nwdiag {
  inet [shape = cloud];
  inet -- router;

  network cluster {
    router;

    address = "210.x.x.x/24"

    node-01 [address = "210.x.x.1"];
    node-02 [address = "210.x.x.2"];
    node-03 [address = "210.x.x.2"];
  }
}