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Re: [Tsv-art] [Last-Call] Tsvart last call review of draft-ietf-idr-tunnel-encaps-19

Joseph Touch <touch@strayalpha.com> Fri, 16 October 2020 01:12 UTC

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From: Joseph Touch <touch@strayalpha.com>
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Date: Thu, 15 Oct 2020 18:12:04 -0700
Cc: tsv-art <tsv-art@ietf.org>, Last Call <last-call@ietf.org>, draft-ietf-idr-tunnel-encaps.all@ietf.org, idr@ietf.org
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To: Brian Trammell <ietf@trammell.ch>
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Subject: Re: [Tsv-art] [Last-Call] Tsvart last call review of draft-ietf-idr-tunnel-encaps-19
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> On Sep 28, 2020, at 11:32 PM, Brian Trammell via Datatracker <noreply@ietf.org> wrote:
> 
> First and foremost, I was surprised to find no reference to tunnel or MTU 
> anywhere in the document, especially given the guidance in section 6 to
> stack tunnels. MTU issues are operationally difficulty in single-tunnel
> environments and become more likely to cause problems in multiple-tunnel
> environments. 

+1

This is discussed in detail, with some much more specific terminology, in draft-ietf-intarea-tunnels

In particular, *path MTU* is different from the received MTU, etc. It’s important to get this correct (note the many examples of current standards that do not).

Joe

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