STRUCTURE OF PROTOCOL USED IN MPLS SYSTEM

摘要

PURPOSE: A structure of protocol used in an MPLS(Multi Protocol Label Switching) system is provided to simplify the structure of the protocol used in the MPLS system, so as to reduce the amount of packing processing and raise the speed by reflecting characteristics of a subscriber network. CONSTITUTION: An IP(Internet Protocol) core network is composed of a plurality of LSRs(Label Switch Routers) in charge of internal connections and a plurality of LERs(Label Edge Routers) in charge of connections between the plurality of LSRs and an external. A plurality of IP service providers are selectively connected to the plurality of LERs through specific access nodes. A plurality of clients are selectively connected to the plurality of LERs through specific access nodes. The protocol inside the IP core network is composed of an MAC(Medium Access Control), an MPLS header and an IP payload. And the IP payload includes a plurality of IP packets.