[Ovirt-devel] Jumbo frame support on nodes

[Daniel P. Berrange]

On Tue, Sep 21, 2010 at 01:53:33AM +1000, Justin Clacherty wrote:
>  On 20/09/2010 10:52 PM, Daniel P. Berrange wrote:
> >
> >When setting up jumbo frames using bridging you need to several things
> >
> >  - Set MTU on the physical NIC
> >  - Set MTU on the bridge
> >  - Set MTU on the TAP devices
> >
> >you must do the first two before the bridge is brought online. when libvirt
> >creates a TAP device for a guest, it will automatically copy the MTU of
> >the bridge to the TAP device. So if ovirt is configuring the physical NIC
> >and bridge with a suitably large MTU, the libvirt bit will 'just work'.
> 
> Ok.  So what's needed for this is the ability to set the MTU size in the 
> user interface and for that to be sent on to the host when it's network 
> is configured at boot.  Would this be best done when editing the network 
> on a particular host, when adding networks in the network section of the 
> user interface, or in both places?

I think either probably works.

Daniel
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