With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpClientNhsInternetworkAddr
nhrp Client Nhs Internetwork Addr
The value of the destination internetwork layer address of the NHRP server represented by this entry. If this value is not known, this will be a zero-length OCTET STRING.
Back to NHRP-MIB MIB page.
IPHost Network monitor allows you to monitor nhrpClientNhsInternetworkAddr on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.