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：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.

公开(公告)号：US20250106170A1

公开(公告)日：2025-03-27

申请号：US18472052

申请日：2023-09-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L47/34 ,  H04L41/14

Abstract: Disclosed are systems, apparatuses, methods, computer readable medium, and circuits for ordering services in a service chain comprising: receiving, at an edge router, one or more data packets; determining, at the edge router, a sequence order of service chain elements for the one or more data packets based upon an established sequence, the sequence order modifies the established sequence to performing an altering service that alters a payload of the one or more packets prior to one or more remaining services that inspect the one or more packets; transmitting and receiving, by the edge router in the sequence order, the one or more data packets to and from the service chain elements; transmitting, by the edge router, the one more data packets to a destination after a last of the service chain elements has been performed.

公开(公告)号：US20250106150A1

公开(公告)日：2025-03-27

申请号：US18472011

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

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.