Multiplexing/demultiplexing Recall: segment-unit of data Demultiplexing: deliverin exchanged between received segments to transport layer entities correct app layer processes o aka TPDU: transport protocol data unit receiver P3 application-layer P4 M(M data applicatio segment trarsport P2 eader M M net work applcation application segment→匠 M transport transport Hnl Metwork network 3: Transport Le 3a-43: Transport Layer 3a-4 application transport network M P2 application transport network Multiplexing/demultiplexing Recall: segment - unit of data exchanged between transport layer entities  aka TPDU: transport protocol data unit receiver Ht Hn Demultiplexing: delivering received segments to correct app layer processes segment segment M application transport network P1 M M M P3 P4 segment header application-layer data