公开(公告)号：US20200259764A1

公开(公告)日：2020-08-13

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: H04L12/911 ,  H04L12/933 ,  H04L12/813 ,  H04L12/801

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：US10700938B2

公开(公告)日：2020-06-30

申请号：US16050049

申请日：2018-07-31

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Padmanab Pathikonda

IPC: H04L12/26 ,  H04L12/24 ,  G06F9/54 ,  H04L12/751 ,  H04L12/18

Abstract: In one example embodiment, a network node of a plurality of network nodes in a multicast path is configured to provide a multicast flow from a source of the multicast flow to a receiver of the multicast flow. The network node obtains, from the receiver in a reverse direction of the multicast path, configuration instructions specifying a configuration of the multicast flow. The network node implements the configuration of the multicast flow in accordance with the configuration instructions, and provides the configuration instructions toward the source in the reverse direction of the multicast path.

公开(公告)号：US11916770B2

公开(公告)日：2024-02-27

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: H04L43/087 ,  H04J3/06 ,  H04L43/065

CPC classification number: H04L43/087 ,  H04J3/0661 ,  H04L43/065

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：US11627096B2

公开(公告)日：2023-04-11

申请号：US16431649

申请日：2019-06-04

Applicant: Cisco Technology, Inc.

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

IPC: H04L47/74 ,  H04L45/24 ,  H04L47/76 ,  H04L45/00 ,  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 links, accessing bandwidth information representing a number of remaining bandwidths of the respective multiple of physical links, determining that the requested bandwidth is not satisfied by any of the number of remaining bandwidths of the number of physical links, and sending a response rejecting the request to establish the path.

公开(公告)号：US20220337441A1

公开(公告)日：2022-10-20

申请号：US17232848

申请日：2021-04-16

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Padmanab Pathikonda ,  Francesco Meo ,  Ramakrishnan Chokkanathapuram Sundaram

IPC: H04L12/18 ,  H04L12/707

Abstract: This disclosure describes techniques for improved multicast network telemetry implemented over multilayer switches in a PIM domain. The multilayer switches may be configured to collectively certify end-to-end flow provisioning, and to publish telemetry data certifying flow provisioning from a single notifier to an external controller host. Computational workload and network traffic for streaming data related to certifying path provisioning is kept to a minimum for each flow that needs to be certified, which also keeps compounding of network traffic for many different flows to a minimum. Moreover, since controller hosts are notified upon successful provisioning but not at other times, controller hosts can trust that the telemetric data is minimally latent, and may be relied upon to enact timely actions which produce desired outcomes.

公开(公告)号：US20200336429A1

公开(公告)日：2020-10-22

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 ,  H04L12/721 ,  H04L12/729 ,  H04L12/923 ,  H04L12/927

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：US20200044929A1

公开(公告)日：2020-02-06

申请号：US16050049

申请日：2018-07-31

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Padmanab Pathikonda

IPC: H04L12/24 ,  H04L12/18 ,  H04L12/751 ,  G06F9/54

Abstract: In one example embodiment, a network node of a plurality of network nodes in a multicast path is configured to provide a multicast flow from a source of the multicast flow to a receiver of the multicast flow. The network node obtains, from the receiver in a reverse direction of the multicast path, configuration instructions specifying a configuration of the multicast flow. The network node implements the configuration of the multicast flow in accordance with the configuration instructions, and provides the configuration instructions toward the source in the reverse direction of the multicast path.