This paper describes the subject of dynamic routing protocols performance of EIGRP, OSPF and RIP in real time applications. Furthermore the effect of dividing OSPF networks into several areas in real time applications will be discussed. Problems facing large networks are the increased routed traffic and the reduction in stability of the network, moreover the security of the network that can be easily breached the size increase. In this paper the performance parameters that determine the performance of RIP, OSPF, and EIGRP was evaluated along with studying the effect of using areas in OSPF as a routing protocol. These parameters are: convergence duration, traffic sent, End to End delay and delay variation, utilization, and packet loss. As a specific interest, we are going to study the effect of OSPF areas on the quality of service of voice over IP as an application layer level. [1]. OPNET simulation tool is used to compare different routing protocols besides comparing different area division topologies and measuring different performance parameters. this paper consist of two parts, the first analyze the performance of EIGRP,RIP,OSPF and the second part focus on OSPF areas since OSPF is the most common routing protocol.

RIP EIGRP OSPF OSPF areas OPNET Delay variation End to End delay