re: MTUs on different paths

Craig Partridge <craig@NNSC.NSF.NET> Mon, 11 December 1989 13:49 UTC

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Cc: mtudwg
Subject: re: MTUs on different paths
Date: Mon, 11 Dec 89 08:49:01 -0500
From: Craig Partridge <craig@NNSC.NSF.NET>

> There is, however, a problem with the RFC-1063 approach of allowing
> the Reply MTU to be piggybacked on any returning datagram -- the
> association between the MTU and its corresponding TOS or other
> route-influencing options may be lost.

    Well, this is one of the two approaches.

    The other approach has TCP initiating the options and TCP, could
conceivably, retrieve the option and direct IP as to the TOS being used.