Analyzing the Impact of Router's Buffer Size on Packet Loss for TCP

Most of things are going computerized so, this means a lot of technological improvements and innovations will keep on coming as far as the Internet technology is concerned. Quality of service is more important in today's networks so, we will try to make network more reliable. Performance of network is often evaluated by two networking metrics: throughput and delay. We often need more throughputs and less delay to have better Quality of service. If we try to send more data to the network, we may increase throughput but we increase the delay because of traffic congestion in the network. The primary challenge in providing Quality of service is packet loss. Packet loss is condition in which data packets are transmitted correctly at one end of a connection, but never arrive at the destination end. This might be because of network conditions are poor (link failure) or the packet was deliberately dropped at a router because of congestion in path. Congestion is the state of network when data on link is more than the capacity of link is referred as congestion. Packet losses are more if there is congestion in path. Link failure can be consider as non-congestion related loss. Link failure is condition where link goes down and not able to transfer packets to another end. At that time, all the packets at source end remain in buffer and buffer holds the packet till their timeout occur. Our objective is to send packets successfully at destination without any loss so that throughput can be increased which will improve the network performance and result in better quality of service.