The effect of TCP’s packet inter-arrival rate on the overprovisioning factor required for backbone l
The design of core/backbone network links is based on queuing theory; namely, given the ratio of the arrival rate of packets to the link transmission rate (i.e., link utilization) it is possible to determine the delay of packets at the queue; the latter of which should be kept at a minimum to avoid congestion [Link to Cisco Backbone Capacity Planning Paper]. In the classical queuing theory, packet delays increase exponentially at a given utilization (defined as the “knee” of
A unified analytical approach for calculating access/aggregation bandwidth requirements during netwo
When deploying and operating broadband networks, it is essential to implement an analytical approach that determines if congestion is occurring at a potential bottleneck link or at a link with a high level of subscriber aggregation. Indeed, it is entirely possible for performance problems to occur when an internet connection is slowed down by a fast link rather than by a slow link owing to the presence of competing traffic on shared links. When information is downloaded on th
Overcoming the challenges posed by using indirect inference when solving performance problems on the
Whereas congestion is readily apparent to Internet subscribers when their download speeds deteriorate resulting in performance degradation such as a lower video quality and/or buffering, the same cannot be said of Network Operators who have to find a way to detect congestion based purely on observations of the flow of data traffic across the network. In terms of the links between network nodes (e.g., routers), the network can be said to be congested if the traffic demanded by
