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weighted random early detection (WRED)

The Weighted Random Early Detection (WRED) method is used to increase the throughput of a router in the event of congestion.

WRED is an optimized RED procedure that assigns a priority to the data packets that are to be discarded by the router, for example a label edge router (LER), in the event of congestion.

Reduction of congestion situations by RED and WRED

Reduction of congestion situations by RED and WRED

To this end, in a congestion situation, WRED does not discard frames with a higher IP precedence marking, as well as packets belonging to a Resource Reservation Protocol (RSVP) connection. This ensures a good quality of service even in congestion situations.

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Englisch: weighted random early detection - WRED
Updated at: 13.07.2011
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Translations: DE