With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
lsVNChangeMACAddress
ls VN Change MAC Address
1.3.6.1.4.1.81.19.6.1
MAC Address that was detected with at a switch port and its mapping to a Virtual Network does not fit with the third layer address.
Back to APPLIC-MIB MIB page.
IPHost Network monitor allows you to monitor lsVNChangeMACAddress on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya IP phones right now.