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Re: [nvo3-dt-encap] [nvo3] Encap draft published by design team

Joe Touch <touch@isi.edu> Thu, 16 February 2017 23:30 UTC

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To: Tom Herbert <tom@herbertland.com>
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From: Joe Touch <touch@isi.edu>
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Date: Thu, 16 Feb 2017 15:30:09 -0800
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Cc: Sam Aldrin <aldrin.ietf@gmail.com>, Sami Boutros <sboutros@vmware.com>, "nvo3-dt-encap@ietf.org" <nvo3-dt-encap@ietf.org>, "nvo3-chairs@ietf.org" <nvo3-chairs@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>
Subject: Re: [nvo3-dt-encap] [nvo3] Encap draft published by design team
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On 2/16/2017 3:26 PM, Tom Herbert wrote:
> Admittedly, without any actual TLVs defined in Geneve all of this is
> all just speculation on my part!
>
> Tom
Agreed, and more specifically, regardless of the flexibility of TLVs in
general, if the negotiation protocol specifies a fixed set of them, each
with fixed, known length, then even though the TLV allows flexibility in
what COULD appear, a given pair of endpoints can rely on a fixed set
that is easy to parse in parallel.

That's why TLVs are a superset of bitfields; a bitfield is just a single
TLV.

Joe

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