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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。
BGP / MPLSVPN for Carriers’carriers is a recursive nested VPN network structure. Based on the analysis of the existing methods and deficiencies in the existing IPv4 networks, this paper proposes a new algorithm based on the cross-domain Carriers’carri-ers structure in IPv4 / v6 hybrid networks by using the attributes of BGP and multi-protocol extensions. BGP / MPLSVPN solution. The solution is based on the idea of adding a route reflector in the core backbone network and the VPN bearer network, which can well solve the routing learning and service flow forwarding of VPNs at all levels.