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    • 1. 发明授权
    • Method and node for discovering topology structure in multiprotocol label switching ring network
    • 在多协议标签交换环网中发现拓扑结构的方法和节点
    • US07697461B2
    • 2010-04-13
    • US11695116
    • 2007-04-02
    • Yuli ShiHuaixue WanXingyue QuanYang Yang
    • Yuli ShiHuaixue WanXingyue QuanYang Yang
    • H04L12/28
    • H04L41/12H04L12/42H04L12/43H04L45/02H04L45/50
    • Embodiments of the present invention provide a method and a node for discovering topology structure automatically in a Multi Protocol Label Switching (MPLS) ring network. The method includes: when receiving a topology discovering message, determining, by a node in the MPLS ring network, whether the topology discovering message is sent by the node; if yes, updating information of topology structure of the MPLS ring network stored in the node according to information of topology structure of the MPLS ring network carried by the topology discovering message; otherwise, appending information of topology structure of the node to the topology discovering message and forwarding the topology discovering message to a next node. Thus, the network topology may not depend on the topology of the physical layer network and the speed of discovering topology structure of the ring network is increased.
    • 本发明的实施例提供一种用于在多协议标签交换(MPLS)环网中自动发现拓扑结构的方法和节点。 该方法包括:当接收到拓扑发现消息时,由MPLS环网中的节点确定拓扑发现消息是否由节点发送; 如果是,根据拓扑发现消息承载的MPLS环网拓扑结构信息,更新存储在节点中的MPLS环网的拓扑结构信息; 否则,将拓扑结构的信息附加到拓扑发现消息,并将拓扑发现消息转发到下一个节点。 因此,网络拓扑可能不依赖于物理层网络的拓扑结构,环网拓扑结构的发现速度提高。