On 15 Jul 1997, Wolfgang Rupprecht wrote:

> 
> kml@nas.nasa.gov (Kevin M. Lahey) writes:
> > In private e-mail, Perry pointed out that the BSDI stack supports it, 
> > and mentioned something about it being publicly available.
> > We have source for BSDI at work, so I didn't pursue the publicly
> > available part, but the code is definitely there.
> 
> I've used BSDI 2.1 for a year now and the MTU path discovery code,
> without fail, will "discover" 1500 byte MTU, 1460 byte tcp_mss.  This
> is the same answer as my SunOS machine that has been running a fixed
> 1460 byte tcp_mss for > 5 years now.
> 
> So unless one is on a network where the MTU is larger than 1500 (FDDI,
> 100b-tx w. hacked packet size etc.)  there is very little interesting
> for the MTU discovery code to discover.  The answer is almost
> certainly "1500".
> 
> [deleted]
> -wolfgang
> -- 
> Wolfgang Rupprecht    <wolfgang@wsrcc.com>         http://www.wsrcc.com/

What about slip or ppp, they don't ahve MTUs of 1500 do they? 

---------
Christopher R. Bowman
crb@Glue.umd.edu
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