generalized multiprotocol label switching (GMPLS)
Generalized Multiprotocol Label Switching (GMPLS) uses Multi-Protocol Label Switching(MPLS) on optical networks( ON).
GMPLS switching provides the ability to reserve end-to-end bandwidth in an optical network, even when the network uses IP traffic and synchronous transmission techniques such as Synchronous Digital Hierarchy( SDH) or Synchronous Optical Network( SONET).
In Generalized Multiprotocol Label Switching (GMPLS), the labeling mechanisms of MPLS are transferred to the optical switching components, such as add/drop multiplexers ( ADM), time division multiplexers(TDM) or optical switches. This allows resources to be allocated dynamically in optical networks as well. This signaling method is used in Automatically Switched Optical Networks( ASON), the intelligent optical networks.
The GMPLS method is standardized by the Internet Engineering Task Force( IETF) and described in RFC 3945.