公开(公告)号：US20230052974A1

公开(公告)日：2023-02-16

申请号：US17586204

申请日：2022-01-27

Applicant: Cisco Technology, Inc.

Inventor： Samir Thoria ,  Vivek Agarwal ,  Satish Kumar Mahadevan ,  Laxmikantha Reddy Ponnuru ,  Jean-Marc Barozet ,  Hamzah Kardame

IPC: H04L45/64 ,  H04L9/40

Abstract: According to some embodiments, a software defined wide area network (SD-WAN) includes a first region and a second region. The first region includes multiple first routing controllers and multiple first SD-WAN edge routers. The second region includes multiple second routing controllers and multiple second SD-WAN edge routers. Each first SD-WAN edge router of the first region is configured to establish Overlay Management Protocol (OMP) peering connections with the plurality of first routing controllers of the first region but to avoid establishing OMP peering connections with the plurality of second routing controllers of the second region. Each second SD-WAN edge router of the second region is configured to establish OMP peering connections with the plurality of second routing controllers of the second region but to avoid establishing OMP peering connections with the plurality of first routing controllers of the first region.

公开(公告)号：US20250126045A1

公开(公告)日：2025-04-17

申请号：US18485110

申请日：2023-10-11

Applicant: Cisco Technology, Inc.

Inventor： Balaji Sundararajan ,  Michael Moskal ,  Satish Kumar Mahadevan ,  Vivek Agarwal ,  Pradeep Kanavihalli Subramanyasetty ,  Prabahar Radhakrishnan ,  Samir Thoria ,  Pritam Baruah ,  Samantha Misra ,  Shailendra Vinod Pardeshi

IPC: H04L45/02 ,  H04L45/122

Abstract: A process can include determining affinity information indicative of route preferences between branch routers and gateway routers. A prefix can be determined for a subnet of branch routers located at a same branch location. An affinity position of a first gateway router can be determined based on affinity information of the branch routers in the subnet. A mapping can be determined between a local preference Border Gateway Protocol (BGP) community attribute and the affinity position of the first gateway router, wherein a mapped local preference BGP community attribute and the affinity position are indicative of a same routing preference. The mapped local preference BGP community attribute can be attached to routes from the first gateway router into a cloud service provider. Affinity-based route preferences are indicated to the cloud service provider by redistributing the routes from the first gateway router with the mapped local preference BGP community attribute attached.

公开(公告)号：US12261919B2

公开(公告)日：2025-03-25

申请号：US18328300

申请日：2023-06-02

Applicant: Cisco Technology, Inc.

Inventor： Satish Kumar Mahadevan ,  Laxmikantha Reddy Ponnuru ,  Pritam Baruah

IPC: H04L67/51 ,  H04L45/02 ,  H04L45/12 ,  H04L45/302

Abstract: Techniques for enabling service insertion using dynamic service path selection are described herein. In some aspects, the techniques described herein relate to avoiding a service route that passes through a service router when the second-leg path from the service router to a destination router is unreachable. In some cases, the techniques described herein relate to avoiding a route that includes a service router that does not have a path to a viable target in a core service region.

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.

公开(公告)号：US20240406276A1

公开(公告)日：2024-12-05

申请号：US18328300

申请日：2023-06-02

Applicant: Cisco Technology, Inc.

Inventor： Satish Kumar Mahadevan ,  Laxmikantha Reddy Ponnuru ,  Pritam Baruah

IPC: H04L45/12 ,  H04L45/02 ,  H04L45/302 ,  H04L67/51

Abstract: Techniques for enabling service insertion using dynamic service path selection are described herein. In some aspects, the techniques described herein relate to avoiding a service route that passes through a service router when the second-leg path from the service router to a destination router is unreachable. In some cases, the techniques described herein relate to avoiding a route that includes a service router that does not have a path to a viable target in a core service region.

公开(公告)号：US12095652B1

公开(公告)日：2024-09-17

申请号：US18328566

申请日：2023-06-02

Applicant: Cisco Technology, Inc.

Inventor： Balaji Sundararajan ,  Satish Kumar Mahadevan ,  Ramakumara Kariyappa ,  Ganesh Devendrachar ,  Arul Murugan Manickam ,  Samir D Thoria ,  Pritam Baruah ,  Deepa Rajendra Sangolli ,  Avinash Shah

IPC: H04L45/17 ,  H04L43/0817 ,  H04L45/24

CPC classification number: H04L45/17 ,  H04L43/0817 ,  H04L45/24

Abstract: Techniques are described for suppressing data plane traffic using a service monitoring policy for data plane control. If a service provided to a router becomes nonfunctional, preventing the router from being able to forward traffic to a next-hop device, data plane traffic from client devices on the data plane that requires the use of the nonfunctioning service is suppressed. Additionally, new communication pathways to the router that will use the nonfunctioning service are prevented from being established. Traffic is redirected to another router with a functioning service. Thus, traffic that may normally be directed to the router with the nonfunctioning service and not able to be forwarded (e.g., blackholing of data) can be forwarded to the other router.