Hi, I am quite new to openstack and I have installed openstack havana in a 3 machine configuration - controller, compute and network nodes. When an instance is rebooted it looses connectivity on both floating ip and private ip. When a new instance is started all the old instances gain connectivity. I have found that restarting neutron-plugin-openvswitch-agent in the compute node fixes the problem and all the instances gain connectivity. I have followed this to install openstack on Ubuntu 12.04 machines: http://docs.openstack.org/havana/install-guide/install/apt/content/ I have followed this link to create the network : http://docs.openstack.org/havana/install-guide/install/apt/content/demo_logical_network_config.html The neutron configuration files are attached. Please help -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: api-paste.ini Type: application/octet-stream Size: 862 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: dhcp_agent.ini Type: application/octet-stream Size: 2922 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment-0001.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: l3_agent.ini Type: application/octet-stream Size: 2416 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment-0002.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: metadata_agent.ini Type: application/octet-stream Size: 1228 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment-0003.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: neutron.conf Type: application/octet-stream Size: 13758 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141031/3a3c63c3/attachment-0004.obj>