RE: [Xen-devel] Ethernet MTU

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> > Even 802.1q tags require explicitly lowering the mtu to 1496 to
work.
> 
> I thought the IP layer was supposed to fragment packets if they do not
> fit in the underlying ethernet's MTU.
> 
> (What's the point about fragmentation, otherwise?)

802.1q is an ethernet protocol (vlan tagging for trunking multiple
vlan's over the same physical interface). It lives under IP.

James

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