Encoding of Objective Functions in Path Computation Element (PCE) communication and discovery protocols
draft-leroux-pce-of-01
| Document | Type |
Replaced Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Author | Jean-Louis Le Roux | ||
| Last updated | 2011-01-10 (Latest revision 2007-07-11) | ||
| Replaced by | draft-ietf-pce-of | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Replaced by draft-ietf-pce-of | |
| 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This Internet-Draft is no longer active.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
The computation of one or a series of Traffic Engineering Label Switched Paths (TE LSP) in MultiProtocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks, is subject to a set of one or more specific optimization criteria(s), referred to as an objective function (e.g. minimum cost path, widest path, etc.). A Path Computation Element (PCE) may support one or multiple objective functions, and it is desired for a Path Computation Client (PCC) to automatically discover the set of objective functions supported by a PCE. Furthermore, it may be useful for a PCC to specify in a path computation request the required objective function used by the PCE to compute a TE LSP or a set of TE LSPs. Thus the aim of this document is to define extensions to the PCE Discovery (PCED) TLV carried within the IS-IS Router Capability TLV and the OSPF Router Information LSA so as to allow a PCC to discover the set of objective functions supported by a PCE. Extensions to the PCE communication Protocol (PCEP) are also specified allowing a PCC to indicate in a path computation request the required objective function and a PCE to indicate in a path computation reply the objective function actually applied.
Authors
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