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Introduction to Computer Networks and Cybersecurity by J. David Irwin, Chwan-Hwa Wu

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Chapter 15

Packet Loss Recovery

The learning goals for this chapter are as follows:

  • Understand the scope of the detection and correction mechanisms involved in packet loss, delay, and errors
  • Learn the procedure for Retransmission Timeout (RTO) and the role played by the Round Trip Time (RTT)
  • Learn the role of Acknowledgment (ACK) in the transmission of data between sender and receiver
  • Understand the details involved in the use of the sliding window and the effect that ACK has on its operation
  • Learn the causes and correction mechanisms for the silly window syndrome
  • Understand the use of the Selective Acknowledgment (SACK) mechanism

15.1 Packet Acknowledgment (ACK) and Retransmission

An inherent problem in the transmission of packets is the ...

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