This notification signifies that the SNMP entity, acting in an agent role, has detected that one of its NHRP entities(identified by the ifIndex) has been very frequently reaching the threshold on the rate of NHRP protocol messages exchanged in an NBMA network. It is left to each individual implementation to determine the threshold frequency of this event(threshold being reached on the rate of NHRP protocol messages exchanged) which should result in a notification. The ifIndex object in this notification represents the use of a generic ifIndex which reflects a specific NBMA subnetwork related interface as determined by an implementation.