公开(公告)号：US20240205160A1

公开(公告)日：2024-06-20

申请号：US18081503

申请日：2022-12-14

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Afroze Mohammad

IPC: H04L47/41 ,  H04L47/2425

CPC classification number: 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：US11881934B2

公开(公告)日：2024-01-23

申请号：US18051298

申请日：2022-10-31

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiaorong Wang ,  Shen Yong Qing ,  Olivier Patrick Jean Pelerin ,  Frederic René Philippe Detienne ,  Pritam Baruah ,  Ruchir Jain

IPC: H04L12/26 ,  H04L43/10 ,  H04L43/062

CPC classification number: H04L43/10 ,  H04L43/062

Abstract: In one embodiment, a method includes receiving, by a network orchestrator, trace parameters from a user device. The method also includes determining, by the network orchestrator, to initiate a network path trace for the application, generating, by the network orchestrator, a filter policy for the network path trace using the trace parameters, and allocating, by the network orchestrator, a trace identification to the network path trace. The method also includes initiating, by the network orchestrator, the network path trace within a network by communicating the filter policy and the trace identification to a first node of the network and receiving, by the network orchestrator, network path trace data from a plurality of nodes of the network. The method further includes generating, by the network orchestrator, a trace report for the application using the network path trace data.

公开(公告)号：US20240414094A1

公开(公告)日：2024-12-12

申请号：US18208165

申请日：2023-06-09

Applicant: Cisco Technology, Inc.

Inventor： Avinash Shah ,  Ganesh Devendrachar ,  Arul Murugan Manickam ,  Laxmikantha Reddy Ponnuru ,  Satyajit Das ,  Pritam Baruah

IPC: H04L47/36

Abstract: Techniques are described for detecting a change in Path Maximum Transfer Unit (PMTU) in a network and initiating a PMTU discovery process. A Bidirectional Forwarding Detection (BFD) data packet is generated having enhanced headers configured to record a largest packet sent value and a largest packet received value. The BFD data packet is sent from a first network device (such as a first router) to a second network device (such as a second router). A largest packet sent value and a largest packet received value are each recorded in the BFD data packet. If the largest data packet sent value is larger than the largest data packet received value, then a determination can be made that a path change has resulted in a reduction in PMTU which has resulted in either a data packet being fragmented, a data packet being dropped or both. A PMTU discovery can then be performed.

公开(公告)号：US20230344771A1

公开(公告)日：2023-10-26

申请号：US17816818

申请日：2022-08-02

Applicant: Cisco Technology, Inc.

Inventor： Arul Murugan Manickam ,  Avinash Shah ,  Laxmikantha Reddy Ponnuru ,  Satyajit Das ,  Deepa Rajendra Sangolli ,  Govindakrishnan Kannan ,  Pritam Baruah

IPC: H04L47/125 ,  H04L47/2416

CPC classification number: H04L47/125 ,  H04L47/2416

Abstract: In one embodiment, a method includes receiving traffic and identifying one or more attributes associated with the traffic. The method also includes dynamically selecting a load balancing algorithm based on the one or more attributes in accordance with a load balancing scheme. The method further includes performing load balancing on the traffic in accordance with the load balancing algorithm and communicating the traffic from a first network element to a second network element in accordance with the load balancing.

公开(公告)号：US20230112928A1

公开(公告)日：2023-04-13

申请号：US18051298

申请日：2022-10-31

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiaorong Wang ,  Shen Yong Qing ,  Olivier Patrick Jean Pelerin ,  Frederic René Philippe Detienne ,  Pritam Baruah ,  Ruchir Jain

IPC: H04L43/10 ,  H04L43/062

Abstract: In one embodiment, a method includes receiving, by a network orchestrator, trace parameters from a user device. The method also includes determining, by the network orchestrator, to initiate a network path trace for the application, generating, by the network orchestrator, a filter policy for the network path trace using the trace parameters, and allocating, by the network orchestrator, a trace identification to the network path trace. The method also includes initiating, by the network orchestrator, the network path trace within a network by communicating the filter policy and the trace identification to a first node of the network and receiving, by the network orchestrator, network path trace data from a plurality of nodes of the network. The method further includes generating, by the network orchestrator, a trace report for the application using the network path trace data.

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.

公开(公告)号：US20250071060A1

公开(公告)日：2025-02-27

申请号：US18409701

申请日：2024-01-10

Applicant: Cisco Technology, Inc.

Inventor： Steven Wood ,  Balaji Sundararajan ,  Laxmikantha Reddy Ponnuru ,  Avinash Shah ,  Pritam Baruah ,  Venkatesh Nataraj ,  Ganesh Devendrachar

IPC: H04L45/76 ,  H04L12/46

Abstract: Generally, Software-Defined Wide Area Networks (SD-WAN) generally do not support network segmentation. The concepts disclosed herein connects IPSec SD-WAN fabric to a Virtual Routing and Forwarding (VRF) router and make use of a Software Defined Cloud Interconnect (SDCI) Router to route traffic from IPSec SD-WAN to various cloud services from the SDCI Router in the fabric. The concepts disclosed herein also provides for tunnel multi-plexing that takes incoming and outgoing traffic and maps VPNs to any service VRF associated with the cloud based services.

公开(公告)号：US20240348549A1

公开(公告)日：2024-10-17

申请号：US18356853

申请日：2023-07-21

Applicant: Cisco Technology, Inc.

Inventor： Pritam Baruah ,  Amjad Inamdar ,  Laxmikantha Reddy Ponnuru ,  Samir D. Thoria

IPC: H04L47/2408 ,  H04L45/24

CPC classification number: H04L47/2408 ,  H04L45/24

Abstract: The present disclosure is directed to making service-chains routable and intent-based within an enterprise network. In one aspect, a method for simplifying steering of network traffic includes receiving an intent-based description of one or more services to be applied to the network traffic; defining a type for a service chain that includes the one or more services based on the intent-based description, the type serving as an address for the service chain for routing the network traffic to and from the one or more service included in the service chain; implementing the service chain at one or more network hubs; and implementing a traffic steering policy in the network for steering the network traffic to the one or more network hubs to be serviced by the one or more services.

公开(公告)号：US11516104B2

公开(公告)日：2022-11-29

申请号：US16988920

申请日：2020-08-10

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiaorong Wang ,  Shen Yong Qing ,  Olivier Patrick Jean Pelerin ,  Frederic René Philippe Detienne ,  Pritam Baruah ,  Ruchir Jain

IPC: H04L12/26 ,  H04L43/10 ,  H04L43/062

Abstract: In one embodiment, a method includes receiving, by a network orchestrator, trace parameters from a user device. The method also includes determining, by the network orchestrator, to initiate a network path trace for the application, generating, by the network orchestrator, a filter policy for the network path trace using the trace parameters, and allocating, by the network orchestrator, a trace identification to the network path trace. The method also includes initiating, by the network orchestrator, the network path trace within a network by communicating the filter policy and the trace identification to a first node of the network and receiving, by the network orchestrator, network path trace data from a plurality of nodes of the network. The method further includes generating, by the network orchestrator, a trace report for the application using the network path trace data.