What is Congestion in Computer Network?
Congestion is a state occurring in the network layer when the load(no. of packets send to the network ) on the network is greater than the capacity(no. of the packet a network can handle ) of the network. It occurs due to queues in Routes and Switches.
Effects of Congestion
- As delay increases, performance decreases.
- If delay increases, retransmission occurs, making the situation worse.
Congestion Controls are the techniques through which we try to avoid traffic congestion that leads to large queue length which results in buffer overflow and losses of packets to ensure that the user gets the negotiated quality of services.