[188158] in North American Network Operators' Group
Re: Internet Exchanges supporting jumbo frames?
daemon@ATHENA.MIT.EDU (Joel Maslak)
Thu Mar 10 09:58:32 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <0eedf5e0-2551-9073-5c43-3376ccd2f15d@bogus.com>
Date: Thu, 10 Mar 2016 07:58:29 -0700
From: Joel Maslak <jmaslak@antelope.net>
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Wed, Mar 9, 2016 at 9:27 AM, joel jaeggli <joelja@bogus.com> wrote:
> PMTU blackhole detection implemented in all hosts. IPv4 is lost cause in
> > my opinion (although it's strange how many hosts that seem to get away
> > with 1492 (or is it 1496) MTU because they're using PPPoE).
>
> if your adv_mss is set accordingly you can get away with
> a lot.
>
At least for TCP. EDNS with sizes > 14xx bytes just plain doesn't
universally work across the internet, yet it's the default everywhere.
