Hey all,

I'm aware that this question was asked many times but...bear with me please. My network configuration looks like this: http://imgur.com/fHAmbdc .

192.168.0.0/24 is my LAN network (my PC is connected to it) 10.0.0.0/24 is a subnet I created using Openstack dashboard.

Router1 has interface on 10.0.0.0/24 network active, while gateway interface is DOWN. Every service is up and running with no errors in logs.

My deployment consists of 3 servers following the official centos 7 install guide for juno: http://docs.openstack.org/juno/install-guide/install/yum/content/ (http://docs.openstack.org/juno/instal...)

This is OVS-VSCTL output

 ovs-vsctl show
158b1140-29eb-436e-9218-f31160be1c65
    Bridge br-int
        fail_mode: secure
        Port br-int
            Interface br-int
                type: internal
        Port "qr-4856ff41-2d"
            tag: 3
            Interface "qr-4856ff41-2d"
                type: internal
        Port "tap69ce898f-47"
            tag: 4095
            Interface "tap69ce898f-47"
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "qr-a3efb45d-b0"
            tag: 1
            Interface "qr-a3efb45d-b0"
                type: internal
        Port "tap6344f8e2-f7"
            tag: 3
            Interface "tap6344f8e2-f7"
                type: internal
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
    Bridge br-ex
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
        Port "qg-bb37d248-47"
            Interface "qg-bb37d248-47"
                type: internal
        Port "eth2"
            Interface "eth2"
        Port br-ex
            Interface br-ex
                type: internal
        Port "qg-0eec4ee3-cf"
            Interface "qg-0eec4ee3-cf"
                type: internal
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port "gre-0a00011f"
            Interface "gre-0a00011f"
                type: gre
                options: {df_default="true", in_key=flow, local_ip="10.0.1.21", out_key=flow, remote_ip="10.0.1.31"}
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: "2.1.3"

ip route output

ip route
default via 192.168.0.1 dev eth0
10.0.1.0/24 dev eth1  proto kernel  scope link  src 10.0.1.21
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.215
192.168.0.0/24 dev br-ex  proto kernel  scope link  src 192.168.0.217

ifcfg-br-ex interface

DEVICE=br-ex
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=192.168.0.217
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=192.168.0.200
ONBOOT=yes

ifcfg-eth2 interface

DEVICE=eth2
HWADDR="00:15:5D:00:66:d3"
TYPE=OVSPort
DEVICETYPE=ovs
OVS_BRIDGE=br-ex
ONBOOT=yes
NAME=System eth2

Instances can ping each other but are unable to ping 192.168.0.1 which is the default gateway for ext-net. If you need any more info, please ask, I'll be happy to provide it.