By probing the standard MIB-II tables on a host that employs a teamed NIC, the IP Manager discovers the logical NIC, but does not discover the physical NIC information that it needs to create the Layer 2 connectivity between the host and the neighboring switch or switches. To collect the physical NIC information, the IP Manager probes the enterprise MIBs on the host.
The collected physical NIC information contains the burned-in MAC (BIM) for each of the teamed-NIC access ports. A BIM uniquely identifies a teamed-NIC access port. As an aside, a teamed-NIC access port is not uniquely identified in the MIB-II tables; instead, in the MIB-II tables, all of the teamed-NIC access ports are identified by the same logical MAC address.
By using the collected physical NIC information, the IP Manager creates an instance of the NetworkAdapterRedundancyGroup to represent the logical grouping of the physical NICs. Doing so enables the IP Manager to create the Layer 2 cable connections between the host and the neighboring switch or switches.