Re: bridging a gre tunnel to tap0 + vif21.0 (xen)
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Scott Edwards wrote:
> Eventually I would like to have two Ethernet interfaces, one for
> management, and another for xen domU's I temporarly tried a usb
> ethernet adapter, but it didn't like bridging. Turns out gre tunnels
> don't either?
>
> dom0:/etc/xen# brctl show
> bridge name bridge id STP enabled interfaces
> xenbr0 8000.5292b96f833b yes tap0
> vif21.0
> dom0:/etc/xen# brctl addif xenbr0
> can't add xen2pyro to bridge xenbr0: Invalid argument
>
>
> My reasoning behind this is, forwarding momentarily stops when ever the
> bridge has an interface change (add/remove). The time for stp to
> converge just drives me batty.
Do you need stp? I've found it usually causes more problems than it
solves so you could just shut it off.
> Is there another low overhead layer2 tunnel I can use? Can I bridge to
> a vlan? I have an intel 510T (old beast) that'll do vlans, but I don't
> think I have the management software (winblowz powered) to set anything up.
I think you should be able to bridge vlans, I know you can bridge to an
openvpn tap device.
> My primary goal at this point, would be to allow the gre tunnel to join
> the bridge.
I think your problem here is bridging is layer 2 and gre tunnels are
layer3. Do you need bridging? Could you just do layer 3 routing?
Regards,
Tod Detre
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