unable to ping instances

I deployed Kolla-Kubernetes on multi-node, but can't ping private IP of instance.
OVS information is below.

in network-node
```
()[root@network /]$ ovs-vsctl show
987956ec-393e-476f-ae86-0801dd2b1b2d
    Manager "ptcp:6640:0.0.0.0"
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
        Port br-int
            Interface br-int
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "tap885f193a-3d"
            tag: 1
            Interface "tap885f193a-3d"
                type: internal
        Port "qr-75b7ea85-ee"
            tag: 1
            Interface "qr-75b7ea85-ee"
                type: internal
        Port "qg-4f4bde25-a9"
            tag: 2
            Interface "qg-4f4bde25-a9"
                type: internal
    Bridge br-ex
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
        Port br-ex
            Interface br-ex
                type: internal
        Port "eth1"
            Interface "eth1"
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port "vxlan-ac1e0153"
            Interface "vxlan-ac1e0153"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="172.30.1.82", out_key=flow, remote_ip="172.30.1.83"}

```

in compute-node
```
()[root@compute /]$ ovs-vsctl show
f06acf65-2f1a-43f2-acfe-b0b3eac2ad89
    Manager "ptcp:6640:0.0.0.0"
    Bridge br-ex
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
        Port br-ex
            Interface br-ex
                type: internal
        Port "eth1"
            Interface "eth1"
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port "vxlan-ac1e0152"
            Interface "vxlan-ac1e0152"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="172.30.1.83", out_key=flow, remote_ip="172.30.1.82"}
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "qvo699b7638-e3"
            tag: 1
            Interface "qvo699b7638-e3"
        Port br-int
            Interface br-int
                type: internal
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
```