With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpServerInternetworkAddrType
nhrp Server Internetwork Addr Type
1.3.6.1.3.9999.1.3.1.1.2
The type of the internetwork layer address of this server. This object is used to interpret the value of nhrpServerInternetworkAddr.
Back to NHRP-MIB MIB page.
IPHost Network monitor allows you to monitor nhrpServerInternetworkAddrType 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.