Layer4 Transport Layer - Transport Layer Protocols TCP and...

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Unformatted text preview: Transport Layer Protocols TCP and UDP-- by Dijiang Huang 2 Lecture Outline Layered Protocol review UDP TCP ICMP 3 Standard Layered Architecture Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer OSI Model Internet Application Layer TCP / UDP Layer Internet Protocol Physical Layer 4 Internet Protocol Review Connectionless Protocol Low overhead, but unreliable Supports routing in heterogeneous network Provides source / destination IP address Supports packet fragmentation / reassembly Limits packet lifetime in network Supports optional services source routing, route recording 5 Data Encapsulation Application Layer TCP / UDP /ICMP Layer IP Layer Physical Layer User Data TCP PH IP 6 User Datagram Protocol (UDP) Connectionless Data Transfer Each packet sent independently No fragmentation No connection setup Port numbers provide access to application Unreliable No acknowledgement in UDP 7 UDP Header 0 7 8 15 16 23 24 31 +--------+--------+--------+--------+ | Source | Destination | | Port | Port | +--------+--------+--------+--------+ | | | | Length | Checksum | +--------+--------+--------+--------+ | | data octets ......
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This note was uploaded on 10/28/2009 for the course CSE 598 taught by Professor Huang during the Fall '09 term at University of Arizona- Tucson.

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Layer4 Transport Layer - Transport Layer Protocols TCP and...

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