RE: I-D ACTION:draft-ash-multi-area-te-reqmts-01.txt

[Jim Boyle <jboyle@pdnets.com>]

Hello, hello, there appears to be an echo in here.
One list please, as this is a discussion of requirements, I'll reply
just to the tewg list.

cheers,

Jim


On Mon, 3 Dec 2001, Ash, Gerald R (Jerry), ALCTA wrote:

> We would like to call for agreement that
>
> a) draft-ietf-tewg-restore-hierarchy-00.txt calls for multi-area TE
> requirements to be generated, but contains no such requirements (Section 3
> says "requirements for multi-area traffic engineering need to be developed
> to provide guidance for any necessary protocol extensions"), and
> b) draft-ash-multi-area-te-reqmts-01.txt be adopted as a multi-area TE
> requirements draft.
>
> In addition, Section 6.3 of draft-ietf-tewg-restore-hierarchy-00.txt says
> "To support edge-to-edge signaling in the above network scenarios within the
> framework of existing horizontal hierarchies, current traffic engineering
> (TE) methods [19, 5] may need to be extended. Requirements for multi-area TE
> need to be developed to provide guidance for any necessary protocol
> extensions."
>
> In regard to 'necessary protocol extensions', there are numerous multi-area
> TE approaches, so there is a need to converge on one or a subset of the
> approaches (rather than support them all).
> draft-ash-multi-area-te-rqmts-01.txt summarizes what protocol extensions
> have been proposed by various multi-area TE drafts, including:
> http://search.ietf.org/internet-drafts/draft-kompella-mpls-multiarea-te-02.t
> xt
> http://search.ietf.org/internet-drafts/draft-venkatachalam-interarea-mpls-te
> -02.txt
> http://search.ietf.org/internet-drafts/draft-vasseur-mpls-computation-rsvp-0
> 0.txt
> http://www.ietf.org/internet-drafts/draft-lee-mpls-path-request-02.txt
> http://www.ietf.org/internet-drafts/draft-iwata-mpls-crankback-02.txt.
>
> draft-ash-multi-area-te-rqmts-01.txt also compares the
> advantages/disadvantages of each proposed multi-area TE method, and how well
> the method meets the proposed requirements.  The analysis can be used to
> focus discussion and to select among the approaches.
>
> In summary, we would like to hear any objections to adopting
> draft-ash-multi-area-te-rqmts-01.txt as a multi-area TE requirements draft.
>
> Thanks,
> Jerry Ash
>
>
> -----Original Message-----
> From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org]
> Sent: Friday, November 30, 2001 6:00 AM
> To: IETF-Announce; @wsscan.att.com
> Subject: I-D ACTION:draft-ash-multi-area-te-reqmts-01.txt
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
> 	Title		: Requirements for Multi-Area TE
> 	Author(s)	: J. Ash et al.
> 	Filename	: draft-ash-multi-area-te-reqmts-01.txt
> 	Pages		: 16
> 	Date		: 29-Nov-01
>
> This draft describes requirements for multi-area TE within the context of
> GMPLS.  Based on the requirements, the goal is to eventually provide
> protocol extensions needed for multi-area TE.  Various approaches to
> multi-area TE are considered, and these approaches are evaluated against the
> requirements.  These approaches include state dependent routing (SDR) LSP
> selection, event dependent routing (EDR) LSP selection, and time dependent
> routing (TDR) LSP selection.  These approaches include needs to support
> path-computation server (PCS) functionality, query functionality, crankback
> functionality, TE feedback functionality, and summary-LSA functionality. The
> target in future releases of this document will be to converge on a reduced
> subset of the required multi-area TE methods and protocol
> extensions.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ash-multi-area-te-reqmts-01.txt
>
>