公开(公告)号：US20160142310A1

公开(公告)日：2016-05-19

申请号：US14541125

申请日：2014-11-13

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Israel Means

IPC: H04L12/741 ,  H04L29/06

CPC classification number: H04L45/74 ,  H04L63/0272

Abstract: Methods and apparatus to route traffic in a virtual private network are disclosed herein. An example method to route such traffic includes receiving, at a first provider router that is not an edge router, first route information from a provider edge router. The first route information identifies a customer address in a customer network coupled to the provider edge router. The method also includes replacing, at the first provider router, a first next hop address included in the first route information with a second next hop address. The first next hop address identifies the provider edge router and the second next hop address identifies the first provider router. In some examples, the method also includes advertising the first route information to a second provider router located in a different region than the first provider router. In some examples, before advertising the first route information, a first route target identifying a first set of routers is replaced with a second route target identifying a second set of routers that does not include provider edge routers.

Abstract translation: 本文公开了在虚拟专用网络中路由业务的方法和装置。 路由这种流量的示例性方法包括在不是边缘路由器的第一提供商路由器处接收来自提供商边缘路由器的第一路由信息。 第一路由信息识别耦合到提供商边缘路由器的客户网络中的客户地址。 该方法还包括在第一提供商路由器处用第二下一跳地址替换包含在第一路由信息中的第一下一跳地址。 第一个下一跳地址标识提供商边缘路由器，第二个下一跳地址标识第一个提供商路由器。 在一些示例中，该方法还包括将第一路由信息通告给位于与第一提供商路由器不同的区域中的第二提供商路由器。 在一些示例中，在广告第一路由信息之前，标识第一组路由器的第一路由目标被替换为标识不包括提供商边缘路由器的第二组路由器的第二路由目标。