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Cabletron Systems 3T02-04 manual Disabled - The port is not conﬁgured for Spanning Tree

Models: 3T02-04

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Chapter 4: Statistics

•Spanning Tree - the port's Spanning Tree state. This entry shows status only; it is not selectable. The following states apply to Spanning Tree:

-Blocking - The port is not currently the designated port to the LAN and is therefore not forwarding any packets. (This means there is another route to that LAN and, since the Spanning Tree protocol does not allow simultaneous redundant paths, this port is blocked. If the other route to that LAN goes down, this port would then begin forwarding packets.)

-Listening - The port is listening for other bridges on the network to determine if it should go to the forwarding or blocking state.

-Learning - The port is listening for other bridges on the network and making a table of addresses from packets that it has received. Once the port goes to the forwarding state, it can then use the address information it has learned.

-Forwarding - The port is the designated port for the LAN and is forwarding packets and sending out bridge protocol packets.

-Broken - The port is not forwarding packets. Reasons include no cable connected, no link status, the ring is not operational, or an NMS has disabled the port.

-Disabled - The port is not conﬁgured for Spanning Tree.

•Packets Transmitted - number of packets transmitted from the port. This entry shows status only; it is not selectable. This includes any packets that might have experienced transmission errors. (The port’s statistics are reset whenever the port is started.)

•Packets Received - number of good packets received through the port. This entry shows status only; it is not selectable. Packets with reception errors are not included, nor are packets local to that segment that are hardware ﬁltered.

•Small Buffers - number of buffers currently assigned to the port (see RX_Q Overﬂows below). This entry shows status only; it is not selectable.

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Token Ring Switch Module User Guide

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Cabletron Systems 3T02-04 manual Disabled - The port is not conﬁgured for Spanning Tree

Contents

TOKEN RING SWITCH MODULE 3T02-04 AND 3T01-04 USER GUIDE Page Token Ring Switch Module User Guide DOC NOTICE Token Ring Switch Module User GuideFCC NOTICE VCCI NOTICECABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITYToken Ring Switch Module User Guide CABLETRON SOFTWARE PROGRAM LICENSEToken Ring Switch Module User Guide UNITED STATES GOVERNMENT RESTRICTED RIGHTSCONFIGURING CONTENTSCHAPTER 2 CONNECTING TO THE NETWORK Token Ring Switch Module User GuideTECHNICAL SPECIFICATIONS ContentsCHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTING Token Ring Switch Module User GuideCHAPTER INTRODUCTION 1.1 DOCUMENT CONVENTIONS anonymous 1.2 RELATED MANUALS1.3 GETTING HELP your email address1.4 GENERAL DESCRIPTION Figure 1-1 ATX Front Panel 1.6 CONNECTORS1.5 STANDARDS Figure 1-2 3T02-04 and 3T01-04 Front PanelsChapter 1 Introduction 1.7 LEDsToken Ring Switch Module User Guide PageCHAPTER CONNECTING TO THE NETWORK 2.2 POWER-UP LED SEQUENCE2.1 INTRODUCTION 2.4.1 Unshielded Twisted Pair 2.3 TYPICAL CONFIGURATIONS2.4 CONNECTING THE TOKEN RING MODULE TO A HUB 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 Source Routing and SRT 3.5.2.1 Bridging Method3.5.2.2 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 Token Ring Switch Module User Guide Chapter 3 ConﬁguringPage 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 Destination Address 4.2 MODULE STATISTICSTable 4-1 Destination Addresses and Forwarding Outcomes Forwarding OutcomesifTxSizes - The number of packets not sent due to size limitations Token Ring Switch Module User Guide Chapter 4 StatisticsPage CHAPTER DIAGNOSTICS AND TROUBLESHOOTING 5.1 POWER-UP DIAGNOSTICS 5.1.1 Power-up Tests5.1.2 Power-up Results 5.2 OPERATIONAL DIAGNOSTICS 5.2.1 Loopback TestsChapter 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 6.1 UNPACKING THE TOKEN RING SWITCH MODULE 6.2 ADDING A TOKEN RING SWITCH MODULECHAPTER ADDING/SWAPPING MODULES Delete all static addresses 6.3 SWAPPING A MODULE Token Ring Switch Module User Guide Chapter 6 Adding/Swapping ModulesPage 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 ExampleFigure B-2 Data Path Using Source Routing Bridging Station AStation C B.4 SOURCE ROUTING TRANSPARENT BRIDGING Token Ring Switch Module User Guide Appendix B Bridging MethodsPage B-6 INDEX Token Ring Switch Module User Guide IndexIndex-2