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Re: [Int-area] draft-bonica-intarea-frag-fragile-01

Ron Bonica <rbonica@juniper.net> Thu, 31 May 2018 19:07 UTC

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From: Ron Bonica <rbonica@juniper.net>
To: Joe Touch <touch@strayalpha.com>, Bob Hinden <bob.hinden@gmail.com>
CC: "int-area@ietf.org" <int-area@ietf.org>
Thread-Topic: [Int-area] draft-bonica-intarea-frag-fragile-01
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Archived-At: <https://mailarchive.ietf.org/arch/msg/int-area/aQ10r3AP-xR5ea7Ijz6Uj-A_rxs>
Subject: Re: [Int-area] draft-bonica-intarea-frag-fragile-01
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Joe,

draft-ietf-tsvwg-udp-options is exactly the kind of work that the current draft encourages. If IP fragmentation is fragile, it makes sense for upper-layer protocols to manage fragmentation/mtu issues on their own, without relying on IP fragmentation.

                                                                 Ron

> -----Original Message-----
> From: Joe Touch <touch@strayalpha.com>
> Sent: Tuesday, March 6, 2018 9:39 AM
> To: Bob Hinden <bob.hinden@gmail.com>
> Cc: Ron Bonica <rbonica@juniper.net>; int-area@ietf.org
> Subject: Re: [Int-area] draft-bonica-intarea-frag-fragile-01
> 
> You might also want to look at tsvwg-udp-options
> 
> In one case, they’re used to support PLPMTUD (which you already note).
> 
> Alternatively, they provide transport-layer frag/reassembly that might be
> useful for DNSSEC as well as enabling NAT-traversal by retaining ports across
> fragments.
> 
> Joe
> 
> > On Mar 5, 2018, at 8:46 AM, Bob Hinden <bob.hinden@gmail.com> wrote:
> >
> > Joe,
> >
> >> On Mar 5, 2018, at 7:01 AM, Joe Touch <touch@strayalpha.com> wrote:
> >>
> >> This doc completely overlooks the role of fragmentation in IP over IP
> tunneling and the reason fragmentation is critical (IP has a maximum packet
> size, not just a minimum).
> >>
> >> See draft-ietf-intarea-tunnels.
> >
> > Good point.  We will take a look at intarea-tunnels and look at some
> changes to the fragmentation draft.
> >
> > Bob
> >
> >
> >
> >>
> >> As a result, IMO the recommendations and conclusions are incorrect.
> >>
> >> Joe
> >>
> >>> On Mar 5, 2018, at 6:16 AM, Ron Bonica <rbonica@juniper.net> wrote:
> >>>
> >>> Folks,
> >>>
> >>> Please review draft-bonica-intarea-frag-fragile-01 and provide
> comments. The URL is https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__tools.ietf.org_html_draft-2Dbonica-2Dintarea-2Dfrag-2Dfragile-
> 2D01&d=DwIFaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-
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> >>>
> >>>                                                                                     Ron
> >>>
> >>> _______________________________________________
> >>> Int-area mailing list
> >>> Int-area@ietf.org
> >>> https://urldefense.proofpoint.com/v2/url?u=https-
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> >>
> >> _______________________________________________
> >> Int-area mailing list
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> >

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