Nortel Networks 14.2 Router Fails to Netboot

Troubleshooting Network Boot Problems

308614-14.20 Rev 00 B-3

Router Fails to Netboot

If the AN/ANH or ARN router fails to receive the configuration file or boot image

using a netboot option, first do the following:

•Ensure that all cables between the router and the BootP server are firmly

connected.

•If using the ifconfig command, be sure to specify the boot image file

krnl_an.exe for an AN/ANH or krnl_arn.exe for an ARN.

Then, refer to the instructions in the following se ctions to find and correct the

problem:

•Upstream Router Not Receiving BootP Requests

•Router Not Sending BootP Responses

•BootP Server Not Sending BootP Responses

If you have not isolated the problem to a s pecific interface, retrieve the number of

BootP packets forwarded and dropped from all routers between the AN/ANH or

ARN router and the BootP server. See “Displaying the Number of Packets

Forwarded and Dropped” on pageB-16.

If you perform the instructions in these sections and cannot find and correct the

problem, contact the Nortel Networks Technical Solutions Center.

Upstream Router Not Receiving BootP Requests

If the upstream router is not receiving BootP requests, do the following:

1. Issue the Technician Interface getcfg command to display the router

parameters and the bconfig or ifconfig command to correct them, if

necessary.

For instructions, see “Displaying Parameter Settin gs” on page B-10 and

“Debugging the BootP Server” on pageB-12.

2. Ensure that the router’s netboot interface is cabled prope rly.

For EZ-Install, ensure that the synchronous port is cabled to the upstream

router. For Netboot or Directed Netboot, ensure that the configured

synchronous, Ethernet, or ARN token ring interface is cabled to the IP

network.

Contents

Main ii Copyright 1999 Nortel Networks Trademarks Restricted Rights Legend Statement of Conditions Nortel Networks NA Inc. Software License Agreement iv Contents Page Page Page Figures Page Tab le s Page Preface Before You Begin Text Conventions Acronyms Page Hard-Copy Technical Manuals How to Get Help Chapter 1 Understanding Tools and Options Network Configuration and Management Tools Router Startup Procedure Startup Files Startup Options 1-4 Table1-2 . Summary of Startup Opti ons for AN/ANH and ARN Routers The Boot Process Obtaining an IP Address Manually (Netboot or Directed Netboot) Obtaining an IP Address Automatically (EZ-Install) Page Page Page Obtaining the Kernel and Configuration Files Page Page Page Preparing for the Initial Startup Selecting the Initial Startup Option Page Providing a Tailored Configuration File Selecting the Routine Startup Option Recommendations Netboot Directed Netboot Local Boot Steps for Completing Startup Options EZ-Install Netboot Directed Netboot Local Boot Chapter 2 Setting Up a UNIX Boot Server Setting Up a BootP Server Setting Up BootP Sockets Configuring BootPD Page Page Page 2-6 Table2-1. BootPD Tags for a Router Host Name Table2-2. BootPD Tags for a Kernel File Name rel<number> (continued) Page (continued) 2-8 Figure 2-1. Sample bootptab File Setting Up a TFTP Server Setting Up TFTPD Page Setting Up Static Routes to Next-Hop Routers Rebooting Your Workstation Issuing a Hang-Up Signal What to Do Next Page Chapter 3 Configuring Netboot Services with Site Manager Complete the appropriate sections of this chapter for the startup option you are configuring: Preparing Configuration and Image Files Creating Configuration Files Tabl e 3-1 lists the mnemonics used in AN and ANH module names. Table3-1. Configuration Manager Module Names for AN and ANH Table3-2. ARN Base Module Configurations Page Preparing an Image Enabling Netboot or Directed Netboot Page Adding a Netboot or Directed Netboot Interface Configuring a Netboot or Directed Netboot Interface You can use Site Manager to configure a Netboot or Directed Netboot interface. receive a reply from the BootP server will complete the Netboot process. Note: If you configure more than one interface to Netboot, the first interface to Setting Up Routing Paths for Netboot Enabling Router Interfaces Page Creating BootP Relay Agent Forwarding Tables You can use Site Manager to create the BootP relay agent forwarding table. Creating the BootP Client Interface Table You can use Site Manager to create the BootP client interface table. Page Chapter 4 Configuring Netboot Client Services Using Netboot Configuration Commands Setting the Boot Configuration Using the bconfig Command Format Examples of Using the bconfig Command Setting the Netboot Interface Configuration Configuring a Serial Interface for Network Booting 4-6 Table4-2. ifconfig Command Options for a Serial Interface <subnet_mask> <IP_address> <port_no.> Configuring an Ethernet Interface for Network Booting <next_hop_address> <IP_address> <subnet_mask> <interface> Note: The Ethernet interface must be configured with IP to support netboot Configuring an ARN Token Ring Interface for Network Booting Enabling and Disabling Interfaces with the ifconfig Command Examples of Using the ifconfig Command Verifying Your Configuration What to Do Next Page Page 5-2 Enabling and Disabling ANH Repeater Ports You can use Site Manager to enable or disable the ANH repeater ports. Page Page Managing ANH Repeater Ports Testing and Resetting ANH Repeater Ports You can use Site Manager to test and reset ANH repeater ports. Note: The repeater port self-test does not disrupt traffic flow. Resetting a Page Appendix A Site Manager Parameters Netboot and Directed Netboot Parameters Page Netboot Interface Parameters Page Page BootP Relay Agent Interface Parameters BootP Client Interface Address Parameters Repeater Port Group Parameters Page Appendix B Troubleshooting Network Boot Problems Solving Startup Problems Router Fails to Get IP Address Router Fails to Netboot Page Router Fails to Perform Directed Netboot Router Netboots, but Fails to Load Applications Page Page Identifying Remote Connectivity Problems Displaying Messages from the Router Console Displaying Statistics and Error Messages Guidelines for Using Packet Capture Guidelines for Using a LAN Protocol Analyzer Resolving Connectivity Problems Displaying Parameter Settings Page Debugging the BootP Server Troubleshooting Network Boot Problems 3. Compare the bootptab file with the sample bootptab file in Chapter 2 /etc (see Figure2-1 on page 2-8) and correct any inconsistency. 4. If you cannot find an inconsistency, boot the router and view the bootpd Table B-1. BootP Messages Verifying the BootP Server Setup Displaying the BootP Server IP Routes Displaying the Number of Packets Forwarded and Dropped Maintaining the Router Software Upgrading the Software Image Restoring a Local File System Hints and Notes Setup Hints Implementation Notes Appendix C Using the Quick-Start Local Boot Procedure What Is Quick-Start? Using the Worksheets Page C-4 Global Information Worksheet Global Information Worksheet Global Information Worksheet C-6 Global Information Worksheet startup.cfg Router Protocol Worksheets RIP Worksheet (continued) OSPF Worksheet C-8 OSPF Worksheet Wide Area Protocol Worksheets C-10 Nortel Networks Proprietary PPP Worksheet Frame Relay Worksheet PPP Worksheet C-12 PPP Worksheet Configuring PPP Services (continued) Running the Quick-Start Script Page Page Page Index Symbols A B Index-2 C D E F G H I K L M N O P Q R S T U