A pimNeighborLoss trap signifies the loss of an adjacency with a neighbor. This trap should be generated when the neighbor timer expires, and the router has no other neighbors on the same interface with a lower IP address than itself.
1.3.6.1.3.61.1.0.1
Trap : pimNeighborLoss
Objects : { pimNeighborIfIndex }
OID : "1.3.6.1.3.61.1.0.1"
object : pimNeighborIfIndex type : InterfaceIndex