{
    "event": "topo2CurrentRegion",
    "payload": {
        "id": "(root)",
        "subregions": [],
        "links": [
            {
                "id": "device:leaf1/1~device:spine1/1",
                "epA": "device:leaf1/1",
                "epB": "device:spine1/1",
                "type": "UiDeviceLink",
                "portA": "1",
                "portB": "1",
                "rollup": [
                    {
                        "id": "device:leaf1/1~device:spine1/1",
                        "epA": "device:leaf1/1",
                        "epB": "device:spine1/1",
                        "type": "UiDeviceLink",
                        "portA": "1",
                        "portB": "1"
                    }
                ]
            },
            {
                "id": "device:leaf2/2~device:spine2/2",
                "epA": "device:leaf2/2",
                "epB": "device:spine2/2",
                "type": "UiDeviceLink",
                "portA": "2",
                "portB": "2",
                "rollup": [
                    {
                        "id": "device:leaf2/2~device:spine2/2",
                        "epA": "device:leaf2/2",
                        "epB": "device:spine2/2",
                        "type": "UiDeviceLink",
                        "portA": "2",
                        "portB": "2"
                    }
                ]
            },
            {
                "id": "00:00:00:00:00:1A/None~device:leaf1/3",
                "epA": "00:00:00:00:00:1A/None",
                "epB": "device:leaf1",
                "type": "UiEdgeLink",
                "portB": "3",
                "rollup": [
                    {
                        "id": "00:00:00:00:00:1A/None~device:leaf1/3",
                        "epA": "00:00:00:00:00:1A/None",
                        "epB": "device:leaf1",
                        "type": "UiEdgeLink",
                        "portB": "3"
                    }
                ]
            },
            {
                "id": "00:00:00:00:00:30/None~device:leaf2/3",
                "epA": "00:00:00:00:00:30/None",
                "epB": "device:leaf2",
                "type": "UiEdgeLink",
                "portB": "3",
                "rollup": [
                    {
                        "id": "00:00:00:00:00:30/None~device:leaf2/3",
                        "epA": "00:00:00:00:00:30/None",
                        "epB": "device:leaf2",
                        "type": "UiEdgeLink",
                        "portB": "3"
                    }
                ]
            },
            {
                "id": "device:leaf1/2~device:spine2/1",
                "epA": "device:leaf1/2",
                "epB": "device:spine2/1",
                "type": "UiDeviceLink",
                "portA": "2",
                "portB": "1",
                "rollup": [
                    {
                        "id": "device:leaf1/2~device:spine2/1",
                        "epA": "device:leaf1/2",
                        "epB": "device:spine2/1",
                        "type": "UiDeviceLink",
                        "portA": "2",
                        "portB": "1"
                    }
                ]
            },
            {
                "id": "device:leaf2/1~device:spine1/2",
                "epA": "device:leaf2/1",
                "epB": "device:spine1/2",
                "type": "UiDeviceLink",
                "portA": "1",
                "portB": "2",
                "rollup": [
                    {
                        "id": "device:leaf2/1~device:spine1/2",
                        "epA": "device:leaf2/1",
                        "epB": "device:spine1/2",
                        "type": "UiDeviceLink",
                        "portA": "1",
                        "portB": "2"
                    }
                ]
            },
            {
                "id": "00:00:00:00:00:20/None~device:leaf1/6",
                "epA": "00:00:00:00:00:20/None",
                "epB": "device:leaf1",
                "type": "UiEdgeLink",
                "portB": "6",
                "rollup": [
                    {
                        "id": "00:00:00:00:00:20/None~device:leaf1/6",
                        "epA": "00:00:00:00:00:20/None",
                        "epB": "device:leaf1",
                        "type": "UiEdgeLink",
                        "portB": "6"
                    }
                ]
            },
            {
                "id": "00:00:00:00:00:1C/None~device:leaf1/5",
                "epA": "00:00:00:00:00:1C/None",
                "epB": "device:leaf1",
                "type": "UiEdgeLink",
                "portB": "5",
                "rollup": [
                    {
                        "id": "00:00:00:00:00:1C/None~device:leaf1/5",
                        "epA": "00:00:00:00:00:1C/None",
                        "epB": "device:leaf1",
                        "type": "UiEdgeLink",
                        "portB": "5"
                    }
                ]
            },
            {
                "id": "00:00:00:00:00:1B/None~device:leaf1/4",
                "epA": "00:00:00:00:00:1B/None",
                "epB": "device:leaf1",
                "type": "UiEdgeLink",
                "portB": "4",
                "rollup": [
                    {
                        "id": "00:00:00:00:00:1B/None~device:leaf1/4",
                        "epA": "00:00:00:00:00:1B/None",
                        "epB": "device:leaf1",
                        "type": "UiEdgeLink",
                        "portB": "4"
                    }
                ]
            }
        ],
        "devices": [
            [],
            [],
            [
                {
                    "id": "device:spine1",
                    "nodeType": "device",
                    "type": "switch",
                    "online": true,
                    "master": "172.24.0.3",
                    "layer": "def",
                    "props": {
                        "managementAddress": "grpc://mininet:50003?device_id=1",
                        "protocol": "P4Runtime, gNMI, gNOI",
                        "gridX": "400.0",
                        "gridY": "400.0",
                        "driver": "stratum-bmv2",
                        "name": "device:spine1",
                        "p4DeviceId": "1",
                        "locType": "grid"
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 400.0,
                        "longOrX": 400.0
                    }
                },
                {
                    "id": "device:spine2",
                    "nodeType": "device",
                    "type": "switch",
                    "online": true,
                    "master": "172.24.0.3",
                    "layer": "def",
                    "props": {
                        "managementAddress": "grpc://mininet:50004?device_id=1",
                        "protocol": "P4Runtime, gNMI, gNOI",
                        "gridX": "600.0",
                        "gridY": "400.0",
                        "driver": "stratum-bmv2",
                        "name": "device:spine2",
                        "p4DeviceId": "1",
                        "locType": "grid"
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 400.0,
                        "longOrX": 600.0
                    }
                },
                {
                    "id": "device:leaf2",
                    "nodeType": "device",
                    "type": "switch",
                    "online": true,
                    "master": "172.24.0.3",
                    "layer": "def",
                    "props": {
                        "managementAddress": "grpc://mininet:50002?device_id=1",
                        "protocol": "P4Runtime, gNMI, gNOI",
                        "gridX": "800.0",
                        "gridY": "600.0",
                        "driver": "stratum-bmv2",
                        "name": "device:leaf2",
                        "p4DeviceId": "1",
                        "locType": "grid"
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 600.0,
                        "longOrX": 800.0
                    }
                },
                {
                    "id": "device:leaf1",
                    "nodeType": "device",
                    "type": "switch",
                    "online": true,
                    "master": "172.24.0.3",
                    "layer": "def",
                    "props": {
                        "managementAddress": "grpc://mininet:50001?device_id=1",
                        "protocol": "P4Runtime, gNMI, gNOI",
                        "gridX": "200.0",
                        "gridY": "600.0",
                        "driver": "stratum-bmv2",
                        "name": "device:leaf1",
                        "p4DeviceId": "1",
                        "locType": "grid"
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 600.0,
                        "longOrX": 200.0
                    }
                }
            ]
        ],
        "hosts": [
            [],
            [],
            [
                {
                    "id": "00:00:00:00:00:30/None",
                    "nodeType": "host",
                    "layer": "def",
                    "ips": [
                        "2001:2:3::1"
                    ],
                    "props": {
                        "gridX": "750.0",
                        "gridY": "700.0",
                        "latitude": null,
                        "name": "h3",
                        "locType": "grid",
                        "longitude": null
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 700.0,
                        "longOrX": 750.0
                    },
                    "configured": false
                },
                {
                    "id": "00:00:00:00:00:1A/None",
                    "nodeType": "host",
                    "layer": "def",
                    "ips": [
                        "2001:1:1::a"
                    ],
                    "props": {
                        "gridX": "100.0",
                        "gridY": "700.0",
                        "latitude": null,
                        "name": "h1a",
                        "locType": "grid",
                        "longitude": null
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 700.0,
                        "longOrX": 100.0
                    },
                    "configured": false
                },
                {
                    "id": "00:00:00:00:00:1B/None",
                    "nodeType": "host",
                    "layer": "def",
                    "ips": [
                        "2001:1:1::b"
                    ],
                    "props": {
                        "gridX": "100.0",
                        "gridY": "800.0",
                        "latitude": null,
                        "name": "h1b",
                        "locType": "grid",
                        "longitude": null
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 800.0,
                        "longOrX": 100.0
                    },
                    "configured": false
                },
                {
                    "id": "00:00:00:00:00:1C/None",
                    "nodeType": "host",
                    "layer": "def",
                    "ips": [
                        "2001:1:1::c"
                    ],
                    "props": {
                        "gridX": "250.0",
                        "gridY": "800.0",
                        "latitude": null,
                        "name": "h1c",
                        "locType": "grid",
                        "longitude": null
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 800.0,
                        "longOrX": 250.0
                    },
                    "configured": false
                },
                {
                    "id": "00:00:00:00:00:20/None",
                    "nodeType": "host",
                    "layer": "def",
                    "ips": [
                        "2001:1:2::1"
                    ],
                    "props": {
                        "gridX": "400.0",
                        "gridY": "700.0",
                        "latitude": null,
                        "name": "h2",
                        "locType": "grid",
                        "longitude": null
                    },
                    "location": {
                        "locType": "grid",
                        "latOrY": 700.0,
                        "longOrX": 400.0
                    },
                    "configured": false
                }
            ]
        ],
        "layerOrder": [
            "opt",
            "pkt",
            "def"
        ]
    }
}