With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpServerStatDiscontinuityTime
nhrp Server Stat Discontinuity Time
The value of sysUpTime on the most recent occasion at which any one or more of this Server's counters suffered a discontinuity. If no such discontinuities have occurred since the last re-initialization of the local management subsystem or the NHRP Server re-initialization associated with this entry, then this object contains a zero value.
Back to NHRP-MIB MIB page.
IPHost Network monitor allows you to monitor nhrpServerStatDiscontinuityTime 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.