With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
nhrpServerNbmaSubaddr
nhrp Server Nbma Subaddr
1.3.6.1.3.9999.1.3.1.1.6
The value of the NBMA subnetwork subaddress of this server. For NBMA address families without a subaddress concept, this will be a zero-length OCTET STRING.
Back to ibm-nhrp MIB page.
IPHost Network monitor allows you to monitor nhrpServerNbmaSubaddr on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM servers right now.