nanog mailing list archives

Re: PC Bozo's World bites again (CNN, too)


From: Dean Robb <pceasy () norfolk infi net>
Date: Thu, 28 May 1998 12:19:59 -0400

At 20:15 5/27/98 -0500, you wrote:
Cut the MTU, get rid of the problem, and the system "seems" faster on the
Internet.  The reason is that you aren't dropping frames on the floor 
any longer.

Yup.  I got an apparent 12% faster connection and reduced packet loss by
setting my MTU to 576 (using MTUSpeed, a handy little program).  

Does this have anything to do with CTS/RTS and flow control?  Nope.  Its a
genuine, no-bullshit, honest-to-god probelm in the code that is worked
around 
by doing this.

The official explanation is that W95 (and W98, as far as I can tell) has
packet sizes set to 1500 for Ethernet LAN transmission and uses the same
sizes for Internet TCP/IP connections.  If you're not on an Ethernet,
adjusting the MTU gives you a better 'Net connection.




Spam(tm) is pressed meat.  Spammers should be too.

Dean Robb
PC-Easy 
On-site computer services
(757) 495-EASY [3279]



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