Verifying Open vSwitch Configuration

In order for the Compute VMs on one server to talk to the Compute VMs of another server, a physical NIC must be added to bridge "br-int". By default, ens34 is added automatically to bridge “br-int” after the stack-openstack command execution. This bridge is where all VMs virtual NICs are created upon starting up a VM.

To verifying Open vSwitch configuration:

[root@junoos-control-compute1 ~]# sudo ovs-vsctl show
cdf580b3-ac43-41f8-aeda-d6c701b15535
    Bridge br-tun
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port br-tun
            Interface br-tun
                type: internal
    Bridge br-int
        fail_mode: secure
        Port "ens34"
            tag: 1
            Interface "ens34"
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port br-int
            Interface br-int
                type: internal
    ovs_version: "2.1.3" 
[root@junoos-compute2 devstack]# sudo ovs-vsctl show
cf3e3a09-4fb0-4ee5-a9bb-155d275f7f43                                  Bridge br-tun                                                    
	Port br-tun                                                           		Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-int
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "ens34"
            tag: 1
            Interface "ens34"
        Port br-int
            Interface br-int
                type: internal
    ovs_version: "2.1.3"