[188093] in North American Network Operators' Group
Re: Internet Exchanges supporting jumbo frames?
daemon@ATHENA.MIT.EDU (Job Snijders)
Wed Mar 9 09:35:31 2016
X-Original-To: nanog@nanog.org
Date: Wed, 9 Mar 2016 15:34:19 +0100
From: Job Snijders <job@instituut.net>
To: Kurt Kraut <listas@kurtkraut.net>
In-Reply-To: <CAPbn28=P8A1HGwF1x_8OBMtmExdfDBu3OHbomzgHtMAKStvuwA@mail.gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Hi Kurt,
On Wed, Mar 09, 2016 at 11:26:35AM -0300, Kurt Kraut via NANOG wrote:
> I'm trying to convince my local Internet Exchange location (and it is not
> small, exceed 1 terabit per second on a daily basis) to adopt jumbo frames.
> For IPv6 is is hassle free, Path MTU Discovery arranges the max MTU per
> connection/destination.
>
> For IPv4, it requires more planning. For instance, two datacenters tend to
> exchange relevant traffic because customers with disaster recovery in mind
> (saving the same content in two different datacenters, two different
> suppliers). In most cases, these datacenters are quite far from each other,
> even in different countries. In this context, jumbo frames would allow max
> speed even the latency is from a tipical international link.
>
> Could anyone share with me Internet Exchanges you know that allow jumbo
> frames (like https://www.gr-ix.gr/specs/ does) and how you notice benefit
> from it?
You might find this presentation interesting:
https://www.nanog.org/sites/default/files/wednesday.general.steenbergen.antijumbo.pdf
The presenter argues: "Internet-wide Jumbo Frames will probably cause
infinitely more harm than good under the current technology."
Kind regards,
Job
