gistfile1.txt

[stack@localhost ~]$ sudo ovs-vsctl show
3b3e06cc-fef9-4648-82f3-bdbcbc0a980a
    Bridge brovc
        Port brovc
            Interface brovc
                type: internal
    Bridge br-api
        Port br-api
            Interface br-api
                type: internal
    Bridge brbm
        Port brbm
            Interface brbm
                type: internal
    ovs_version: "2.5.0"
[stack@localhost ~]$ sudo ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: em3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether ec:f4:bb:c0:bc:7c brd ff:ff:ff:ff:ff:ff
3: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT qlen 1000
    link/ether ec:f4:bb:c0:bc:78 brd ff:ff:ff:ff:ff:ff
4: em4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether ec:f4:bb:c0:bc:7d brd ff:ff:ff:ff:ff:ff
5: em2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT qlen 1000
    link/ether ec:f4:bb:c0:bc:7a brd ff:ff:ff:ff:ff:ff
6: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether f2:b4:05:58:ce:89 brd ff:ff:ff:ff:ff:ff
7: br-api: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether b2:7b:91:ba:e5:46 brd ff:ff:ff:ff:ff:ff
8: brbm: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether 46:34:5a:f1:a0:45 brd ff:ff:ff:ff:ff:ff
32: brovc: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/ether d6:8f:3a:93:57:45 brd ff:ff:ff:ff:ff:ff
33: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT 
    link/ether 52:54:00:aa:b5:10 brd ff:ff:ff:ff:ff:ff
34: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT qlen 500
    link/ether 52:54:00:aa:b5:10 brd ff:ff:ff:ff:ff:ff
71: brext: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT 
    link/ether 52:54:00:e2:26:a2 brd ff:ff:ff:ff:ff:ff
72: brext-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master brext state DOWN mode DEFAULT qlen 500
    link/ether 52:54:00:e2:26:a2 brd ff:ff:ff:ff:ff:ff

gistfile2.txt

[stack@localhost ~]$ virsh start undercloud
error: Failed to start domain undercloud
error: failed to retrieve file descriptor for interface: Transport endpoint is not connected

network.xml

[stack@localhost ~]$ sudo virsh net-dumpxml overcloud
<network>
  <name>overcloud</name>
  <uuid>27380d9a-3c5c-4464-b314-e40c9bc15063</uuid>
  <forward mode='bridge'/>
  <bridge name='brovc'/>
  <virtualport type='openvswitch'/>
</network>

undercloud.xml

[stack@localhost ~]$ virsh dumpxml undercloud
<domain type='kvm'>
  <name>undercloud</name>
  <uuid>4facb287-6f3c-4a6b-8a5d-3cbd3527dfed</uuid>
  <memory unit='KiB'>12582912</memory>
  <currentMemory unit='KiB'>12582912</currentMemory>
  <vcpu placement='static'>8</vcpu>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.0.0'>hvm</type>
    <boot dev='hd'/>
    <bootmenu enable='no'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <cpu mode='host-model'>
    <model fallback='allow'/>
  </cpu>
  <clock offset='utc'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='volume' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source pool='oooq_pool' volume='undercloud.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </disk>
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='bridge'>
      <mac address='00:a3:da:a2:ee:8b'/>
      <source bridge='brovc'/>
      <virtualport type='openvswitch'>
        <parameters interfaceid='a237739a-8256-4e69-bbb0-f16f8efdaeb2'/>
      </virtualport>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
  </devices>
</domain>