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Re: [Xen-devel] Re: [Xen-users] Release 0.9.10 of GPL PV Drivers for Win

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] Release 0.9.10 of GPL PV Drivers for Windows / jumbo frames and xen netback changes
From: Ben Guthro <bguthro@xxxxxxxxxxxxxxx>
Date: Tue, 17 Jun 2008 08:36:36 -0400
Cc: James Harper <james.harper@xxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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We (VirtualIron) do support jumbo frames - but currently only for iSCSI traffic to dom0 - not for inter-domain communications... ie - not over the bridge/vif. So - I'm not sure that this is what you're talking about here...


Pasi Kärkkäinen wrote on 06/17/2008 08:28 AM:
On Tue, Jun 17, 2008 at 09:07:23PM +1000, James Harper wrote:
  
Hi!

Have you thought about adding jumbo frame support (mtu 9000) ?

There was some discussion about this earlier, but I guess there was no
conclusion.. obviously this feature needs configuration on dom0 too
(vif,bridge,peth).

      
Yes I've thought about it, but I don't think it's supported by netback 
so there's not a lot I can do. I think some changes need to be made so 
that netback and netfront/gplpv can tell each other the MTU in use.

    

Hmm.. OK. 

Somehow I thought some Xen implementation (Citrix XenServer or VirtualIron)
supported jumbos.. but I'm not sure about that. I'd have to check again.

Does someone else have more information about this? 

-- Pasi

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