Congestion avoidance technology can prevent congestion on an interface.

Congestion Avoidance in Networking

Congestion avoidance mechanismsprevent packet loss and delayby managing queues before congestion occurs.

Common Congestion Avoidance Techniques:

Weighted Random Early Detection (WRED)– Randomly drops low-priority packets before congestion builds up.

Explicit Congestion Notification (ECN)– Marks packets instead of dropping them to signal congestion.

Queue Management– Techniques likepriority queuing (PQ) and weighted fair queuing (WFQ)help prevent congestion.

Reference from Huawei HCIE-Datacom Documentation:

Huawei QoS Configuration Guide – Congestion Avoidance Technologies

HCIE-Datacom Study Material – Traffic Management and Queue Optimization