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公开(公告)号：US10171263B2
公开(公告)日：2019-01-01
申请号：US15826900
申请日：2017-11-30
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alfred C. Lindem, III , Peter Psenak , Ijsbrand Wijnands
IPC: H04L12/46 , H04L12/721 , H04L12/751
Abstract: Various systems and methods for bypassing one or more non-capable nodes. For example, one method involves a capable node determining that an adjacent node is non-capable, where capable nodes are configured to implement a data plane capability and non-capable nodes are not. The method then involves identifying a downstream node that is capable. The downstream node is on a shortest path. The method also involves generating information that identifies a tunnel to the downstream node.
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公开(公告)号：US20170344594A1
公开(公告)日：2017-11-30
申请号：US15254943
申请日：2016-09-01
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alfred C. Lindem, III , Keyur Patel , Abhay Roy , Derek Man-Kit Yeung
Abstract: Aspects of the embodiments are directed to synchronizing at least a portion of a link-state database. A network element can lose an adjacency. The network element can transmit a request to a neighboring network element for synchronization of a link-state database. The request can include a version number of a last synchronized link-state database from the neighboring network element. The neighboring network element can determine whether the version of the link-state database is greater than or less than a copy of the link-state database stored by the neighboring network element. If the requested version number is less than the neighboring network element's link-state database version number, then the neighboring network element can send changes to the link-state database since the requested link-state database version number.
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3.发明申请公开(公告)号：US20140003289A1
公开(公告)日：2014-01-02
申请号：US14013990
申请日：2013-08-29
Applicant: Cisco Technology, Inc.
Inventor： Yi Yang , Alvaro E. Retana , James Ng , Abhay Roy , Alfred C. Lindem, III , Sina Mirtorabi , Timothy M. Gage , Syed Khalid Raza
IPC: H04L12/751
CPC classification number: H04L45/021 , H04L45/02 , H04L45/025 , H04L45/54 , H04L45/60 , H04L47/10 , H04L63/0407
Abstract: In one embodiment, a first router determines whether a network coupling the first router to one or more second routers is transit-only, wherein transit-only indicates connecting only routers to provide for transmission of data from router to router. When the network is transit-only, the first router generates an Open Shortest Path First (OSPF) Link State Advertisement (LSA) that includes an address for the network and a designated network mask. The designated network mast operates as a transit-only identification that indicates the address should not be installed in a Routing Information Base (RIB) upon receipt of the OSPF LSA at the one or more second routers. When the network is not transit-only, the first router generates an OSPF LSA that includes the address for the network but does not include the designated network mask, to permit installation of the address in a RIB upon receipt of the OSPF LSA at the one or more second routers.
Abstract translation: 在一个实施例中，第一路由器确定将第一路由器耦合到一个或多个第二路由器的网络是否是仅运输，其中，传输仅指示仅连接路由器以提供从路由器到路由器的数据传输。 当网络仅传输时，第一路由器生成包括网络地址和指定网络掩码的开放最短路径优先（OSPF）链路状态通告（LSA）。 指定的网络桅杆作为仅传输标识操作，其指示在一个或多个第二路由器上接收到OSPF LSA时，该地址不应安装在路由信息库（RIB）中。 当网络不通过时，第一个路由器生成包含网络地址但不包括指定网络掩码的OSPF LSA，以便在接收到OSPF LSA时在一个RIB中安装该地址 或更多的第二路由器。
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公开(公告)号：US10671590B2
公开(公告)日：2020-06-02
申请号：US15254943
申请日：2016-09-01
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alfred C. Lindem, III , Keyur Patel , Abhay Roy , Derek Man-Kit Yeung
Abstract: Aspects of the embodiments are directed to synchronizing at least a portion of a link-state database. A network element can lose an adjacency. The network element can transmit a request to a neighboring network element for synchronization of a link-state database. The request can include a version number of a last synchronized link-state database from the neighboring network element. The neighboring network element can determine whether the version of the link-state database is greater than or less than a copy of the link-state database stored by the neighboring network element. If the requested version number is less than the neighboring network element's link-state database version number, then the neighboring network element can send changes to the link-state database since the requested link-state database version number.
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公开(公告)号：US20220311630A1
公开(公告)日：2022-09-29
申请号：US17839056
申请日：2022-06-13
Applicant: Cisco Technology, Inc.
Inventor： Alfred C. Lindem, III , Ravi Kiran Chintallapudi , Gaurav Shrivastava , Jining Tian , Praleshkumar Gunvantray Patel
IPC: H04L12/18 , H04L67/1095
Abstract: The present disclosure is directed to a centralized control policy for multicast replicator selection. Methods include receiving multicast advertisements from a plurality of edge devices configured with multicast protocol, each multicast advertisement including information indicating whether an associated edge device is a replicator; analyzing multicast advertisements from the plurality of edge devices to identify one or more replicators; receiving a centralized policy configuration associated with at least one control policy that includes a preference related to selection of at least one replicator from the identified one or more replicators, the preference applicable to a defined set of edge devices from the plurality of edge devices; and updating at least one multicast advertisement with the control policy for transmission to the defined set of edge devices, the updated at least one multicast advertisement indicating the preference for replicator selection for the defined set of edge devices based on the control policy.
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Patent Agency Ranking
公开(公告)号：US20220166639A1
公开(公告)日：2022-05-26
申请号：US17101968
申请日：2020-11-23
Applicant: Cisco Technology Inc.
Inventor： Alfred C. Lindem, III , Ravi Kiran Chintallapudi , Gaurav Shrivastava , Jining Tian , Praleshkumar Gunvantray Patel
Abstract: The present disclosure is directed to a centralized control policy for multicast replicator selection. Methods include receiving multicast advertisements from a plurality of edge devices configured with multicast protocol, each multicast advertisement including information indicating whether an associated edge device is a replicator; analyzing multicast advertisements from the plurality of edge devices to identify one or more replicators; receiving a centralized policy configuration associated with at least one control policy that includes a preference related to selection of at least one replicator from the identified one or more replicators, the preference applicable to a defined set of edge devices from the plurality of edge devices; and updating at least one multicast advertisement with the control policy for transmission to the defined set of edge devices, the updated at least one multicast advertisement indicating the preference for replicator selection for the defined set of edge devices based on the control policy.
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公开(公告)号：US20180159700A1
公开(公告)日：2018-06-07
申请号：US15826900
申请日：2017-11-30
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alfred C. Lindem, III , Peter Psenak , Ijsbrand Wijnands
IPC: H04L12/46 , H04L12/751 , H04L12/721
CPC classification number: H04L12/4633 , H04L45/02 , H04L45/127
Abstract: Various systems and methods for bypassing one or more non-capable nodes. For example, one method involves a capable node determining that an adjacent node is non-capable, where capable nodes are configured to implement a data plane capability and non-capable nodes are not. The method then involves identifying a downstream node that is capable. The downstream node is on a shortest path. The method also involves generating information that identifies a tunnel to the downstream node.
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公开(公告)号：US12177032B2
公开(公告)日：2024-12-24
申请号：US17710071
申请日：2022-03-31
Applicant: Cisco Technology, Inc.
IPC: H04L12/18 , H04L12/44 , H04L45/122
Abstract: According to certain embodiments, a method by a router in a software-defined wide-area network (SDWAN) includes determining one or more replicators in the SDWAN and generating a multicast distribution tree that includes the determined one or more replicators. The method further includes receiving multicast traffic from a source and creating a (S,G) route for the received multicast traffic. The method further includes replicating the multicast traffic using the multicast distribution tree.
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公开(公告)号：US11362849B1
公开(公告)日：2022-06-14
申请号：US17101968
申请日：2020-11-23
Applicant: Cisco Technology Inc.
Inventor： Alfred C. Lindem, III , Ravi Kiran Chintallapudi , Gaurav Shrivastava , Jining Tian , Praleshkumar Gunvantray Patel
IPC: H04L12/18 , H04L67/1095
Abstract: The present disclosure is directed to a centralized control policy for multicast replicator selection. Methods include receiving multicast advertisements from a plurality of edge devices configured with multicast protocol, each multicast advertisement including information indicating whether an associated edge device is a replicator; analyzing multicast advertisements from the plurality of edge devices to identify one or more replicators; receiving a centralized policy configuration associated with at least one control policy that includes a preference related to selection of at least one replicator from the identified one or more replicators, the preference applicable to a defined set of edge devices from the plurality of edge devices; and updating at least one multicast advertisement with the control policy for transmission to the defined set of edge devices, the updated at least one multicast advertisement indicating the preference for replicator selection for the defined set of edge devices based on the control policy.
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公开(公告)号：US20160218961A1
公开(公告)日：2016-07-28
申请号：US14813268
申请日：2015-07-30
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alfred C. Lindem, III , Peter Psenak , Ijsbrand Wijnands
IPC: H04L12/721 , H04L12/911
CPC classification number: H04L12/4633 , H04L45/02 , H04L45/127
Abstract: Various systems and methods for bypassing one or more non-capable nodes. For example, one method involves a capable node determining that an adjacent node is non-capable, where capable nodes are configured to implement a data plane capability and non-capable nodes are not. The method then involves identifying a downstream node that is capable. The downstream node is on a shortest path. The method also involves generating information that identifies a tunnel to the downstream node.
Abstract translation: 用于绕过一个或多个非能力节点的各种系统和方法。 例如，一种方法涉及能力节点确定相邻节点是无能力的，其中能力节点被配置为实现数据平面能力，并且不能够执行的节点不是。 该方法然后涉及识别能够实现的下游节点。 下游节点在最短路径上。 该方法还涉及生成标识到下游节点的隧道的信息。
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