cassini-demo/openconfig-device-cassini-test-link.json

{
    "links": {
        "netconf:10.128.200.2:830/201-netconf:10.128.200.3:830/202": {
            "basic" : {
                "type": "OPTICAL",
                "metric": 1
            }
        },
        "netconf:10.128.200.3:830/202-netconf:10.128.200.2:830/201": {
            "basic" : {
                "type": "OPTICAL",
                "metric": 1
            }
        }
    }
}