Internet Exchanges supporting jumbo frames?

Tassos Chatzithomaoglou achatz at
Wed Mar 9 22:22:28 UTC 2016

I must be missing something very obvious here, because i cannot think of any reason why an IXP shouldn't enable the maximum possible MTU on its infrastructure to be available to its customers. Then it's clearly customers' decision on what MTU to use on their devices, as long as:

  * It fits inside IXP's MTU
  * It suits with any other customer's (exchanging traffic with) MTU


Kurt Kraut via NANOG wrote on 9/3/16 16:26:
> Hi,
> 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 does) and how you notice benefit
> from it?
> Best regards,
> Kurt Kraut

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