GMPLS Features

The JUNOS Software includes the following GMPLS functionality:

• An out-of-band control plane makes it possible to signal LSP path setup.
• RSVP-TE extensions support additional objects beyond Layer 3 packets, such as ports, time slots, and wavelengths.
• The LMP protocol creates and maintains a database of traffic engineering links and peer information. Only the static version of this protocol is supported in the JUNOS Software. You can optionally configure LMP to establish and maintain LMP control channels between peers running the same JUNOS Software release.
• Bidirectional LSPs are required between devices.
• Several GMPLS label types that are defined in RFC 3471, Generalized
  MPLS—Signaling Functional Description, such as MPLS, Generalized, SONET/SDH, Suggested, and Upstream, are supported. Generalized labels do not contain a type field, because the nodes should know from the context of their connection what type of label to expect.
• Traffic parameters facilitate GMPLS bandwidth encoding and SONET/SDH formatting.
• Other supported attributes include interface identification and errored interface identification, user-to-network (UNI)-style signaling, and secondary LSP paths.