Resolving Connectivity Problems | Nortel Networks 14.2 specs

Configuring Remote Access for AN and Passport ARN Routers

•If the BootP server is not receiving requests, ensure that the upstream router is receiving and forwarding them. If the upstream router is receiving, verify that each router interface between the upstream router and the BootP server is receiving and forwarding the requests.

If the BootP server is receiving requests but is failing to respond, see “Router Fails to Netboot” on page B-3.

Resolving Connectivity Problems

This section describes how to:

•Display the AN/ANH or ARN router’s netboot configuration

•Debug the BootP server

•Verify the BootP server’s setup

•Display the BootP server’s IP routes

•Display the number of BootP packets forwarded and dropped

Displaying Parameter Settings

Display the AN/ANH or ARN router’s netboot parameter settings to determine the following:

•Whether the router is set to boot using a local boot image or a remote boot image

•Whether the router is set to configure using a local configuration file or a remote configuration file

•The configuration of the synchronous, Ethernet, and token ring (ARN only) connectors

Enter the following Technician Interface command to display the AN/ANH or ARN router’s startup options:

getcfg

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Nortel Networks 14.2 manual Resolving Connectivity Problems, Displaying Parameter Settings

Contents

Configuring Remote Access for AN and Passport ARN Routers Copyright 1999 Nortel Networks TrademarksRestricted Rights Legend Statement of Conditions Nortel Networks NA Inc. Software License Agreement Iii 308614-14.20 Rev Contents Chapter Setting Up a Unix Boot Server Chapter Managing ANH Repeater Ports Appendix C Using the Quick-Start Local Boot Procedure Figures Page Tables Page Preface Before You Begin Text Conventions Bold textPing Example Enter show ip alerts routes Acronyms Italic text Ccitt Hard-Copy Technical Manuals How to Get Help Technical Solutions Center Telephone Network Configuration and Management Tools Chapter Understanding Tools and Options Router Startup Procedure Startup Files Startup Options Router Startup Files Summary of Startup Options for AN/ANH and ARN Routers Pcmcia Boot Process Netboot Process Configuring Remote Access for AN and Passport ARN Routers Calculating an IP Address Direct Access PVC or Standard PPP Key AN/ANH/ARN Obtaining the Kernel and Configuration Files Obtaining the Configuration File Obtaining the Kernel File Local Boot Process Establishing an IP Network Interface Preparing for the Initial Startup Selecting the Initial Startup Option EZ-Install Local Boot Providing a Tailored Configuration File Netboot Netboot Selecting the Routine Startup OptionRecommendations Directed Netboot Local Boot Steps for Completing Startup Options EZ-Install Netboot Directed Netboot Local Boot Chapter Setting Up a Unix Boot Server To Configure This Startup Option Complete These SectionsTopic Setting Up a BootP Server Setting Up BootP SocketsConfiguring BootPD Copying BootPD on Sun Workstations Setting Up BootPD to Run Setting Up BootPD to Respond to AN/ANH and ARN RoutersEnter the following command cp /usr/wf/bin/bootpd /etc Log in to the Unix workstation as root Save the bootptab file changes Editing the bootptab FileCp /usr/wf/config/bootptab /etc BootPD Tags for a Router Host Name Required or Tag Optional Value Example BootPD Tags for a Kernel File Name Required Tag Or Optional Value Example Verifying Consistent BootP Service Sample bootptab File T130=0x0004\ T129=/rte3/cfg/ANChic.cfg\ tc=general Setting Up a Tftp Server Setting Up TftpdProviding Tftp Access to All Directories Providing Tftp Access to All Directories Restricting Tftp Access to Specified Directories Restricting Tftp Access to Specified DirectoriesLn -s . usr Ln -s . tftpboot Setting Up Static Routes to Next-Hop Routers Adding a Tftp User for an HP 9000 WorkstationEditing the /etc/inetd.conf File Tftpuseridgroupno.//bin/false Verifying the Routes Loading the Changes into MemoryLog in as root Netstat -r What to Do Next Kill -1Page Configuring Netboot Services with Site Manager Preparing Configuration and Image Files Creating Configuration Files Configuration Manager Module Names for AN and ANH ARN Base Module ConfigurationsModule Name Mnemonic Connector Type Base Module Site Manager Module Name ARN Expansion Module Configurations ARN Adapter Module ConfigurationsExpansion Module Site Manager Module Name Adapter Module Site Manager Module Name Preparing an Image Enabling Netboot or Directed Netboot Site Manager Procedure You do this System respondsChoose Protocols Choose Global Protocols Configuring Netboot Services with Site Manager Adding a Netboot or Directed Netboot Interface Choose Interfaces Configuring a Netboot or Directed Netboot Interface Setting Up Routing Paths for Netboot Enabling Router Interfaces Enabling BootP Relay in a Sample Network Creating BootP Relay Agent Forwarding Tables Choose Edit CircuitChoose Protocols Choose Relay Agent Interface Table Input IP Address Output IP Address Creating the BootP Client Interface Table IP Address Dlci Number Page Chapter Configuring Netboot Client Services For This Startup Configuration Complete These Sections Using Netboot Configuration Commands Setting the Boot Configuration Using the bconfig Command FormatBconfig -d image config Bconfig image config local network TFTPhost TFTPpathname Examples of Using the bconfig Command Bconfig image network bconfig config network Setting the Netboot Interface Configuration Configuring a Serial Interface for Network BootingFr -annexd -lmi -annexa-intclk Ifconfig Command Options for a Serial Interface Configuring an Ethernet Interface for Network Booting Ifconfig Command Options for an Ethernet Interface Configuring an ARN Token Ring Interface for Network Booting Ifconfig Command Options for an ARN Token Ring Interface Enabling and Disabling Interfaces with the ifconfig Command Examples of Using the ifconfig Command Verifying Your Configuration Getcfg What to Do Next Page Chapter Managing ANH Repeater Ports Tools Choose Configuration Manager Choose Setup RepeaterEnabling and Disabling ANH Repeater Ports Choose Port Status Port ANH Port Status Window Port ANH Port Status Window Testing and Resetting ANH Repeater Ports ResetChoose Group Parameters SelftestPage Appendix a Site Manager Parameters Netboot and Directed Netboot Parameters Parameter Boot Image From NetworkParameter Boot Config From Network Parameter Boot Server Address Parameter Boot Image PathnameParameter Boot Config Pathname Netboot Interface Parameters Parameter ConnectorParameter Connector IP Address Parameter Slot Parameter Connector Subnet Mask Parameter Connector Next HopParameter Connector Protocol Mask Parameter Connector State BootP Relay Agent Interface Parameters Parameter Input IP AddressParameter Output IP Address BootP Client Interface Address Parameters Parameter IP AddressParameter Dlci Number Parameter Reset Repeater Port Group ParametersParameter Selftest Page Appendix B Troubleshooting Network Boot Problems Solving Startup Problems Upstream Router Not Receiving BootP Requests Upstream Router Not Sending BootP ResponsesRouter Fails to Get IP Address Router Fails to Netboot Router Not Sending BootP Responses BootP Server Not Sending BootP ResponsesSee Verifying the BootP Server Setup on page B-14 Router Fails to Perform Directed Netboot Router Netboots, but Fails to Load Applications Get wfDrivers.*.0 Get wfSyncEntry.*.1.connector Get wfCSMACDEntry.*.1.connectorGet wfTokenRingEntry.*.1.connector Set wfDrivers.wfTMS380Load.0 2147483648commit Identifying Remote Connectivity Problems Displaying Statistics and Error MessagesDisplaying Messages from the Router Console Guidelines for Using Packet Capture Guidelines for Using a LAN Protocol Analyzer Resolving Connectivity Problems Displaying Parameter Settings Troubleshooting Network Boot Problems Debugging the BootP Server Compare the bootptab file with the bootpd.dmp file Table B-1 BootP Messages Message Explanation Verifying the BootP Server Setup Bootptab file for an ARN should contain these entries Displaying the BootP Server IP Routes Netstat -rn grep -i -n IPaddress Get wfBootpRelayIntfEntry.*.IPaddress Displaying the Number of Packets Forwarded and DroppedQuick Get Instructions Select the following path Maintaining the Router Software Upgrading the Software Image Restoring a Local File System Setup Hints Hints and Notes Implementation Notes Appendix C Using the Quick-Start Local Boot Procedure What Is Quick-Start? Using the WorksheetsConfiguring Remote Access for AN and Passport ARN Routers Using the Quick-Start Local Boot Procedure Fill out the Global Information worksheet completelyFill out one Wide Area Protocol worksheet Global Information Worksheet Global Information WorksheetPrompt Options Your Response Using the Quick-Start Local Boot Procedure Router Protocol Worksheets RIP Worksheet Ospf Worksheet Nbma Enter a router priority value. The lower Wide Area Protocol Worksheets DCE Frame Relay Worksheet PPP Worksheet See Configuring PPP Services for Using the Quick-Start Local Boot Procedure Smds Worksheet Running the Quick-Start ScriptRequested Information Options Your Response Restart the router by entering boot Enter dir to check the contents of the flash memory cardEnter Manager to log Follow the script online Save the configuration file Task Action Details To cancel the test, type q Symbols Index Index-2 Index-3 Index-4 Index-5 Index-6 Index-7