Managing Serviceguard Fifteenth Edition, reprinted May 2008

Building an HA Cluster Configuration
Preparing Your Systems
Chapter 5 205
The procedure that follows shows how to create a robust name-resolution
configuration that will allow cluster nodes to continue communicating
with one another if a name service fails. If a standby LAN is configured,
this approach also allows the cluster to continue to function fully
(including commands such as cmrunnode and cmruncl) after the primary
LAN has failed.
NOTE If a NIC fails, the affected node will be able to fail over to a standby LAN
so long as the node is running in the cluster. But if a NIC that is used by
Serviceguard fails when the affected node is not running in the cluster,
Serviceguard will not be able to restart the node. (For instructions on
replacing a failed NIC, see “Replacing LAN or Fibre Channel Cards” on
page 418.)