Chapter Troubleshooting | Cabletron Systems EMM-E6 Ethernet instruction

USING LANVIEW

CHAPTER 14

TROUBLESHOOTING

This chapter includes information for troubleshooting network and EMM- E6 operational problems. The following sections describe the EMM-E6’s LANVIEW LEDs, provide a troubleshooting checklist, and explain how and when to reset the EMM-E6.

14.1USING LANVIEW

The EMM-E6 uses the Cabletron Systems built-in visual diagnostic and status monitoring system called LANVIEW. With LANVIEW, you can quickly scan the EMM-E6 LEDs to observe network status or diagnose network problems.

EMM-E6

SN

RESET

BRIM-A100

CPU

D C B A

STBY

RCV

XMT

CLN

Figure 14-1. LANVIEW LEDs

EMM-E6 User’s Guide

14-1

Image 146

Cabletron Systems EMM-E6 Ethernet manual Chapter Troubleshooting, Using Lanview

Contents

EMM-E6 USER’S Guide EMM-E6 Windows is a registered trademark of Microsoft Corp FCC Notice DOC Notice Vcci Notice Cabletron SYSTEMS, INC Program License Agreement Bellcore Testing Information Cabletron Software Program License Exclusion of Warranty Disclaimer of Liability United States Government Restricted Rights Table of Contents Table of Contents Attaching a Console Accessing Local Management Community NamesConfiguration Screen Trap Table Screen Troubleshooting Router Setup Screen Device Statistics ScreenCommand Line Interface Screen MIB Navigator Image File Download Appendix a EMM-E6 Specifications Appendix B EMM-E6 OIDs Using this Manual Chapter Introduction Introduction Using this Manual EMM-E6 Features Lanviewsecure Support Ieee 802.1d Compliant Available Routing ServicesI960 Processor Design Special Filtering Database EMM-E6 User’s Guide User Configurable EPIMs Expandable Flash Eeprom Memory Expandable Sdram Lanview Diagnostic LEDsExpandable Ldram Snmp and Rmon support In-Band Telnet with MIB Navigator DLM SupportLocal Communication Ports Port Locking and Lanviewsecure Support Mmac with Flexible Network BUS Mmac Chassis Ethernet Channels A, B, C, D, E, and F Ethernet Channel a Ethernet Channels B and C Other FNB Modules Ethernet Channel D Snacmim TRMIM-32A TRMIM-34A TRRMIM-F2T TRRMIM-F3T Channels E and F Bridges OSI Model Filtering and Forwarding Spanning Tree Algorithm Local Management Features Community Names Snmp MAC Addresses MIBsReview of Addressing 00-00-1D-00-26-FB IP Addresses Class a Identifying IP Address Classes Subnet Addresses Subnet Masks S H Examples of Class C Subnet Masks Examples of Class B Subnet Masks Default Gateway Operation of the Subnet Mask Addressing Example EMM-E6 User’s Guide Lanview LEDs and Reset Switch Lanviewsecure EMM-E6 User’s Guide Getting Help Related Manuals Chapter Requirements / Configurations Network Requirements 1 10BASE-T Twisted Pair Network Network Requirements Multimode Fiber Optic Network Single Mode Fiber Optic Network Thin-net Network Transceiver Requirements Repeater Media Interface Modules Port Assignment Modules Sample Repeater MIMs Sample Network Configurations Three Networks With a Single MMAC-FNB EMM-E6 as a Multiport Router Adding Users to a Separate Segment Ing le Channe l Fault Tolerant Wiring Hierarchy Sample Network Configurations EMM-E6 and BRIMs Chapter Installation Unpacking the EMM-E6 Quantity Setting Mode Switches EMM-E6 Mode Switches Do not change the state of Switch 6 unless you Setting Mode Switches Simm Upgrades Locating SIMMs Simm Slot Locations Installing SIMMs Installing a Simm To install a Simm To install an Epim ADDING/REPLACING EPIMs Brim Connector Locations Locating BRIMs PRE-INSTALLATION Test Pre-Installation Test Installing the EMM-E6 Mmac M8FNB EMM-E6 EMM-E6 Installation CHECK-OUT Installation Checkout Connecting to the Network Connecting a Twisted Pair Segment to an EPIM-T EPIM-T Connecting an AUI Cable to an EPIM-X 12. The EPIM-X Connecting to an EPIM-F1/F2, or EPIM-F3 Connecting to the Network EMM-E6 User’s Guide Connecting a Thin-Net Segment to an EPIM-C 14. The EPIM-C Connecting an AUI Cable to an EPIM-A 15. The EPIM-A EMM-E6 User’s Guide Configuring Your Terminal Chapter Attaching a Console Keyboard Set-up Menu Display Setup MenuCommunications Setup Menu Configuring a Console Cable Connecting to a VT Series Terminal VT S i T i l Connecting to an IBM PC or Compatible RJ45 Configuring a UPS CablePinout Descriptions DB9 Chapter Accessing Local Management EMM-E6-960 Local Management Feature Selection Screen EMM-E6 User’s Guide Accessing the Community Name Table Chapter Community Names Community Name AccessCommunity Name Table Screen Fields Establishing Community Names Chapter Configuration Screen Accessing the Configuration Screen IP Address Configuration Screen FieldsChannel Port Enable Override Default InterfaceDefault Gateway SubNET Mask Setting the Host IP Address Host IP applies to each interface Modifying a Subnet Mask Setting Default Gateway and Interface Setting Default Gateway and Interface CONNECTING/DISCONNECTING a UPS Unlocking Ports Enabling Ports Accessing the Trap Table Screen Chapter Trap Table Screen Snmp Community Name Configuring the Trap TableTrap Table Screen Fields Traps If you exit without saving, you lose all edits Accessing the Snmp Tools Screen Chapter Snmp Tools Screen Snmp Tools Screen Fields Repeat Security Access LevelCycles Getting and Setting Oids Community Name Getting and Setting Oids Scrolling Through MIB Oids Scrolling Through MIB Oids EMM-E6 User’s Guide Chapter Router Setup Screen Router Setup Screen Chapter Device Statistics Screen Device Statistics Screen Device Statistics Device Statistics Screen Commands Slot Selecting an Update FrequencyNetwork Port Selecting a Network/Slot/Port Enabling Ports Disabling Ports Exiting the Device Statistics Screen Chapter Command Line Interface Screen EMM-E6 CLI Information Screen Chapter MIB Navigator Managing Device MIBs Accessing the MIB Navigator MIB Navigator Command SET Overview Conventions For MIB Navigator Commands Navigation Commands Branch Navigation Commands cont’d Format cd Path Example MIBNav cd iso/org/dod/internet/mgmt 13-6 EMM-E6 User’s Guide EMM-E6 User’s Guide 13-7 13-8 EMM-E6 User’s Guide EMM-E6 User’s Guide 13-9 13-10 EMM-E6 User’s Guide Built-In Commands Example MIBNav arp -a Built-In Commands cont’d Netstat EMM-E6 User’s Guide 13-13 Example EMM-E6 User’s Guide 13-15 Special Commands Format Done Chapter Troubleshooting Using Lanview Color Description Error Condition Recommended Action LED EMM-E6 User’s Guide 14-3 Troubleshooting Checklist Troubleshooting Checklist Problem Possible Causes Recommended Action 14-6 EMM-E6 User’s Guide Using the Reset Switch Chapter Image File Download Getting Started Decompress the image ﬁle Forced Download with Unix 15-4 EMM-E6 Users Guide EMM-E6 Users Guide 15-5 15-6 EMM-E6 Users Guide Standard Download Procedure Standard Local Download Remote Runtime Download Runtime Download Procedure 15-10 EMM-E6 Users Guide Appendix a EMM-E6 Specifications Bridging Functionality Repeater Functionality Environmental Requirements COM 1 PortCOM 2 Port Safety Physical Properties EPIM-T 10BASE-T Twisted Pair Port 10BASE-T EPIM-F1/F2 Multimode Fiber Optic Port EPIM-F2 EPIM-F3 Single Mode Fiber Optic Port Figure A-4. EPIM-F3 Parameter Typical Minimum EPIM-C BNC Port Thin-net cable Figure A-5 EPIM-A and EPIM-X AUI Port Type Position D type receptacle Spanning Tree Protocol CtBridgeStpProtocolSpecificationAppendix B Configuring ARP Request Packets RptrScrAddrMgmtHashType RptrPortGrpSrcAddrLock Port Group SecurityRptrSrcAddrMgmtPortLock RptrPortSecurityLockDelAddress RptrPortSecurityLockStatusRptrPortSecurityLockAddAddress Object Identiﬁer RptrPortSecurityDisableOnViolation RptrPortSecurityFullSecEnabled RptrHwTrapsSetLink Enabling & Disabling Snmp TrapsEnabling Network Level Snmp Traps RptrHwTrapsSetSeg RptrPortGrpHwTrapSetLink Enabling Module Level Snmp TrapsRptrSaTrapSetScraddr RptrPortGrpSaTrapSetSrcaddr Enabling Port Level Snmp TrapsRptrPortGrpHwTrapSetSeg RptrPortHwTrapSetLink RptrPortHwTrapSetSeg ChCompName ChCompAdminStatusActivating Rmon Groups Trunk Port Security Dot1dstpPortEnableBridging RptrPortSrcAddrForceTrunk FnbPortConnectPortAssignment Channel SelectionFnbconnect RptrSrcAddrMgmtHashType OID Hashing on Source AddresesRemote Downloading 10BASE-T Glossary10BASE-FL ATM Brim BootpAUI Card BroadcastBuses Chassis CSMA/CD Eeprom DLMDNI Epim Fddi FNB Ietf IanaIeee Lanview ISOLAN Ldram MIB MIM Nvram OID Rmon PVCRmim Sdram Snmp SimmSMA SQE STP TCP UTP Index Numerics Lanview Eeprom Tprmim EMM-E6 LED Description Installation