Re: [Xen-users] Setting vifX.Y's MTU automatically in Xen 3

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Apr 13, 2011 at 07:33:49AM -0400, Digimer wrote:
> Hi all,
> 
>   I've got Xen 3.0 (stock as available on CentOS 5.6). I'm trying to use
> jumbo frames, but when Xen creates vifX.Y interfaces, it uses 1500. This
> brings the xenbrX bridges down to 1500, and effectively messes up
> anything thinking that it can use the larger packet size.
> 
>   So how can I make sure that all vifX.Y interfaces created by Xen are
> set to a given MTU? I've grepped the files under /etc/xen, but haven't
> seen a specific place to set it.
> 
> Thanks!
> 

I think first I'd try to modify vif-bridge script and make sure
MTU of the vif is adjusted before attaching to the bridge.

Verify you get that working, and then let's figure out what's the best way..

-- Pasi


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