IETF Logo Mail Archive

Re: [homenet] dst/src routing drafts (for IETF-91 rtgwg)

Tim Chown <tjc@ecs.soton.ac.uk> Tue, 28 October 2014 19:46 UTC

Return-Path: <tjc@ecs.soton.ac.uk>
X-Original-To: homenet@ietfa.amsl.com
Delivered-To: homenet@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B181C1ACD15; Tue, 28 Oct 2014 12:46:20 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.231
X-Spam-Level:
X-Spam-Status: No, score=-1.231 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_NEUTRAL=0.779, T_RP_MATCHES_RCVD=-0.01] autolearn=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 MAi2iNnTv83o; Tue, 28 Oct 2014 12:46:18 -0700 (PDT)
Received: from falcon.ecs.soton.ac.uk (falcon.ecs.soton.ac.uk [IPv6:2001:630:d0:f102::25e]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 102D81ACD04; Tue, 28 Oct 2014 12:46:14 -0700 (PDT)
Received: from falcon.ecs.soton.ac.uk (localhost [127.0.0.1]) by falcon.ecs.soton.ac.uk (8.13.8/8.13.8) with ESMTP id s9SJjuj4031557; Tue, 28 Oct 2014 19:45:56 GMT
X-DKIM: Sendmail DKIM Filter v2.8.2 falcon.ecs.soton.ac.uk s9SJjuj4031557
DKIM-Signature: v=1; a=rsa-sha1; c=simple/simple; d=ecs.soton.ac.uk; s=201304; t=1414525556; bh=E4WStCiA8bKeYuGZOU8JfD2/qjI=; h=Mime-Version:Subject:From:In-Reply-To:Date:Cc:References:To; b=bxZteXgXnwDLVnGhyXqsCoLd4Ixqt5IIlxx14DYKB5ZxSUP8Xe3fC2C52x9qJphIZ +tnO4ADM9rLePEGTD9LbtXa0irk1N/a9/wHbX/UQD7gFuyWM+PC3jnMkfGhnL+AnjA pPQBdvhCp1Ov+ZtjUvUKzsTBHzivF4nzcN++vAts=
Received: from gander.ecs.soton.ac.uk (gander.ecs.soton.ac.uk [2001:630:d0:f102::25d]) by falcon.ecs.soton.ac.uk (falcon.ecs.soton.ac.uk [2001:630:d0:f102::25e]) envelope-from <tjc@ecs.soton.ac.uk> with ESMTP (valid=N/A) id q9RJju07631119375H ret-id none; Tue, 28 Oct 2014 19:45:56 +0000
Received: from [192.168.1.108] (host213-123-213-183.in-addr.btopenworld.com [213.123.213.183]) (authenticated bits=0) by gander.ecs.soton.ac.uk (8.13.8/8.13.8) with ESMTP id s9SJik0r023263 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Tue, 28 Oct 2014 19:44:47 GMT
Content-Type: multipart/signed; boundary="Apple-Mail=_A299BC16-851D-4B16-8D3E-E5873F004D4E"; protocol="application/pgp-signature"; micalg="pgp-sha512"
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
From: Tim Chown <tjc@ecs.soton.ac.uk>
In-Reply-To: <DFE4317C-E4B6-44AB-AED4-2FBBBD2888DA@cisco.com>
Date: Tue, 28 Oct 2014 19:44:45 +0000
Message-ID: <EMEW3|17ee7d75db17a3a1b8e43f85ebccb07bq9RJju03tjc|ecs.soton.ac.uk|5C2EFB4E-925B-4252-BE58-894F9C061EA7@ecs.soton.ac.uk>
References: <20141020204033.GD236844@jupiter.n2.diac24.net> <20141022190653.GB868521@jupiter.n2.diac24.net> <DFE4317C-E4B6-44AB-AED4-2FBBBD2888DA@cisco.com> <5C2EFB4E-925B-4252-BE58-894F9C061EA7@ecs.soton.ac.uk>
To: "Fred Baker (fred)" <fred@cisco.com>
X-Mailer: Apple Mail (2.1878.6)
X-ECS-MailScanner: Found to be clean, Found to be clean
X-smtpf-Report: sid=q9RJju076311193700; tid=q9RJju07631119375H; client=relay,ipv6; mail=; rcpt=; nrcpt=5:0; fails=0
X-ECS-MailScanner-Information: Please contact the ISP for more information
X-ECS-MailScanner-ID: s9SJjuj4031557
X-ECS-MailScanner-From: tjc@ecs.soton.ac.uk
Archived-At: http://mailarchive.ietf.org/arch/msg/homenet/zA49roa70Qj_HtYEdorkl3m5IjY
Cc: "homenet@ietf.org" <homenet@ietf.org>, Mikael Abrahamsson <swmike@swm.pp.se>, "rtgwg@ietf.org" <rtgwg@ietf.org>, David Lamparter <equinox@diac24.net>
Subject: Re: [homenet] dst/src routing drafts (for IETF-91 rtgwg)
X-BeenThere: homenet@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: <homenet.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/homenet>, <mailto:homenet-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/homenet/>
List-Post: <mailto:homenet@ietf.org>
List-Help: <mailto:homenet-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/homenet>, <mailto:homenet-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Oct 2014 19:46:20 -0000

On 22 Oct 2014, at 21:16, Fred Baker (fred) <fred@cisco.com> wrote:

> On Oct 22, 2014, at 12:06 PM, David Lamparter <equinox@diac24.net> wrote:
> 
>> On Mon, Oct 20, 2014 at 10:40:33PM +0200, David Lamparter wrote:
>>> https://datatracker.ietf.org/doc/draft-lamparter-rtgwg-routing-extra-qualifiers/?include_text=1
>>> https://datatracker.ietf.org/doc/draft-lamparter-rtgwg-dst-src-routing/?include_text=1
> 
> Speaking strictly for myself, I’m not sure why homenet is relevant. The technology is related to networks that have different routing depend on on one’s use case. A class of solutions for it has been called the “fish” problem, and built using multi-topology routing. In homenet, it’s called SADR, and is primarily about egress routing (routing to an egress to an upstream ISP that gave you a PA prefix). While one doesn’t really want to confuse theory with practice, in theory it could be used between points of a network, to prevent folks using one set of prefixes to talk with another set, or to force routing of some sessions in some ways.
> 
> Personally, those are a class of problems I associate with campus networks more than residential networks.

I suspect most campus networks will have a single /48 from their NREN, or a /48 PI. I’m not aware of any campuses in the UK which are multi-homed with dual /48, though I understand some Internet2 campuses may be. 

(As an aside we’ve just run out of our v4 /16…)

Homenet has ‘designed in’ future multihoming, which is rare today. In the homenet case the multihoming may presumably be more commonly for different services to the home?

Tim

v2.23.0 | Report a Bug | By Email