Re: [Isis-wg] I-D Action: draft-ietf-isis-segment-routing-extensions-14.txt

Stewart Bryant <stewart.bryant@gmail.com> Fri, 22 December 2017 17:29 UTC

Return-Path: <stewart.bryant@gmail.com>
X-Original-To: isis-wg@ietfa.amsl.com
Delivered-To: isis-wg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 71B2E124B18 for <isis-wg@ietfa.amsl.com>; Fri, 22 Dec 2017 09:29:41 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.7
X-Spam-Level:
X-Spam-Status: No, score=-2.7 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_LOW=-0.7, SPF_PASS=-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 VelmW2rg9Fo3 for <isis-wg@ietfa.amsl.com>; Fri, 22 Dec 2017 09:29:39 -0800 (PST)
Received: from mail-wm0-x236.google.com (mail-wm0-x236.google.com [IPv6:2a00:1450:400c:c09::236]) (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 B5A84124217 for <isis-wg@ietf.org>; Fri, 22 Dec 2017 09:29:38 -0800 (PST)
Received: by mail-wm0-x236.google.com with SMTP id r78so23217551wme.5 for <isis-wg@ietf.org>; Fri, 22 Dec 2017 09:29:38 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=wqzMca53xicDktGV6jgnwtwDTJXOlhIEe4ZKgVV66Fs=; b=JuZLvwn3uPX0e+oLRmCTEd/ymacjBqqObN6yRtUU5KcqrTsydaiHGlRTwa5WbWMP0f vr+s0QFO/3e45MzMR2bujtOkUXjS4jnM7HovEFAmNuYD5kiuRYSZDK6Blc0qb2zmpdC7 2cqElZ2tnweaTSLyaBriQ7gT/wt1NaLCppzN0u7NweeHyxdwceiY1pZEAivlIrJQfnah npYMEhvBJIXymIHtsBNokaLkSJNNwgcoVEwTO/RtRpBVXZAPJi+qc8OYgBOWpOBD6B4q nyQosLJSDzAWafvjSoSFdnb0Sn2f5hXJ+vteQEZQBiaT3XkQTP+pq3AE8iT0Jd5P0YWS 4yDQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=wqzMca53xicDktGV6jgnwtwDTJXOlhIEe4ZKgVV66Fs=; b=kHI+UEfG4difpA6X5ss7rDeK1iZf0H03ATJb4kR+vVPEJrpDWnrAWJgi1wGAnQ8vyt Sw0RP3Hs/agw/+Ud2QLfxkVlto4k+nLY8WVPqU/KW+mct5W00Z8UPm3yC3fZv40Da3OF uB/qg+VYF3/FGanq0Uxg1CdTgg3+kqd1PfEDn0dxek62dspIHgxvdSMuXU9o7SjLLfgt yT12bsG/dgt+xuI33rrfHVVM6znRu2haaIAXf0XAZzan4Jz+1cICNGbyvWzs+6x+W8t5 WMxxOAZp/HCXXTy4HgRd5Ovgk8AV3ZOSsO4xPMsC8gLqGqBZNqLH5OAkfm86XmY3WWll Whsg==
X-Gm-Message-State: AKGB3mLAYMgD+Wq+81PNHJfHmG1SVIuFHzukKOHp9YSw4QgqXVpJj3VL GlQWsmL5YK/xk/j9Xa08kMCAtUjl
X-Google-Smtp-Source: ACJfBouRCufP2eUEeNjmgu3pGhiJHKHMTjlVOFaTVdoG/MhvW8hpZmrKelRukYf/Klc0SJrC0HzeOg==
X-Received: by 10.80.159.3 with SMTP id b3mr15392483edf.163.1513963777074; Fri, 22 Dec 2017 09:29:37 -0800 (PST)
Received: from [192.168.2.126] (host213-123-124-182.in-addr.btopenworld.com. [213.123.124.182]) by smtp.gmail.com with ESMTPSA id w2sm21238645edb.4.2017.12.22.09.29.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Dec 2017 09:29:36 -0800 (PST)
To: Jeff Tantsura <jefftant.ietf@gmail.com>, "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "isis-wg@ietf.org" <isis-wg@ietf.org>
References: <151335939850.30523.7213037938955532957@ietfa.amsl.com> <dd7879436a02406cb4c2576912bc42d5@XCH-ALN-001.cisco.com> <1FB625B0-9659-4EA6-95DD-0F2AEE665A99@gmail.com>
From: Stewart Bryant <stewart.bryant@gmail.com>
Message-ID: <5be5ff81-3ef9-9531-407e-a9d4379f6d7e@gmail.com>
Date: Fri, 22 Dec 2017 17:29:35 +0000
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0
MIME-Version: 1.0
In-Reply-To: <1FB625B0-9659-4EA6-95DD-0F2AEE665A99@gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-GB
Archived-At: <https://mailarchive.ietf.org/arch/msg/isis-wg/dYcnrTsknWEI4tQjpOrdB_J1tl8>
Subject: Re: [Isis-wg] I-D Action: draft-ietf-isis-segment-routing-extensions-14.txt
X-BeenThere: isis-wg@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: IETF IS-IS working group <isis-wg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/isis-wg>, <mailto:isis-wg-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/isis-wg/>
List-Post: <mailto:isis-wg@ietf.org>
List-Help: <mailto:isis-wg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/isis-wg>, <mailto:isis-wg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 22 Dec 2017 17:29:41 -0000

Hi,

There appears to be no explicit typing for the SID.

Clearly it can be a MPLS label, an IPv6 address, but in the future it 
might be something else. How does a parser know the SID type?

Thanks

Stewart


On 15/12/2017 18:30, Jeff Tantsura wrote:
> Les,
>
> Thanks for doing that, great!
>
> Cheers,
> Jeff
>
> -----Original Message-----
> From: Isis-wg <isis-wg-bounces@ietf.org> on behalf of "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
> Date: Friday, December 15, 2017 at 10:09
> To: "isis-wg@ietf.org" <isis-wg@ietf.org>
> Subject: Re: [Isis-wg] I-D Action: draft-ietf-isis-segment-routing-extensions-14.txt
>
>      I have assumed the editor role from Stefano.
>      
>      This new version restores the support for SID/Label sub-TLV in the SID/Label Binding TLV - needed to support Mirror Context (as requested by Chris Bowers).
>      It also addresses some IANA related issues - including the conflicting code point w the MSD draft.
>      
>      Some other minor editorial changes have been made.
>      
>      Thanx.
>      
>         Les
>      
>      
>      > -----Original Message-----
>      > From: Isis-wg [mailto:isis-wg-bounces@ietf.org] On Behalf Of internet-
>      > drafts@ietf.org
>      > Sent: Friday, December 15, 2017 9:37 AM
>      > To: i-d-announce@ietf.org
>      > Cc: isis-wg@ietf.org
>      > Subject: [Isis-wg] I-D Action: draft-ietf-isis-segment-routing-extensions-
>      > 14.txt
>      >
>      >
>      > A New Internet-Draft is available from the on-line Internet-Drafts directories.
>      > This draft is a work item of the IS-IS for IP Internets WG of the IETF.
>      >
>      >         Title           : IS-IS Extensions for Segment Routing
>      >         Authors         : Stefano Previdi
>      >                           Les Ginsberg
>      >                           Clarence Filsfils
>      >                           Ahmed Bashandy
>      >                           Hannes Gredler
>      >                           Stephane Litkowski
>      >                           Bruno Decraene
>      >                           Jeff Tantsura
>      > 	Filename        : draft-ietf-isis-segment-routing-extensions-14.txt
>      > 	Pages           : 34
>      > 	Date            : 2017-12-15
>      >
>      > Abstract:
>      >    Segment Routing (SR) allows for a flexible definition of end-to-end
>      >    paths within IGP topologies by encoding paths as sequences of
>      >    topological sub-paths, called "segments".  These segments are
>      >    advertised by the link-state routing protocols (IS-IS and OSPF).
>      >
>      >    This draft describes the necessary IS-IS extensions that need to be
>      >    introduced for Segment Routing operating on an MPLS data-plane.
>      >
>      >
>      >
>      > The IETF datatracker status page for this draft is:
>      > https://datatracker.ietf.org/doc/draft-ietf-isis-segment-routing-extensions/
>      >
>      > There are also htmlized versions available at:
>      > https://tools.ietf.org/html/draft-ietf-isis-segment-routing-extensions-14
>      > https://datatracker.ietf.org/doc/html/draft-ietf-isis-segment-routing-
>      > extensions-14
>      >
>      > A diff from the previous version is available at:
>      > https://www.ietf.org/rfcdiff?url2=draft-ietf-isis-segment-routing-
>      > extensions-14
>      >
>      >
>      > 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/
>      >
>      > _______________________________________________
>      > Isis-wg mailing list
>      > Isis-wg@ietf.org
>      > https://www.ietf.org/mailman/listinfo/isis-wg
>      
>      _______________________________________________
>      Isis-wg mailing list
>      Isis-wg@ietf.org
>      https://www.ietf.org/mailman/listinfo/isis-wg
>      
>
>
> _______________________________________________
> Isis-wg mailing list
> Isis-wg@ietf.org
> https://www.ietf.org/mailman/listinfo/isis-wg