IP network multipathing (IPMP) provides physical interface failure detection and transparent network access failover for a system with multiple interfaces on the same IP link. In addition to fault tolerance, IPMP also provides load spreading of packets for systems with multiple interfaces.
The data-link configuration is done in the global zone. First, multiple data-link interfaces are assigned to a zone using zonecfg. The multiple data-link interfaces must be attached to the same IP subnet. IPMP can then be configured from within the exclusive-IP zone by the zone administrator. Multiple IPMP groups can be assigned to a given exclusive-IP zone, but those IPMP groups cannot be shared with other zones.