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发明授权
US08379511B2 System for securing the access to a destination in a virtual private network 有权
用于保护对虚拟专用网络中的目的地的访问的系统

System for securing the access to a destination in a virtual private network
摘要：
A system for securing the access to a destination of a virtual private network (VPNA) connected to a nominal access router (PE3) includes at least one core router (P2) adapted to: detect a failure affecting communication with the nominal access router (PE3); and switch the traffic to a protector access router (PE6) in a back-up tunnel bypassing the nominal access router (PE3). The protector access router (PE6) is adapted: to replace, in an MPLS packet, a nominal VPN label specific to the nominal access router (PE3) by a back-up VPN label specific to a back-up access router (PE4) connected to that destination; and to redirect said packet to the back-up access router (PE4) in a tunnel bypassing the nominal access router (PE3).
摘要（中）：

用于保护对连接到标称接入路由器（PE3）的虚拟专用网络（VPNA）的目的地的访问的系统包括至少一个核心路由器（P2），其适于：检测影响与标称接入路由器（PE3）的通信的故障 ）; 并将流量切换到旁路标称接入路由器（PE3）的备用隧道中的保护接入路由器（PE6）。 保护接入路由器（PE6）适用于：在MPLS数据包中，通过连接的备用接入路由器（PE4）特有的备用VPN标签来替换标称接入路由器（PE3）特有的标称VPN标签 到目的地 并将所述分组重定向到绕过标称接入路由器（PE3）的隧道中的备用接入路由器（PE4）。

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