Carriers′carriers结构的BGP/MPLS VPN解决方案

A Proposal for Carriers′carriers BGP/MPLS VPN

Carriers′carriers的BGP/MPLSVPN是一种递归嵌套的VPN网络结构。在分析了现有IPv4网络中其实现方法与不足的基础上,利用BGP的权能属性及多协议扩展属性,提出了一种在IPv4/v6混合网络中,基于跨域Carriers′carri-ers结构的BGP/MPLSVPN解决方案。该方案以在核心骨干网及VPN承载网络中增设路由反射器为思路,能够很好地解决各级VPN的路由学习及业务流转发。

Carriersr carriers BGP/MPLS VPN is a recursive and nested VPN network topology. In this paper,its principle and shortcoming in IPv4 environment are analyzed carefully. Based on the characteristics of capability and multi -protocol extension of BGP,a novel approach is proposed to resolve carriersr carriers BGP/MPLS VPN span multi -areas in IPv4/v6 hybrid network. This approach set up router reflectors in backbone and VPN carrying networks respectively,and can realize VPN routes learning and traffic forwarding effectively for each class.