Example: virtual switch with OSA devices as bridge port

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If possible, use bonded ports for OSA-based virtual switches to configure for increased availability.

About this task

This example creates a virtual switch, vs_osa0, that groups the network interfaces enc1108 and enca112 to a bonded interface, vsbond0:
Figure 1. Virtual switch with a bonded interface

This graphic shows a virtual switch with a bonded interface.

Figure 1 shows the virtual switch with just two ports that connect to the bonded interfaces. When virtual servers connect to the switch, libvirt automatically creates the required switch ports.

Procedure

  1. Verify that the OSA network-devices are configured as bridge ports.
    # lszdev 0.0.1108,0.0.a112 --columns NAMES,ATTR:bridge_state
ID              ATTR:bridge_state
enc1108   active
enca112   active
  2. Create the virtual switch.
    # ovs-vsctl add-br vs_osa0
# ovs-vsctl show
3935bfec-241e-4610-a555-9e6f60987f87
    Bridge "vs_osa0"
        Port "vs_osa0"
            Interface "vs_osa0"
                type: internal
    ovs_version: ...
  3. Create an uplink port.
    # ovs-vsctl add-bond vs_osa0 vsbond0 enc1108 enca112
# ovs-vsctl show
...
   Bridge "vs_osa0"
        Port "vsbond0"
            Interface "enc1108"
            Interface "enca112"
        Port "vs_osa0"
            Interface "vs_osa0"
                type: internal
...