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公开(公告)号：US20240146565A1
公开(公告)日：2024-05-02
申请号：US17979255
申请日：2022-11-02
Applicant: Cisco Technology, Inc.
Inventor： Ajeet Pal Singh Gill , Balaji Sundararajan , Srilatha Tangirala , Nithin Bangalore Raju , Ravi Kiran Chintallapudi , Pradeepan Kannawadi , Ganesh Devendrachar
Abstract: Techniques for virtualizing tenant transport interfaces configured to implement per-tenant 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：US20240015225A1
公开(公告)日：2024-01-11
申请号：US18473422
申请日：2023-09-25
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 , H04L12/46 , H04L9/40
CPC classification number: H04L67/141 , H04L12/4641 , H04L63/0428 , H04L63/166
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：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：US20250016236A1
公开(公告)日：2025-01-09
申请号：US18894144
申请日：2024-09-24
Applicant: Cisco Technology, Inc.
Inventor： Prosenjit Sarkar , Satish Kumar Mahadevan , Ravi Kiran Chintallapudi , Mahendra Kumar Samarya
IPC: 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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公开(公告)号：US11962429B1
公开(公告)日：2024-04-16
申请号：US17979255
申请日：2022-11-02
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Srilatha Tangirala , Ajeet Pal Singh Gill , Nithin Bangalore Raju , Ravi Kiran Chintallapudi , Pradeepan Kannawadi , Ganesh Devendrachar
Abstract: Techniques for virtualizing tenant transport interfaces configured to implement per-tenant 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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Patent Agency Ranking
公开(公告)号：US11778038B2
公开(公告)日：2023-10-03
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 , H04L45/76 , H04L41/122
CPC classification number: H04L67/141 , H04L41/122 , H04L45/76 , H04L63/0428
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：US11689449B2
公开(公告)日：2023-06-27
申请号：US17307725
申请日：2021-05-04
Applicant: Cisco Technology, Inc.
Inventor： Vengada Prasad Govindan , Aswin Kuppusami , Manikandan Panchanathan , Ravi Kiran Chintallapudi
IPC: H04L45/28 , H04L41/0668 , H04L12/18 , H04L45/16
CPC classification number: H04L45/28 , H04L12/18 , H04L41/0668 , H04L45/16
Abstract: According to certain embodiments, a system comprises one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations. The operations comprise selecting a primary node to replicate multicast traffic and forward the multicast traffic to a plurality of receivers, selecting one or more secondary nodes to provide node-level redundancy for the primary node, and providing the one or more secondary nodes with synchronization information that enables the one or more secondary nodes to replicate the multicast traffic and forward the multicast traffic to the plurality of receivers in response to the primary node becoming unavailable. Selecting the primary node is based in software.
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公开(公告)号：US12184736B2
公开(公告)日：2024-12-31
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
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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公开(公告)号：US12126461B2
公开(公告)日：2024-10-22
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
CPC classification number: H04L12/185 , H04L12/1886 , 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：US20220360522A1
公开(公告)日：2022-11-10
申请号：US17307725
申请日：2021-05-04
Applicant: Cisco Technology, Inc.
Inventor： Vengada Prasad Govindan , Aswin Kuppusami , Manikandan Panchanathan , Ravi Kiran Chintallapudi
IPC: H04L12/703 , H04L12/24 , H04L12/761 , H04L12/18
Abstract: According to certain embodiments, a system comprises one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations. The operations comprise selecting a primary node to replicate multicast traffic and forward the multicast traffic to a plurality of receivers, selecting one or more secondary nodes to provide node-level redundancy for the primary node, and providing the one or more secondary nodes with synchronization information that enables the one or more secondary nodes to replicate the multicast traffic and forward the multicast traffic to the plurality of receivers in response to the primary node becoming unavailable. Selecting the primary node is based in software.
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