def create_port_odl(self, ports_json):
        print 'Initialize ODL client'
        odl_url = 'http://127.0.0.1:8181/controller/nb/v2/neutron'
        port_url = 'ports'
        if self.client is None:
            self.client = odl_client.OpenDaylightRestClient.create_client(url=odl_url)