NUS'SOC'CS2105

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Application
Transport
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Network
Link
Physical
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TCP

• Transmission Control Protocol

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Application
Transport (process-to-process)
Network (unreliable, host-to-host)
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src port
dest port
checksum
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sequence number
acknowledgement number
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Data to Send
Data Received
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• call from above

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• recv ACK y

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• timeout

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Timeout
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Receiver Buffer
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Receiver Buffer
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Receiver Buffer
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Receiver Buffer
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receiver window
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Receiver Buffer
Sender
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CongestionControl
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Dup ACK received
New ACK received
Timeout
Triple Dup ACKs