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Re: [nvo3] [Int-area] Fwd: New Version Notification for draft-ietf-nvo3-gue-03.txt

Xuxiaohu <xuxiaohu@huawei.com> Mon, 20 June 2016 02:05 UTC

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From: Xuxiaohu <xuxiaohu@huawei.com>
To: Joe Touch <touch@isi.edu>, Tom Herbert <tom@herbertland.com>
Thread-Topic: [nvo3] [Int-area] Fwd: New Version Notification for draft-ietf-nvo3-gue-03.txt
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Date: Mon, 20 Jun 2016 02:05:10 +0000
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Subject: Re: [nvo3] [Int-area] Fwd: New Version Notification for draft-ietf-nvo3-gue-03.txt
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> -----Original Message-----
> From: Joe Touch [mailto:touch@isi.edu]
> Sent: Friday, June 17, 2016 11:33 PM
> To: Tom Herbert; Xuxiaohu
> Cc: nvo3@ietf.org; int-area@ietf.org
> Subject: Re: [nvo3] [Int-area] Fwd: New Version Notification for
> draft-ietf-nvo3-gue-03.txt
> 
> 
> 
> On 6/17/2016 8:06 AM, Tom Herbert wrote:
> > The problem was that VXLAN defined unknown flag bits to be ignored
> > upon receive. So if a legacy VLXAN device ever received a VXLAN-GPE
> > packet (P-bit set) it would be misinterpreted as a VLXAN packet.
> > Effectively this makes VXLAN-GPE a new protocol not a different
> > version of VXLAN.
> 
> Right - the issue is that the new protocol is not a *subset* of the older one.

If it was a totally new protocol, why call it VXLAN-GPE instead of GPE? Furthermore, what's the meaning of the P-bit in the VXLAN-GPE header since a dedicated port number has been allocated?

Xiaohu

> That was not the case for VXLAN/VXLAN-GPE, but is for GUE/IP-in-UDP.
> 
> Joe

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