HP Servicecontrol Manager 3.0 Troubleshooting Guide

Operating System and Networking Issues
Hardware Problems (Such As LAN Card Failures)
Chapter 2
14
Hardware Problems (Such As LAN Card Failures)
Symptom You experience intermittent networking or communication errors with a system on the
network. This assumes you are experiencing the errors between the CMS and a single
managed node. If you think the CMS is the system having the problem, perform these
steps with the CMS and managed node reversed.
Verification 1. Log on to the CMS.
2. Ping the managed node:
•For HP-UX: /usr/sbin/ping
node_name
• For Linux: /bin/ping node_name
where node_name is the hostname of the managed node in question.
If this fails to establish communication with the node, then there is a LAN
communication problem.
3. Execute:
•For HP-UX: /usr/sbin/arp
node_name
• For Linux: /sbin/arp node_name
where node_name is the hostname of the managed node in question.
If the ethernet address does not appear to be valid, you may have a failing LAN card.
Fix 1. Log on to the managed node as root.
2. Remove the cached ethernet address and force the address to be looked up again:
•For HP-UX: /usr/sbin/arp -d
node_name
• For Linux: /sbin/arp -d node_name
where node_name is the hostname of the managed node in question.
3. Verify that the ethernet address now appears to be valid:
•For HP-UX: /usr/sbin/arp
node_name
• For Linux: /sbin/arp node_name
where node_name is the hostname of the managed node in question.
You should now quit receiving the networking errors on the managed node.
4. Log on to the CMS and execute:
•For HP-UX: /usr/sbin/ping
node_name
• For Linux: /bin/ping node_name
This should now trade packets properly.
If this fixes the problem, it will only be a temporary fix. You need to replace the LAN
card in the managed node.