In this paper an OSPF convergence time prediction model is
introduced. It is based on examining the behaviour OSPF
and on the analysis of the generated data by OSPF flooding. The model was validated and refined by tests and experiments
on a test network built for this work. The resultant model can be used to predict the effect and convergence of a change
in an OSPF network. This feature is very usable for pre-emptive network
management and network planning