ABSTRACT
GMPLS is a protocol that is applied to the TDM (time-domain multiplexing) layer, the wavelength-path layer, and the fiber layer by generalizing the label concept of MPLS that has been applied to the packet layer for transferring IP packets. GMPLS makes it possible to execute distributed control — a feature of MPLS — thereby simplifying the operation. It is also possible to totally engineer the traffic based on the traffic information or topology information of each layer and to improve the utilization efficiency of the network. In this chapter, we describe the history of the development from MPLS to MP
λS/GMPLS, provide an outline of GMPLS and its protocol, and present an application example of GMPLS.
