ifcfg-br-ex

DEVICE=br-ex
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=172.24.4.10
GATEWAY=172.24.4.1
DNS1=172.24.4.1
NETMASK=255.255.255.240
ONBOOT=yes

ifcfg-em2

DEVICE=em2
TYPE=Ethernet
HWADDR=78:2B:CB:39:46:6A
ONBOOT=yes
TYPE=OVSPort
DEVICETYPE=ovs
OVS_BRIDGE=br-ex

ip

[root@hv1 ~(keystone_admin)]# ip a l br-ex
52: br-ex: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN 
    link/ether 78:2b:cb:39:46:6a brd ff:ff:ff:ff:ff:ff
    inet 172.24.4.10/28 brd 172.24.4.15 scope global br-ex
    inet6 fe80::5cb7:a1ff:febb:e72/64 scope link 
       valid_lft forever preferred_lft forever
       
[root@hv1 ~(keystone_admin)]# ip a l em1
2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 78:2b:cb:39:46:68 brd ff:ff:ff:ff:ff:ff
    inet 172.24.1.229/24 brd 172.24.1.255 scope global em1
    inet6 fe80::7a2b:cbff:fe39:4668/64 scope link 
       valid_lft forever preferred_lft forever
       
[root@hv1 ~(keystone_admin)]# ip a l em2
3: em2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 78:2b:cb:39:46:6a brd ff:ff:ff:ff:ff:ff
    inet6 fe80::7a2b:cbff:fe39:466a/64 scope link 
       valid_lft forever preferred_lft forever

ovs-vsctl

[root@hv1 ~(keystone_admin)]# ovs-vsctl show
39910e0d-9ecc-4261-80df-951687ecf094
    Bridge br-ex
        Port "em2"
            Interface "em2"
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-int
        Port int-br-ex
            Interface int-br-ex
        Port "qvo3829b071-ea"
            tag: 1
            Interface "qvo3829b071-ea"
        Port "qr-685f3692-4f"
            tag: 2
            Interface "qr-685f3692-4f"
                type: internal
        Port br-int
            Interface br-int
                type: internal
        Port "tap5bc69bfb-c2"
            tag: 2
            Interface "tap5bc69bfb-c2"
                type: internal
    ovs_version: "1.11.0"

ping

[root@hv1 ~(keystone_admin)]# ping -I br-ex 172.24.4.1
PING 172.24.4.1 (172.24.4.1) from 172.24.4.10 br-ex: 56(84) bytes of data.
64 bytes from 172.24.4.1: icmp_seq=1 ttl=64 time=0.514 ms
64 bytes from 172.24.4.1: icmp_seq=2 ttl=64 time=0.172 ms
64 bytes from 172.24.4.1: icmp_seq=3 ttl=64 time=0.175 ms

ping-remote-to-vm

➜  ~  ssh root@172.24.4.13
^C
➜  ~  ping 172.24.4.13    
PING 172.24.4.13 (172.24.4.13): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
36 bytes from 172.24.1.1: Destination Host Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 5400 f649   0 0000  40  01 264b 172.24.1.215  172.24.4.13 

Request timeout for icmp_seq 4
36 bytes from 172.24.1.1: Destination Host Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 5400 7108   0 0000  40  01 ab8c 172.24.1.215  172.24.4.13