ATM Configuration and Troubleshooting Guide

Troubleshooting
Troubleshooting Classical IP
Chapter 9 217
Before using this flowchart you should do the following things:
Step 1. Follow the troubleshooting steps outlined in the flowchart “Checking
Network Connectivity (SVC and ARP)” on page 206.
Step 2. Look at the “Modify IP Interface” screen in SAM to confirm that the
system has been configured as an ARP client.
A Use SAM to check if the ATM address of the ARP server is
entered correctly. This should be performed on the local system.
Ensure there are no errors in the hexadecimal characters (40).
B Check that ARP server is operational and configured as an ARP
server. Run SAM on the ARP Server and confirm that it is configured
correctly as an ATM ARP Server.
C Check that the SVC to the server is open. Use this command:
atmmgr card_inst_num show -v
D Check if local IP and ATM addresses are valid. If there is
duplication of an IP address or ATM address in the LIS, the server will
not register it as a client.
E See NetTL log file for problem. Use the log file to find the source and
location of the problem and correct it.
F Use atminit. Note that atminit_net will close all SVCs opened on the
IP interface. To avoid this, you can troubleshoot the ARP server and
switches first.
G See remote system. Specifically, check the configuration on the remote
system. There could also be a malfunction with the ARP server. For HP
ATM adapters, see “Checking Network Connectivity (SVC and ARP)” on
page 206.
Checking a Local ARP Server
The flowchart for checking a local ARP client is shown in Figure 9-5
below. Each of the circled letters is described on the pages after the
flowchart.