1. A Multiprotocol Label Switching (MPLS) method, comprising: receiving a packet destined for a destination node at a source node in an MPLS network; pushing an identifier in an MPLS label on an MPLS label stack associated with the packet, wherein the identifier denotes the source node as the source of the packet and is pushed prior to any other MPLS labels on the MPLS stack; pushing one or more labels on the MPLS stack indicative of a route of the packet to the destination node; transmitting the packet from the source node into the MPLS network; popping the identifier off the MPLS label stack at the destination node; and updating Operations, Administration, and Maintenance (OAM) data based on the identifier by any of updating byte and packet counters, updating a traffic matrix for the MPLS network; and providing the OAM data to a network management system.