Open vSwitch


  • Consists of a daemon and a database server that stores the switch config in json
  • You can use a kernel daemon for better performance
  • A port is a bridge

Create a new port

ovs-vsctl add-br br0
ovs-vsctl add-port br0 eth0
ovs-vsctl show

Connect a vm to a port

  • Use virsh edit <vm> to update network config and set
<interface type='bridge'>
  <mac address='52:54:00:71:b1:b6'/>
  <source bridge='br0'/>
  <virtualport type='openvswitch'/>
  <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

Limit an interface to 1 MBit

ovs-vsctl set Interface tap0 ingress_policing_rate=1000
ovs-vsctl set Interface tap0 ingress_policing_burst=100

Set a port into a VLAN

ovs-vsctl set port <port name> tag=<VLAN ID>


ovs-vsctl add-br ovsbr1
ovs-vsctl add-bond ovsbr1 bond0 eth1 eth3

Get information

  • About the switch overall
ovs-vsctl show
  • A port
ovs-vsctl list port
  • An interface
ovs-vsctl list interface