Packet-Level Link Capacity Evaluation for IP Networks

摘要

In recent times, with many applications, the IP networks have become themost powerful tool for sharing information. Best-effort IP interconnected networksdeliver data according to the available resources, without any assurance ofthroughput, delay bounds, or reliability requirements. As a result, their performanceis highly variable and cannot be guaranteed. In IP networks, ensuring proper linkcapacity at the packet level is a challenging problem. In this article, a method toevaluate the link capacity of IP networks at the packet level based on a single serverdelay system with state-dependent arrival and departure processes is suggested. Thedependence of the traffic being carried on the queue length and on the defined waitingtime is shown. Presented graphic dependencies allow for defined quality of service,namely the probability of packet loss and admissible delays, to determine the carriedtraffic of the links.