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

Joe Touch <touch@isi.edu> Fri, 17 June 2016 15:34 UTC

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To: Tom Herbert <tom@herbertland.com>, Xuxiaohu <xuxiaohu@huawei.com>
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From: Joe Touch <touch@isi.edu>
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Subject: Re: [nvo3] [Int-area] Fwd: New Version Notification for draft-ietf-nvo3-gue-03.txt
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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.

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

Joe

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