[ovs-discuss] Question about setting Open vSwitch on top of CentOS with XEN support

Sébastien Riccio sr at swisscenter.com
Sat Jul 9 18:45:34 UTC 2011


On 09.07.2011 20:44, Sébastien Riccio wrote:
> Actually i'm interested to this question too. I'm trying to modify xen 
> network scripts in
> order to have it bind the vif to the right bridge and with the right 
> vlan tag (if using a
> bridge with trunk ports).
>
> I found that slackware has some interesting scripts here:
>
> http://palembang-slackers.org/linuxupdate/pub/slackware/addon/slackbuilds/13.1/network/openvswitch/xen/ 
>
>
> but I dont really understand how they get it to work, especially for 
> the vlan part.
>
> They have a $tag check in vif-openvswitch but the xen configuration 
> files don't allow the use of the tag attribute
> for a vif:
>
> example vif definition:
> vif = [ 'ip=10.111.5.10, bridge=trunk0, tag=85, vifname=vm1.0' ]
>
> myhost# xm create -c /cloud/data2/configs/vm1.cfg
> Using config file "/cloud/data2/configs/vm1.cfg".
> Error: Invalid vif option: tag
>
> Althought I think that this topic is more xen oriented and maybe 
> should be addressed
> the the xen mailing lists, I just wanted to share that info and know 
> if someone around
> has ideas or experience with xen (not citrix's one) + openvswitch.
>
> Sébastien
>
> On 09.07.2011 20:36, Ben Pfaff wrote:
>> On Sun, Jul 10, 2011 at 02:26:01AM +0800, 沒 wrote:
>>> * first question *
>>> if I want to make Domain-0 link to be connected, which port should I 
>>> attach
>>> to the virtual bridge... eth0? or peth0?
>> I don't understand this question.  You have one Ethernet port.  Attach
>> that one to vbr0.  Where does the other one come from?
>>
>>> * second question *
>>> do I need to attach "vif0.0" to the virtual bridge "vbr0"? (vif0.0 ->
>>> interface of Domain0's eth0)
>>> or there is no need to do so, just attach eth0 / peth0?
>> If you want packets from vif0.0 to be able to reach eth0, and vice
>> versa, then attach both of them to the same bridge.
>>
>>> * third question *
>>> how can I attach "vif1.0" to "vbr0" before Domain-1 is been created?
>> Normally you would attach vif1.0 to vbr0 after Domain-1 is created.
>>
>>> * forth question *
>>> with KVM support, INSTALL.KVM says that need to add scripts ovs-ifup /
>>> ovs-ifdown,
>>> then, with XEN support system, do we need to write scripts for ifup 
>>> / ifdown
>>> commands?
>> Yes, you need to make the corresponding changes to Xen.
>> _______________________________________________
>> discuss mailing list
>> discuss at openvswitch.org
>> http://openvswitch.org/mailman/listinfo/discuss
>>
>
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Sorry for the top post....



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