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

"Fabio Maino (fmaino)" <fmaino@cisco.com> Wed, 03 June 2020 16:43 UTC

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From: "Fabio Maino (fmaino)" <fmaino@cisco.com>
To: Luigi Iannone <ggx@gigix.net>
CC: "lisp@ietf.org" <lisp@ietf.org>, "draft-ietf-lisp-gpe@ietf.org" <draft-ietf-lisp-gpe@ietf.org>
Thread-Topic: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt
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Date: Wed, 3 Jun 2020 16:43:35 +0000
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Subject: Re: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt
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Sounds good Luigi.

I’ll publish an updated version that reflects your suggestions later today.

Fabio

From: Luigi Iannone <ggx@gigix.net>
Date: Tuesday, June 2, 2020 at 10:45 PM
To: Fabio Maino <fmaino@cisco.com>
Cc: "lisp@ietf.org" <lisp@ietf.org>rg>, "draft-ietf-lisp-gpe@ietf.org" <draft-ietf-lisp-gpe@ietf.org>
Subject: Re: [lisp] I-D Action: draft-ietf-lisp-gpe-15.txt
Resent-From: <alias-bounces@ietf.org>
Resent-To: Fabio Maino <fmaino@cisco.com>om>, <jennifer.lemon@broadcom.com>om>, <puneet@acm.org>rg>, Darrel Lewis <darlewis@cisco.com>om>, <michsmit@cisco.com>
Resent-Date: Tuesday, June 2, 2020 at 10:44 PM

Hello again,

if you agree to change the text as for may previous email table in section 6 IANA Considerations must be updated as well.

Ciao

L.







On 3 Jun 2020, at 07:38, Luigi Iannone <ggx@gigix.net<mailto:ggx@gigix.net>> wrote:

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<mailto: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<mailto: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<mailto: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<mailto: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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