Hi, I have OpenStack cluster with this following network environment. Global Configuration : Data & Management Network : 10.60.60.0/24 External Network: 10.61.61.0/24 - All my endpoint is created in the Data & Management Network - Instance get floating IP from External Network IP Address Allocation : Controller: 10.60.60.10 | 10.61.61.10 Compute0: 10.60.60.20 | 10.61.61.20 Compute1: 10.60.60.30 | 10.61.61.30 Floating IP range : 10.61.61.100 - 10.61.61.200 My problem is the Instance cannot connect (ping, ssh, all connection) into the data/management network. I am running a magnum cluster but the instance needs to communicate with the endpoint. How to allow an Instance to connect to the data/management network? Best Regards, Zufar Dhiyaulhaq