mailing list archives
Re: Common operational misconceptions
From: Valdis.Kletnieks () vt edu
Date: Mon, 20 Feb 2012 09:42:15 -0500
On Mon, 20 Feb 2012 15:42:56 +0900, Masataka Ohta said:
George Bonser wrote:
It is seemingly working well means there is not much PMTU changes,
which means we had better assumes some PMTU (1280B, for example) and
use it without PMTUD.
It depends on the OS and the method being used. If you set the
option to "2" on Linux, it will do MTU probing constantly and
react to MTU changes.
It actually does nothing.
Did you find this by just reading RFCs, or by actual code inspection?
the hosts are keep assuming PMTU of 1400B and if local MTU
is 1500B or less, no discovery is performed because "the
probe size range is small enough".
And if the local MTU is 9000?