Re: End System PMTUD behavior question
Rémi Denis-Courmont <rdenis@simphalempin.com> Wed, 21 January 2009 19:33 UTC
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From: Rémi Denis-Courmont <rdenis@simphalempin.com>
Organization: Remlab.net
To: ipv6@ietf.org
Subject: Re: End System PMTUD behavior question
Date: Wed, 21 Jan 2009 21:33:27 +0200
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Cc: "Huang, Frank" <fhuang@mitre.org>, "Sherman, Kurt T." <ksherman@mitre.org>, "Liou, Chern" <csliou@mitre.org>, "steve_eiserman@uscourts.gov" <steve_eiserman@uscourts.gov>, "ipv6-bounces@ietf.org" <ipv6-bounces@ietf.org>, "v6ops@ops.ietf.org" <v6ops@ops.ietf.org>, "Grayeli, Parisa" <pgrayeli@mitre.org>
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us avez écrit : > Colleagues, > > We have been performing some PMTUD tests and have found that different > operating systems handle PMTUD differently. Specifically, we found that the > "ping" application behaves in the following way when the PMTU is set to > 1280 and a 1500 octet ICMPv6 echo request is sent to that routed path. The > hosts we tested: I'm afraid ping applications are not representative of what the operating system IP stacks do. Besides, there are no standards regarding the behavior of "ping" in case of Path MTU problems; it's really up to the implementor of each "ping" whether to report an error or to transparently fragment. The behavior of real transport protocols, such as TCP, DCCP and SCTP is more interesting when it comes to evaluating operating systems and their IP stacks. -- Rémi Denis-Courmont http://www.remlab.net/ -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
- End System PMTUD behavior question Dunn, Jeffrey H.
- Re: End System PMTUD behavior question Rémi Denis-Courmont
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- Re: End System PMTUD behavior question Thomas Peterson
- RE: End System PMTUD behavior question Hemant Singh (shemant)
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- Re: End System PMTUD behavior question Thomas Peterson
- RE: End System PMTUD behavior question Hemant Singh (shemant)
- RE: End System PMTUD behavior question Peter.Hunt
- Re: End System PMTUD behavior question Mark Andrews
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- Re: End System PMTUD behavior question Mark Andrews
- RE: End System PMTUD behavior question Pekka Savola
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- RE: End System PMTUD behavior question Dunn, Jeffrey H.
- Re: End System PMTUD behavior question Thomas Peterson