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

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
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            Xen-users mailing list
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-- 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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