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Re: [Int-area] Discussion about Section 6.1 in draft-ietf-intarea-frag-fragile

Fred Baker <fredbaker.ietf@gmail.com> Fri, 13 September 2019 12:06 UTC

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From: Fred Baker <fredbaker.ietf@gmail.com>
In-Reply-To: <0D884720-9551-4402-9A7B-76E36254F94E@employees.org>
Date: Fri, 13 Sep 2019 15:05:58 +0300
Cc: Fred Templin <Fred.L.Templin@boeing.com>, Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, "int-area@ietf.org" <int-area@ietf.org>
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References: <BYAPR05MB546399E5CB3DD6D87B9F3E2BAEB00@BYAPR05MB5463.namprd05.prod.outlook.com> <92ed853e0df9431481e6ce54152bf561@boeing.com> <0D884720-9551-4402-9A7B-76E36254F94E@employees.org>
To: Ole Troan <otroan@employees.org>
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Subject: Re: [Int-area] Discussion about Section 6.1 in draft-ietf-intarea-frag-fragile
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And the link layer could include capabilities such as described in RFC 1990...

> On Sep 13, 2019, at 2:59 PM, Ole Troan <otroan@employees.org> wrote:
> 
> Fred,
> 
>> Ron, it is just a drop in the bucket compared with the amount of discussion since
>> "Fragmentation Considered Harmful (1987)". But, I think we now clearly see a
>> case where  fragmentation is *required*.
> 
> Absolutely. As tunnels produce a new link-layer, that can (should) be a function of that link-layer.
> Network layer fragmentation is not needed for that.
> (For the purpose of making the point and to set future direction, ignoring existing IP tunnel mechanisms).
> 
> Cheers,
> Ole
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