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Cabletron Systems 3T02-04 manual B.4 SOURCE ROUTING TRANSPARENT BRIDGING

Models: 3T02-04

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Source Routing Transparent Bridging

B.4 SOURCE ROUTING TRANSPARENT BRIDGING

Source Routing Transparent (SRT) bridging is a method that merges IBM-style source routing with transparent spanning tree bridging. If a route is present in a packet, then the bridge uses it; otherwise the bridge applies transparent learning rules. It represents an attempt by the IEEE standards committee to standardize source routing and correct some shortcomings in source routing (notably multicast transmission). IEEE has deﬁned SRT bridging for Token Rings, and ANSI has incorporated it into the FDDI standards. The ATX supports SRT bridging on these, as well as on Ethernet (for Ethernet, there is no such standard; the ATX provides this as a proprietary backbone service).

Token Ring Switch Module User Guide

Page B-5

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Cabletron Systems 3T02-04 manual B.4 SOURCE ROUTING TRANSPARENT BRIDGING

Contents

TOKEN RING SWITCH MODULE 3T02-04 AND 3T01-04 USER GUIDE Page Token Ring Switch Module User Guide FCC NOTICE Token Ring Switch Module User GuideDOC NOTICE VCCI NOTICEToken Ring Switch Module User Guide EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITYCABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT CABLETRON SOFTWARE PROGRAM LICENSEUNITED STATES GOVERNMENT RESTRICTED RIGHTS Token Ring Switch Module User GuideCHAPTER 2 CONNECTING TO THE NETWORK CONTENTSCONFIGURING Token Ring Switch Module User GuideCHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTING ContentsTECHNICAL SPECIFICATIONS Token Ring Switch Module User GuideCHAPTER INTRODUCTION 1.1 DOCUMENT CONVENTIONS 1.3 GETTING HELP 1.2 RELATED MANUALSanonymous your email address1.4 GENERAL DESCRIPTION 1.5 STANDARDS 1.6 CONNECTORSFigure 1-1 ATX Front Panel Figure 1-2 3T02-04 and 3T01-04 Front PanelsToken Ring Switch Module User Guide 1.7 LEDsChapter 1 Introduction Page2.2 POWER-UP LED SEQUENCE CHAPTER CONNECTING TO THE NETWORK2.1 INTRODUCTION 2.4 CONNECTING THE TOKEN RING MODULE TO A HUB 2.3 TYPICAL CONFIGURATIONS2.4.1 Unshielded Twisted Pair Chapter 2 Connecting to the Network2.4.2 Shielded Twisted Pair Figure 2-2 Connecting a Token Ring Module to an STP MAU 3.1 INTRODUCTION CHAPTER CONFIGURING3.3 LCM COMMANDS 3.2 CONNECTING THE LCM3.5 CONFIGURING THE BRIDGING TYPE 3.5.1 Transparent 3.4 SETTING THE RING SPEED3.5.2.1 Bridging Method 3.5.2 Source Routing and SRT3.5.2.2 Segment Number 3.6 TRANSLATION OPTIONS 3.5.2.3 Bridge Number3.6.1 ARP Translation 3.6.3 IPX Translation 3.6.2 Source Routing ARP Translation3.6.4 AppleTalk Translation Off - perform no translation On - translate the packets Chapter 3 Conﬁguring Token Ring Switch Module User GuidePage 4.1 DISPLAYING PORT STATUS CHAPTER STATISTICSDisabled - The port is not conﬁgured for Spanning Tree RXQ Overﬂows - number of incoming packets dropped by the port due to a lack of buffers. This entry shows status only it is not selectable. After a reboot, the ATX tries to automatically re-allocate the Small Buffers among the ports so that the total number of RXQ Overﬂows is minimized Table 4-1 Destination Addresses and Forwarding Outcomes 4.2 MODULE STATISTICSDestination Address Forwarding OutcomesifTxSizes - The number of packets not sent due to size limitations Chapter 4 Statistics Token Ring Switch Module User GuidePage 5.1 POWER-UP DIAGNOSTICS 5.1.1 Power-up Tests CHAPTER DIAGNOSTICS AND TROUBLESHOOTING5.2 OPERATIONAL DIAGNOSTICS 5.2.1 Loopback Tests 5.1.2 Power-up ResultsChapter 5 Diagnostics and Troubleshooting 5.3 TROUBLESHOOTING 5.3.1 If the Module Fails to Power Up 5.2.2 Diagnostic Results5.3.2 Connectivity Problems 6.2 ADDING A TOKEN RING SWITCH MODULE 6.1 UNPACKING THE TOKEN RING SWITCH MODULECHAPTER ADDING/SWAPPING MODULES Delete all static addresses 6.3 SWAPPING A MODULE Chapter 6 Adding/Swapping Modules Token Ring Switch Module User GuidePage APPENDIX A TECHNICAL SPECIFICATIONS DB9 for STP RJ45 for UTP B.1 OVERVIEW APPENDIX B BRIDGING METHODSAppendix B Bridging Methods B.2 TRANSPARENT BRIDGINGFigure B-1 Source Routing Example B.3 SOURCE ROUTING BRIDGINGStation A Figure B-2 Data Path Using Source Routing BridgingStation C B.4 SOURCE ROUTING TRANSPARENT BRIDGING Appendix B Bridging Methods Token Ring Switch Module User GuidePage B-6 INDEX Index Token Ring Switch Module User GuideIndex-2