{
    "VOLTDeviceInfo" : [
    {
            "device_type": "openolt",
            "host": "10.192.4.218",
            "port": 9191,
            "switch_datapath_id": "of:0000cc37abd93769",
            "switch_port": "7",
            "outer_tpid": "0x8100",
            "name": "olt-1",
            "uplink": "128",
            "volt_service_id": 2
    }
  ]
}