Activity (Process)

TCP Packet Recovery and Congestion Control

TCP maintains reliability during data transfer through sequence tracking, packet retransmission, and congestion control:

  • Because TCP assigns sequential numbers to each outgoing packet, the destination device can immediately detect gaps in the received sequence.
  • When a packet is lost, no acknowledgment is returned to the sender, signaling packet loss and prompting the sender to retransmit only the missing packet.
  • When packet loss occurs as a result of network congestion, TCP automatically reduces its transmission rate to alleviate traffic load, gradually accelerating back up as network conditions improve.

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Updated 2026-09-09

Tags

Prep Sessions

The Architecture of Connected Systems: Tracing End-to-End Data Flow @ University of Michigan - Ann Arbor

Ch.3 Core Internet Protocols - The Architecture of Connected Systems: Tracing End-to-End Data Flow @ University of Michigan - Ann Arbor

Transmission Control Protocol (TCP) and the Three-Way Handshake - The Architecture of Connected Systems: Tracing End-to-End Data Flow @ University of Michigan - Ann Arbor