Enterasys Networks BRIM-E6 User Manual
BRIM-E6
USER’S GUIDE
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005
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 August 1994 by:
Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Part Number: 9031027 August 1994
LANVIEW
MicroMMAC
Windows
Ethenet
CompuServe
is a registered trademark of Cabletron Systems, Inc.
and
BRIM
are trademarks of Cabletron Systems, Inc.
is a registered trademark of Microsoft Corp.
is a trademark of Xerox Corp.
is a registered trademark of CompuServe
Printed On Recycled Paper
BRIM-E6 USER’S GUIDE
i
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:
approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
Changes or modifications made to this device which are not expressly
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.
ii
BRIM-E6 USER’S GUIDE
CABLETRON SYSTEMS, INC.
PROGRAM LICENSE AGREEMENT
NOTICE
IMPORTANT
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.
: Before utilizing this product, carefully read this License Agreement.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE.
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.
THER RESTRICTIONS. You may not reverse engineer, decompile, or
2. O
disassemble the Program.
3. APPLICABLE LA
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.
You have the right to use only the one (1) copy of the Program pro vided
W. This License Agreement shall be interpreted and governed
EXCLUSION OF WARRANTY AND DISCLAIMER OF
LIABILITY
1. EXCLUSION OF
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.
BRIM-E6 USER’S GUIDE
WARRANTY. Except as may be specifically provided by
iii
NOTICE
2. NO LIABILITY FOR CONSEQ
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.
UENTIAL DAMAGES. IN NO EVENT SHALL
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at pri vate 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 52.2277013 (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
iv
BRIM-E6 USER’S GUIDE
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
1.1 USING THIS MANUAL................................................................... 1
1.2 GETTING HELP.............................................................................2
1.3 BRIM-E6 OVERVIEW..................................................................... 2
1.4 BRIM-E6 FEATURES.....................................................................2
1.5 BRIM-E6 SPECIFICATIONS.......................................................... 3
1.6 ETHERNET BRIDGING ................................................................. 4
1.7 RELATED MANUALS..................................................................... 6
CHAPTER 2 INSTALLATION
2.1 UNPACKING THE BRIM................................................................ 7
2.2 INSTALLING BRIMs.......................................................................7
2.2.1 Installing a BRIM-E6 in a MIM........................................... 8
2.2.2 Installing a BRIM in a Hub............................................... 10
2.2.3 Installing an EPIM into the BRIM.....................................11
CHAPTER 3 CONNECTING TO THE NETWORK
3.1 CONNECTING THE BRIM TO THE NETWORK.......................... 13
3.1.1 Connecting a UTP Segment to an EPIM-T...................... 13
3.1.2 Connecting a Fiber Optic Link Segment to
an EPIM-F1, EPIM-F2, or EPIM-F3.................................15
3.1.3 Connecting a Thin-Net Segment to an EPIM-C............... 17
3.1.4 Connecting an AUI Cable to an EPIM-A.......................... 19
3.1.5 Connecting an AUI Cable to an EPIM-X.......................... 20
3.2 FINISHING THE INSTALLATION................................................. 21
CHAPTER 4 USING THE LANVIEW LEDS
4.1 STB (Standby).............................................................................. 23
4.2 XMT (Transmit)............................................................................. 23
4.3 CLN (Collision) ............................................................................. 23
4.4 RCV (Receive).............................................................................. 23
BRIM-E6 USER’S GUIDE
v
CONTENTS
APPENDIX A EPIM SPECIFICATIONS
A.1 EPIM-T (10BASE-T TWISTED PAIR PORT)................................25
A.2 EPIM-F1 AND EPIM-F2 (MULTIMODE FIBER OPTIC PORTS)..26
A.3 EPIM-F3 (SINGLE MODE FIBER OPTIC PORT).........................27
A.4 EPIM-C (BNC PORT) ...................................................................29
A.5 EPIM-A AND EPIM-X (AUI PORTS).............................................30
APPENDIX B EPIM CABLE REQUIREMENTS
B.1 CABLE REQUIREMENTS ............................................................31
B.1.1 10BASE-T UTP and STP Cable Requirements ...............31
B.1.2 FOIRL/10BASE-FL Multimode Fiber Optic Cable
Requirements...................................................................33
B.1.3 FOIRL/10BASE-FL Single Mode Fiber Optic Cable
Requirements...................................................................34
B.1.4 10BASE-2 Thin-net Cable Requirements ........................35
B.1.5 AUI Cable Requirements .................................................36
INDEX
vi
BRIM-E6 USER’S GUIDE
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems
manual explains how to install the Bridge/Router Interface Module
(BRIM) for Ethernet into Cabletron products that support BRIM
technology (e.g., the EMM-E6 or MicroMMAC). It also explains
BRIM-E6 features and specifications.
BRIM-E6 User’s Guide
. This
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-E6. A general w orking knowledge of Ethernet, and IEEE 802.3
type data communications networks and their physical layer components
is helpful when using the BRIM-E6.
Chapter 1,
specifications, and concludes with a list of related manuals.
Chapter 2,
Media Interface Module (MIM) or a stand-alone product. This chapter
also explains how to install an Ethernet Port Interface Module (EPIM)
into the BRIM.
Introduction
Installation
, describes BRIM-E6 features, lists
, describes how to install the BRIM-E6 into a
Chapter 3,
segments to the EPIM.
Chapter 4,
BRIM-E6 LEDs to monitor BRIM performance and status.
Appendix A,
EPIMs available for the BRIM-E6.
Appendix B,
each of the EPIMs.
BRIM-E6 USER’S GUIDE
Connecting to the Network
Using the LANVIEW LEDS
EPIM Specifications
EPIM Cable Requirements
, explains how to connect network
, describes how to use the
, lists specifications for each of the
lists cable requirements for
Page 1
CHAPTER 1:
INTRODUCTION
1.2 GETTING HELP
If you need additional support related to the BRIM-E6, 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 ...............support@ctron.com
1.3 BRIM-E6 OVERVIEW
The BRIM-E6 extends the functionality of your individual MIM or
stand-alone hub to include Ethernet bridging capability. The BRIM-E6
has one user-configurable Ethernet Port Interface Module (EPIM)
interface. Cabletron Systems offers a variety of EPIMs that support
connections for Unshielded Twisted Pair, Shielded Twisted Pair,
Multimode Fiber Optic, Single Mode Fiber Optic, AUI, or Thin Coaxial
cable.
1.4 BRIM-E6 FEATURES
Ethernet Bridging
The BRIM-E6 adds an Ethernet bridged connection to any Cabletron
device with a BRIM expansion port. Refer to section 1.6 for more
information about Ethernet bridging.
MIB Support
For information on how to extract and compile individual MIBs, contact
Cabletron Systems Technical Support (see
LANVIEW Diagnostic LEDs
Getting Help
Cabletron equips the BRIM-E6 with a visual diagnostic and monitoring
system called LANVIEW. LANVIEW LEDs help you quickly identify
Bridge and Link status.
Page 2
BRIM-E6 USER’S GUIDE
).
BRIM-E6 SPECIFICATIONS
EPIM Connectivity
EPIMs allow you to configure the BRIM-E6 to support a variety of media
types. Cabletron Systems offers the EPIMs shown in Table 1-1.
Table 1-1. EPIMs
EPIM MEDIA TYPE CONNECTOR
EPIM-A AUI DB15 (Female)
EPIM-C 10BASE-2 Thin Coaxial BNC
EPIM-T 10BASE-T Unshielded
RJ45
Twisted Pair
EPIM-X Standard Transceiv er DB15 (Male)
EPIM-F1 Multimode Fiber SMA
EPIM-F2 Multimode Fiber ST
EPIM-F3 Single Mode Fiber ST
1.5 BRIM-E6 SPECIFICATIONS
The operating specifications for the BRIM-E6 are described in this
section. Cabletron Systems reserves the right to change these
specifications at any time without notice.
Environmental Requirements
Operating T emperature: -5° to +40° C
°
Non-operating T emperature: -30
Operating Humidity: 5 to 95% (non-condensing)
to +90° C
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.
BRIM-E6 USER’S GUIDE
Page 3
CHAPTER 1:
INTRODUCTION
1.6 ETHERNET BRIDGING
Bridging Overview
Ethernet bridges read in packets and make decisions to filter or forward
based on the destination address of the packet. The simple filter/forward
decision process allows a bridge to segment traf fic between two networks,
keeping local traffic local. This process increases the availability of each
network while still allowing traffic destined for the opposite side of the
bridge to pass.
A bridge connects two networks together and allows communications
between the networks without the worry of distance violations or timing
considerations between the two networks. Each individual network must
be within maximum distance and timing specifications however. The
bridge is considered to be a node on the network and stores and forwards
packets on each network. Contrasted with a repeater that repeats the
signal bit by bit from one side of the network to the other, the bridge
actually reads each packet, checks the packet for accuracy, then makes a
decision, based on the destination address, as to whether the packet
should be sent to the other network. If the other network is busy, it is the
bridge's responsibility to store the packet, for a reasonable time, until the
transmission can be made.
It is also the responsibility of the bridge to handle collisions. If a collision
happens as the bridge is transmitting onto the second network, the bridge
is responsible for the back off and retransmission process. The original
sending node is not made aware of the collision. It assumes the packet has
been sent correctly. If for some reason the bridge is unable to send the
packet to its final destination, the original sending station, expecting a
response from the device it was attempting to contact, will "time out" and,
depending on the protocol, attempt retransmission.
The bridge makes decisions on whether to forward or filter a packet based
on the physical location of the destination device with respect to the
source device. Bridges dynamically learn the physical location of devices
by logging the source addresses of each packet and the bridge port the
packet was received on in a table called the Source Address Table (SAT).
Page 4
BRIM-E6 USER’S GUIDE
ETHERNET BRIDGING
As with repeaters, IEEE recommends a maximum number of bridges that
can be in a signal path. W ith repeaters we are able to ha v e a signal path of
4 repeaters, 5 segments. With bridges we can have a signal path of 7
bridges, 8 networks. The bridge count includes both local and remote
bridges.
Spanning Tree Algorithm
Since bridges play a very important role in the transfer of data from one
network to another, a helpful feature would be the ability to set up a
redundant bridge that would commence operation automatically if the
primary bridge failed. In the IEEE draft standard 802.1d, IEEE chose to
build some fault tolerance into the bridge specification. The 802.1d
specification defines bridge operation, redundancy and a process called
Spanning Tree Algorithm (STA). STA manages the primary and backup
bridges and also guards against data loops and duplicate data.
When a bridge is powered up, it goes through a series of self tests to
check its internal operation. During this time the bridge is in a standby , or
blocking condition and will not forward traffic. Also during this standby
period, the bridge sends out special bridge management packets called
Configuration Bridge Protocol Data Units (BPDU). A BPDU is 1 byte in
length and serves to identify the BPDU type as either a configuration or
topology change BPDU. Bridges use the BPDU packets as a way of
communicating with each other.
Spanning Tree Operation
Upon power up, Bridge 1 and 2 enter a standby, or blocking condition.
Bridge 2 transmits a Configuration BPDU from its root port claiming it is
the root. The BPDU is seen by Bridge 1 which inspects the BPDU for
address and priority along with other pertinent information. Assuming
equal priorities, Bridge 1 will transmit a BPDU to inform Bridge 2 of
Bridge 1's address and priority. Upon seeing the response from Bridge 1,
Bridge 2 determines that Bridge 1 has the higher priority and is therefore
the primary (or Root) bridge. Bridge 2 will remain in a standby or
blocking condition and will continue to monitor the network, listening for
Bridge 1 Configuration BPDUs. Once Bridge 1 is sure there are no data
loops, Bridge 1 comes on-line and normal network operations will
resume. This process is called spanning.
BRIM-E6 USER’S GUIDE
Page 5
CHAPTER 1:
INTRODUCTION
If Bridge 2 fails to receive the Bridge 1 BPDUs during the period defined
by "Hello Time", Bridge 2 will initiate a re-span by transmitting a
topology change BPDU and eventually come on line to carry the network
load.
Bridges using STA can be utilized to create very fault tolerant networks.
This section has presented only basic information about bridges and
Spanning Tree Algorithm. For additional information, refer to the IEEE
802.1d draft specification.
1.7 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’
Cabletron Systems’
Cabletron Systems’
Cabletron Systems’
Cabletron Systems’
Cabletron Systems’
Cabletron Systems’
EMM-E6 Installation Guide
EMM-E6 Local Management Guide
ESXMIM Installation Guide
ESXMIM Local Management Guide
MicroMMAC User’s Guide
NBR-620/420/220 Installation Guide
NBR-620/420/220 Local Management Guide
Page 6
BRIM-E6 USER’S GUIDE
Loading...