The Solaris implementation of IP Network Multipathing provides the following features:
Failure Detection--Ability to detect when a network adaptor has failed and automatically switching (failover) the network access to an alternate network adaptor. This assumes that you have configured an alternate network adaptor.
Repair Detection--Ability to detect when a network adaptor that failed previously has been repaired and automatically switching back (failback) the network access to an alternate network adaptor. This assumes that you have enabled failbacks.
Outbound Load Spreading--Outbound network packets are spread across multiple network adaptors without affecting the ordering of packets in order to achieve higher throughput. Load spreading occurs only when the network traffic is flowing to multiple destinations using multiple connections.