With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
nhrpClientNbmaAddrType
nhrp Client Nbma Address Type
1.3.6.1.3.9999.1.2.1.1.4
The type of the NBMA subnetwork address of this client. This object indicates how the values of nhrpClientNbmaAddr and nhrpClientNbmaSubaddr are to be interpreted.
Back to ibm-nhrp MIB page.
IPHost Network monitor allows you to monitor nhrpClientNbmaAddrType on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM switches right now.