# Revision history [back]

### Unnable to ping between instances

Hi everyone! I've done the integration of ODL Lithium with openstack Juno, and seems that everything is running well, I can create the newtorks, routers and launch instances, but when I am trying to ping two instances through their consoles a messages appears telling me that network is unnrachable, and if I check their network interfaces on eht0 doesn't show any IP adrres while in Openstack Horizon the instances are showing an IP, meanwhile in the ODL client CLI if I display the ovsdb log it show something like this:

2015-11-19 10:41:36,864 | WARN  | ntDispatcherImpl | OF13Provider                     | 286 - org.opendaylight.ovsdb.openstack.net-virt-providers - 1.1.2.Lithium-SR2 | Tunnel end-point configuration missing. Please configure it in OpenVSwitch Table. Check source null or destination null
2015-11-19 10:41:37,132 | WARN  | ntDispatcherImpl | OF13Provider                     | 286 - org.opendaylight.ovsdb.openstack.net-virt-providers - 1.1.2.Lithium-SR2 | Tunnel end-point configuration missing. Please configure it in OpenVSwitch Table. Check source null or destination null


I don't know how to fix it, so if anyone had the same problem and know how to fix it , I would be so glad for the help!

thanks to all