Re: [nvo3] NVO3 WG Adoption of draft-quinn-vxlan-gpe-04

"Larry Kreeger (kreeger)" <kreeger@cisco.com> Wed, 29 April 2015 17:02 UTC

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From: "Larry Kreeger (kreeger)" <kreeger@cisco.com>
To: "sarikaya@ieee.org" <sarikaya@ieee.org>, Benson Schliesser <bensons@queuefull.net>
Thread-Topic: [nvo3] NVO3 WG Adoption of draft-quinn-vxlan-gpe-04
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Date: Wed, 29 Apr 2015 17:02:08 +0000
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Subject: Re: [nvo3] NVO3 WG Adoption of draft-quinn-vxlan-gpe-04
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Hi Behcet,

The idea is to allow VXLAN GPE to either encapsulate
IPv4/v6/Ethernet/futureThings directly, or insert an NSH header between
VXLAN GPE and those.  To do this, VXLAN GPE indicates NSH, then NSH
indicates what the next protocol is (e.g. IPv4/v6/Ethernet/futureThings).

 - Larry

On 4/29/15 9:01 AM, "Behcet Sarikaya" <sarikaya2012@gmail.com> wrote:

>On Tue, Apr 28, 2015 at 5:03 PM, Behcet Sarikaya <sarikaya2012@gmail.com>
>wrote:
>> Hi Benson,
>>
>> Joe Touch wrote this on intarea list:
>>
>> There is no reason for having the GUE header differentiate between
>> payload=IPv4 and payload=IPv6. The IP version is addressed by the
>> version field of the IP header. If GUE encapsulates both type of IP the
>> same way (and it should), it should NOT differentiate between them in
>> its (GUE) header.
>>
>>
>> I think the same applies to gpe header.
>>
>> Plus the issues on the "NSH" protocol.
>
>Curiously if you look at the nsh draft, Section 3.2,
>
>NSH Base Header
>
>also has a next protocol field with the same encoding.
>
>Anybody understands what is going on?
>
>Behcet
>>
>> Regards,
>>
>> Behcet
>>
>> On Tue, Apr 28, 2015 at 3:52 PM, Benson Schliesser
>> <bensons@queuefull.net> wrote:
>>> Hi, Behcet.
>>>
>>> Behcet Sarikaya wrote:
>>>>
>>>> I was wondering what is NSH in this draft? It is referenced as an
>>>> unnamed unknown draft from 2014?
>>>
>>>
>>> I believe that NSH refers to the protocol described by
>>>draft-ietf-sfc-nsh.
>>> (https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh/)
>>>
>>> Thank you for reviewing the draft and noticing that the reference was
>>> outdated. I anticipate that the co-authors will update the text
>>>accordingly
>>> in a future revision.
>>>
>>> Cheers,
>>> -Benson