Link-based IPMP on Solaris 10
However if you are running Solaris 10 and you have a NIC that supports it you can use link-based IPMP. Link-based failure detection works by the NIC driver monitoring the link state and notifying the network subsystem in case of a failure.
The great thing about this is it does not need a test address and the setup of IPMP is very simple. For example if I have two interfaces (qfe0 and qfe4) that I want to operate in a active-standby configuration, all that would need to be done is create the two files below in /etc.
hostname.qfe0
hostname group groupname up
hostname.qfe4
group groupname up
That's it! Now you have failover for all IP addresses, including virtual, on qfe0. Also if you have zones set up with qfe0 as a physical interface the zone's IP addresses will now also failover
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