Packet flow analysis in X.25 public data networks : a simulation tool

This report describes a Simula program designed to model the behaviour of X.25 Public Data Networks and produce statistics on various performance indices of the network. These include such indices as: - packet transfer times for each pair of nodes - time spent in each node - line utilisations - wait times for each line - buffer utilisations The user describes the network by suppling the model with information on each node and the lines that connect the nodes. This allows a large variety of X.25 network configurations to be studied