公开(公告)号：US12081443B2

公开(公告)日：2024-09-03

申请号：US17381552

申请日：2021-07-21

Applicant: Cisco Technology, Inc.

Inventor： Roshan Lal ,  Rishi Chhibber ,  Anand Kumar Singh

IPC: H04W72/23 ,  H04L1/00 ,  H04L1/1867 ,  H04L5/00 ,  H04L47/2441 ,  H04L47/25 ,  H04L47/32

CPC classification number: H04L47/2441 ,  H04L47/25 ,  H04L47/32

Abstract: Techniques are described for an adaptive CoPP that can adapt and change based on actual network control traffic rather than static CoPP rates. An aggressive CoPP can protect the CPU (route processor) of a network device, e.g., routers and switches, but may also penalize convergence and performance. An adaptive CoPP may protect CPU as well as boost convergence and performance parameters. In particular, traffic between two sites may be managed by proactively changing the thresholds of lower CoS traffic based on the CoPP utilization of various protocol/BPDU class traffic, thereby improving data plane convergence and application performance in scaled environments.

公开(公告)号：US20220124017A1

公开(公告)日：2022-04-21

申请号：US17075485

申请日：2020-10-20

Applicant: Cisco Technology, Inc.

Inventor： Padmanab Pathikonda ,  Rishi Chhibber ,  Roshan Lal ,  Lakshmi Priya Sarma ,  Vinay Narayana Rai ,  Akash Garg

IPC: H04L12/26 ,  H04J3/06

Abstract: This disclosure describes methods to process timing information of flows in a network. One or more processors determine a latency associated with each of one or more packets of a flow passing through a device. The one or more processors determine that the latency is greater than a baseline latency, and the one or more processors provide a message indicating at least the flow and that the latency is greater than the baseline latency.

公开(公告)号：US20220360462A1

公开(公告)日：2022-11-10

申请号：US17307264

申请日：2021-05-04

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Roshan Lal ,  Anuj Budhiraja

IPC: H04L12/18

Abstract: The present disclosure is directed to systems and methods for logical flow aggregation for fragmented multicast flows, the methods including the steps of identifying a plurality of fragmented multicast flows that are logically related as a single flow in a multicast network; generating a plurality of multicast joins associated with the plurality of fragmented multicast flows, wherein each multicast join of the plurality of multicast joins includes a join attribute comprising a common flow identifier that identifies the plurality of fragmented multicast flows as logically related; and selecting a reverse forwarding path toward an upstream device for the plurality of multicast joins.

公开(公告)号：US10862826B2

公开(公告)日：2020-12-08

申请号：US16273496

申请日：2019-02-12

Applicant: Cisco Technology, Inc.

Inventor： Vaibhav Dhage ,  Varun Manchanda ,  Rishi Chhibber ,  Meo Francesco ,  Roshan Lal ,  Padmanab Pathikonda

IPC: G06F15/173 ,  H04L12/911 ,  H04L12/933 ,  H04L12/801 ,  H04L12/813

Abstract: In one illustrative example, a switch for use in a network fabric which includes a plurality on interconnected switches configured to facilitate communication of IP multicast traffic amongst host devices may be provided. The switch may receive, from a controller, a global set of host policies associated with the plurality of switches of the network fabric. The switch may select, from the global set of host policies, a local subset of host policies applicable to the switch. The switch may grant or deny admission of host devices to receive or send IP multicast traffic flows in the network fabric according to the selected, local subset of host policies.

公开(公告)号：US12063164B2

公开(公告)日：2024-08-13

申请号：US18177976

申请日：2023-03-03

Applicant: Cisco Technology, Inc.

Inventor： Roshan Lal ,  Rishi Chhibber ,  Padmanab Pathikonda ,  Lakshmi Priya Sarma ,  Francesco Meo

IPC: H04L47/74 ,  H04L45/00 ,  H04L45/24 ,  H04L47/76 ,  H04L47/783

CPC classification number: H04L47/745 ,  H04L45/22 ,  H04L45/245 ,  H04L47/76 ,  H04L47/783

Abstract: In one embodiment, a method includes receiving a request to establish a path for a data stream from the first network apparatus to a second network apparatus, where the request is associated with a requested bandwidth for the data stream, and where the first network apparatus and the second network apparatus are connected by a link aggregation group including a number of physical Ethernet links, accessing bandwidth information representing a number of remaining bandwidths of the respective multiple of physical Ethernet links, determining that the requested bandwidth is not satisfied by any of the number of remaining bandwidths of the number of physical Ethernet links, and sending a response rejecting the request to establish the path.

公开(公告)号：US11671270B2

公开(公告)日：2023-06-06

申请号：US17307264

申请日：2021-05-04

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Roshan Lal ,  Anuj Budhiraja

IPC: H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L65/611

CPC classification number: H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L65/611

Abstract: The present disclosure is directed to systems and methods for logical flow aggregation for fragmented multicast flows, the methods including the steps of identifying a plurality of fragmented multicast flows that are logically related as a single flow in a multicast network; generating a plurality of multicast joins associated with the plurality of fragmented multicast flows, wherein each multicast join of the plurality of multicast joins includes a join attribute comprising a common flow identifier that identifies the plurality of fragmented multicast flows as logically related; and selecting a reverse forwarding path toward an upstream device for the plurality of multicast joins.

公开(公告)号：US20230030452A1

公开(公告)日：2023-02-02

申请号：US17381552

申请日：2021-07-21

Applicant: Cisco Technology, Inc.

Inventor： Roshan Lal ,  Rishi Chhibber ,  Anand Kumar Singh

IPC: H04L12/851 ,  H04L12/823 ,  H04L12/825

Abstract: Techniques are described for an adaptive CoPP that can adapt and change based on actual network control traffic rather than static CoPP rates. An aggressive CoPP can protect the CPU (route processor) of a network device, e.g., routers and switches, but may also penalize convergence and performance. An adaptive CoPP may protect CPU as well as boost convergence and performance parameters. In particular, traffic between two sites may be managed by proactively changing the thresholds of lower CoS traffic based on the CoPP utilization of various protocol/BPDU class traffic, thereby improving data plane convergence and application performance in scaled environments.

公开(公告)号：US20220141545A1

公开(公告)日：2022-05-05

申请号：US17090191

申请日：2020-11-05

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Francesco Meo

IPC: H04N21/647 ,  H04N21/2343 ,  H04N21/24

Abstract: A network element seamlessly provides a flow of adjustable quality to a receiver endpoint. The network element obtains from the receiver endpoint a request for a media stream. The network element subscribes to multiple flows of the media stream, with each flow corresponding to a different quality level of the media stream. The network element monitors the network performance of each of the flows and selects a first flow based on the network performance of each of the flows. The network element provides the first flow to the receiver endpoint and continues to monitor the network performance of the flows.

公开(公告)号：US11153214B2

公开(公告)日：2021-10-19

申请号：US16389197

申请日：2019-04-19

Applicant: Cisco Technology, Inc.

Inventor： Padmanab Pathikonda ,  Rishi Chhibber ,  Roshan Lal ,  Varun Manchanda ,  Francesco Meo ,  Vaibhav Dhage

IPC: H04L12/801 ,  H04L12/761 ,  H04L12/927 ,  H04L12/729 ,  H04L12/923 ,  H04L12/721

Abstract: In service flow capability updating in a guaranteed bandwidth multicast network may be provided. First, a node may determine that a bandwidth requirement of a flow has changed to a new bandwidth value. Then, in response to determining that the bandwidth requirement of the flow has changed to the new bandwidth value, an ingress capacity value may be updated in an interface usage table for a Reverse Path Forwarding (RPF) interface corresponding to the flow. The RPF interface may be disposed on a network device. Next, in response to determining that the bandwidth requirement of the flow has changed to the new bandwidth value, an egress capacity value may be updated in the interface usage table for an Outgoing Interface (OIF) corresponding to the flow. The OIF may be disposed on the network device.

公开(公告)号：US20210314259A1

公开(公告)日：2021-10-07

申请号：US17347345

申请日：2021-06-14

Applicant: Cisco Technology, Inc.

Inventor： Francesco Meo ,  Stig Ingvar Venaas ,  Roshan Lal ,  Rishi Chhibber ,  Ravinder Vissapragada

IPC: H04L12/781 ,  H04L29/12 ,  H04L12/751 ,  H04L12/18 ,  H04L12/715

Abstract: Techniques for utilizing Software-Defined Networking (SDN) controllers and network border leaf nodes of respective cloud computing networks to configure a data transmission route for a multicast group. Each border leaf node may maintain a respective external sources database, including a number of records indicating associations between a multicast data source, one or more respective border leaf nodes disposed in the same network as the multicast data source, and network capability information. A border leaf node, disposed in the same network as a multicast data source, may broadcast a local source discovery message to all border leaf nodes in remote networks to which it is communicatively coupled. A border leaf node may also communicate network capability information associated with one or more remote networks to a local SDN controller. The SDN controller may utilize the network capability information to configure a data transmission route to one or more destination nodes.