Re: Comments on draft-carpenter-newtrk-questions-00.txt

Eliot Lear <lear@cisco.com> Thu, 13 July 2006 18:30 UTC

Received: from [127.0.0.1] (helo=stiedprmman1.va.neustar.com) by megatron.ietf.org with esmtp (Exim 4.43) id 1G15x4-0000rP-Un; Thu, 13 Jul 2006 14:30:18 -0400
Received: from [10.91.34.44] (helo=ietf-mx.ietf.org) by megatron.ietf.org with esmtp (Exim 4.43) id 1G15x2-0000ZH-N4 for ietf@ietf.org; Thu, 13 Jul 2006 14:30:16 -0400
Received: from sj-iport-1-in.cisco.com ([171.71.176.70] helo=sj-iport-1.cisco.com) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1G15x1-00053a-Ed for ietf@ietf.org; Thu, 13 Jul 2006 14:30:16 -0400
Received: from sj-dkim-1.cisco.com ([171.71.179.21]) by sj-iport-1.cisco.com with ESMTP; 13 Jul 2006 11:30:15 -0700
Received: from sj-core-1.cisco.com (sj-core-1.cisco.com [171.71.177.237]) by sj-dkim-1.cisco.com (8.12.11.20060308/8.12.11) with ESMTP id k6DIUEwn001373; Thu, 13 Jul 2006 11:30:14 -0700
Received: from imail.cisco.com (sjc12-sbr-sw3-3f5.cisco.com [172.19.96.182]) by sj-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id k6DIUEJi021581; Thu, 13 Jul 2006 11:30:14 -0700 (PDT)
Received: from [212.254.247.5] (ams3-vpn-dhcp4642.cisco.com [10.61.82.33]) by imail.cisco.com (8.12.11/8.12.10) with ESMTP id k6DIOC6K012867; Thu, 13 Jul 2006 11:24:13 -0700
Message-ID: <44B69133.8010704@cisco.com>
Date: Thu, 13 Jul 2006 20:30:11 +0200
From: Eliot Lear <lear@cisco.com>
User-Agent: Thunderbird 1.5.0.4 (Macintosh/20060530)
MIME-Version: 1.0
To: "Joel M. Halpern" <joel@stevecrocker.com>
References: <p06300025c0db326985f9@[142.131.134.210]> <2278C088-133C-4353-9CF1-AC47899ED409@cisco.com> <44B5EC23.6090303@cisco.com> <7.0.1.0.0.20060713072751.03d6a848@stevecrocker.com>
In-Reply-To: <7.0.1.0.0.20060713072751.03d6a848@stevecrocker.com>
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
Authentication-Results: sj-dkim-1.cisco.com; header.From=lear@cisco.com; dkim=pass ( sig from cisco.com verified; );
DKIM-Signature: a=rsa-sha1; q=dns; l=568; t=1152815415; x=1153679415; c=relaxed/simple; s=sjdkim1002; h=Content-Type:From:Subject:Content-Transfer-Encoding:MIME-Version; d=cisco.com; i=lear@cisco.com; z=From:Eliot=20Lear=20<lear@cisco.com> |Subject:Re=3A=20Comments=20on=20draft-carpenter-newtrk-questions-00.txt; X=v=3Dcisco.com=3B=20h=3DwUH2umgTbPTFTRyM2hr76iJ2NUk=3D; b=GVEjax5AdsVuLV2pHjB4upcLwK7uaafmLp9c0QlLhYK0F1HwnjOdvzeL8AEEVeAL1hQ7c+/x 8qOoGpQhrQpB4Fs47Qe3yFP29h+D+GaD/mPVVjp2kRsZoheA1TYvRN+t;
X-Spam-Score: 0.0 (/)
X-Scan-Signature: 1ac7cc0a4cd376402b85bc1961a86ac2
Cc: ietf@ietf.org
Subject: Re: Comments on draft-carpenter-newtrk-questions-00.txt
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
Errors-To: ietf-bounces@ietf.org

Joel,
> there is one useful aspect of our DS contortions.  When we do the
> work, we actually figure out which features turn out not to be used,
> and get them out of the spec.
> OSPF had ToS routing in its PS specification.  It turned out that
> there was only one implementation.
> So when the protocol was ready to advance, that feature was removed.
> Knowing that the feature was not being used proved very helpful to us
> later.

I agree, but I wonder if there is another way to accomplish the same
goal without quite the level of formalism.

Eliot

_______________________________________________
Ietf mailing list
Ietf@ietf.org
https://www1.ietf.org/mailman/listinfo/ietf