http://www.rfc-editor.org/rfc/rfc4205.txt
RFC 4205: Intermediate System to Intermediate System (IS-IS) Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS), K. Kompella, Y. Rekhter2005-10-01T23:00:00-00:00This document specifies encoding of extensions to the IS-IS routing protocol in support of Generalized Multi-Protocol Label Switching (GMPLS). This memo provides information for the Internet community.