A system can provide a unified quality-of-service for multi-path label switching (MPLS) traffic. A single network device can be configured as an ingress label switch router, an egress label switch router or a label switching router for different label switching paths. The network device can support uniform deployment model, pipe deployment model or short-pipe deployment model in any configuration. A configurable scheduler priority map can be selected from multiple scheduler priority maps to generate a scheduler priority class which can be used to assign priority and resources for the packet.