Random Early Detection (RED)

Random Early Detection (RED) is a network congestion management technique used in routers to prevent traffic overload. It works by monitoring the average queue length of packets waiting to be transmitted. When the queue starts to fill up, RED randomly drops or delays some packets before it becomes full, signaling sources to slow down their data transmission. This proactive approach avoids sudden traffic jams, maintains smoother data flow, and reduces overall delays, ensuring fairer access for all users and improving network stability.