User's Manual

Congestion avoidance and traditional packet loss mechanism

Excessive congestion may inflict damage on network resources, so network congestion should be resolved

through some measures. Congestion avoidance is a sort of flow control method of positively dropping packets

and regulating network flows to solve network overload via network resource monitoring. The traditional way

of resolving network congestion is to drop all incoming packets when the queue length reaches its threshold.

But for TCP packets, heavy packet loss may cause TCP timeout and lead to slow TCP startup and congestion

avoidance, which is called as TCP global synchronization.