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1. 发明授权

US09608898B2 Method and apparatus for performing multicast traces in MPLS networks 有权
公开(公告)号：US09608898B2
公开(公告)日：2017-03-28
申请号：US12850788
申请日：2010-08-05
申请人： Srikrishnan Venkataraman , Kanwar Singh , Pradeep G. Jain
发明人： Srikrishnan Venkataraman , Kanwar Singh , Pradeep G. Jain
IPC分类号： H04L12/761 , H04L12/753 , H04L12/18 , H04L12/723
CPC分类号： H04L45/16 , H04L12/18 , H04L45/48 , H04L45/50
摘要： 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.

2. 发明申请

US20120033667A1 METHOD AND APPARATUS FOR PERFORMING MULTICAST TRACES IN MPLS NETWORKS 有权
标题翻译：在MPLS网络中执行多播路由的方法和设备
公开(公告)号：US20120033667A1
公开(公告)日：2012-02-09
申请号：US12850788
申请日：2010-08-05
申请人： Srikrishnan Venkataraman , Kanwar Singh , Pradeep G. Jain
发明人： Srikrishnan Venkataraman , Kanwar Singh , Pradeep G. Jain
IPC分类号： H04L12/56
CPC分类号： H04L45/16 , H04L12/18 , H04L45/48 , H04L45/50
摘要： 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.
摘要翻译：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。

3. 发明授权

US08451717B2 Method and apparatus for rapid switchover from primary to standby multicast trees 有权
标题翻译：从主要到备用组播树快速切换的方法和装置
公开(公告)号：US08451717B2
公开(公告)日：2013-05-28
申请号：US12847250
申请日：2010-07-30
申请人： Srikrishnan Venkataraman , Sivaramakrishna Kuditipudi , Prashanth Ishwar , Pradeep G. Jain , Jeremy Fine , Will Lockhart
发明人： Srikrishnan Venkataraman , Sivaramakrishna Kuditipudi , Prashanth Ishwar , Pradeep G. Jain , Jeremy Fine , Will Lockhart
IPC分类号： G06F11/00
CPC分类号： H04L12/1877 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/50
摘要： A capability is provided for switching between primary and standby multicast trees on a network egress node of a multicast network. The network egress node includes a first MPLS LABEL Record including a first tree identifier of the first multicast tree, a second MPLS LABEL Record including a second tree identifier of the second multicast tree, and a MULTICAST Record including a plurality of primary tree identifiers and a plurality of standby tree identifiers. The MPLS LABEL Records include parameters, respectively, where the values of the parameters are indicative of respective packet processing rules to be applied for determining whether to accept or discard packets. When the parameter of an MPLS LABEL Record is set to a first value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record only to primary tree identifiers of the MULTICAST Record. When the parameter of an MPLS LABEL Record is set to a second value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record to primary tree identifiers of the MULTICAST Record or standby tree identifiers of the MULTICAST Record.
摘要翻译：提供了用于在组播网络的网络出口节点上的主要和备用组播树之间切换的能力。网络出口节点包括包括第一多播树的第一树标识符的第一MPLS标签记录，包括第二多播树的第二树标识符的第二MPLS LABEL记录和包括多个主树标识符的MULTICAST记录和多个备用树标识符。 MPLS LABEL记录分别包括参数，其中参数的值表示要应用于确定是否接受或丢弃分组的各个分组处理规则。当MPLS标签记录的参数设置为第一个值时，通过将MPLS LABEL记录的树标识符与仅主节点标识符的主树标识符进行比较来执行是否接受或丢弃经由相关联的多播树接收的分组的确定 MULTICAST记录。当MPLS LABEL记录的参数设置为第二个值时，通过将MPLS LABEL记录的树形标识符与对应的多播树的主树标识符进行比较来执行是否接受或丢弃通过关联的多播树接收到的数据包的确定 MULTICAST MULTICAST记录的记录或备用树标识符。

4. 发明授权

US09571381B2 System and method for inter-domain RSVP-TE LSP load balancing 有权
标题翻译：域间RSVP-TE LSP负载均衡的系统和方法
公开(公告)号：US09571381B2
公开(公告)日：2017-02-14
申请号：US13837531
申请日：2013-03-15
申请人： Pradeep G Jain , Kanwar D Singh , Jaishal Shah , Srikrishnan Venkataraman
发明人： Pradeep G Jain , Kanwar D Singh , Jaishal Shah , Srikrishnan Venkataraman
IPC分类号： H04L12/26 , H04L12/761 , H04L12/803 , H04L12/723 , H04L12/729 , H04L12/801 , H04L12/913 , H04L12/715 , H04L12/721
CPC分类号： H04L45/16 , H04L43/16 , H04L45/04 , H04L45/124 , H04L45/125 , H04L45/50 , H04L47/125 , H04L47/35 , H04L47/724
摘要： A system, method and apparatus for causing network routers such as Area Border Routers (ABRs) to use a preferred tie-breaking mechanism to select one path in the event of an ERO expansion operation resulting in multiple equal cost paths.
摘要翻译：一种用于使诸如区域边界路由器（ABR）之类的网络路由器使用优选的断开机制来在ERO扩展操作的情况下选择一个路径导致多个相等的成本路径的系统，方法和装置。

5. 发明授权

US09088485B2 System, method and apparatus for signaling and responding to ERO expansion failure in inter-domain TE LSP 有权
标题翻译：用于信令和响应域间TE LSP中的ERO扩展故障的系统，方法和装置
公开(公告)号：US09088485B2
公开(公告)日：2015-07-21
申请号：US13722642
申请日：2012-12-20
申请人： Pradeep G Jain , Kanwar D Singh , Nisha Desai , Srikrishnan Venkataraman
发明人： Pradeep G Jain , Kanwar D Singh , Nisha Desai , Srikrishnan Venkataraman
IPC分类号： H04L12/24 , H04L12/803 , H04L12/751 , H04L12/707 , H04L12/703 , H04L12/913 , H04L12/723
CPC分类号： H04L41/0686 , H04L41/0654 , H04L41/0659 , H04L41/0668 , H04L45/026 , H04L45/22 , H04L45/28 , H04L45/50 , H04L47/125 , H04L47/724
摘要： A system, method and apparatus for performing a constraint base shortest path computation (CSPF) in a manner excluding those nodes indicated as having failed an ERO expansion, the indication being provided via an error code within an RSVP path message associated with setup of an alternate LSP.
摘要翻译：一种用于以排除指示为失败的ERO扩展的那些节点的方式执行约束基本最短路径计算（CSPF）的系统，方法和装置，所述指示是经由与备选的设置相关联的RSVP路径消息内的错误代码提供的 LSP。

6. 发明授权

US08948051B2 System and method for efficient MVPN source redundancy with S-PMSI 有权
标题翻译： S-PMSI高效MVPN源冗余的系统和方法
公开(公告)号：US08948051B2
公开(公告)日：2015-02-03
申请号：US13623172
申请日：2012-09-20
申请人： Srikrishnan Venkataraman , Pradeep G Jain , Kanwar D Singh , Jaishal Shah
发明人： Srikrishnan Venkataraman , Pradeep G Jain , Kanwar D Singh , Jaishal Shah
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L43/16 , H04L45/04 , H04L45/124 , H04L45/125 , H04L45/50 , H04L47/125 , H04L47/35 , H04L47/724
摘要： A system, method and apparatus for source redundant MVPN in which a number of Interface Indices is reduced by leaf node Incoming Label Maps (ILM) including one or more Interface Indices common to multiple tunnels.
摘要翻译：一种用于源冗余MVPN的系统，方法和装置，其中通过叶节点进入标签映射（ILM）减少多个接口指数，其包括多个通道共同的一个或多个接口指数。

7. 发明申请

US20120026866A1 METHOD AND APPARATUS FOR RAPID SWITCHOVER FROM PRIMARY TO STANDBY MULTICAST TREES 有权
标题翻译：从主要到多媒体条的快速切换的方法和装置
公开(公告)号：US20120026866A1
公开(公告)日：2012-02-02
申请号：US12847250
申请日：2010-07-30
申请人： Srikrishnan Venkataraman , Sivaramakrishna Kuditipudi , Prashanth Ishwar , Pradeep G. Jain , Jeremy Fine , Will Lockhart
发明人： Srikrishnan Venkataraman , Sivaramakrishna Kuditipudi , Prashanth Ishwar , Pradeep G. Jain , Jeremy Fine , Will Lockhart
IPC分类号： G06F11/00
CPC分类号： H04L12/1877 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/50
摘要： A capability is provided for switching between primary and standby multicast trees on a network egress node of a multicast network. The network egress node includes a first MPLS LABEL Record including a first tree identifier of the first multicast tree, a second MPLS LABEL Record including a second tree identifier of the second multicast tree, and a MULTICAST Record including a plurality of primary tree identifiers and a plurality of standby tree identifiers. The MPLS LABEL Records include parameters, respectively, where the values of the parameters are indicative of respective packet processing rules to be applied for determining whether to accept or discard packets. When the parameter of an MPLS LABEL Record is set to a first value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record only to primary tree identifiers of the MULTICAST Record. When the parameter of an MPLS LABEL Record is set to a second value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record to primary tree identifiers of the MULTICAST Record or standby tree identifiers of the MULTICAST Record.
摘要翻译：提供了用于在组播网络的网络出口节点上的主要和备用组播树之间切换的能力。网络出口节点包括包括第一多播树的第一树标识符的第一MPLS标签记录，包括第二多播树的第二树标识符的第二MPLS LABEL记录和包括多个主树标识符的MULTICAST记录和多个备用树标识符。 MPLS LABEL记录分别包括参数，其中参数的值表示要应用于确定是否接受或丢弃分组的各个分组处理规则。当MPLS标签记录的参数设置为第一个值时，通过将MPLS LABEL记录的树标识符与仅主节点标识符的主树标识符进行比较来执行是否接受或丢弃经由相关联的多播树接收的分组的确定 MULTICAST记录。当MPLS LABEL记录的参数设置为第二个值时，通过将MPLS LABEL记录的树形标识符与对应的多播树的主树标识符进行比较来执行是否接受或丢弃通过关联的多播树接收到的数据包的确定 MULTICAST MULTICAST记录的记录或备用树标识符。

8. 发明授权

US08982691B2 System and method providing standby bypass for double failure protection in MPLS network 有权
标题翻译：在MPLS网络中提供双重故障保护的备用旁路的系统和方法
公开(公告)号：US08982691B2
公开(公告)日：2015-03-17
申请号：US13630908
申请日：2012-09-28
申请人： Pradeep Jain , Kanwar Singh , Srikrishnan Venkataraman
发明人： Pradeep Jain , Kanwar Singh , Srikrishnan Venkataraman
IPC分类号： G01R31/08 , H04L12/26
CPC分类号： H04L12/26 , H04L43/00 , H04L45/22 , H04L45/50
摘要： 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.
摘要翻译：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。

9. 发明申请

US20140092722A1 SYSTEM AND METHOD PROVIDING STANDBY BYPASS FOR DOUBLE FAILURE PROTECTION IN MPLS NETWORK 有权
标题翻译：在MPLS网络中为双重故障保护提供备用旁路的系统和方法
公开(公告)号：US20140092722A1
公开(公告)日：2014-04-03
申请号：US13630908
申请日：2012-09-28
申请人： Pradeep Jain , Kanwar Singh , Srikrishnan Venkataraman
发明人： Pradeep Jain , Kanwar Singh , Srikrishnan Venkataraman
IPC分类号： H04L12/26
CPC分类号： H04L12/26 , H04L43/00 , H04L45/22 , H04L45/50
摘要： 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.
摘要翻译：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。

10. 发明授权

US08166215B2 Method to control delay between lanes 有权
标题翻译：控制车道延误的方法
公开(公告)号：US08166215B2
公开(公告)日：2012-04-24
申请号：US11322059
申请日：2005-12-28
申请人： Srikrishnan Venkataraman , Jayashree Kar , Sudarshan D. Solanki , Priyavadan Ramdas Patel , Michael M. DeSmith , David G. Figueroa
发明人： Srikrishnan Venkataraman , Jayashree Kar , Sudarshan D. Solanki , Priyavadan Ramdas Patel , Michael M. DeSmith , David G. Figueroa
IPC分类号： G06F3/00 , G06F5/00 , H03K3/00 , H03K17/16 , G03F1/00
CPC分类号： G06F13/4004
摘要： Method and apparatus to control delay between lanes in an I/O interface is disclosed. To control the delay between the lanes in the I/O system a programmed delay may be determined and introduced between the lanes. For this purpose the effective time “T” of the lanes is determined. The number of lanes “N” in the I/O interface is identified. The programmed lane to lane delay “D” is determined and a delay circuit having the programmed delay may be introduced between the lanes to reduce AC peak to peak noise in the I/O system.
摘要翻译：公开了一种用于控制I / O接口中的通道之间的延迟的方法和装置。为了控制I / O系统中的通道之间的延迟，可以确定并在车道之间引入编程的延迟。为此，确定车道的有效时间“T”。识别I / O接口中的通道数“N”。确定经编程的车道延迟“D”，并且可以在车道之间引入具有编程延迟的延迟电路，以减少I / O系统中的AC峰峰值噪声。

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