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    • 62. 发明授权
    • Failure localisation in a MPLS-TP network
    • MPLS-TP网络中的故障定位
    • US08611353B2
    • 2013-12-17
    • US13321668
    • 2009-05-29
    • Wei ZhaoLoa Andersson
    • Wei ZhaoLoa Andersson
    • H04L12/28H04L12/24
    • H04L41/0677H04L45/10H04L45/26H04L45/28H04L45/304H04L45/50H04L45/54
    • The present invention relates to methods and arrangements in an MPLS-TP network, comprising a plurality of interconnected routers configured for MPLS-TP, wherein at least a first router is defined as an originating Maintenance End Point, MEP, a second router is defined as a targeting MEP and the third router is defined as a Maintenance Intermediate Point, MIP. The basic idea of the present invention is to associate a table with each MIP and MEP, wherein the tables comprises information related to the MEPs of the MPLS-TP network and the information from the tables is inserted in the reply packets and forwarded packets. By using this information, the OAM packets can find the subsequent MIP or MEP and failure localization may be performed.
    • 本发明涉及MPLS-TP网络中的方法和装置,包括配置用于MPLS-TP的多个互连路由器,其中至少第一路由器被定义为始发维护终点MEP,第二路由器被定义为 定位MEP和第三个路由器被定义为维护中间点MIP。 本发明的基本思想是将表与每个MIP和MEP相关联,其中表包括与MPLS-TP网络的MEP相关的信息,并且来自表的信息被插入到应答分组和转发的分组中。 通过使用该信息,OAM分组可以找到后续的MIP或MEP,并且可以执行故障定位。
    • 69. 发明申请
    • ARRANGEMENT AND A METHOD FOR HANDLING FAILURES IN A NETWORK
    • 安排和处理网络故障的方法
    • US20100208595A1
    • 2010-08-19
    • US12682470
    • 2007-10-09
    • Wei ZhaoJohan Kölhi
    • Wei ZhaoJohan Kölhi
    • H04L12/24
    • H04L41/0672H04L41/0213H04L41/0659H04L41/0677H04L43/0811H04L43/10H04L45/26H04L45/66H04L69/40
    • The present invention relates to an arrangement comprising an Ethernet carrier network, managed by a management system (100) and comprising a number of levels of management domains, each comprising a number of edge nodes (10, 20, 30, 40) and a number of intermediate nodes (1, 2, 3, 4, 5, 6, 7, 8). Each edge node (10, 20, 30, 40) comprises fault detection of connectivity check messages and fault locating means with holding means (11, 21, 31, 41) adapted to hold path information for the paths to all other edge nodes. A fault detection means of an edge node having detected a fault is adapted to activate edge node fault locating means to locate the fault using the patch information in the edge node holding means to find a first target intermediate node substantially in the middle of the path containing the fault, and to, directly, send a first loop back message to said intermediate node. A response from said intermediate node indicates that the fault is located at the distant portion of the path, no response indicates that the fault is located at the proximate portion of the path. Further loop back messages are sent to consecutively identified intermediate nodes of the respective path portion identified to contain the fault by the respective preceding loop back message until the fault is localized.
    • 本发明涉及一种包括由管理系统(100)管理并且包括多个级别的管理域的以太网运营商网络的装置,每个管理域包括多个边缘节点(10,20,30,40)和数量 的中间节点(1,2,3,4,5,6,7,8)。 每个边缘节点(10,20,30,40)包括连接性检查消息的故障检测和具有适于保持用于所有其他边缘节点的路径的路径信息的保持装置(11,21,31,41)的故障定位装置。 已经检测到故障的边缘节点的故障检测装置适于激活边缘节点故障定位装置,以使用边缘节点保持装置中的补丁信息来定位故障,以在第 故障,并且直接向所述中间节点发送第一循环消息。 来自所述中间节点的响应指示故障位于路径的远处,没有响应指示故障位于路径的最近部分。 进一步的循环消息被发送到被识别为通过相应的先前循环消息识别为包含故障的相应路径部分的连续标识的中间节点,直到故障被定位为止。