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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">I have setup OpenStack with OVS. I have a single Hyper-V server running the controller and three CentOS instances(10.0.0.x) on a private subnet. I created a router in OpenStack with SNAT disabled, as I only want it to route traffic between the private subnet(10.0.0.x) and the external subnet(172.16.1.x)/internet. All of the instances can ping each other along with the external network(172.16.1.x). From the external network, I can ping the interface of the ovs router on the external network. I can not though ping inside the private network. A trace route stops at the IP of the OVS router. With wireshark, I do not see anything coming from the external pc’s IP. If I trace route it, I see packets making all the way to the OVS router and then stop. Since I can ping one way, and not the other; I believe there is something in the router/OVS that is stopping the packets to route into the private subnet. What do I need to look at? (I have disabled all firewalls on all OSes involved.)<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Here is a sudo design of the setup.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Does respond to ping<o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Courier New""> VM OVS Router priv int OVS Router ext int External PC <o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Courier New";color:#00B050">10.0.0.14 -> 10.0.0.1 -> 172.16.1.1 -> 172.16.1.10<o:p></o:p></span></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Does <span style="color:red">not</span> respond to ping<o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Courier New"">External PC OVS Router ext int OVS Router priv int VM<o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Courier New";color:red">172.16.1.10 -> 172.16.1.1 -> 10.0.0.1 -> 10.0.0.14<o:p></o:p></span></p></div></div></body></html>