North American Network Operators Group

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RE: MTU of the Internet?

  • From: Tony Hain
  • Date: Fri Feb 06 16:11:16 1998

This thread has drifted all over the place and the only conclusions I can
see are:

The core infrastructure MTU is >= 1500
People are telling clients to set their Win95 MTU to 576
PMTU is randomly broken by clueless filtering
Some dial-access devices are buffer limited
A small MTU (53 byte?) would increase perceived response at the expense of

I have been an advocate of the bigger defaults is better camp, but there is
a real concern that the wrong values could actually cause more damage than
their gain is worth. If the above list is incorrect or incomplete it would
be useful for people to constructively tell Peter that now.