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xen-users
RE: [Xen-users] XCP: Networking, bridges and bondings
Hi,
> > I have configure it now XCP with bonding (as described in the
> > documentation), but it has a strange behaviour:
> >
> > * bond0 doesn't appear in /proc/net/bonding
> > * With brctl show I get:
As Pasi says, XCP is now using the openvswitch code rather than the linux
bridging code.
The openvswitch handles bonding and VLAN tagging differently to the stock linux
code. There is a small compatibility shim but it's incomplete (and will never
be perfect). IIRC the vswitch represents bonds as an association of switch
ports and considers VLANs to be a property of switch ports (with guest VIFs
plugged into those). Rather than use the compatibility shim (brctl etc) I think
you'd get a clearer picture if you used the openvswitch-specific commands.
Check out the commands ovs-* in dom0. It's probably worth checking out the
openvswitch mailing lists too, for low-level details.
Cheers,
Dave
> >
> > # brctl show
> > bridge name bridge id STP enabled interfaces
> > xapi1 0000.002481a6a178 no bond0
> > eth0
> > eth3
> > xenbr1 0000.002481a6b1c6 no eth1
> > xenbr2 0000.00237da6e658 no eth2
> >
> > that is, eth0, eth3 and bond0 are included in the bridge. I have
> tried
> > to manually remove eth0 (or eth3), but I can't:
> >
> > # brctl delif xapi1 eth0
> > can't delete eth0 from xapi1: Operation not supported
> >
> > * Another problem is the MAC associated with xapi1 (my management
> > interface) is discover from the other switches of my network in two
> > interfaces, that is, the one that connect them to the switch where I
> > have eth0 connected to, and the the switch where I have eth1
> connected
> > to. Is this correct?
> > * When I boot the machine (or when it has a lot of time of inactivity,
> > it's a test environment), I have the 3 o 4 first packages duplicated.
> Is
> > this correct?
> >
> > When the same configuration, but with XenServer 5.0 (citrix), the
> bond0
> > appears at /proc/net/bonding, ethX interfaces are not included in
> > bridges and I don't have duplicate packages.
> >
>
> Citrix XenServer 5.x uses Linux bridge support in dom0 kernel,
> but XCP uses OpenVswitch instead of Linux bridging..
>
> -- Pasi
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
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