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-Here are some scripts that I've written for use with Xen at my site.
-In order to use these scripts with your Xen installation you'll need to copy
-both the network-openvswitch and vif-openvswitch files to your
-/etc/xen/scripts directory. You can instruct Xen to use these scripts by
-editing your /etc/xen/xend-config.sxp file and specifying these scripts as
-the default network-script and vif-script.
-
-For example, here are the entries in my xend-config.sxp file:
-
- (network-script 'network-openvswitch netdev=eth2 bridge=ovs0')
-
- (vif-script 'vif-openvswitch bridge=ovs0')
-
-If your network interface card and attached network switch support VLAN
-tagged traffic, you can place virtual machines within a seperate VLAN by
-appending a '.' and the VLAN tag number you wish the domain to use. For
-example, to have all domains default to VLAN 2 you can do the following:
-
- (vif-script 'vif-openvswitch bridge=ovs0.2')
-
-You can also specify tagged traffic in the domain configuration file.
-
-If you are hosting a hardware virtualized domain understand that the
-/etc/xen/scripts/qemu-ifup script is run instead of the vif-script specified
-in the xend-config.sxp file. You'll need to edit this file to add the port
-to the vswitch instead of using the brctl (unless of course you are using
-the appropriate kernel module to control the vswitch using brctl.) Here is
-a snippet from my qemu-ifup to handle hardware virtualized ports:
-
- if lsmod | grep -c openvswitch_mod 1> /dev/null && ! lsmod | grep -c brcompat_mod 1> /dev/null
- then
- ovs-vsctl -- --may-exist add-port $bridge $1
- else
- brctl addif $bridge $1 || true
- fi
-
-This doesn't handle tagged traffic. I'll leave that as an exercise for you.
-
-Enjoy.