This value is a unique index for the per-NLRI entry in the dellNetBgpM2PathAttrTable. It is assigned by the agent at the point of creation of the dellNetBgpM2PathAttrTable row entry. While its value is guaranteed to be unique at any time, it is otherwise opaque to the management application with respect to its value or the contiguity of dellNetBgpM2PathAttrIndex row instance values across rows of the dellNetBgpM2PeerAttrTable. It is used to provide an index structure for other tables whose data is logically per-peer, per-NLRI.