What is the maximum acceptable retransmission rate in local area networks?

The maximum acceptable retransmission rate in local area networks is often considered to be 0.5%. This figure is based on the need for efficient data transmission without excessive overhead or degradation in network performance.

In a LAN environment, a retransmission occurs when packets are lost or corrupted during transmission, leading to delays and reduced throughput. A retransmission rate of 0.5% indicates a well-functioning network where most packets successfully arrive at their destination on the first attempt. Rates above this threshold can suggest underlying issues such as network congestion, inadequate hardware, or signal interference.

By maintaining a retransmission rate at or below 0.5%, network administrators can ensure higher reliability and performance, helping to prevent major disruptions in data flow and user experience.