With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
nhrpNextHopResEntry
nhrp Next Hop Resolution Entry
1.3.6.1.3.9999.1.1.1.1
A cached mapping between an internetwork layer address and an NBMA address. Entries can be created by the network administrator using the nhrpNextHopResRowStatus column, or they may be added dynamically based on protocol operation (including NHRP, SCSP, and others such as ATMARP).
Back to ibm-nhrp MIB page.
IPHost Network monitor allows you to monitor nhrpNextHopResEntry on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM storage servers right now.