North American Network Operators Group

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Re: Strange public traceroutes return private RFC1918 addresses

  • From: Petri Helenius
  • Date: Tue Feb 03 13:43:58 2004

Niels Bakker wrote:

* [email protected] (Petri Helenius) [Tue 03 Feb 2004, 15:42 CET]:

Me wonders why people ask for 40 byte packets at linerate if the mtu
is supposedly larger?

Support for the worst-case scenario. Same why you spec support for
a BIGINT-line ACL without excessive impact on forwarding capacity.

Why large MTU then? Most modern ethernet controllers don�t care if you�re sending
1500 or 9000 byte packets. (with proper drivers taking advantage of the features there)
If you�re paying for 40 byte packets anyway, there is no incentive to ever go beyond 1500
byte MTU.