With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpClientStatRxResolveReplyAck
nhrp Client Stat Rx Resolve Reply Ack
1.3.6.1.3.9999.1.2.3.1.2
The number of positively acknowledged NHRP Resolution Replies received by this client. 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 nhrpClientStatRxResolveReplyAck on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.