With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
ipxCircExistState
ipx Circuit Exist State
1.3.6.1.4.1.23.2.5.2.1.1.3
value set to off may be deleted from the table at the IPX implementation's discretion.
Back to ibm-novell-ipx MIB page.
IPHost Network monitor allows you to monitor ipxCircExistState on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM computers right now.