Path Computation Model for Recovery LSPs Using External PCE
draft-ogino-pce-recovery-pc-model-00
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Author | Nagao Ogino | ||
| Last updated | 2004-10-01 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
This document proposes a PC model, where the recovery LSP route in a domain is computed using an external PCE. Recovery LSP computation that promotes bandwidth sharing between other recovery LSPs requires unreserved bandwidth information that corresponds to each failure position or SRLG. However, the present IGP-TE can only advertise unreserved bandwidth information corresponding to eight priority classes to each LSR involved in an IGP area. An external PCE in a domain can compute efficient recovery LSP routes by exclusively preserving such unreserved bandwidth information without any extension of the present IGP-TE.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)