Re: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt

Luigi Iannone <ggx@gigix.net> Wed, 03 June 2020 05:39 UTC

Return-Path: <ggx@gigix.net>
X-Original-To: lisp@ietfa.amsl.com
Delivered-To: lisp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9E9F63A0A1A for <lisp@ietfa.amsl.com>; Tue, 2 Jun 2020 22:39:00 -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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, 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=gigix-net.20150623.gappssmtp.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 UcwV2RHbzg42 for <lisp@ietfa.amsl.com>; Tue, 2 Jun 2020 22:38:58 -0700 (PDT)
Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) (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 1A0083A0A0E for <lisp@ietf.org>; Tue, 2 Jun 2020 22:38:57 -0700 (PDT)
Received: by mail-wr1-x42a.google.com with SMTP id p5so883837wrw.9 for <lisp@ietf.org>; Tue, 02 Jun 2020 22:38:57 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gigix-net.20150623.gappssmtp.com; s=20150623; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=Jry5DUWSGSYovES4VVlsVk2varhbVEoTXcjBkMSQsAE=; b=ABBd+cHIPgL+T4TqV1bs2kkSzO0QDOaKhwvw03K4oTfoYBB6djJmAQ8Gj2Im0Z2PqN cxsNbZ6wgluuiqe8c72Veo/6zzonNtRgsmL7NL78602Ladg9P73CN6oHnu6Tw0UP6Q2O YnS6gcIqaSDeBG/Ap6VTvIoPvWS8lB3qb3lo38FxuHR/gDQoxLeDILtZxqcgyih6WIbG c6VRAUj7PWbL/UAjiAPnZSFjEoxKY4ekGlgtSElBsmFYYRqoZ+wAVp6VLOKimpYqy63D P1AFV83fSzpb/ZZlj97oYumqUTESq3KcTbLNVHL0z0JpP3W7mybvkYE+TGulaX87Xbrk kZgQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=Jry5DUWSGSYovES4VVlsVk2varhbVEoTXcjBkMSQsAE=; b=DPt91bdIyOyhtVnc1c2itYJ6RqO9dqog5RmuGuCBPoDa8Yk+zPLO8Yda8K4UR4OlvK 1Cr3ISocxH7jupOP12kVV73zl4faQkwy0cWyzdr1D18788lzJMaSXvhPPGW1LO/bwhrJ 6fNnTGuYgYWXwgdVgGqC5rDukpWT20uKV93W6HwX8cJNVOghwaiZQZ7UgHgPR5bK+zqn XJX7YgtsswGurT/YsFUNICr4JsxPLQC8lXMPutFyNtCT9lF4+jv+PjOqQFvMrTWswWWt fcvCWJk24clVrquXiCvJkMSilz4oh1+cou6zEjXy+XEAA4MMsdqf2TKsGftDGZwLnAhk VGrg==
X-Gm-Message-State: AOAM530YMMD6fBHTf588Q8EyB7pPIoit1yvxJSMlUR9HMKIJF+t5YdBz 6YP3PaRFBz35Bk/OBRfjACSPt6BO1/pPIg==
X-Google-Smtp-Source: ABdhPJx14t7z+jENNPVzJeckQhRylZFuSm7jqesPKjh7sLN8nFpKYawDkiC9aZLHNHzRSENlo1KcdQ==
X-Received: by 2002:adf:9f48:: with SMTP id f8mr29425311wrg.228.1591162736207; Tue, 02 Jun 2020 22:38:56 -0700 (PDT)
Received: from ?IPv6:2a01:e0a:1ec:470:f558:8219:aec6:20d1? ([2a01:e0a:1ec:470:f558:8219:aec6:20d1]) by smtp.gmail.com with ESMTPSA id w3sm1265058wmg.44.2020.06.02.22.38.54 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Jun 2020 22:38:54 -0700 (PDT)
From: Luigi Iannone <ggx@gigix.net>
Message-Id: <218065E1-2106-407A-BDFC-3DEE85049094@gigix.net>
Content-Type: multipart/alternative; boundary="Apple-Mail=_AA710175-4897-402A-B680-5A5168FB0E39"
Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\))
Date: Wed, 3 Jun 2020 07:38:54 +0200
In-Reply-To: <B9E6E012-2210-42D5-B16D-BC542CF52313@cisco.com>
Cc: "lisp@ietf.org" <lisp@ietf.org>, "draft-ietf-lisp-gpe@ietf.org" <draft-ietf-lisp-gpe@ietf.org>
To: "Fabio Maino (fmaino)" <fmaino@cisco.com>
References: <159099007522.25563.11308110319037900150@ietfa.amsl.com> <2930E31B-6388-46F6-A366-FC8B71721AED@gigix.net> <0E828956-16D3-43CA-9341-8833FC9B8A8E@cisco.com> <F06EBB57-C6F9-4490-91F5-38F1589C0643@gigix.net> <B9E6E012-2210-42D5-B16D-BC542CF52313@cisco.com>
X-Mailer: Apple Mail (2.3608.80.23.2.2)
Archived-At: <https://mailarchive.ietf.org/arch/msg/lisp/kyuc532milYVuNnzL3XHmyBUQ08>
Subject: Re: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt
X-BeenThere: lisp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: List for the discussion of the Locator/ID Separation Protocol <lisp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lisp>, <mailto:lisp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lisp/>
List-Post: <mailto:lisp@ietf.org>
List-Help: <mailto:lisp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lisp>, <mailto:lisp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 03 Jun 2020 05:39:01 -0000

Hi Fabio,

thanks for the clarification. I think that I finally got it:

0x7E to 0x7F is for just experimentation.

 0xFE to 0xFF is for shim headers experimentation 

My confusion came from the fact that is not clearly stated.

Can we modify the text as:

0x7E to 0x7F:  Experimentation and testing	
0x80 to 0xFD:  Unassigned (shim headers)	
0xFE to 0xFF:  Experimentation and testing (shim headers)

So that the difference  is clearly stated.

Ciao

L.



> On 2 Jun 2020, at 19:34, Fabio Maino (fmaino) <fmaino@cisco.com> wrote:
> 
> Ciso Luigi, please see below...
> 
> ´╗┐On 6/2/20, 12:11 AM, "Luigi Iannone" <ggx@gigix.net <mailto:ggx@gigix.net>> wrote:
> 
> 
> 
>> On 1 Jun 2020, at 07:53, Fabio Maino (fmaino) <fmaino@cisco.com> wrote:
>> 
>> Ciao Luigi, 
>> The reason is to allow to experiment with shim headers and non-shim headers at the same time. As you may remember shim headers have a more fixed encodng and must be located before non-shim headers.
> 
>    That is OK for me. 
> 
>    But my question is why this:
> 
>> 0x7E to 0x7F:  Experimentation and testing	
> 
> FM> The two above are for experimentation of NON shim headers
> 
>>    0x80 to 0xFD:  Unassigned (shim headers)	
>>    0xFE to 0xFF:  Experimentation and testing
> 
>> FM These two are for experimentation of shim headers. 
> 
> Shim headers are placed (and processed) first, so we want to give the freedom to experiment with both. 
> 
> For example, one would want to experiment with a shim header (identified by 0xFE) that carries some special metadata for IPv4 payloads, while someone else would want to experiment with IPv8 payloads (identified with 0x7E). A third person might want to experiment, at the same time, with a shim header that carries special metadata for IPv8. 
> 
> Fabio
> 
> 
> 
> 
> 
> 
>    Instead of this (range has been adapted):
> 
>    0x7E to 0xFB:  Unassigned (shim headers)	
>    0xFC to 0xFF:  Experimentation and testing
> 
>    ??
> 
>    Certainly I am missing something ;-)
> 
>    Ciao
> 
>    L.
> 
> 
> 
>> 
>> Thanks,
>> Fabio
>> 
>> 
>> 
>> On 5/31/20, 10:47 PM, "Luigi Iannone" <ggx@gigix.net> wrote:
>> 
>>   Thank you for updating the document.
>> 
>>   I have a quick question.
>> 
>>   Looking at the next protocol values we now see:
>> 
>>    0x7E to 0x7F:  Experimentation and testing	
>>    0x80 to 0xFD:  Unassigned (shim headers)	
>>    0xFE to 0xFF:  Experimentation and testing
>> 
>>   Can you provide a rationale why not having just one bigger experimentation and testing range instead of two with an unassigned range in the middle?
>> 
>>   Thanks
>> 
>>   Ciao
>> 
>>   L.
>> 
>> 
>> 
>>> On 1 Jun 2020, at 07:41, internet-drafts@ietf.org wrote:
>>> 
>>> 
>>> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>>> This draft is a work item of the Locator/ID Separation Protocol WG of the IETF.
>>> 
>>>      Title           : LISP Generic Protocol Extension
>>>      Authors         : Fabio Maino
>>>                        Jennifer Lemon
>>>                        Puneet Agarwal
>>>                        Darrel Lewis
>>>                        Michael Smith
>>> 	Filename        : draft-ietf-lisp-gpe-15.txt
>>> 	Pages           : 15
>>> 	Date            : 2020-05-31
>>> 
>>> Abstract:
>>> This document describes extentions to the Locator/ID Separation
>>> Protocol (LISP) Data-Plane, via changes to the LISP header, to
>>> support multi-protocol encapsulation.
>>> 
>>> 
>>> The IETF datatracker status page for this draft is:
>>> https://datatracker.ietf.org/doc/draft-ietf-lisp-gpe/
>>> 
>>> There are also htmlized versions available at:
>>> https://tools.ietf.org/html/draft-ietf-lisp-gpe-15
>>> https://datatracker.ietf.org/doc/html/draft-ietf-lisp-gpe-15
>>> 
>>> A diff from the previous version is available at:
>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-lisp-gpe-15
>>> 
>>> 
>>> 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/
>>> 
>>> 
>>> _______________________________________________
>>> lisp mailing list
>>> lisp@ietf.org
>>> https://www.ietf.org/mailman/listinfo/lisp