[150256] in North American Network Operators' Group
RE: Common operational misconceptions
daemon@ATHENA.MIT.EDU (George Bonser)
Mon Feb 20 11:48:44 2012
From: George Bonser <gbonser@seven.com>
To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
Date: Mon, 20 Feb 2012 16:47:42 +0000
In-Reply-To: <4F41EB70.3080401@necom830.hpcl.titech.ac.jp>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> George Bonser wrote:
>=20
> >> 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.
>=20
> > 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.
>=20
> It actually does nothing.
Must be magic then, because it works for me. I've got a few dozen servers =
with MTU 7500 that aren't having a bit of trouble talking to anyone.
