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    • 1. 发明申请
    • Providing VPLS-like service over native ATM networks
    • 通过本地ATM网络提供类似VPLS的服务
    • US20050129024A1
    • 2005-06-16
    • US10731091
    • 2003-12-10
    • John FisherShay NahumCarl RajsicShawn McAllister
    • John FisherShay NahumCarl RajsicShawn McAllister
    • H04L12/56
    • H04L12/5601H04L2012/5618
    • A method and apparatus are provided for emulating VPLS within an ATM network. Provider Edge devices are configured for the VPLS connections. Each provider edge device advertises its configured VPLS IDs to other provider edge devices by propagating an information group up the PNNI hierarchy, the information group containing an association between an ATM address of the provider edge device and the VPLS ID. Information groups are propagated back down the PNNI hierarchy, so that each lowest level node learns all ATM addresses to be associated with each VPLS ID. For each pair of provider edge devices supporting the same VPLS ID, one of the provider edge devices establishes a virtual circuit between the pair. In this way, a mesh of virtual circuits is established between provider edge devices, and a VPLS-like service can be offered to users without having to implement MPLS. The method of advertising ATM addresses can also be applied to other services requiring a number of interconnections between provider edge devices, such as Virtual Private Networks.
    • 提供了一种在ATM网络内仿真VPLS的方法和装置。 为VPLS连接配置了Provider Edge设备。 每个提供商边缘设备通过将信息组向上传播到PNNI层级来向其他提供商边缘设备发布其配置的VPLS ID,所述信息组包含提供商边缘设备的ATM地址与VPLS ID之间的关联。 信息组被传播回PNNI层次结构,使得每个最低级节点学习与每个VPLS ID相关联的所有ATM地址。 对于支持相同VPLS ID的每对提供商边缘设备,提供商边缘设备之一在该对之间建立虚拟电路。 以这种方式,在提供商边缘设备之间建立虚拟电路网格,并且可以向用户提供类似VPLS的服务,而不必实现MPLS。 广告ATM地址的方法也可以应用于需要诸如虚拟专用网络的提供商边缘设备之间的多个互连的其他服务。