13 Multiprotocol Label Switching
Martin Reed
University of Essex
Introduction
Multiprotocol Label Switching (MPLS) is a methodology of controlling switched networks that has been designed to be compatible with IP networks. This is unlike many other switched-network solutions that have been developed separately from IP and that interoperate with variable degrees of success. This chapter starts by introducing the MPLS architecture, which includes the components and the methodology of switching to create a Label Switch Path (LSP). The architecture is supported by signaling that sets up the LSP. The signaling is fairly complex because there are a number of LSP signaling protocols; therefore, only an overview of the main protocols is presented ...
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