chapter_18 - IP Protocol CSE 6590 Winter 2012 TCP/IP...

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IP Protocol CSE 6590 Winter 2012
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TCP/IP Concepts
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Connectionless Operation Internetworking involves connectionless operation at the level of the Internet Protocol (IP)
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Connectionless Internetworking Connectionless internet facility is flexible IP provides a connectionless service between end systems. Advantages: is flexible can be made robust does not impose unnecessary overhead
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IP Operation
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IP Design Issues routing datagram lifetime fragmentation and reassembly error control flow control
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Routing
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Datagram Lifetime datagrams could loop indefinitely consumes resources transport protocol may need upper bound on lifetime of a datagram can mark datagram with lifetime when lifetime expires, datagram discarded
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Fragmentation and Re-assembly protocol exchanges data between two entities lower-level protocols may need to break data up into smaller blocks, called fragmentation reasons for fragmentation: network only accepts blocks of a certain size fairer access to shared facilities smaller buffers disadvantages: greater overhead (headers) more interrupts & processing time
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Fragmentation and Re-assembly
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This note was uploaded on 02/14/2012 for the course CSE 6590 taught by Professor Kotakoski during the Winter '12 term at York University.

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chapter_18 - IP Protocol CSE 6590 Winter 2012 TCP/IP...

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