With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
nhrpCachePrefixLength
nhrp Cache Prefix Length
The number of bits that define the internetwork layer prefix associated with the nhrpCacheInternetworkAddr.
Back to NHRP-MIB MIB page.
IPHost Network monitor allows you to monitor nhrpCachePrefixLength 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.
