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Cabletron Systems 3T02-04 manual Typical Configurations, Connecting The Token Ring Module To A Hub

Models: 3T02-04

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Chapter 2: Connecting to the Network

2.3 TYPICAL CONFIGURATIONS

Physical connectivity to a Token Ring network is provided by either shielded twisted pair (STP) or unshielded twisted pair (UTP) cabling that connects the Token Ring module to a Hub. Each Token Ring switch module provides only one kind of connector, either four DB9 connectors for STP cabling or four RJ45 connectors for UTP cabling.

2.4CONNECTING THE TOKEN RING MODULE TO A HUB

It is not possible to attach workstations directly to the ATX Token Ring port. Either an active or a passive Hub must be used. A passive Hub contains fairly simple electronics (principally relays) which form a self-healing electrical ring. An active Hub contains more sophisticated ring-maintenance circuitry and may be manageable.

2.4.1Unshielded Twisted Pair

When using Unshielded Twisted Pair cabling in a Token Ring environment, make sure that it conforms to the speciﬁcations in Table 2-1 (this assumes patch cables that are no longer than 8 feet or 2.4 meters):

Table 2-1 Unshielded Twisted Pair Cabling Speciﬁcations

	Data Rate	Compatibility	Cable Type	Longest Lobea


		IBM and IEEE	EIA/TIA Category 3/4	100 m (328 ft.)
	4 Mbps	UTP 802.5	EIA/TIA Category 3/4	100 m (328 ft.)
	4 Mbps	UTP 802.5	EIA/TIA Category 5	125 m (410 ft.)
		Token Ring	EIA/TIA Category 5	125 m (410 ft.)
		Token Ring

		IBM and IEEE	EIA/TIA Category 3/4	45 m (147 ft.)
	16 Mbps	UTP 802.5	EIA/TIA Category 3/4	45 m (147 ft.)
	16 Mbps	UTP 802.5	EIA/TIA Category 5	45 m (147 ft.)
		Token Ring	EIA/TIA Category 5	45 m (147 ft.)
		Token Ring

a. To assure compatibility with future LANs, the longest lobe should be limited to 100 meters.

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Token Ring Switch Module User Guide

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Cabletron Systems 3T02-04 manual Typical Configurations, Connecting The Token Ring Module To A Hub, Unshielded Twisted Pair

Contents

TOKEN RING SWITCH MODULE 3T02-04 AND 3T01-04 USER GUIDE Page Token Ring Switch Module User Guide Token Ring Switch Module User Guide FCC NOTICEDOC NOTICE VCCI NOTICEEXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY Token Ring Switch Module User GuideCABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT CABLETRON SOFTWARE PROGRAM LICENSEToken Ring Switch Module User Guide UNITED STATES GOVERNMENT RESTRICTED RIGHTSCONTENTS CHAPTER 2 CONNECTING TO THE NETWORKCONFIGURING Token Ring Switch Module User GuideContents CHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTINGTECHNICAL SPECIFICATIONS Token Ring Switch Module User GuideCHAPTER INTRODUCTION 1.1 DOCUMENT CONVENTIONS 1.2 RELATED MANUALS 1.3 GETTING HELPanonymous your email address1.4 GENERAL DESCRIPTION 1.6 CONNECTORS 1.5 STANDARDSFigure 1-1 ATX Front Panel Figure 1-2 3T02-04 and 3T01-04 Front Panels1.7 LEDs Token Ring Switch Module User GuideChapter 1 Introduction Page2.2 POWER-UP LED SEQUENCE CHAPTER CONNECTING TO THE NETWORK2.1 INTRODUCTION 2.3 TYPICAL CONFIGURATIONS 2.4 CONNECTING THE TOKEN RING MODULE TO A HUB2.4.1 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 CHAPTER CONFIGURING 3.1 INTRODUCTION3.2 CONNECTING THE LCM 3.3 LCM COMMANDS3.4 SETTING THE RING SPEED 3.5 CONFIGURING THE BRIDGING TYPE 3.5.1 Transparent3.5.2.1 Bridging Method 3.5.2 Source Routing and SRT3.5.2.2 Segment Number 3.5.2.3 Bridge Number 3.6 TRANSLATION OPTIONS3.6.1 ARP Translation 3.6.2 Source Routing ARP Translation 3.6.3 IPX Translation3.6.4 AppleTalk Translation Off - perform no translation On - translate the packets Chapter 3 Conﬁguring Token Ring Switch Module User GuidePage CHAPTER STATISTICS 4.1 DISPLAYING PORT STATUSDisabled - 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 4.2 MODULE STATISTICS Table 4-1 Destination Addresses and Forwarding OutcomesDestination Address Forwarding OutcomesifTxSizes - The number of packets not sent due to size limitations Chapter 4 Statistics Token Ring Switch Module User GuidePage CHAPTER DIAGNOSTICS AND TROUBLESHOOTING 5.1 POWER-UP DIAGNOSTICS 5.1.1 Power-up Tests5.2 OPERATIONAL DIAGNOSTICS 5.2.1 Loopback Tests 5.1.2 Power-up ResultsChapter 5 Diagnostics and Troubleshooting 5.2.2 Diagnostic Results 5.3 TROUBLESHOOTING 5.3.1 If the Module Fails to Power Up5.3.2 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 APPENDIX B BRIDGING METHODS B.1 OVERVIEWB.2 TRANSPARENT BRIDGING Appendix B Bridging MethodsB.3 SOURCE ROUTING BRIDGING Figure B-1 Source Routing ExampleStation 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