AN ALGORITHM FOR ASSESSING THE AVAILABILITY CRITERIA IN TELECOMMUNICATION NETWORKS
Keywords:availability, TCP/IP networks, data links, channels, response time.
AbstractThis article describes the method for estimating the availability of TCP/IP virtual data links and the TCP/IP network as a whole. As criterion of availability, authors consider boundary values, i.e. the minimum availability of network when the majority of the tasks are carried out via channels with the minimum availability, and the maximum availability of network when the majority of the tasks are carried out via channels with the maximum availability. After the minimum and maximum availability of channels have been estimated, it is possible to use the rated distance for assessment of availability value for the network as a whole Authors offer the analytical model of evaluating availability of telecommunication system components based on the Kolmogorov distance. Authors also brought up and tested an algorithm that allows computing the scalar value of availability of network with complex topology. Experiments have shown that the mean error of assessment (an arithmetic average from relative errors of all channels of this network) equals approximately 14.5% and only 25% of total number of relative errors by channel considerably exceed a mean error.
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