Generalized Labels of Lambda-Switching Capable Label Switching Routers (LSR)

Document Type Expired Internet-Draft (individual)
Authors Tomohiro Otani  , Hongxiang Guo  , Keiji Miyazaki  , Diego Caviglia  , Zafar Ali 
Last updated 2008-02-25
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Technology in the optical domain is constantly evolving and as a consequence new equipment providing lambda switching capability has been developed and is currently being deployed. However, RFC 3471 has defined that a wavelength label (section "only has significance between two neighbors" and global wavelength continuity is not considered. In order to achieve interoperability in a network composed of next generation lambda switch-capable equipment, this document defines a standard lambda label format, being compliant with ITU-T G.694. Moreover some consideration on how to ensure lambda continuity with RSVP-TE is provided. This document is a companion to the Generalized Multi-Protocol Label Switching (GMPLS) signaling. It defines the label format when Lambda Switching is requested in an all optical network.


Tomohiro Otani (
Hongxiang Guo (
Keiji Miyazaki (
Diego Caviglia (
Zafar Ali (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)