With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpClientStatRxErrProtoAddrUnreachable
nhrp Client Stat Rx Err Proto Addr Unreachable
1.3.6.1.3.9999.1.2.3.1.18
The number of NHRP Error Indication packets received by this client with the error code 'Protocol Address Unreachable'. Discontinuities in the value of this counter can occur at re-initialization of the management system, at NHRP Client re-initialization and at other times as indicated by the value of nhrpClientStatDiscontinuityTime.
Back to NHRP-MIB MIB page.
IPHost Network monitor allows you to monitor nhrpClientStatRxErrProtoAddrUnreachable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
