System Administration Guide: IP Services

Detecting Physical Interface Repairs

For the in.mpathd daemon to consider an interface to be repaired, the RUNNING flag must be set for the interface. If probe-based failure detection is used, the in.mpathd daemon must receive responses to 10 consecutive probe packets from the interface before that interface is considered repaired. When an interface is considered repaired, any addresses that failed over to another interface then fail back to the repaired interface. If the interface was configured as “active” before it failed, after repair that interface can resume sending and receiving traffic.