[tcpm] Accurate ECN side-meeting

"Scheffenegger, Richard" <rs@netapp.com> Mon, 30 July 2012 20:32 UTC

Return-Path: <rs@netapp.com>
X-Original-To: tcpm@ietfa.amsl.com
Delivered-To: tcpm@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7692411E8179 for <tcpm@ietfa.amsl.com>; Mon, 30 Jul 2012 13:32:44 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.121
X-Spam-Level:
X-Spam-Status: No, score=-10.121 tagged_above=-999 required=5 tests=[AWL=0.477, BAYES_00=-2.599, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oJiU43Up3sfx for <tcpm@ietfa.amsl.com>; Mon, 30 Jul 2012 13:32:43 -0700 (PDT)
Received: from mx2.netapp.com (mx2.netapp.com [216.240.18.37]) by ietfa.amsl.com (Postfix) with ESMTP id 7A4E911E816F for <tcpm@ietf.org>; Mon, 30 Jul 2012 13:32:43 -0700 (PDT)
X-IronPort-AV: E=Sophos; i="4.77,681,1336374000"; d="scan'208,217"; a="669782934"
Received: from smtp1.corp.netapp.com ([10.57.156.124]) by mx2-out.netapp.com with ESMTP; 30 Jul 2012 13:32:43 -0700
Received: from vmwexceht03-prd.hq.netapp.com (vmwexceht03-prd.hq.netapp.com [10.106.76.241]) by smtp1.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id q6UKWhCQ010868 for <tcpm@ietf.org>; Mon, 30 Jul 2012 13:32:43 -0700 (PDT)
Received: from SACEXCMBX02-PRD.hq.netapp.com ([169.254.1.34]) by vmwexceht03-prd.hq.netapp.com ([10.106.76.241]) with mapi id 14.02.0298.004; Mon, 30 Jul 2012 13:32:43 -0700
From: "Scheffenegger, Richard" <rs@netapp.com>
To: "tcpm (tcpm@ietf.org)" <tcpm@ietf.org>
Thread-Topic: Accurate ECN side-meeting
Thread-Index: Ac1ukMIzB6G1AClqT3iwdJIUpoFdAg==
Date: Mon, 30 Jul 2012 20:32:41 +0000
Message-ID: <012C3117EDDB3C4781FD802A8C27DD4F0D4DA610@SACEXCMBX02-PRD.hq.netapp.com>
Accept-Language: de-AT, en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.104.60.116]
Content-Type: multipart/alternative; boundary="_000_012C3117EDDB3C4781FD802A8C27DD4F0D4DA610SACEXCMBX02PRDh_"
MIME-Version: 1.0
Subject: [tcpm] Accurate ECN side-meeting
X-BeenThere: tcpm@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: TCP Maintenance and Minor Extensions Working Group <tcpm.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tcpm>, <mailto:tcpm-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tcpm>
List-Post: <mailto:tcpm@ietf.org>
List-Help: <mailto:tcpm-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tcpm>, <mailto:tcpm-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 30 Jul 2012 20:32:44 -0000

Hi,

Since there was virtually no time for discussion today in the TCPM meeting, who would be interested in (and have time for) a side meeting to discuss further on the Accurate ECN topic?


For me, it became apparent that the problems and requirements statement are not too well understood so far (and I'm not excluding myself).

Currently, we have feedback with perfect Reliability (getting one signal per RTT, with a simple handshake mechanism).

Ack loss (or delayed ACKs with more than than 2 data packets) presents another problem,...



I think Matt has a very valid point that the solution space needs more discussions, ideally from more participants than only between the authors!



Richard Scheffenegger