Re: routing protocols will provide path-MTU

mogul (Jeffrey Mogul) Tue, 27 February 1990 21:20 UTC

Received: by (5.54.5/4.7.34) id AA08896; Tue, 27 Feb 90 13:20:53 PST
From: mogul (Jeffrey Mogul)
Message-Id: <>
Date: 27 Feb 1990 1320-PST (Tuesday)
To: Steve Deering <>
Cc: mtudwg
Subject: Re: routing protocols will provide path-MTU
In-Reply-To: Steve Deering <> / 26 Feb 1990 21:45-PST. <90/02/26>

    What I was trying to find out was, when it was said at the IETF meeting
    that, "Within 'a few' years, the routing protocols will provide path-MTU
    information, so MTU discovery will be unnecessary.", what did the
    speaker(s) have in mind?  And why should we believe them?

For the record, I believe that Van said this first (although Van is
welcome to deny it, since I wasn't taking contemporaneous notes).

I also want to point out that I wasn't implying that current routing
protocols would necessarily solve the problem.  I'm not a routing
protocol junkie (look at all the minds that stuff is destroying!)
so I don't know if OSPF and/or IS-IS and/or BGP could be easily
extended to carry MTU information.  In principle, though, I can't
see why any link-state protocol couldn't be changed in this way.