MED欺骗与域间出口选择

MED cheat and inter-domain egress selection

BGP(边界网关协议)是目前用于广域网中最主要的域间分布式动态路由协议,具有丰富的路由控制机制。BGP MED(multi-exit-disc)属性的正确使用可以避免热土豆路由和MED振荡。提出了一种称之为MED欺骗的路由策略技术,用于实现域间的出口选择。详细阐述了MED欺骗的原理与具体策略,并对其进行了优化,最后利用仿真软件加以验证。

At present, border gateway protocol is a mostly dynamic, distributed and inter-domain routing protocol used in WAN, it has plenty of routing control mechanisms. The inappropriate using of the MED （multi-exit-disc） attribute commonly induces to hot-potato routing and the persistent MED oscillation. This paper presented a routing policy technology called MED cheat to realize the inter-domain egress selection. It explicitly expatiated on the principles and concrete policy of MED cheat and optimized the way of MED cheat. In conclusion, validated the strategy by using the simulation software.