Answer to Question #162089 in Computer Networks for ifra

Question

Congestion in a network may occur if the load on the network is greater than the capacity of the network. The congestion control scheme tries to bring the network back to an operating state, while a congestion avoidance scheme tries to keep the network at an optimal state. The instant at which a congestion control scheme is called, depends on the amount of memory available in the routers whereas, the point at which a congestion avoidance scheme is invoked, is independent of the memory size. A congestion avoidance scheme may continuously oscillate slightly around its goal without significant degradation in performance. However, the congestion control scheme tries to minimize the chances of going above the limit.

As a network administrator, in your opinion, which of following technique will be more suitable for a WAN?

(1)   Congestion Avoidance

(2)   Congestion Control

Answer 1

congestion control is the best when it comes to the routerssince is the best technique that best address congestion and the prioty scheme that allows higher transmission of packets from busy devices like routers. since the protocols such as CSMA/CA in 802.11 and the CSMA/CD in the original Ethernet, and fair queueing in devices is efficient and the explicit allocation of network resources to specific flows through the use of admission control.