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

Luigi Iannone <ggx@gigix.net> Tue, 02 June 2020 07:11 UTC

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From: Luigi Iannone <ggx@gigix.net>
In-Reply-To: <0E828956-16D3-43CA-9341-8833FC9B8A8E@cisco.com>
Date: Tue, 2 Jun 2020 09:11:40 +0200
Cc: "lisp@ietf.org" <lisp@ietf.org>, "draft-ietf-lisp-gpe@ietf.org" <draft-ietf-lisp-gpe@ietf.org>
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To: "Fabio Maino (fmaino)" <fmaino@cisco.com>
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Subject: Re: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt
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> 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	
>     0x80 to 0xFD:  Unassigned (shim headers)	
>     0xFE to 0xFF:  Experimentation and testing


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/
>> 
>> 
>> _______________________________________________
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> 
>