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RE: [Int-area] FW: Last Call: 'Fragmentation Considered Very Harmful'to Informational RFC (draft-heffner-frag-harmful)

"Templin, Fred L" <Fred.L.Templin@boeing.com> Mon, 16 October 2006 21:08 UTC

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Subject: RE: [Int-area] FW: Last Call: 'Fragmentation Considered Very Harmful'to Informational RFC (draft-heffner-frag-harmful)
Date: Mon, 16 Oct 2006 13:09:16 -0700
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From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: Joe Touch <touch@ISI.EDU>, Matt Mathis <mathis@psc.edu>
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Joe,

> This method uses conventional PMTU, i.e., sends large packets and
resets
> the MTU down when ICMP NACKs are received, vs. Fred's draft which
> involves probes. It has disadvantages (susceptible to blackholing) but
> doesn't involve a new header either, and might be worth noting.

FWIW, the period during which the blackholing occurs could
be indefinite if the network doesn't deliver the ICMPs. I
agree that the ICMPs are nice to have, but the mechanism
should work even if they are absent.

Fred
fred.l.templin@boeing.com 

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