direction: down

Topology: {
  shape: class
  devices: "Dict[str, Device]"
  networks: "Dict[str, Network]"
  __init__(self)
  "add_device(self, device: Device)"
  "rm_device(self, device: Device)"
  "add_network(self, network: Network)"
  "rm_network(self, network: Network)"
  __repr__(self): str
}

Network: {
  shape:class
  name: str
  interfaces: "List[Interface]"
  vlan: "Optional[str]"
  network_ip: "Optional[str]"
  subnet_mask: "Optional[str]"
  "__init__(self, ...)"
  "add_interface(self, interface: Interface)"
  "rm_interface(self, interface: Interface)"
  __repr__(self): str
}

Host: {
  shape: class
}
Router: {
  shape: class
}
Switch: {
  shape: class
}

Device: {
  shape: class

  name: str
  role: str
  interfaces: "Dict[str, Interface]"
  "__init__(self, name: str)"
  "add_interface(self, interface: Interface)"
  "rm_interface(self, interface: Interface)"
  __repr__(self): str
}

VirtualInterface: {
  shape: class
}

Interface: {
  shape: class

  name: str
  ip_address: "Optional[str]"
  network: "Optional[str]"
  default_gateway: "Optional[str]"
  device: Device

  "__init__(self, ...)"
  __repr__(self): str
}

Host -> Device: {
  target-arrowhead.shape: triangle
  target-arrowhead.style.filled: false
}

Router -> Device: {
  target-arrowhead.shape: triangle
  target-arrowhead.style.filled: false
}

Switch -> Device: {
  target-arrowhead.shape: triangle
  target-arrowhead.style.filled: false
}

VirtualInterface -> Interface: {
  target-arrowhead.shape: triangle
  target-arrowhead.style.filled: false
}

Device -- Interface: has {
  source-arrowhead: 1..*
  target-arrowhead: 1
}

Device -- VirtualInterface: has {
  source-arrowhead: 1..*
  target-arrowhead: 1
}

Topology -- Network: has {
  source-arrowhead: 1..*
  target-arrowhead: 1
}

Topology -- Device: has {
  source-arrowhead: 1..*
  target-arrowhead: 1
}

Network -- Interface: has {
  source-arrowhead: 1..*
  target-arrowhead: 1
}