17 - Transport Control Protocol (TCP) Features of TCP,...

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Transport Control Protocol (TCP) Features of TCP, packet loss and retransmission, adaptive retransmission, flow control, three way handshake, congestion control
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Reliable transport IP is unreliable Application programmers typically require reliability (although not always) The Transmission Control Protocol (TCP) establishes a reliable end-to-end communication service on top of IP
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Seven major features of TCP 1. Connection oriented 2. Point to point 3. Complete reliability - delivered as sent 4. Full duplex communication 5. Stream interface 6. Reliable connection startup 7. Graceful connection shutdown
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End to end communication TCP has no knowledge of the underlying Internet structure
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Fundamental reliability problems Unreliable delivery by the communication system (IP) Unreliable end hosts (e.g., crashes and reboots TCP handles these through a variety of techniques
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Packet loss and retransmission Sender sets a timer Receiver sends a acknowledgement Timeout results in retransmission
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17 - Transport Control Protocol (TCP) Features of TCP,...

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