pagpGroupIfIndex 1.3.6.1.4.1.9.9.98.1.1.1.1.8

If pagpGroupIfIndex is 0, then the inteface is not aggregated to an agport, and is unavailable for normal data reception and transmission. If pagpGroupIfIndex equals the interface's own ifIndex, the interface is aggregated to itself, and behaves as a single interface (as if there were no Fast Etherchannel or PAgP). If pagpGroupIfIndex has any other value, then it must contain the ifIndex of an agport, and the interface is aggregated to that agport. The ifType of an agport is propVirtual(53).