Re: yet another MTU discovery scheme

Steve Deering <> Sun, 25 February 1990 20:54 UTC

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Date: 25 Feb 1990 12:38-PST
From: Steve Deering <>
Subject: Re: yet another MTU discovery scheme
Cc: mtudwg
To: Philippe Prindeville <>
Message-Id: <90/02/25>
In-Reply-To: Philippe Prindeville's message of Sun, 25 Feb 90 140055 -0100

>	Your scheme (actually, as you point out it has come up before) would
>	seem to suffer when trying to find the MTU if a Can't Fragment message
>	is lost en route...  Depending on the search technique, it could cause
>	quite poor behaviour.

A lost Can't Fragment message simply results in transport-layer timeout
and retransmission, just like any packet loss.  No big deal.

I don't understand your comment about "search technique".  The whole
point of my variation on the old scheme is that it doesn't require a