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The Pros And Cons Of Congestion

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Congestion control
Today’s internet suffers from several problems that are driving computer experts to develop the architect of innovative computer networks in the upcoming future. Security issues are the major concern in today’s internet. Denial of service attack and spam are the most common threats which have leaned the balance of power in favour of attackers. Another most important issue to be considered is traffic control mechanism. NDN as a networking architecture need to define concise methods to control traffic when multiple users contend for access to the same resources like bandwidth, buffers and queues. It is proved that networks with infinite-buffer routers are as vulnerable to congestion as networks with normal buffer space switches. Because in normal buffer space there will be too much traffic load which leads to buffer overflow and packet drops, on the other hand large buffer space causes long queue and more delay and consequently when packets processing is performed majority of them have already been time out. Congestion is a dynamic problem and the static solutions cannot tackle the problem effectively. Thus a new control mechanism need to be designed to deal with the congestion issue in time of occurrence. …show more content…
So a simple link-layer protocol is proposed. In this detection of congestion is achieved without monitoring the output queues. The mechanism adds a sequence number to every NDN packet forwarded on one link. The router on the other end of link maintains the block of sequence numbers which it received recently. If there are gaps in sequence numbers then it indicates potential packet losses, which can be regarded as signals of congestion in paths. Then we consider the end point of block where the packet reordering cannot treated as packet

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