Layer 3: (Inter)Network Layer(P) Bridges multiple subnets to provide end-to-end internet connectivity between Application nodes Provides global addressing 432 Transport Works across different ink Link technologies Physical26 Layer 3: (Inter)Network Layer (IP) 7 4 3 2 1 Bridges multiple “ s u bn ets” to provide end-to-end internet connectivity between nodes • Provides global addressing Works across different link technologies Application Transport (Inter)Network Link Physical