A new probe-based failure detection mode for Datalink Multipathing (DLMP) helps to identify failures between the host and any configured targets. This detection mode is in addition to the existing link-based detection that assists in detecting failures caused by the loss of direct connection between the datalink and the first-hop switch.
For more information, see Failure Detection in DLMP Aggregation in Managing Network Datalinks in Oracle Solaris 11.2 .