[Openstack] error in creating external network

I am getting the following error when I give this command neutron net-create ext-net --shared --router:external=True error is: Unable to establish connection to http://10.107.0.139:9696/v2.0/networks.json 10.107.0.139 is IP of Horizon. Janki Chhatbar M.Tech (Embedded Systems) Nirma University

Re: [Openstack] error in creating external network

Unable to establish connection to http://10.107.0.139:9696/v2.0/networks.json 10.107.0.139 is IP of Horizon It's probably also the IP of other services. 9696 is neutron's port number. Check that you have neutron running. If it is running, then your keystone endpoint for neutron is probably