Verifying Open vSwitch configuration

Verify the Open vSwitch configuration for the applicable network that you configured.

1. If you configured a GRE network, verify that there is at least one port beginning with "gre-" created on the br-tun bridge. Also, verify that the local and remote IP addresses that are listed in the options field match the IP addresses of the controller and the compute node.

   > ovs-vsctl show
   
       Bridge br-tun
           Port br-tun
               Interface br-tun
                   type: internal
           Port "gre-2"
               Interface "gre-2"
                   type: gre
                   options: {in_key=flow, local_ip="192.168.0.1", 
   out_key=flow, remote_ip="192.168.0.2"}
           Port patch-int
               Interface patch-int
                   type: patch
                   options: {peer=patch-tun}

2. If you configured a flat or VLAN network, verify you see the following output:
   1. Verify that a bridge was created matching the name that you specified in the openstack.network.openvswitch.bridge_mappings property. Typically the bridge is called br-ethX.
   2. Verify that port ethX was added to bridge br-ethX as an interface.
   3. Verify that port phy-br-ethX was added to bridge br-ethX as an interface.
   4. Verify that port int-br-ethX was added to bridge br-int as an interface.

   > ovs-vsctl show
   
       Bridge br-int
           Port br-int
               Interface br-int
                   type: internal
           Port "int-br-eth1"
               Interface "int-br-eth1"
       Bridge "br-eth1"
           Port "br-eth1"
               Interface "br-eth1"
                   type: internal
           Port "eth1"
               Interface "eth1"
           Port "phy-br-eth1"
               Interface "phy-br-eth1"

   Note: The previous example was truncated to display only what you must verify. If you do not see "phy-br-ethX' and 'int-br-ethX' ports in the ovs-vsctl show output (c and d from the previous list), verify that neutron-openvswitch-agent is active (service neutron-openvswitch-agent status) and check the error log in /var/log/neutron/openvswitch-agent.log.
3. If you configured a VXLAN network, verify that you see the following output.
   • Verify that there is at least one port beginning with vxlan- created on the br-tun bridge.
   • Verify that the local and remote IP addresses that are listed in the options field match the IP addresses of the controller and the compute node.

   > ovs-vsctl show
   
       Bridge br-tun
           Port patch-int
               Interface patch-int
                   type: patch
                   options: {peer=patch-tun}
   
           Port br-tun
               Interface br-tun
                   type: internal
   
           Port "vxlan-0a0b010b"
               Interface "vxlan-0a0b010b"
                   type: vxlan
                   options: {df_default="true", in_key=flow, local_ip="x.x.x.x", out_key=flow, remote_ip="y.y.y.y"}

4. By default, the L3 agent and IP movement is enabled. Unless you disabled them, verify that you can see the following output. Specifically, you must verify that the port ethX was added to the external network bridge (default is br-ex).

   > ovs-vsctl show
   
       Bridge br-ex
           Port br-ex
               Interface br-ex
                   type: internal
           Port "eth2"
               Interface "eth2"