改进BGP实现大型复杂IP网络的负载均衡  

Load Sharing Implementation in Large Complicated IP Networks by Improving BGP

作　　者：徐建锋[1] 朱华虹[1] 

机构地区：[1]中国电信广州研发中心,广州510630

出　　处：《电信科学》2004年第10期15-19,共5页Telecommunications Science

摘　　要：通过多条等价链路实现流量的负载分担,是大型IP网络设计的基本方法。IGP能够很好地支持等价路径的负载分担,但是BGP引入路由反射器(RR)后,不能配合IGP实现等价路径的负载分担和最短路径的选择,造成流量分布的不均衡。本文提出了两种BGP扩展方法,用于解决大型IP网络中的负载均衡问题:多反射路径(multi-reflectionpath,MRP)和下一跳撤销反射(next-hopdesignatedwithdrawreflection,NHDWR)。通过这两种方法,解决了自治系统内部穿透流量的负载均衡和最短路径的选择。Load sharing among multiple equal cost paths is a basic method in large IP networks design. There are some load-sharing solutions in IGP protocols. However, there is no way to resolve load sharing in BGP with route reflections. This paper proposes two extensible mechanisms that will resolve load sharing in BGP with route reflections: multi-reflection path(MRP)and next-hop designated withdraw reflection(NHDWR).

关 键 词：负载均衡 IGP IP网络 最短路径 BGP 路由反射 自治系统 链路 地支 大型 

分 类 号：TN915[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]