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1. 发明申请

US20140313886A1 PROTECTION IN A RING NETWORK OF LABEL SWITCHING ROUTERS 审中-公开
标题翻译：标签交换路由器环网中的保护
公开(公告)号：US20140313886A1
公开(公告)日：2014-10-23
申请号：US14354920
申请日：2011-10-28
申请人： Song Yuan , Giovanni Mumolo
发明人： Song Yuan , Giovanni Mumolo
IPC分类号： H04L12/703 , H04L12/723
CPC分类号： H04L45/28 , H04L12/437 , H04L45/50
摘要： A first label switch router (LSR) in a ring network protects multiple service label switched paths (LSPs) using a single bidirectional circular protection LSP tunnel. The first LSR monitors for a failure report responsive to detecting disconnection with a neighbor LSR. The report indirectly indicates either failure of a link to the neighbor LSR or failure of the neighbor LSR itself. Responsive to receiving the report, the first LSR locally re-routes any labeled packets of service LSPs headed toward the failure by placing those packets onto the tunnel in a direction away from the failure, and locally merges any labeled packets received over the tunnel into respective service LSPs headed away from the failure. Local re-routing entails the first LSR dynamically selecting between next-hop service labels and next-next-hop service labels for packets placed onto the tunnel, based on whether the failure is of the link or of the neighbor LSR.
摘要翻译：环网中的第一个标签交换路由器（LSR）使用单个双向循环保护LSP隧道保护多个业务标签交换路径（LSP）。响应于检测到与邻居LSR的断开连接，第一个LSR监视故障报告。该报告间接地指示到邻居LSR的链路故障或邻居LSR本身的故障。响应于接收到报告，第一个LSR通过将这些分组放置在远离故障的方向的隧道上，并且将通过隧道接收到的任何已标记的分组本地合并到相应的分组服务LSP远离故障。基于故障是链路还是相邻LSR，本地重路由需要第一个LSR动态地选择下一跳业务标签和下一跳下一跳业务标签之间的数据包。

2. 发明申请

US20150295725A1 METHOD AND APPARATUS FOR CONFIGURING MULTICAST GROUP 有权
标题翻译：用于配置多播组的方法和装置
公开(公告)号：US20150295725A1
公开(公告)日：2015-10-15
申请号：US14441771
申请日：2012-11-08
申请人： Song YUAN , Giovanni MUMOLO
发明人： Song Yuan , Giovanni Mumolo
IPC分类号： H04L12/18 , H04L12/723
CPC分类号： H04L12/185 , H04L45/16 , H04L45/50
摘要： The embodiments disclose a method and communication node for configuring a multicast group in a Multiple Protocol Label Switching (MPLS) network. The method comprises: obtaining a multicast group configuration request to configure the multicast group of at least one downstream node in the MPLS network, the at least one downstream node may comprise a transit node, a leaf node or the combination thereof; generating a multicast group configuration packet based on the multicast group configuration request; and transmitting the multicast group configuration packet from the root node to the at least one transit node and/or leaf node via a multicast tree in the MPLS network.
摘要翻译：实施例公开了一种用于在多协议标签交换（MPLS）网络中配置多播组的方法和通信节点。该方法包括：获取组播组配置请求，配置MPLS网络中至少一个下游节点的组播组，该至少一个下游节点可以包括传输节点，叶节点或其组合; 根据组播组配置请求生成组播组配置报文; 以及经由所述MPLS网络中的组播树，将所述组播组配置分组从所述根节点发送到所述至少一个传输节点和/或叶节点。

3. 发明授权

US09369376B2 Method enabling fast switching between multicast trees 有权
标题翻译：组播树快速切换的方法
公开(公告)号：US09369376B2
公开(公告)日：2016-06-14
申请号：US14353202
申请日：2011-10-21
申请人： Song Yuan , Mingchao Shao , Giovanni Mumolo
发明人： Song Yuan , Mingchao Shao , Giovanni Mumolo
IPC分类号： H04L1/00 , H04L12/703 , H04L12/761 , H04L12/723 , H04L12/18 , H04L12/26
CPC分类号： H04L45/28 , H04L12/1863 , H04L43/0847 , H04L45/16 , H04L45/50
摘要： Presented are a system and method of detecting a multicast tree link failure and performing a fast switch from the failed multicast tree communication path to a secondary multicast tree communication path. The methods are suitable for leaf nodes in a multiprotocol label switching network. The method generates a count of communication path failure detection packets and a count of communication path failure detection packets plus other packets and compares the counts to determine the status of the link. The system includes two counter components and a comparison component.
摘要翻译：提出了一种检测组播树链路故障并执行从故障组播树通信路径到辅助组播树通信路径的快速切换的系统和方法。该方法适用于多协议标签交换网络中的叶节点。该方法生成通信路径故障检测数据包的计数和通信路径故障检测数据包的计数加上其他数据包，并比较计数以确定链路的状态。该系统包括两个计数器组件和一个比较组件。

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