[e2e] Internet packet size distribution

[John Heidemann]

On Mon, 24 Oct 2005 11:05:25 PDT, "Ghanwani, Anoop" wrote: 
> 
>> We traced the recommendations for 1300B MTU to several sources. For
>> example VPN MTU recommendations, see our web page.
>
>Could this be because of IPv6 traffic being tunneled in IPv4?
>IPv6 requires that the link layer support an MTU of at least
>1280 bytes.  Add 20 bytes for an IPv4 tunnel header and you
>get 1300 bytes.

Good point.

My assumption is that VPN'ed traffic is much, much more common than
tunneled IPv6 (particularly at USC where all wireless was VPNed until
recently), but it would be good to validate that assumption.

   -John