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Title Page
Bridge/Router Interface (BRIM)
User’s Guide
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Notice Cabletron Systems reserves the right to make changes in speciÞcations 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, Þrmware, or software described in this manual is subject to change without notice. IN NO EVENT SHALL CABLETRON S
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Restricted Rights Notice (Applicable to licenses to the United States Government only.) 1. Use, duplication, or 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 DFARS 252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505. 2. (a) This computer software is submitted with restricted rights. It may not be used, reproduced, or disclosed by th
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Contents Chapter 1 Introduction Using the BRIM UserÕs Guide..................................................................................... 1-2 Related Manuals............................................................................................................ 1-3 BRIM Management Applications ............................................................................... 1-3 Software Conventions ..................................................................................
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Contents Changing Bridge Priority ............................................................................2-39 Changing the Spanning Tree Algorithm Protocol Type ..........................2-39 Changing Hello Time ...................................................................................2-40 Changing Max Age Time .............................................................................2-40 Changing Forwarding Delay Time..........................................................
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Contents ConÞguring SNAP Translation................................................................... 2-96 Using the Novell Translation Window .................................................................... 2-97 Using the Physical View Windows for the ETWMIM ........................................... 2-99 Ethernet Port Physical View............................................................................... 2-99 Token Ring Port Physical View..................................
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Contents vi
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Chapter 1 Introduction Using this guide; related manuals; management applications available for BRIMs; software conventions; getting help; contacting Cabletron Systems Global Call Center ¨ Welcome to the Cabletron SystemsÕ SPECTRUM Element Manager Bridge/Router Interface (BRIM) UserÕs Guide. We have designed this guide to serve as a reference for using SPECTRUM Element Manager for all types of BRIMs. Cabletron SystemsÕ Bridge/Router Interface Modules (BRIMs) provide ßexib
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Introduction BRIM-E100 The Fast Ethernet BRIM has a user-conÞgurable Fast Ethernet Port Interface Module (FEPIM) port that provides either 100BASE-TX connectivity (via an RJ-45 interface) or 100BASE-FX connectivity (via an MMF interface with an SC connector). BRIM-F6 The FDDI Bridge/Router Interface Module is a translational FDDI to Ethernet bridge, via media conÞgurable Fiber Port Interface Module (FPIM) connectors using MMF or SMF Þber, or UTP or STP coppe
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Introduction We assume that you have a general working knowledge of Ethernet IEEE 802.3, FDDI, WAN, and ATM type data communications networks and their physical layer components, and that you are familiar with general bridging concepts. Related Manuals The BRIM UserÕs Guide is only part of a complete document set designed to provide comprehensive information about the features available to you through SPECTRUM Element Manager. Other guides which includ
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Introduction ¥ FDDI menu will be available on devices that have an FDDI BRIM installed and enabled; see Chapter 3, FDDI Applications, for details. ¥ WAN Status will be available from the Device menu for devices that have a WAN BRIM installed and enabled; see Chapter 4, WAN Applications, for details. ¥ ATM Connections will be available from the Device menu for devices that have an ATM BRIM installed and enabled; see Chapter 5, ATM ConÞguration, for details. If you cannot determine if you hav
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Introduction Left Mouse Button Right Mouse Button Figure 1-1. Mouse Buttons For many mouse operations, this document assumes that the left (primary) mouse button is to be used, and references to activating a menu or button will not include instructions about which mouse button to use. However, in instances in which right (secondary) mouse button functionality is available, instructions will explicitly refer to right mouse button usage. Also, in situations where you may be switching between
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Introduction Common Device Window Fields Similar descriptive information is displayed in boxes at the top of most device-speciÞc windows in SPECTRUM Element Manager, as shown in Figure 1-2. Device Location Name MAC IP Address Address Figure 1-2. Sample Window Showing Group Boxes Device Name Displays the user-deÞned name of the device. The device name can be changed via the System Group window; see the Generic SNMP UserÕs Guide for details. IP Address Displays the deviceÕs IP (Internet Pro
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Introduction MAC Address The physical layer address assigned to the interface associated with the IP address used to deÞne the device icon when it was added to SPECTRUM Element Manager. MAC addresses are hard-coded in the device, and are not conÞgurable. Informational Þelds describing the boards and/or ports being modeled are also displayed in most windows: Board Number Displays the number indicating the position of the monitored board in the chassis. Port Number Displays the number of the mo
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Introduction Getting Help This section describes different methods of getting help for questions or concerns you may have while using SPECTRUM Element Manager. Using On-line Help You can use the BRIM window Help buttons to obtain information speciÞc to the device. When you click on a Help button, a window will appear which contains context-sensitive on-screen documentation that will assist you in the use of the window and its associated command and menu options. Note that if a Help button i
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Introduction Getting Help from the Cabletron Systems Global Call Center If you need technical support related to SPECTRUM Element Manager, or if you have any questions, comments, or suggestions related to this manual or any of our products, please feel free to contact the Cabletron Systems Global Call Center via one of the following methods: By phone: (603) 332-9400 24 hours a day, 365 days a year By mail: Cabletron Systems, Inc. PO Box 5005 Rochester, NH 03866-5005 By Internet mail: support@
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Introduction 1-10 Getting Help
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Chapter 2 Bridging About bridging methods; viewing and managing bridging interfaces; using the Bridge Status window; viewing bridge statistics; using Spanning Tree; using the Filtering Database; configuring duplex modes; using the Interface Configuration window; and setting Bridge Translation Bridging Basics Bridges are used in local area networks to connect two or more network segments and to control the ßow of packets between the segments. Ideally, bridges forward packets to another network
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Bridging Þlters a packet if it determines that the packetÕs destination address exists on the same side of the bridge as the source address. If two or more bridges are connected to the same Ethernet LAN segmentÑplaced in parallelÑonly a single bridge must be allowed to forward data frames onto that segment. If two or more bridges were forwarding data frames onto the same Ethernet segment, the network would soon be ßooded. With a data loop in the topology, bridges would erroneously associate
