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Re: A draft on the encapsulation of end-to-end IETF network slice information in IPv6 data plane

Carsten Bormann <cabo@tzi.org> Mon, 24 May 2021 15:52 UTC

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Subject: Re: A draft on the encapsulation of end-to-end IETF network slice information in IPv6 data plane
From: Carsten Bormann <cabo@tzi.org>
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Date: Mon, 24 May 2021 17:52:29 +0200
Cc: "Dongjie (Jimmy)" <jie.dong@huawei.com>, 6MAN <6man@ietf.org>
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To: Tom Herbert <tom@herbertland.com>
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On 2021-05-24, at 17:33, Tom Herbert <tom@herbertland.com> wrote:
> 
> Also, this is a way to pack data into one option as opposed to using separate options (so less overhead and limiting number of options in HBH EH is a good thing).

I’m not sure the HBH concept can be saved, but the packing you suggest means that a recipient has to understand all the bits in order to be able to process all the packed fields in the HBH option.
That makes it hard to incrementally start using another bit with elective semantics (you wouldn’t care if understanding the bit is critical anyway).

Grüße, Carsten

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