Restrictions Congestion Avoidance Overview C ongestion avoidance techniques monitor network traffic loads in an effort to anticipate and avoid congestion at common network bottlenecks.
Congestion avoidance is achieved through packet dropping.
Cisco IOS QoS includes an implementation of RED that, when configured, controls when the router drops packets. This chapter gives a brief description of the kinds of congestion avoidance features provided by the Cisco IOS QoS features. This is the default congestion avoidance behavior when WRED is not configured. Weighted Random Early Detection . Queues fill during periods of congestion.