公开(公告)号：US20210203620A1

公开(公告)日：2021-07-01

申请号：US17184337

申请日：2021-02-24

Applicant: Cisco Technology, Inc.

Inventor： Dennis Khoa Dang Nguyen ,  Sha Ma ,  Thomas J. Edsall ,  Keerthi Manjunathan Swarnamanjunathan ,  Parvin Taheri

IPC: H04L12/935 ,  H04L12/927 ,  H04L12/867 ,  H04L12/863

Abstract: A first node of a packet switched network transmits at least one flow of protocol data units of a network to at least one output context of one of a plurality of second nodes of the network. The first node includes X virtual output queues (VOQs). The first node receives, from at least one of the second nodes, at least one fair rate record. Each fair rate record corresponds to a particular second node output context and describes a recommended rate of flow to the particular output context. The first node allocates up to X of the VOQs among flows corresponding to i) currently allocated VOQs, and ii) the flows corresponding to the received fair rate records. The first node operates each allocated VOQ according to the corresponding recommended rate of flow until a deallocation condition obtains for the each allocated VOQ.

公开(公告)号：US10764027B2

公开(公告)日：2020-09-01

申请号：US15204937

申请日：2016-07-07

Applicant: Cisco Technology, Inc.

Inventor： Chih-Tsung Huang ,  Wei-Jen Huang ,  Kelvin Chan ,  Keerthi Manjunathan Swarnamanjunathan

IPC: G06F15/16 ,  H04L7/00 ,  H04J3/06 ,  H04L12/26

Abstract: Technologies for calibrated network interlink access. In some embodiments, a system can calculate a first communication latency of a first link between a first processing element in a first switch and a second processing element in a second switch, and a second communication latency associated with a second link between the first processing element and a third processing element in a third switch. The system can determine a delta between the first communication latency and the second communication latency, and whether respective clock rates of the first switch, second switch, and third switch have a clock rate variation, to yield a clock rate variation determination. Based on the delta and clock rate variation determination, the system can determine an offset value for synchronizing the first communication latency and second communication latency. Based on the offset value, the system can calibrate traffic over the first link and/or the second link.

公开(公告)号：US10680747B2

公开(公告)日：2020-06-09

申请号：US15222744

申请日：2016-07-28

Applicant: Cisco Technology, Inc.

Inventor： Keerthi Manjunathan Swarnamanjunathan ,  Chih-Tsung Huang ,  Kelvin Chan ,  Wei-Jen Huang

IPC: G06F15/173 ,  H04L1/00 ,  H04L12/24 ,  H04L29/08

Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for monitoring application health via correctable errors. The method includes identifying, by a network device, a network packet associated with an application running on a node, detecting, by the network device, a correctable error associated with the network packet, and encoding, by the network device, a tag within the network packet, the tag including one or more fields for storing data associated with the correctable error.

公开(公告)号：US10547412B2

公开(公告)日：2020-01-28

申请号：US15198085

申请日：2016-06-30

Applicant: Cisco Technology, Inc.

Inventor： Keerthi Manjunathan Swarnamanjunathan ,  Chih-Tsung Huang ,  Kelvin Chan ,  Wei-Jen Huang

IPC: G06F15/173 ,  H04L1/00 ,  H04L12/24 ,  H04L29/08

Abstract: Disclosed are systems, methods, and non-transitory computer-readable storage media for monitoring application health via correctable errors. The method includes identifying, by a network device, a network packet associated with an application and detecting an error associated with the network packet. In response to detecting the error, the network device increments a counter associated with the application, determines an application score based at least in part on the counter, and telemeters the application score to a controller. The controller can generate a graphical interface based at least in part on the application score and a timestamp associated with the application score, wherein the graphical interface depicts a trend in correctable errors experienced by the application over a network.

公开(公告)号：US10541866B2

公开(公告)日：2020-01-21

申请号：US15658945

申请日：2017-07-25

Applicant: Cisco Technology, Inc.

Inventor： Laura Sharpless ,  Ramanan Vaidyanathan ,  Keerthi Manjunathan Swarnamanjunathan

IPC: H04L12/24 ,  H04L12/18 ,  H04L12/947 ,  H04L12/26

Abstract: The subject disclosure relates to systems and methods for improving multicast traffic flows in a computer network. In some aspects, a method of the technology includes steps for receiving multicast traffic statistics from each of a plurality of switches in a computer network, aggregating the multicast traffic statistics into a time-series database, and identifying a low-performing multicast flow based on the time-series database. In some aspects, the method can include steps for automatically reconfiguring the computer network to improve the low-performing multicast flow. Systems and machine readable media are also provided.