战术IP网络中OSPF与EIGRP的性能分析

战术IP网络要求路由协议具有较快的收敛性、较小的端到端时延和遭遇突发事件时较强的数据响应能力。利用OPNET仿真工具，比较了OSPF和EIGRP这两种协议上述3个方面性能的差别。仿真结果表明：EIGRP的收敛性比OSPF快近2倍并且峰值流量减少了50％，平均端到端时延比OSPF减少了20％，异常情况下对数据的响应时间明显少于OSPF。因此，EIGRP协议更适用于战术IP网络。同时，针对OSPF协议提出了一些修改建议。

Performance comparisons between OSPF and EIGRP in tactical IP networks

Tactical IP networks have special requirem e nts for a routing protocol. The most important ones are fast convergence, short end-to-end delay and the ability to recover from emergencies quickly. With OPN ET, this paper compared the performances of EIGRP and OSPF in the above aspects with the result that the convergence of EIGRP is about 2 times faster than OSPF and pea k traffic in the former is about 50% of the latter. The end-to-end delay with EIGRP is about 20% less than with OSPF. The response time is less either in EIGR P. In summery, EIGRP is more suitable for tactical IP networks than OSPF. Some suggestions were put forward to improve the performance of OSPF.