QoS and Over-subscription for IP/MPLS Networks
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QoS (quality of service) as its name, it utilizes basic networking technologies such as classifying, queuing, policing, packet drop, and shaping to maintain the certain network quality based on SLA (Service-Level Agreement), and also supply better service and performance for networking communication. As the beginning of establishment of internet, the QoS was not to be recognized its necessity for the whole internet, it was only best effort service mode. When the traffic is getting dramatically increased, the best effort mechanism cannot reach the requirement of fast internet level any more and the transmitting data gets dropped. Therefore, the main point of QoS is to resolve the traffic delay and congestion issue. (As cited in abstract.) *Publication date not found.
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http://purl.org/coar/resource_type/c_93fc
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en