Generalized Multi-Protocol Label Switching: Difference between revisions

Revision as of 12:05, 3 April 2013

Revision as of 16:11, 15 April 2013

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==Differences between MPLS and GMPLS==

Generalized MPLS differs from traditional MPLS<ref>GMPLS RFC 3945 "1.2. Multiple Types of Switching and Forwarding Hierarchies"</ref> in that it supports multiple types of switching, i.e., the addition of support for TDM, wavelength, and fiber (port) switching. For instance GMPLS is the de facto control plane of [[Wavelength Switched Optical Network (WSON)|wavelength switched optical networks]]. The support for the additional types of switching has driven GMPLS to extend certain base functions of traditional MPLS and, in some cases, to add functionality.

These changes and additions impact basic LSP properties: how labels are requested and communicated, the unidirectional nature of LSPs, how errors are propagated, and information provided for synchronizing the ingress and egress LSRs.