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cannot ping any neutron router interface

I have installed icehouse openstack on Ubuntu 10.04 with three node, controller, compute and network node. As per guide, I should be able to ping its gateway towards external network from any external host, but I am not able to do so. Even I cannot ping either of the interfaces from compute and controller node.

I can ping all the interfaces from network node using sudo ip netns exec qrouter-1141a29e-5728-4327-81f1-3519617e986e ping <ip address>.

I have tried all the possible troubleshooting using online help but not getting success. Kindly help me to resolve this issue.

cannot ping any neutron router interface

I have installed icehouse openstack on Ubuntu 10.04 with three node, controller, compute and network node. As per guide, I should be able to ping its gateway towards external network from any external host, but I am not able to do so. Even I cannot ping either of the interfaces from compute and controller node.

I can ping all the interfaces from network node using `

 sudo ip netns exec qrouter-1141a29e-5728-4327-81f1-3519617e986e ping <ip address>address>`.
.

I have tried all the possible troubleshooting using online help but not getting success. Kindly help me to resolve this issue.

master@openNetwork:~$ sudo ovs-vsctl show
f1c1a088-1df3-445a-ae2e-ddd2104d707d
    Bridge br-ex
        Port "eth6"
            Interface "eth6"
        Port "qg-e06dfe21-c7"
            Interface "qg-e06dfe21-c7"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-tun
        Port "gre-0a00000e"
            Interface "gre-0a00000e"
                type: gre
                options: {in_key=flow, local_ip="10.0.0.16", out_key=flow, remote_ip="10.0.0.14"}
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port br-tun
            Interface br-tun
                type: internal
    Bridge br-int
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "qr-016361b7-75"
            tag: 1
            Interface "qr-016361b7-75"
                type: internal
        Port "tapc01fc332-55"
            tag: 1
            Interface "tapc01fc332-55"
                type: internal
        Port br-int
            Interface br-int
                type: internal
    ovs_version: "2.0.1"