The value of tApsMcHoldTime specifies how much time can pass, in 100s
of milliseconds, without receiving an advertise packet from the
neighbor before the Multi-Chassis signaling link is considered not
operational. It is usually 3 times the value of
tApsMcAdvertiseInterval. The value of tApsMcAdvertiseInterval is valid
only for a Multi-Chassis APS as indicated by the value of
tApsMcNeighborAddr not set to 0.0.0.0.