Avaya Troubleshooting Routers Sept 99,

2015-06-01

• Troubleshooting Routers
• Contents
• Figures
• Tables
• Preface
  • Before You Begin
  • Text Conventions
  • Acronyms
  • Hard-Copy Technical Manuals
  • How to Get Help
• Chapter1 Introduction
  • Preventing Problems
    • Reading the Release Notes and Relevant Documentation
    • Minimizing Disruption When Installing New Software
    • Selecting the Proper Tool for Configuring a Router
    • Saving Your Configuration Changes
    • Backing Up Your Files
    • Maintaining Consistent Files in Multiple Flash Memory Cards
    • Handling Flash Memory Cards to Prevent Static Damage
    • Responding to a Failed prom Command
  • Preparing to Troubleshoot
    • Getting Acquainted with the Troubleshooting Tools
      • Using the System Log to Display Event Messages
      • Displaying and Changing Configuration Settings and Statistics
      • Using the ping Command
      • Using the Packet Capture Tool
      • Using Inbound Telnet to Access the Technician Interface
    • Taking a Snapshot of Your Network
  • Documenting Each Step
  • Performing One Corrective Task at a Time
• Chapter2 Determining the Scope of a Problem
• Chapter3 Troubleshooting an Operational Problem
  • Damaged Router
  • Power Problem
  • Blown Fuse
  • LEDs Are Off
  • Router Won’t Boot
  • Checking the Boot PROMs
  • Making Sure the Router Software Image Is Correct
  • Making Sure All Slots Use the Same Router Software Image and Configuration File
    • Verifying That the Router Software Images in Each Processor Match
    • Verifying That the Configuration Files in Each Processor Match
  • Lost Password (BN Routers)
  • No Space Left on Memory Card
  • Memory or Buffer Problem
  • Bad Forward Receive Buffer Checksum Errors
    • Finding the Slot That Sent a Bad Backplane BofL Packet
    • Finding the Slot That Sent a Bad Packet That Was Not a BofL Packet
  • Fault Message
• Chapter4 Troubleshooting a Physical Media Problem
  • Making Sure the Link Module Is Working
  • Determining the Media-Specific State
  • Troubleshooting the Cable Connection
• Chapter5 Troubleshooting a Data Link Layer Problem
  • Troubleshooting an ATM Connection
    • Interface Problems
      • Dropped Frames
      • ATM VC Mod Failed Message
      • Upper-Layer Protocols Failing to Pass Packets
      • PVC Problems
    • Troubleshooting ATM LANE
  • Troubleshooting an Ethernet Connection
  • Troubleshooting a FDDI Connection
  • Troubleshooting a Frame Relay Connection
    • Log Messages from Frame Relay Indicate Circuit Is Down
    • Frame Relay Switch Keeps Marking the Circuit as Down
    • Frame Relay Circuit Up, but Protocol Data Is Not Transmitting
    • PVC Transmitting, but Not Receiving
    • Frame Relay Configured with LMI Invokes an Xoff State
  • Troubleshooting an MCT1 Connection
  • Troubleshooting an FT1 Connection
  • Troubleshooting a Synchronous Connection
    • Checking the Address Format (Nortel Networks Standard Only)
    • Troubleshooting a Synchronous to X.21 Connection
    • Reception Errors Incrementing or Reception Count Not Incrementing
    • Troubleshooting the Internal Clock Settings (Lab Environments Only)
  • Troubleshooting a Token Ring Connection
  • Troubleshooting Other Data Link Layer Protocols
• Chapter6 Troubleshooting a Network Layer Problem
  • Troubleshooting AppleTalk
    • Local Net Range Conflict Event Message
    • Zone . . . Conflict Event Message
    • Static Configuration Conflict Event Message
  • Troubleshooting DLSw
  • Troubleshooting IP
    • Troubleshooting Telnet, FTP, and TFTP
    • Ping Does Not Work
      • Router Cannot Ping Another Local Device
      • Router Cannot Ping Endstation, but Can Ping Other Endstations on the Same Segment
      • Endstation Cannot Ping the Remote Interface on the Router
      • Endstation Can Ping Devices on the Same Segment, but Cannot Ping the Router
      • Endstation Can Ping Local and Remote Interfaces on the Router, but Cannot Ping a Remote Station
    • Troubleshooting RIP
    • Troubleshooting OSPF
  • Troubleshooting IPX
  • Troubleshooting OSI
  • Troubleshooting Switched Services
    • Master Cannot Connect to Slave
    • Troubleshooting RS-232 Raise DTR Dial Services
    • Troubleshooting V.35 Raise DTR Dial (Balanced)
    • Troubleshooting ISDN BRI and PRI
  • Troubleshooting Other Network Layer Protocols
• Chapter7 Troubleshooting a Site Manager Problem
  • Site Manager Won’t Start
    • Site Manager Won’t Start on a PC
      • Cannot Find File Message
      • Working Directory or Path Is Invalid Message
      • Unable to Find UDP Port Numbers for SNMP Message
    • Site Manager Won’t Start on a UNIX Workstation
      • Unable to Load SNMP MIB or File Was Inaccessible Message
      • Unable to Run . . . Module Message
  • Cannot Establish a Site Manager Session with the Router
    • Using an Alternative Site Manager Workstation to Enable Access
    • Using the Technician Interface to Enable Access
    • Cannot Connect Site Manager Running on a PC
    • Cannot Connect Site Manager Running on a UNIX Workstation
    • Target Does Not Respond (or Similar Message)
  • Cannot Allocate Colormap Message
  • UNIX Workstation Generating Core Dumps
• Chapter8 Getting Help
  • Reporting a Problem to the NortelNetworks Technical SolutionsCenter
  • Sending and Retrieving Files
• Appendix A Reading the Event Log
  • System Startup
  • Dial-on-Demand Raise DTR Log
  • Dial-on-Demand V.25bis
  • MCT1 Log Information in a Lab Environment
• Appendix B Using the Technician Interface to Configure and Run Packet Capture
  • Overview
  • Implementation Notes
  • Getting Started
    • Preparing Packet Capture to Run
      • Assigning the Processors to Run Packet Capture
      • Creating an Instance of Packet Capture
      • Allocating Memory for the Packet Capture File
      • Specifying the Number of Bytes in Each Packet to Copy
      • Enabling Packet Capture
    • Starting Packet Capture
    • Terminating Packet Capture
    • Using the Technician Interface to Display a Packet Capture File
    • Deleting a Packet Capture Instance
  • Using Optional Features
    • Configuring the Direction of the Packets to Be Copied
    • Configuring a Termination Trigger
    • Assigning Filters
      • Setting the Filter Response to a Match
      • Specifying the String to Compare with the Packet Data
      • Specifying the Data to Compare with the String
      • Selecting the Number of Filters That Must Match
  • Configuration Examples
  • Displaying the Current Packet Capture Configuration Settings
  • Displaying Event Messages Issued by Packet Capture
  • Using a Sun Workstation or MS-DOS PC to Display Packets
    • Getting the Name of the Packet Capture File
    • Using FTP to Transfer the File
    • Using TFTP to Transfer the File
    • Using XMODEM to Transfer the File
    • Displaying the File with Packet Dump
  • Converting a Packet Capture File to Network General Sniffer Format
  • Reference Guide to Packet Capture
    • Displaying the Packet Capture Attribute Names and Numbers
    • Packet Capture Parameter Descriptions
      • Basic Parameters
      • Trigger Parameters
      • Filter Parameters
    • Media-Specific Instructions and Examples
      • CSMA/CD
      • Protocols Supported by Synchronous, T1, E1, and MCT1 Media
      • Token Ring
      • FDDI
      • HSSI
      • ISDN
    • Interpreting a Packet Capture Instance Number
• Appendix C Packet Configuration
  • Using the Line Subcommand
  • Using the Load Subcommand
  • Using the Unload Subcommand
• Index