owmini@sowmini-virtual-machine:~/devstack/devstack$ sudo ovs-vsctl show
0352c6e8-cced-4f21-8cff-36550186b4b8
    Bridge br-int
        Port "qr-c4d5a7c3-69"
            tag: 1
            Interface "qr-c4d5a7c3-69"
                type: internal
        Port br-int
            Interface br-int
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
    Bridge br-ex
        Port "qg-f70ef8ee-65"
            Interface "qg-f70ef8ee-65"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: "1.10.2"


After the vm boots, 
admin$ sudo ovs-vsctl show
0352c6e8-cced-4f21-8cff-36550186b4b8
    Bridge br-int
        Port "tapbfd57f21-bd"
            tag: 2
            Interface "tapbfd57f21-bd"
                type: internal
        Port "qr-c4d5a7c3-69"
            tag: 1
            Interface "qr-c4d5a7c3-69"
                type: internal
        Port br-int
            Interface br-int
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "tap9de6ec10-a0"
            tag: 2
            Interface "tap9de6ec10-a0"
    Bridge br-ex
        Port "qg-f70ef8ee-65"
            Interface "qg-f70ef8ee-65"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: "1.10.2"

