MTU of the Internet?
Dirk Harms-Merbitz
dirk at hermosa.power.net
Wed Feb 4 18:26:10 UTC 1998
Could be related to dialup people wanting lower latencies in
multiplayer games.
Dirk
On Wed, Feb 04, 1998 at 12:05:29PM -0500, Perry E. Metzger wrote:
>
> Peter Ford writes:
> > Several people have noted to the Microsoft Support and Product groups that
> > they want the Windows 95 PPP MTU to be set to 576 (down from 1500). this
> > change is in Windows 98.
> >
> > The reason for this change cited by many customers is that many ISPs have
> > 576 MTUs set "inside" their networks and packets get fragmented.
>
> I know of no modern networking media in common use at ISPs that has an
> MTU below 1000, and have not heard of ISPs with MTUs that low. Also,
> the ISP's PPP could simply negotiate the MTU down -- it need not
> accept a large MTU, no matter what Windows would like. The entire
> story sounds, to say the least, fishy.
>
> BTW, if Windows 95 is doing path MTU discovery, it should all be
> irrelevant.
>
> Perry
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