On the Extensibility Properties and Performance Measures of Circuit Switched Telecommunication Networks, Using Agent-Based Distributed Routing Algorithm

Abstract

An agent-based routing control system and its behavior while network topology changes to an extended version, is being studied in this paper. In real time networks for various reasons some of the nodes collapse or taken off-line for maintenance causing a significant reduction in performance. Inspired from this, we have examined the behavior of an agent-based routing which is applied to a realistic Synchronous Digital Hierarchy (SDH) complex topology network that tends to increase-or decrease- the number of nodes randomly/under conditions or even activate certain nodes that were inactive. Algorithmically complex problems like routing in telecommunication network, needs a dynamic adaptive approach. Agent-based routing method continually modifies the routing tables in response to congestion and overload in a network, to two different network topologies, measuring performance for the assumptions made. This decentralized routing scheme is shown not be substantially affected from any topological changes, when subjected to a certain frequency limit in variations. Through various newly introduced metrics and simulation of the proposed scenarios, we have shown that agent-based routing offer us a decentralized routing control in the network and an efficient way to stabilize responsiveness and increase overall performance.