can assign all 31  
WAN bridge ports to one interface. In this example, the remaining 23  
interfaces would not have WAN bridge ports available.  
The quantity of bridge ports for a Frame Relay network is determined by  
the quantity of DLCIs (Data Link Connection Identifiers) assigned to that  
Interface. This is determined either manually or by the LMI (Local  
Management Interface).  
IF#  
Displays the Interface that is associated with the bridge port.  
DLCI  
Displays the Data Link Carrier Identifier. This field is specific to the  
Frame Relay protocol. If the active protocol for this interface is PPP, then  
PPP will appear in this field.  
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THE WAN INTERFACE CONFIGURATION SCREEN  
STATE  
Displays the status of the bridge port. This field is specific to the Frame  
Relay protocol. If the active protocol is Frame Relay, this field displays  
the status as ACTIVE or INACTIVE. If the active protocol is PPP, this  
field appears empty.  
Configuring Interfaces  
The BRIM-WT1 Local Management Automatically assigns bridge ports  
to interfaces. There are 31 Bridge Ports available.  
To configure an Interface Number:  
1. Use the arrow keys to highlight the Interface Number field.  
2. Press the Return key to select the Interface Number (02-26) you want  
to configure.  
3. Use the arrow keys to highlight the Active Protocol field.  
4. Press the Return key to select PPP, FR, or NONE.  
-
-
Select PPP or FR to assign a Bridge Port  
Select NONE to remove a previously assigned Bridge Port  
5. Use the arrow keys to highlight the SAVE command.  
6. Press the Return key or press F6. The message “Save Done!” appears.  
The BRIM-WT1 Local Management automatically assigns an Active  
Port Number to the Interface number and the changes are saved to  
memory.  
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CHAPTER 3: LOCAL MANAGEMENT  
Setting the Data Compression Field  
To set the Data Compression field:  
1. Use the arrow keys to highlight the Data Compression field.  
2. Press the Return key to toggle between Yes and NO. Select the  
desired setting.  
3. Use the arrow keys to highlight the SAVE command.  
4. Press the Return key or press F6. The message “Save Done!” appears.  
The BRIM-WT1 Local Management automatically assigns an Active  
Port Number to the Interface number and the changes are saved to  
memory.  
Setting the Max Xmit Unit Field  
To set the Max Xmit Unit field:  
1. Use the arrow keys to highlight the Max Xmit Unit field.  
2. Enter the desired setting.  
3. Use the arrow keys to highlight the SAVE command.  
4. Press the Return key or press F6. The message “Save Done!” appears.  
The BRIM-WT1 Local Management automatically assigns an Active  
Port Number to the Interface number and the changes are saved to  
memory.  
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THE WAN INTERFACE CONFIGURATION SCREEN  
Setting the Line Coding Field  
Before setting the Line Coding field, you must first set the T1 Line  
Coding field in the WAN Physical Configuration screen to OTHER.  
To set the Line Coding field:  
1. Use the arrow keys to highlight the Line Coding field.  
2. Enter the desired setting.  
3. Use the arrow keys to highlight the SAVE command.  
4. Press the Return key or press F6. The message “Save Done!” appears.  
The BRIM-WT1 Local Management automatically assigns an Active  
Port Number to the Interface number and the changes are saved to  
memory.  
BRIM-WT1 USER’S GUIDE  
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CHAPTER 3: LOCAL MANAGEMENT  
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CHAPTER 4  
USING THE LANVIEW LEDS  
This chapter describes how to use the LANVIEW LEDs to monitor BRIM  
status and diagnose BRIM problems.  
BRIM-WT  
SYNC  
T1/FT1  
LOS YEL STB DSR LNK  
TST RED SYN CTS TST  
Figure 4-1.  
4.1 BRIM-WT1 LEDS  
The following LEDs indicate the status of the BRIM-WT1.  
STB (Standby)  
On -All WAN bridge ports are in the non-forwarding state. Possible  
causes of this condition are: redundancy detected by Spanning Tree,  
data link layer down, physical layer down, or port disabled.  
Blinking - Some WAN bridge ports are in the forwarding state and  
some WAN bridge ports are in the non-forwarding state.  
Off - All WAN bridge ports are in the forwarding state.  
SYN (Synchronous)  
On - SYNC port is active.  
Off - T1/FT1 port is active.  
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CHAPTER 4: USING THE LANVIEW LEDS  
4.2 T1/FT1 PORT LEDS  
The following LEDs indicate the status of the T1/FT1 port.  
LOS (Loss of Signal)  
On - Indicates a loss of link at the T1/FT1 port. This condition  
occurs when the T1/FT1 port receives 192 consecutive 0’s, this  
should not happen under normal conditions. Check the T1 port  
cable.  
Off - Signal OK.  
TST (Test)  
On - Indicates that the T1/FT1 port is in the test mode.  
Off - Indicates that the T1/FT1 port is in the non-test mode.  
YEL (Yellow Alarm)  
On - Indicates that the remote bridge has lost T1 Frame  
synchronization. Check the remote bridge, T1 port cable, or T1  
Frame Type setting.  
Off - Synchronization OK.  
RED (Red Alarm)  
On - Indicates that the bridge has lost T1 Frame synchronization  
with the remote bridge. Check the remote bridge, T1 port cable, or  
T1 Frame Type setting.  
Off - Synchronization OK.  
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SYNC PORT LEDS  
4.3 SYNC PORT LEDS  
The following LEDs indicate the status of the SYNC port.  
DSR (Data Set Ready)  
On - Indicates that the DCE is ready to operate, or that the Force  
DSR True field (refer to the WAN Physical Configuration screen) is  
set to YES (On).  
Off - A valid DSR is not being received from the DCE. Check the  
cabling or check if the DCE is powered on.  
CTS (Clear to Send)  
On - Indicates that the DCE is ready to receive data from the  
BRIM-WT1, or that the Force CTS True field (refer to the WAN  
Physical Configuration screen) is set to YES (On).  
Off - A valid CTS is not being received from the DCE. Check the  
cabling or check if the DCE is powered on.  
LNK (Link)  
On - Indicates that the BRIM-WT1 is receiving a valid clock from  
the DCE.  
Off - Indicates that the BRIM-WT1 is not receiving a valid clock  
from the DCE. Check the cabling, check that the DCE is powered  
on, or check that the clock source is set properly in the DCE.  
TST (Test)  
On - Indicates that the SYNC port is in test mode.  
Off - Indicates that the SYNC port is in non-test mode.  
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CHAPTER 4: USING THE LANVIEW LEDS  
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