Use to specify the relative adapter number on the LCS device, or the port number on the OSA adapter.
Rules:
0 for the first Ethernet adapter in the LCS, 1 for the second Ethernet adapter, and so on.
0 for the first token ring adapter in the LCS, 1 for the second token ring adapter, and so on.
0 for the first FDDI adapter in the LCS, 1 for the second FDDI adapter, and so on.