With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
lecMulticastSendVpi
LAN Emulation Client Multicast Send Vpi
1.3.6.1.4.1.353.5.3.1.1.5.1.11
If the Multicast Send VCC exists, this object contains the VPI which identifies that VCC at the point where it connects to this LE client. Otherwise, this object has the value 0.
Back to ibm-lec MIB page.
IPHost Network monitor allows you to monitor lecMulticastSendVpi 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.