Study of ISO 10589 Protocol in a Dynamic QoS-Based Routing Environment

摘要

A computer simulation model of the CSNI network topology was developed to assessthe effectiveness of QoS-driven routing in heterogeneous radio subnetworks. The simulated topology contains 11 routers, 33 subnetwork access controllers and as many end systems forming a single IS-IS routing domain of 13 subnets. The study investigates how to set the ISO 10589 protocol timers and QoS measurement period to best control the rate of link state advertisements within the network and to minimize the routing data overhead over the links. Simulation results show that the ISO 10589: 1992 (E) protocol imposes several limitations when the routing information bases are dynamically modified to adapt to QoS changes of the subnets.