Functionality Split Network provides best-effort delivery End-systems implement many functions Reliability n-order delIvery · Demultiplexing Message boundaries Connection abstraction ° Congestion control Lecture 16: Transport Protocols5 Lecture 16: Transport Protocols Functionality Split • Network provides best-effort delivery • End-systems implement many functions • Reliability • In-order delivery • Demultiplexing • Message boundaries • Connection abstraction • Congestion control • …