[Users] Configuring MTU

Itamar Heim iheim at redhat.com
Sat Mar 31 14:50:45 EDT 2012


On 03/30/2012 06:58 PM, Nathan Stratton wrote:
> On Fri, 30 Mar 2012, Livnat Peer wrote:
>
>> On 29/03/12 22:16, Nathan Stratton wrote:
>>>
>>> Is there a way to configure MTU on a guest by guest basis? All our bond
>>> interfaces are configured as 9000 byte MTU, but we have a few guests
>>> that don't support that and need 1500 byte setting.
>>
>> Hi Nathan,
>>
>> There are patches in Gerrit for configuring the MTU on a Network basis.
>> I hope these patches will be merged next week.
>
> Great!!
>
>> http://gerrit.ovirt.org/#change,2207
>>
>> Any reason you want to configure it on a guest by guest basis and not on
>> a network basis?
>
> Sure, some of our VMs such as Acme Packet OSE have custom kernels and
> don't support jumbo frames.

I think you would need to separate these to another logical network with 
a non jumbo frames mtu size.
you can use vlan's and connect both logical networks to the same 
physical interface.


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