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fast retransmit and recovery (TCP/IP) (FRR)

Fast Retransmit and Recovery (FRR) is an algorithm used in TCP/ IP protocols for congestion control that can recover lost or damaged data packets in the event of packet loss.

If a receiving unit detects that a data packet is missing or damaged during normal TCP transmission, it sends a request to the sending station. At the same time, a timer is used to generate a time-out during which no further data packets can be sent. This time-out period is shortened in Fast Retransmit and Recovery (FRR) because the lost data packet is retransmitted without waiting for the time-out to end.

The FRR algorithm for fast retransmission of data packets has been described in RFC 2001 and RFC 2581.

Informations:
Englisch: fast retransmit and recovery (TCP/IP) - FRR
Updated at: 25.06.2018
#Words: 117
Links: algorithm, tape carrier package (chip design) (TCP), intelligent peripheral (IP), congestion control, data
Translations: DE
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