Internet Exchanges supporting jumbo frames?

Wed Mar 9 14:34:19 UTC 2016

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