7.12 Data flows Session e Data flow identified by destination Resources allocated by router for duration of session ◆ Defined by Destination IP address ◆ Unicast or multicast IP protocol identifier ◆ TCP, UDP etc Destination port May not be used in multicast7 7.1.2 Data Flows - Session Data flow identified by destination Resources allocated by router for duration of session Defined by ◼ Destination IP address  Unicast or multicast ◼ IP protocol identifier  TCP, UDP etc. ◼ Destination port  May not be used in multicast