Subject: RE: [Pce] I-D ACTION:draft-ietf-pce-disco-proto-igp-01.txt

From: "LE ROUX Jean-Louis RD-CORE-LAN" <[email-masked]>
Date: Thu, 9 Mar 2006 14:02:35 +0100

Hi all,

Here are the major changes in this new revision of the IGP-based PCE discovery ID:

-Clarified the definition and applicability of PCE preferences
(in the PATH-SCOPE TLV).
-Added protocol elements and procedures for discovery of PCE Congestion Status. A new TLV is defined, the PCES (PCE Status) TLV to be carried within the ISIS Cap TLV and OSPF RI LSA. It allows advertising when a PCE enters or leaves a processing congestion state. Procedures to avoid any impact on the IGP scalability (dampening, hysterisis, congestion duration) are discussed.
-Some rewordings for the sake of clarity
-Added a new co-author

Your comments on this new revision are required.

Regards,

JL

> -----Message d'origine-----
> De : [email-masked] [mailto:[email-masked]] 
> Envoyé : lundi 6 mars 2006 08:50
> À : [email-masked]
> Cc : [email-masked]
> Objet : [Pce] I-D ACTION:draft-ietf-pce-disco-proto-igp-01.txt 
> 
> A New Internet-Draft is available from the on-line 
> Internet-Drafts directories.
> This draft is a work item of the Path Computation Element 
> Working Group of the IETF.
> 
> 	Title		: IGP protocol extensions for Path 
> Computation Element (PCE) Discovery
> 	Author(s)	: J. Le Roux, et al.
> 	Filename	: draft-ietf-pce-disco-proto-igp-01.txt
> 	Pages		: 32
> 	Date		: 2006-3-5
> 	
> There are various circumstances in which it is highly 
> desirable for a Path Computation Client (PCC) to be able to 
> dynamically and automatically discover a set of Path 
> Computation Element(s) (PCE), along with some of information 
> that can used for PCE selection. When the PCE is an LSR 
> participating to the IGP, or even a server participating 
> passively to the IGP, a simple and efficient way for PCE 
> discovery consists of relying on IGP flooding. For that 
> purpose this document defines OSPF and ISIS extensions for 
> the advertisement of PCE Discovery information within an IGP 
> area or the entire routing domain.
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-pce-disco-proto
> -igp-01.txt
> 
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