[manet] DLEP with wireline links ?

Toerless Eckert <tte@cs.fau.de> Mon, 08 March 2021 13:51 UTC

Return-Path: <eckert@i4.informatik.uni-erlangen.de>
X-Original-To: manet@ietfa.amsl.com
Delivered-To: manet@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 00A533A2A93 for <manet@ietfa.amsl.com>; Mon, 8 Mar 2021 05:51:19 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.65
X-Spam-Level:
X-Spam-Status: No, score=-1.65 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=no 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 MJi55d2jkLwi for <manet@ietfa.amsl.com>; Mon, 8 Mar 2021 05:51:16 -0800 (PST)
Received: from faui40.informatik.uni-erlangen.de (faui40.informatik.uni-erlangen.de [131.188.34.40]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8DAA53A2A8E for <manet@ietf.org>; Mon, 8 Mar 2021 05:51:16 -0800 (PST)
Received: from faui48f.informatik.uni-erlangen.de (faui48f.informatik.uni-erlangen.de [IPv6:2001:638:a000:4134::ffff:52]) by faui40.informatik.uni-erlangen.de (Postfix) with ESMTP id 73B7354804B for <manet@ietf.org>; Mon, 8 Mar 2021 14:51:12 +0100 (CET)
Received: by faui48f.informatik.uni-erlangen.de (Postfix, from userid 10463) id 6CC35440166; Mon, 8 Mar 2021 14:51:12 +0100 (CET)
Date: Mon, 8 Mar 2021 14:51:12 +0100
From: Toerless Eckert <tte@cs.fau.de>
To: manet@ietf.org
Message-ID: <20210308135112.GA45917@faui48f.informatik.uni-erlangen.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.10.1 (2018-07-13)
Archived-At: <https://mailarchive.ietf.org/arch/msg/manet/I0q7Fvm-9Lw6p2cYPSkWO6Bdl4k>
Subject: [manet] DLEP with wireline links ?
X-BeenThere: manet@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Mobile Ad-hoc Networks <manet.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/manet>, <mailto:manet-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/manet/>
List-Post: <mailto:manet@ietf.org>
List-Help: <mailto:manet-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/manet>, <mailto:manet-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 08 Mar 2021 13:51:19 -0000

Sory for asking a random question on a list i don't currently contribute to,
but Rick Taylors  presenation about DLEP in RAW reminded me to ask this:

Has DLEP in the past year ever managed to proliverate into wireline L2 modems/interfaces ?

I was always annoyed by the absence of a good 3 evice to modem signaling
protocol on wireline and always thought DLEP was likely the most
pragmatic approach, but i have never seen that it did proliferate.

Use-case example:
 - (VAX)DSL learning of training rates for the L3 device to be able to
   set up appropriate QoS, ingres shaper etc to support better than BE QoS.

 - Similarily, CPE equipment on FTTH signaling their contractual
   limits to the router (typically you have less then the nominal speed of 1 Gbps)
   (today you can only effectively set up contract aware QoS when the router
    is run by the SP and uses TR69 provisioning - AFAIK).

 - Level of Loss/FEC for example for proactive failover (when this is not all
   integrated into the non-modular MIC on the router.

 - Nominal Link latency, technology/variation - e.g.: If a link is copper
   on a pole instead of fiber in th ground, latency variation of links can be
   up to 10% due to temperature changes (if i remember correctly examplee calculation),
   that would be very good to know for any control/management plane building an 
   e.g.: detnet solution on top of such links.

Cheers
    Toerless