Methods and systems for providing MPLS-based layer-2 virtual private network services
    3.
    发明授权
    Methods and systems for providing MPLS-based layer-2 virtual private network services 有权
    提供基于MPLS的第2层虚拟专网服务的方法和系统

    公开(公告)号:US07872991B2

    公开(公告)日:2011-01-18

    申请号:US10357358

    申请日:2003-02-04

    IPC分类号: H04L12/28

    摘要: Methods and systems for forwarding packets over Label Switched Paths (LSPs) in a Virtual Private Network (VPN) are implemented within a Layer-2 architecture. A system includes a number of multi-purpose nodes connected by a number of multi-protocol label switching (MPLS) LSP links. Each multi-purpose node contains at least one bridging module (BM) that runs an extension of a bridging protocol (BP) contained in the IEEE 802.1d standard. The BP is used to establish MPLS LSPs between the BMs. The BP then generates a spanning tree using a spanning tree program to establish an optimal number of active LSPs. The remaining LSPs are then set to “inactive” The BM de-allocates the resources assigned to inactive LSPs and makes the resources available to other active LSPs.

    摘要翻译: 用于在虚拟专用网(VPN)中的标签交换路径(LSP)上转发数据包的方法和系统在第二层架构中实现。 一种系统包括通过多个多协议标签交换(MPLS)LSP链路连接的多个多用途节点。 每个多用途节点包含运行IEEE 802.1d标准中包含的桥接协议(BP)的扩展的至少一个桥接模块(BM)。 BP用于在BM之间建立MPLS LSP。 BP然后使用生成树程序生成生成树,以建立最佳数量的活动LSP。 剩余的LSP然后被设置为“不活动”BM去分配分配给非活动LSP的资源,并使资源可用于其他活动LSP。