Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?

Derek Fawcus <dfawcus+lists-int-area@employees.org> Wed, 09 June 2021 13:57 UTC

Return-Path: <dfawcus@employees.org>
X-Original-To: pals@ietfa.amsl.com
Delivered-To: pals@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0419B3A17EB; Wed, 9 Jun 2021 06:57:08 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.898
X-Spam-Level:
X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=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 onQ5Y2W3ylAo; Wed, 9 Jun 2021 06:57:03 -0700 (PDT)
Received: from clarinet.employees.org (clarinet.employees.org [IPv6:2607:7c80:54:3::74]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8A4423A17E7; Wed, 9 Jun 2021 06:57:03 -0700 (PDT)
Received: by clarinet.employees.org (Postfix, from userid 1736) id 476F64E11B67; Wed, 9 Jun 2021 13:57:02 +0000 (UTC)
Date: Wed, 9 Jun 2021 14:57:02 +0100
From: Derek Fawcus <dfawcus+lists-int-area@employees.org>
To: James Bensley <jwbensley+pals@gmail.com>
Cc: pals@ietf.org, intarea IETF list <int-area@ietf.org>
Message-ID: <YMDIrkR/ekhMZi2K@clarinet.employees.org>
References: <5c60cc79-1552-3f52-641f-e508780227ae@bobbriscoe.net> <YLuFLq7k9akVVHWS@clarinet.employees.org> <CAA=duU2o9YKF5Sfu6VTr5+bUr1JVgaGZh=X4+BQRbMu63FqVsg@mail.gmail.com> <5E252602-F635-4DF0-8FAE-C80CF88293D9@gmail.com> <YMCj2P4AlqlpeXdV@clarinet.employees.org> <EC1A1D29-EF8D-4480-A950-3BA2AD16033F@gmail.com> <881FF4F8-27BA-4B58-B54E-68F3811BE1D4@layerfree.net> <CAAWx_pWZt1RTHeCvghfNFyEB7E-6zDC89uexbDEdo=9=uVLcBA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <CAAWx_pWZt1RTHeCvghfNFyEB7E-6zDC89uexbDEdo=9=uVLcBA@mail.gmail.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/izhueQ6xTrnOlsuS86lMl_SFKK4>
Subject: Re: [Pals] [Int-area] L2TP sequencing: Commonly disabled for IP data? Or always?
X-BeenThere: pals@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Pseudowire And LDP-enabled Services dicussion list." <pals.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/pals>, <mailto:pals-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/pals/>
List-Post: <mailto:pals@ietf.org>
List-Help: <mailto:pals-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/pals>, <mailto:pals-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Jun 2021 13:57:08 -0000

On Wed, Jun 09, 2021 at 03:07:41PM +0200, James Bensley wrote:
> On Wed, 9 Jun 2021 at 14:05, Giles Heron <giles@layerfree.net> wrote:
> > Re BT specifically (and again my info is outdated and may be mis-remembered) the 20C network used L2TP, and I think it’s an option on 21C for handoff to smaller ISPs.  Should all be in the SINs somewhere?
> 
> I work in the UK ISP sector. I can confirm that L2TP is in wide spread
> use for wholesale services by all major ISPs (except Liberty). I think
> the real question here (unless I've misunderstood) is not "is L2TP
> being used" but "is L2TP being used AND sequencing is being used
> and/or enforced?" - is that understanding correct?

Yes.

DF