Study On Efficient Reactive Monitoring Algorithms Based On SNMP

Networks are monitored in order to ensure that the system operates within desirable parameters. The increasing complexity of networks and services provided by them increases this need for monitoring. Monitoring consists of measuring properties of the network, and of inferring an aggregate predicate from these measurements. Conducting such monitoring introduces traffic overhead that may reduce the overall effective throughput.This thesis studies ways to minimize the monitoring communication overhead in IP networks. Based on the hierarchical network architecture, we develop and analyze several monitoring algorithms that achieve significant reduction in the management overhead while maintaining the functionality. The main idea is to combine global polling with local event driven reporting.The amount of traffic saving depends on the statistical characterization of the monitored data. The algorithm analyses show that the proposed monitoring scheme reduces both the number of polling and the cost of the network management; consequently improves the network performance.