xcmCommsStackXrefHrCommDevIndex
1.3.6.1.4.1.253.8.61.7.2.1.8
The value of 'hrDeviceIndex' corresponding to the directly
associated conceptual rows in the 'hrDeviceTable' and (possibly)
'hrNetworkTable' of the Host Resources MIB (RFC 2790), or zero
if the position of this stack layer is NOT 'bottom' (ie, this
stack layer does NOT represent a physical 'network interface').
Usage: Note that for 'hrDeviceModem', 'hrDeviceSerialPort', and
'hrDeviceParallelPort' devices, there is NO corresponding entry
in the 'hrNetworkTable', a subtle difference between MIB-II (RFC
1213) and the Host Resources MIB (RFC 2790).