公开(公告)号：US20250150405A1

公开(公告)日：2025-05-08

申请号：US19015322

申请日：2025-01-09

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Afroze Mohammad

IPC: H04L47/41 ,  H04L47/2425

Abstract: Techniques are described for providing service level agreement performance in a link aggregation group computer networking environment. A performance measurement data packet such as a bi-directional forwarding detection (BFD) packet is received. The performance measuring data packet can be considered a parent performance measurement data packet is split into multiple child performance measurement data packets which are each different constituent links of a link aggregation database. The performance of each constituent is tested to determine which constituents satisfy service level agreement parameters. Data packets can then be sent to constituents that meet the data packet's service level agreement performance parameters while still allowing link aggregation grouping.

公开(公告)号：US20250141796A1

公开(公告)日：2025-05-01

申请号：US18498928

申请日：2023-10-31

Applicant: Cisco Technology, Inc.

Inventor： Satish Kumar Mahadevan ,  Laxmikantha Reddy Ponnuru ,  Pritam Baruah ,  Sourav Sen ,  Samir Thoria ,  Ramakumara Kariyappa

IPC: H04L45/586 ,  H04L45/12 ,  H04L45/28

Abstract: Present disclosure includes determining, at two or more gateway nodes that each communicate with a plurality of branch nodes and a plurality of resources, dynamically a path between each of the plurality of branch nodes and each of the plurality of resources, wherein the path includes one or more virtual routers; generating, at the two or more gateways, dynamically a path length based upon a number of virtual routers each path traverses; automatically translating the path length to an overlay management protocol route preference for each of the plurality of resources.

公开(公告)号：US20230261963A1

公开(公告)日：2023-08-17

申请号：US17846647

申请日：2022-06-22

Applicant: Cisco Technology, Inc.

Inventor： Anubhav Gupta ,  Pritam Baruah ,  Laxmikantha Reddy Ponnuru ,  Sireesha Yeruva

IPC: H04L45/02 ,  H04L45/00 ,  H04L43/12

CPC classification number: H04L45/02 ,  H04L45/20 ,  H04L43/12

Abstract: The subject matter of this disclosure relates in general to the field of computer networking, and more particularly, to systems and methods for discovery of a tunnel for wide area network. Certain aspects provide a method for network path analysis. The method includes sending a first probe packet configured to identify a network tunnel, wherein the first probe packet includes an identifier of the first probe packet and a first time to live (TTL) value that corresponds to a first network hop; receiving a first response message from the first network hop in the network tunnel, wherein the first response message corresponds to the first probe packet and includes the identifier of the first probe packet; and analyzing the network tunnel based on the first response message including the identifier of the first probe packet.

公开(公告)号：US11343180B2

公开(公告)日：2022-05-24

申请号：US17091478

申请日：2020-11-06

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Gaurav Shrivastava

IPC: H04L45/64 ,  H04L45/30 ,  H04L12/46 ,  H04L29/06

Abstract: The present technology discloses methods, systems, and non-transitory computer-readable media for defining, for a network primitive in a network domain, whether the network primitive can receive data carrying an assigned context associated from one or more source nodes through a software-defined wide area network (SDWAN) fabric overlay; advertising a capability of the network primitive, the capability stating whether the network primitive can receive the data carrying the assigned context; and controlling selective transmission of the data carrying the assigned context from the one or more source nodes to the network primitive through the SDWAN fabric overlay based on the capability of the network primitive to receive the data carrying the assigned context.

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：US20250106149A1

公开(公告)日：2025-03-27

申请号：US18471931

申请日：2023-09-21

Applicant: Cisco Technology, Inc.

Inventor： Avinash Shah ,  Pritam Baruah ,  Amjad Inamdar ,  Laxmikantha Reddy Ponnuru ,  Latika Ahuja ,  Jai Prakash Agrawal

IPC: H04L45/00 ,  H04L9/40 ,  H04L45/745

Abstract: A system facilitates communication between branches of an SD-WAN and a service chain element. A hub node receives a data packet of a flow from a source branch over a VPN segment to be transmitted to a destination branch, extracts flow information from the data packet including VPN segment information to be stored in a flow table before transmitting the data packet to the service chain element over a service chain VPN. Upon return of the data packet from the service chain element, the hub node uses packet tuple information to retrieve the flow information with VPN segment information from the flow table. The hub node can then forward the data packet to the destination branch over the VPN segment. The hub node can generate and store an Auto Service Chaining Key that connects bidirectional flows so that the hub node can apply service-chaining to bidirectional traffic.

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：US12231345B2

公开(公告)日：2025-02-18

申请号：US18081503

申请日：2022-12-14

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Afroze Mohammad

IPC: H04L12/24 ,  H04L41/12 ,  H04L47/2425 ,  H04L47/41

Abstract: Techniques are described for providing service level agreement performance in a link aggregation group computer networking environment. A performance measurement data packet such as a bi-directional forwarding detection (BFD) packet is received. The performance measuring data packet can be considered a parent performance measurement data packet is split into multiple child performance measurement data packets which are each different constituent links of a link aggregation database. The performance of each constituent is tested to determine which constituents satisfy service level agreement parameters. Data packets can then be sent to constituents that meet the data packet's service level agreement performance parameters while still allowing link aggregation grouping.

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：US20240348536A1

公开(公告)日：2024-10-17

申请号：US18348065

申请日：2023-07-06

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Amjad Inamdar ,  Laxmikantha Reddy Ponnuru ,  Avinash Shah ,  Jai Prakash Agrawal

IPC: H04L45/247 ,  H04L45/28

CPC classification number: H04L45/247 ,  H04L45/28

Abstract: One or more aspects of the present disclosure are directed to providing a single hierarchical construct for defining requirements (connectivity parameters) of a service in a service chain. In one aspect, a single construct for identifying a service in a service chain includes a first object identifying at least one path for accessing an instance of the service within a communication network, a second object identifying a respective communication protocol for the at least one path; and a third object identifying at least a transmission specification for the respective communication protocol in the second object, wherein the second object and the third object are embedded within the first object.