Hi Sadique Puthen, Initially the VM launched in separate compute node fails to get the ip from dhcp. Later I have installed q-dhcp agent in separate compute node. Now the VM (launched on separate node) is getting ip address from dhcp. 1) Yes both the instances are getting ip addresses in my case 10.0.0.2 and 10.0.0.4 2) Security groups rules to allow ALL ICMP is added 3) I observered br-int, br-ex and br-tun bridges on both controller and compute nodes I am using ovs plugin. And in controller node i have seen two namespaces both qdhcp and qrouter. But in compute node only qdhcp is there. Does it require qrouter also inorder to establish communication b/w VMs ??. If so, please tell me which service/agent i am missing to do that ?