Re: [Int-area] WG Adoption Call: IP Fragmentation Considered Fragile
Tom Herbert <tom@herbertland.com> Thu, 26 July 2018 15:28 UTC
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From: Tom Herbert <tom@herbertland.com>
Date: Thu, 26 Jul 2018 08:28:04 -0700
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To: Joe Touch <touch@strayalpha.com>
Cc: Wassim Haddad <wassim.haddad@ericsson.com>, "internet-area@ietf.org" <int-area@ietf.org>, "intarea-chairs@ietf.org" <intarea-chairs@ietf.org>
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Subject: Re: [Int-area] WG Adoption Call: IP Fragmentation Considered Fragile
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On Wed, Jul 25, 2018 at 7:14 PM, Joe Touch <touch@strayalpha.com> wrote: > Hi, all, > > I still think it would be useful for this doc to describe how tunnels interact with fragmentation (per draft-ietf-intarea-tunnels), which seems to be something I’ve noted several times before. > > I’m also still not thrilled with the title I’d be happier with “IP fragmentation still not supported per requirements”, and I’d have to see where this goes with final recommendations. > > But I agree *some* statement is worthwhile here. My primary concern is that if we’re not careful, endorsing the status quo will only ensure nothing changes. > > So I sincerely hope that some of the strongest recommendations here are that both direct IP devices and tunnel ingress/egress devices need to do a better job of supporting fragmentation, and that protocol/device designers SHOULD avoid mechanisms that are not compatible with fragmentation (e.g., NAT or DPI without doing reassembly first). > I agree. Specifically, I think there should be a requrement that intermediate devices don't rely on doing DPI into transport layer, or if they need it then they should do some sort of pseudo reassmbly as Joe alludes to. Note that section 4.4 describes the problem of of fragmentation going through a load balancing (e.g. ECMP) where transport ports are used in the algorithm. This is solved in IPv6 by using flow label in the hash instead of transport layer ports, so I think that use of flow label for this purpose should be recommended somewhere in section 7. Tom > Joe > >> On Jul 24, 2018, at 12:42 PM, Wassim Haddad <wassim.haddad@ericsson.com> wrote: >> >> Dear all, >> >> We would like to start a WG adoption call for draft-bonica-intarea-frag-fragile (“IP Fragmentation Considered Fragile”). >> >> https://www.ietf.org/id/draft-bonica-intarea-frag-fragile-03.txt >> >> >> Please indicate your preferences on the mailling list. The deadline is August 10th. >> >> >> Thanks, >> >> Juan & Wassim >> _______________________________________________ >> Int-area mailing list >> Int-area@ietf.org >> https://www.ietf.org/mailman/listinfo/int-area > > _______________________________________________ > Int-area mailing list > Int-area@ietf.org > https://www.ietf.org/mailman/listinfo/int-area
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- [Int-area] WG Adoption Call: IP Fragmentation Con… Wassim Haddad
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Black, David
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Eric Vyncke (evyncke)
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ron Bonica
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ron Bonica
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Black, David
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ron Bonica
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Fernando Gont
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Fernando Gont
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Fernando Gont
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Fernando Gont
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Brian E Carpenter
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Wassim Haddad
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Mikael Abrahamsson
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joel Jaeggli
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Christian Huitema
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Ole Troan
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Toerless Eckert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… tom
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Christian Huitema
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Christian Huitema
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Templin (US), Fred L
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Tom Herbert
- Re: [Int-area] WG Adoption Call: IP Fragmentation… Joe Touch