With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
xsSubnetControlTable
xs Subnet Control Table
A list of higher layer (i.e. non-MAC) Subnets\Networks table control entries. These entries will enable the collection of the network and application level subnets tables indexed by subnetwork addresses. Entries in the xsSubnetTable will be created on behalf of each entry in this table. Implementations are encouraged to add an entry per monitored interface upon initialization so that a default collection of subnet statistics is available.
Back to SMON2-MIB MIB page.
IPHost Network monitor allows you to monitor xsSubnetControlTable on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya switches right now.