Re: [Xen-users] Xenbr0 doesn't talk to outside

[Jeroen Torrekens <jeroen.torrekens@xxxxxxxxxxx>]

you_bear zhou wrote:
> brctl show :
>
> bridge name         bridge id           STP enabled          interfaces
>
> xenbr0                  8000.feffffffffff        
> no                         vif 9.0
> it seems xenbr0 is started, any other suggestions?
>
>
> On Tue, Jun 17, 2008 at 5:13 PM, you_bear zhou <youbear.zhou@xxxxxxxxx 
> <mailto:youbear.zhou@xxxxxxxxx>> wrote:
>     thank you for quick answer !
>      
>     I set "bridge=xenbr0" in domU, but I didn't check "brctl show"
>      
>     I'll check it tomorrow ( the computer is not at hand right now :(  )
>      
>     On 6/17/08, *Ray Barnes* <tical.net <http://tical.net>@gmail.com
>     <http://gmail.com>> wrote:
>
>         I'm no expert on bridged networking under Xen (I only use
>         routed networking in production), but start by making sure
>         "bridge=xenbr0" is in your domU vif config file (make sure you
>         have a vif setup too....), and check the dom0 to make sure the
>         bridge is bridging your domU to the physical NIC using "brctl
>         show".
>          
>         -Ray
>          
>         On Tue, Jun 17, 2008 at 10:11 AM, you_bear zhou
>         <youbear.zhou@xxxxxxxxx <mailto:youbear.zhou@xxxxxxxxx>> wrote:
>
>             Hi, all,
>
>             I installed xen 3.0.3 on Ubuntu 7.10, and I set up VM
>             dapper using xen-tools. Now, my VM can be boot
>             successfully but without network.
>
>             I used wireshark and tcpdump to trace, I found that the vm
>             sent requests to xenbr0, but xenbr0 didn't send them out
>             !  In dom0, I can't see any request from domU.
>
>             In xend.conf, I use network-bridge and vif-bridge as default.
>
>             Maybe this problem is very simple, but as a beginner, it
>             puzzled me a lot!
>
>             I do appreciate if someone can help me out. !
>
>             Best,
>
>             -- 
>             Fangfei Zhou
>             ----------------------------------------------------
>             I have a dream, fly to the sky
>             _______________________________________________
>             Xen-users mailing list
>             Xen-users@xxxxxxxxxxxxxxxxxxx
>             <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx>
>             http://lists.xensource.com/xen-users
>
>
>
>
>
>     -- 
>     Fangfei Zhou
>     ----------------------------------------------------
>     I have a dream, fly to the sky
Hi,

Sorry for my empty mail... Wrong button ;-)

The xenbr0 is started, but is not connected to a physical interface 
somewhere. So the traffic is on the bridge, but it cannot get out. You 
should try something like brctl addif xenbr0 eth0
Or search the logs why the xen startup scripts did not do this for you.

Jeroen

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