This document defines the model and generic mechanisms for Multiprotocol Label Switching on Frame Relay networks. Furthermore@ it extends and clarifies portions of the Multiprotocol Label Switching Architecture described in [ARCH] and the Label Distribution Protocol (LDP) described in [LDP] relative to Frame Relay Networks. MPLS enables the use of Frame Relay Switches as Label Switching Routers (LSRs).
RFC 3034-2001 history
2001RFC 3034-2001 Use of Label Switching on Frame Relay Networks Specification