一种消除IBGP阵发性路由振荡的方法

研究了在使用BGP扩展机制之一的路由反射时,IBGP(Internal BGP)路由阵发性振荡问题·给出了一个基于图论的IBGP抽象模型,同时利用该模型详细地分析了IBGP路由阵发性振荡系统的动态行为特征·根据所获得的动态行为特征,提出了一种利用最小通告间隔定时器的非对称配置,消除IBGP路由的阵发性振荡,提高IBGP系统的稳定性和收敛性的方法·同时,利用IBGP抽象模型详细地分析了非对称配置方法的动态行为特征,从而说明了该方法的有效性·最后,利用仿真手段,分析和比较了对称配置和非对称配置对于IBGP收敛性和稳定性的影响·

Approach to Eliminating Transient Route Oscillations in IBGP

Studies the transient route oscillation in IBGP (Internal Border Gateway Protocol) when the route reflection is working as one of the mechanisms extended from BGP (Border Gateway Protocol). An abstract IBGP model is given on graph theory basis to analyze dynamically the behavior characteristics of a transient route oscillation system in IBGP in detail. Based on these characteristics, an asymmetric configuration with MRAI (Minimum Route Advertisement Interval, a BGP-specific timer) used is proposed to eliminate the transient route oscillations in IBGP and improve the stability and convergence of IBGP system. Then, the abstract IBGP model is used once more to analyze dynamically the behavior characteristics of the asymmetric configuration in detail so as to prove its effectiveness. Finally, the effects of symmetric and asymmetric configurations on the stability and convergence of IBGP are analyzed by means of simulation.