Re: [Pals] I-D Action: draft-cheng-pals-p2p-pw-multicast-01.txt

Stewart Bryant <stewart.bryant@gmail.com> Thu, 21 November 2019 08:06 UTC

Return-Path: <stewart.bryant@gmail.com>
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 01C77120822; Thu, 21 Nov 2019 00:06:59 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.998
X-Spam-Level:
X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 NuJtTdQynjjP; Thu, 21 Nov 2019 00:06:56 -0800 (PST)
Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A5C7F120048; Thu, 21 Nov 2019 00:06:53 -0800 (PST)
Received: by mail-pf1-x42f.google.com with SMTP id b19so1276579pfd.3; Thu, 21 Nov 2019 00:06:53 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:content-transfer-encoding:mime-version:subject:date:references :to:in-reply-to:message-id; bh=2CfS4MkQ+LlWF0DRKl6hZm5y9hUmwhFFhH0m7dTtJ/I=; b=s64PJDqg+Fd2OgbvTCnZ0U9rr7iec+Rvf46iUt92tR3XKsh4spT2dHT58Le4G7uDN7 KO282/jEeVw9HuHmvwAwLRQgYexIoGBtc4TBbv6nSZF5KKWhv+PGdrfP/uuyHjssw70I 1NkaYwBZ+kakpqPOdSAi/PgPYbIGER36T1WfJ7/u0ApNS9RWzpaV66H27RJYgPYhktiC DS4lToY+t6CNDJ8S0OrPlxzWDPUuejxSli1GvZmmCfI4sy+uWYoCxRdI/YFOy4jQjSSd ubl5l0T+VKK5CNNGqr9Dq0Q0i36c/FZ92fwyRVEQOnvpBNHi4L4Q8cFrWlyCcimmfPMR 0GeQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:date:references:to:in-reply-to:message-id; bh=2CfS4MkQ+LlWF0DRKl6hZm5y9hUmwhFFhH0m7dTtJ/I=; b=kc/CEy+hYLVGQIuWhZciOjIA9swzdNqid8512YMIVcLdJLwrK2O3hQmNiDx9/D5yeD /z9d6/8nj1sQOauNLakCI0RicuDiHIhcita1zAX/qazEYXSH76Ou2SCN/Tj9YAF8FOpy z8TMBQTCXZaXJB3bMzfUTsPInDxQ1BhJHie+CqqPFMx4HlEvb7ZZNddGBCl8o/zkO+YX Xx0cMV+5nmM2LU4SziVaGuBb2yIdW24ESNpUspnImWH2QYGf0lGPmOZo72D4Vq+Pr7zS TnKaIVYp3+nNODFB3xSWoQrE+glTO6ajHDC3i+A3KR1zUm5MmPAuCcQT7Z65Kd+tyPX4 PdBw==
X-Gm-Message-State: APjAAAWosFNkrEF+IkiIoYFyT024nKLuDVrfnu4ppsFZQ4L+K5aCzQri JO1JnuBez+zI0U5o7Hl6vTfaCv09dxc=
X-Google-Smtp-Source: APXvYqxfOgSfygH/9rTkYV1qThc0BpHUP+NJWOQCD5oIqCdBI7/h3BoR9nbOdy9ecyDy9Ho8Z5LvkQ==
X-Received: by 2002:aa7:9804:: with SMTP id e4mr9172288pfl.21.1574323612864; Thu, 21 Nov 2019 00:06:52 -0800 (PST)
Received: from ?IPv6:2001:67c:370:128:94b2:e54c:9967:3e5f? ([2001:67c:370:128:94b2:e54c:9967:3e5f]) by smtp.gmail.com with ESMTPSA id w2sm1946388pgm.18.2019.11.21.00.06.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Nov 2019 00:06:52 -0800 (PST)
From: Stewart Bryant <stewart.bryant@gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 13.0 \(3601.0.10\))
Date: Thu, 21 Nov 2019 16:06:48 +0800
References: <157414653421.14016.7862208637007986260@ietfa.amsl.com>
To: pals@ietf.org, draft-cheng-pals-p2p-pw-multicast@ietf.org
In-Reply-To: <157414653421.14016.7862208637007986260@ietfa.amsl.com>
Message-Id: <B60F3229-F3F5-4A1E-9A6C-0BB27D1722A4@gmail.com>
X-Mailer: Apple Mail (2.3601.0.10)
Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/dPPFSNqx_06ql9m7ie99qDeNJJQ>
Subject: Re: [Pals] I-D Action: draft-cheng-pals-p2p-pw-multicast-01.txt
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: Thu, 21 Nov 2019 08:06:59 -0000

Hi,

Please can the authors help me understand why this is a PALS draft, or indeed why it is a draft at all?

I don’t think it proposes to extend the PALS technology. It simply uses PWs to carry L2 (presumably Ethernet) across a provider network, something that PWs already do.

Maybe I don’t understand the draft, but this looks like a deployment description that does not need standardisation.

Please can the authors help the WG better understand why this needs to be an IETF specification?

Best regards

Stewart

> On 19 Nov 2019, at 14:55, internet-drafts@ietf.org wrote:
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> 
> 
>        Title           : Efficient Layer 2 Multicast with Point-to-Point Pseudowires
>        Authors         : Weiqiang Cheng
>                          Jie Dong
> 	Filename        : draft-cheng-pals-p2p-pw-multicast-01.txt
> 	Pages           : 6
> 	Date            : 2019-11-18
> 
> Abstract:
>   Multicast services such as Evolved Multimedia Broadcast/Multicast
>   Service (eMBMS) become more and more popular in mobile networks.  In
>   mobile transport network, it is important for the operators to
>   provide efficient transport of multicast services with existing
>   network devices.  This document describes a mechanism of using point-
>   to-point Pseudowires (PW) [RFC3985] to achieve efficient layer 2
>   multicast transportation in mobile transport networks.The document
>   gives a multicast method by utilizing a Point-to-Point (P2P) path
>   between nodes in a packet transport network , according to the
>   destination IP address.  With it, the PTN nodes can replicate and
>   forward the service message, which are received from the multicast
>   server, to the plurality of multicast clients corresponding to the
>   destination IP address.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-cheng-pals-p2p-pw-multicast/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-cheng-pals-p2p-pw-multicast-01
> https://datatracker.ietf.org/doc/html/draft-cheng-pals-p2p-pw-multicast-01
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-cheng-pals-p2p-pw-multicast-01
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt