Uttarakhand Technical University
MultiProtocol Label Switching (MPLS) is an IETF standard that merges layer 2 and layer 3 protocol that uses label switching in the core network, thus reduces the workout of looking the routing table overhead. MPLS is a traffic switching technology that combines the traffic engineering capability of Asynchronous Transfer Mode (ATM) with flexibility and scalability of Internet Protocol (IP). This enables fast packet transfer over the network. MPLS establishes a connection-oriented mechanism into a connectionless IP network. MPLS uses short, length-fixed, locally significant labels in the packet header between layer 2 and layer 3 header and the packets are forwarded according to label rather than by routing protocol in the core of network.