Abstract: Open shortest path first protocol,as a kind of protocol based on link state,has the advantages of routing without loop,fast convergence,and good scalability,is widely used in various parks network construction,and a basic network engineering practice skill for computer students to master.The research and analysis of OSPF protocol on physical experimental equipment is difficult to operate and understand for students,which is not conducive to experimental teaching,however.Firstly,the basic working process of OSPF protocol and its concept of regional partition are analyzed.Then,the network scenario is designed and simulated on eNSP,and two kinds of simulation experiments of OSPF protocol are given in detail.Finally,the experimental analysis shows that this way of experimental teaching under virtual platform can deepen students' understanding of OSPF protocol principles and grasp practical skills,and is an effective experimental teaching reference mode.

Key words: OSPF Protocol, single area, multiple areas, simulation experiment