RFC - 4874
Exclude Routes - Extension to Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)
| Original: | ftp://ftp.isi.edu/in-notes/rfc4874.txt |
|---|---|
| Authors: | CY. Lee [Old Dog Consulting], A. Farrel [Old Dog Consulting], S. De Cnodder [Alcatel-Lucent] |
| Date: | April 2007 |
| Category: | Proposed Standard |
| Updates: | |
|---|---|
| RFC-3473prop | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions (Updated by RFC-4783prop, RFC-4420prop, RFC-4201prop, RFC-4003prop, RFC-4874prop, RFC-4873prop) |
| RFC-3209prop | RSVP-TE: Extensions to RSVP for LSP Tunnels (Updated by RFC-4420prop, RFC-3936, RFC-4874prop) |
| Referred by: | 2 RFC |
| Refers to: | 11 RFC |
Status
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document specifies ways to communicate route exclusions during path setup using Resource ReserVation Protocol-Traffic Engineering (RSVP-TE).
The RSVP-TE specification, "RSVP-TE: Extensions to RSVP for LSP Tunnels" (RFC 3209) and GMPLS extensions to RSVP-TE, "Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions" (RFC 3473) allow abstract nodes and resources to be explicitly included in a path setup, but not to be explicitly excluded.
In some networks where precise explicit paths are not computed at the head end, it may be useful to specify and signal abstract nodes and resources that are to be explicitly excluded from routes. These exclusions may apply to the whole path, or to parts of a path between two abstract nodes specified in an explicit path. How Shared Risk Link Groups (SRLGs) can be excluded is also specified in this document.
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prepared by Miloslav Nic
- the founder of Zvon.org and Law-Ref.org
- the head of B.Sc. program Informatics and chemistry [in Czech]
- the founder of Lidem.org - Volby 2006 - parliamentary elections in the Czech Republic [in Czech]
- the chief consultant of the publishing house ICT Press
- and Pavel Srb, a student of B.Sc. program Informatics and chemistry