Managing Serviceguard 12th Edition, March 2006

Troubleshooting Your Cluster
Troubleshooting Approaches
Chapter 8 379
lanscan can also be used to examine the LAN configuration. This
command lists the MAC addresses and status of all LAN interface
cards on the node.
arp -a can be used to check the arp tables.
landiag is useful to display, diagnose, and reset LAN card
information.
linkloop verifies the communication between LAN cards at MAC
address levels. For example, if you enter
# linkloop -i4 0x08000993AB72
you should see displayed the following message:
Link Connectivity to LAN station: 0x08000993AB72 OK
cmscancl can be used to verify that primary and standby LANs are
on the same bridged net.
cmviewcl -v shows the status of primary and standby LANs.
Use these commands on all nodes.