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    • 7. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING MULTICAST TRACES IN MPLS NETWORKS
    • 在MPLS网络中执行多播路由的方法和设备
    • US20120033667A1
    • 2012-02-09
    • US12850788
    • 2010-08-05
    • Srikrishnan VenkataramanKanwar SinghPradeep G. Jain
    • Srikrishnan VenkataramanKanwar SinghPradeep G. Jain
    • H04L12/56
    • H04L45/16H04L12/18H04L45/48H04L45/50
    • A multicast path trace capability is provided for tracing a multicast path from a root node to a leaf node where the trace originates at the leaf node. The leaf node sends a multicast trace request to the root node. The root node receives the multicast trace request and initiates a path trace request for collecting path information associated with the multicast path. The root node receives at least one path trace response, in response to the path trace request, which includes path information associated with the multicast path. The root node sends a multicast trace response, including the collected path information, to the leaf node. The leaf node receives the multicast trace response including the path information. The leaf node derives end-to-end path information for the multicast path using the path information received in the multicast trace response. The multicast path trace capability may be used for tracing an MPLS multicast path (e.g., a P2MP LSP) from a root node to a leaf node of the MPLS multicast tree. The multicast path trace capability may be used for tracing multicast paths in other types of multicast networks.
    • 提供了组播路径跟踪功能,用于跟踪从根节点到叶节点的组播路径,其中跟踪始于叶节点。 叶节点向根节点发送组播跟踪请求。 根节点接收组播跟踪请求,并发起路径跟踪请求,收集与组播路径相关的路径信息。 根节点响应于包括与多播路径相关联的路径信息的路径跟踪请求,接收至少一个路径跟踪响应。 根节点向叶节点发送包括收集的路径信息的组播跟踪响应。 叶节点接收包括路径信息的组播跟踪响应。 叶节点使用在多播跟踪响应中接收到的路径信息来导出多播路径的端到端路径信息。 组播路径跟踪功能可以用于跟踪MPLS组播树的根节点到叶节点的MPLS组播路径(例如,P2MP LSP)。 组播路径跟踪功能可用于跟踪其他类型组播网络中的组播路径。
    • 9. 发明申请
    • Streaming buffer system for variable sized data packets
    • 用于可变大小数据包的流缓冲系统
    • US20060268913A1
    • 2006-11-30
    • US11139070
    • 2005-05-27
    • Kanwar SinghDhiraj Kumar
    • Kanwar SinghDhiraj Kumar
    • H04L12/28H04J3/24H04L12/56
    • H04L49/9073H04L49/90H04L49/9042H04L69/12
    • A system for streaming incoming data packets into a buffer memory is presented. The system may receive incoming data packets over a variety of interfaces and separate the data packet into a header page and one or more data page. The system may interface with a header processor and send header pages to the header processor to be modified. Data pages from the incoming data packets are streamed to a central staging memory, allowing the use of a simple first-in-first-out (FIFO) buffer. The system may receive modified headers from the header processor and provide multiple copies of data packets for multicast or sampling purposes. Data packet copies may then be written to an external memory buffer over one or more external memory channels. The system may also provide an error recovery process to account for corrupt data packets streamed to the external memory buffer.
    • 提出了一种将输入数据包流入缓冲存储器的系统。 系统可以通过各种接口接收输入数据分组,并将数据分组分离成头部页面和一个或多个数据页面。 该系统可以与头部处理器接口,并将头部页面发送到头部处理器以进行修改。 来自传入数据包的数据页被流传输到中央登记存储器,允许使用简单的先进先出(FIFO)缓冲区。 该系统可以从报头处理器接收修改的报头,并提供数据分组的多个副本以进行多播或采样。 然后可以通过一个或多个外部存储器通道将数据分组副本写入外部存储器缓冲器。 该系统还可以提供错误恢复过程来解决流向外部存储器缓冲器的损坏的数据分组。
    • 10. 发明授权
    • System and method providing standby bypass for double failure protection in MPLS network
    • 在MPLS网络中提供双重故障保护的备用旁路的系统和方法
    • US08982691B2
    • 2015-03-17
    • US13630908
    • 2012-09-28
    • Pradeep JainKanwar SinghSrikrishnan Venkataraman
    • Pradeep JainKanwar SinghSrikrishnan Venkataraman
    • G01R31/08H04L12/26
    • H04L12/26H04L43/00H04L45/22H04L45/50
    • A method for providing a Backup Label Switched Path for a specified Bypass Label Switch Path is disclosed. The method for providing a Backup Label Switched Path for a specified Bypass Label Switch Path includes establishing a Bypass LSP having an end-to-end path; obtaining the nodes traversed by the end-to-end path; generating a request to a path calculator which using the nodes provided on the end-to-end path calculates a path disjoint to those nodes; and signaling the calculated disjoint path as a Backup LSP for the Bypass LSP. The method for providing a Backup Label Switched Path for a specified Bypass Label Switch Path provides protection advantages over systems known in the art by providing capability for handling double failure scenarios.
    • 公开了一种用于为指定的旁路标签交换路径提供备份标签交换路径的方法。 用于为指定的旁路标签交换路径提供备份标签交换路径的方法包括建立具有端到端路径的旁路LSP; 获取由端到端路径遍历的节点; 生成对使用提供在端到端路径上的节点的路径计算器的请求计算与这些节点不相交的路径; 并将计算出的不相交路径信令作为旁路LSP的备份LSP。 用于为指定的旁路标签交换路径提供备份标签交换路径的方法通过提供处理双重故障情形的能力,提供了与本领域已知的系统相比的保护优点。