Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt

Jeffrey Haas <jhaas@pfrc.org> Tue, 14 March 2017 22:52 UTC

Return-Path: <jhaas@slice.pfrc.org>
X-Original-To: idr@ietfa.amsl.com
Delivered-To: idr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 33814131614 for <idr@ietfa.amsl.com>; Tue, 14 Mar 2017 15:52:46 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.003
X-Spam-Level:
X-Spam-Status: No, score=-0.003 tagged_above=-999 required=5 tests=[RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vofwghy9i362 for <idr@ietfa.amsl.com>; Tue, 14 Mar 2017 15:52:45 -0700 (PDT)
Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id E9F9C131626 for <idr@ietf.org>; Tue, 14 Mar 2017 15:52:44 -0700 (PDT)
Received: by slice.pfrc.org (Postfix, from userid 1001) id 842E41E33B; Tue, 14 Mar 2017 18:58:55 -0400 (EDT)
Date: Tue, 14 Mar 2017 18:58:55 -0400
From: Jeffrey Haas <jhaas@pfrc.org>
To: Robert Raszuk <robert@raszuk.net>
Cc: Job Snijders <job@instituut.net>, "Rajiv Asati (rajiva)" <rajiva@cisco.com>, idr wg <idr@ietf.org>
Message-ID: <20170314225855.GN12864@pfrc.org>
References: <CA+b+ERnBL9Q3ep1JrC9HQp3B3AYmiQ8ctTssK1g4L_ueTTRaMQ@mail.gmail.com> <CA+b+ER=cZiBfWj4=+uKeqsWwypGFz3p+Tvx8Q2dD3hFFXSC4=w@mail.gmail.com> <CA+b+ER=f-S118JtY--n-B0P+CB0yvy_rw3JaJpWw02n7prQ=Ww@mail.gmail.com> <20170314204212.GD12864@pfrc.org> <815723FC-B143-4410-B0FF-D9FB4F827862@cisco.com> <20170314213607.GH12864@pfrc.org> <20170314214832.s3k37p27y7xfpfsv@Vurt.local> <CA+b+ERmLDNzF=TofW=w1OwUzeLGUc-3muMckHTH6Rs=c8rc5bQ@mail.gmail.com> <20170314223333.bw3caxfn34y6zlb7@Vurt.local> <CA+b+ERmMOyqb8HFtNXyDr8e+MNxA7EWmJFukUNgSjAU+69f5CA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CA+b+ERmMOyqb8HFtNXyDr8e+MNxA7EWmJFukUNgSjAU+69f5CA@mail.gmail.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/xuDbzaSUXBAxdLCotdBFSpbFzFs>
Subject: Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt
X-BeenThere: idr@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Inter-Domain Routing <idr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/idr>, <mailto:idr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/idr/>
List-Post: <mailto:idr@ietf.org>
List-Help: <mailto:idr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/idr>, <mailto:idr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 14 Mar 2017 22:52:46 -0000

On Tue, Mar 14, 2017 at 11:46:45PM +0100, Robert Raszuk wrote:
> And just for the record here the idea for NH SAFI has been proposed by Ilya
> & myself in 2012 ...
> 
> https://tools.ietf.org/html/draft-ietf-idr-bgp-nh-cost-00

rs-bfd started with that as a likely way to handle carrying the RS state.
However, we reached two conclusions:
- the draft was inactive.
- and even if we used it, it was an awkward fit for the mechanism.

https://www.ietf.org/proceedings/93/slides/slides-93-idr-3.pdf

Similarly, BGP-LS was given a try and decided to be too heavy weight.

So, we're closer to where we started. :-)

-- Jeff