[111159] in North American Network Operators' Group
Re: can I ask mtu question
daemon@ATHENA.MIT.EDU (Ricky Beam)
Fri Jan 30 18:43:52 2009
Date: Fri, 30 Jan 2009 18:43:37 -0500
To: nanog@nanog.org
From: "Ricky Beam" <jfbeam@gmail.com>
In-Reply-To: <20090130220000.GA10014@mx.ytti.net>
Errors-To: nanog-bounces@nanog.org
On Fri, 30 Jan 2009 17:00:00 -0500, Saku Ytti <saku+nanog@ytti.fi> wrote:
> Which standard are you referring to? AFAIK, nothing above 1500 is
> standardised
None that have ever been accepted. From a quick google for manufacturer
support, 9216 looks like the most popular number. But, as I said, it
boils down to the largest frame *every* device on the LAN will accept. If
there is a single device that only supports "9000", then that's your
limit. And if there's a single non-JF device in the LAN, it throws a
wrench into the whole thing. (This appears to be one of the sticking
points as to why IEEE won't accept the addition of JF to any specs.)
--Ricky
PS: The topic pops up again with super-jumbo frames in 10G networks.
