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公开(公告)号：US20210377109A1
公开(公告)日：2021-12-02
申请号：US16883103
申请日：2020-05-26
Applicant: Cisco Technology Inc.
Inventor： Gaurav Shrivastava , Alfred C. Lindem, III , Ravi Kiran Chintallapudi , Torsha Banerjee Das
IPC: H04L12/24 , H04L12/721
Abstract: The present disclosure is directed to systems and methods for auto-provisioning hubs and spokes in a SD-WAN network, and includes the performance of operations and/or the steps of receiving first information from a first network hub, the first network hub one of a plurality of network hubs, the first information indicating a first set of properties associated with the first network hub; publishing the first information to a plurality of network spokes, the plurality of network spokes determining whether to subscribe to the first network hub based on the first information; receiving subscription information from a first network spoke of the plurality of network spokes, the subscription information indicating the first network spoke subscribing to the first network hub; and creating at least one dynamic control policy to establish a forwarding path for the first network spoke through the first network hub.
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公开(公告)号：US20250071061A1
公开(公告)日：2025-02-27
申请号：US18456266
申请日：2023-08-25
Applicant: Cisco Technology, Inc.
Inventor： Satish Kumar Mahadevan , Sheikh M Qumruzzaman , Ravi Kiran Chintallapudi , Prosenjit Sarkar , Sourav Sen , Balaji Sundararajan , Rahul P Hardikar
IPC: H04L45/76
Abstract: Systems and methods are provided for re-balancing and healing of an SD-WAN in an unbalanced state and/or experiencing one or more failure states. In response to a request to connect to a new controller resulting from OMP load shedding from a first controller, the system can identify other controllers capable of handling the load requirements of the edge router. The system can incorporate the controller group preference of the edge router and select a second controller based on the identified other controllers and within the preferred controller group. If not possible, the system can temporarily assign the edge router to non-preferred controller groups and move them back to controllers in the preferred controller group once it becomes viable. The system further enhances OMP graceful restart (GR) logic to incorporate the load shedding effect and avoid unnecessary route retention that GR entails.
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公开(公告)号：US12238006B1
公开(公告)日：2025-02-25
申请号：US18456266
申请日：2023-08-25
Applicant: Cisco Technology, Inc.
Inventor： Satish Kumar Mahadevan , Sheikh M Qumruzzaman , Ravi Kiran Chintallapudi , Prosenjit Sarkar , Sourav Sen , Balaji Sundararajan , Rahul P Hardikar
IPC: G06F15/173 , H04L45/76
Abstract: Systems and methods are provided for re-balancing and healing of an SD-WAN in an unbalanced state and/or experiencing one or more failure states. In response to a request to connect to a new controller resulting from OMP load shedding from a first controller, the system can identify other controllers capable of handling the load requirements of the edge router. The system can incorporate the controller group preference of the edge router and select a second controller based on the identified other controllers and within the preferred controller group. If not possible, the system can temporarily assign the edge router to non-preferred controller groups and move them back to controllers in the preferred controller group once it becomes viable. The system further enhances OMP graceful restart (GR) logic to incorporate the load shedding effect and avoid unnecessary route retention that GR entails.
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公开(公告)号：US20240340347A1
公开(公告)日：2024-10-10
申请号：US18349778
申请日：2023-07-10
Applicant: Cisco Technology, Inc.
Inventor： Prosenjit Sarkar , Satish Kumar Mahadevan , Ravi Kiran Chintallapudi , Mahendra Kumar Samarya
IPC: H04L67/141 , H04L41/0803
CPC classification number: H04L67/141 , H04L41/0803
Abstract: Disclosed herein are systems, methods, and computer-readable media for upgrading vSmart controllers. In one aspect, a method includes an edge router receiving a notification from a vSmart controller that an upgrade to the controller will occur. The notification can be dynamically triggered by a centralized network management system. In some embodiments, the vSmart controller can run as a virtual machine (VM) and maintains a control plane connection with one or more edge routers in an overlay network. In response to the notification, a length of time of an expiry timer in which the edge router attempts to connect to the vSmart controller can be increased, and the edge router can connect to the vSmart controller once the increased length of time has passed.
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Patent Agency Ranking
公开(公告)号：US20240223397A1
公开(公告)日：2024-07-04
申请号：US18608677
申请日：2024-03-18
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Ajeet Pal Singh Gill , Srilatha Tangirala , Nithin Bangalore Raju , Ravi Kiran Chintallapudi , Pradeepan Kannawadi , Ganesh Devendrachar
Abstract: Techniques for virtualizing tenant transport interfaces configured to implement pertenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
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公开(公告)号：US11991076B1
公开(公告)日：2024-05-21
申请号：US17377607
申请日：2021-07-16
Applicant: Cisco Technology, Inc.
Inventor： Vengada Prasad Govindan , Manikandan Panchanathan , Ravi Kiran Chintallapudi , Alfred C. Lindem
Abstract: According to certain embodiments, a router comprises one or more processors and one or more computer-readable non-transitory storage media. The one or more computer-readable non-transitory storage media comprise instructions that, when executed by the one or more processors, cause one or more components of the router to perform operations comprising determining an occurrence of one or more network events associated with a multicast service, generating route exchange information associated with the multicast service locally by the router based on the one or more network events, and using the route exchange information locally to configure the router.
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公开(公告)号：US20230188607A1
公开(公告)日：2023-06-15
申请号：US17709877
申请日：2022-03-31
Applicant: Cisco Technology, Inc.
Inventor： Srilatha Tangirala , Rahul Hardikar , Sheikh Qumruzzaman , Ravi Kiran Chintallapudi , Samir Thoria , Ajeet Pal Singh Gill , Vivek Agarwal
IPC: H04L67/141 , H04L9/40
CPC classification number: H04L67/141 , H04L63/0428 , H04L45/76
Abstract: In one embodiment, a method includes onboarding, by an edge router, a first tenant from a network management system and determining, by the edge router, a mapping of a tenant identifier associated with the first tenant to a controller identifier associated with a controller. The method also includes reserving, by the edge router, a port number in a kernel for the first tenant and inserting, by the edge router, the tenant identifier into a first control packet. The method further includes communicating, by the edge router, the first control packet to the controller via an encrypted control connection during a first peering session. The first peering session shares the encrypted control connection with a second peering session.
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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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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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