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公开(公告)号：US20190386912A1
公开(公告)日：2019-12-19
申请号：US16011302
申请日：2018-06-18
Applicant: Cisco Technology, Inc.
Inventor： Chih-Tsung Huang , Wei-Jen Huang
IPC: H04L12/703 , H04L12/707 , H04L12/26
Abstract: The present technology is directed to a system and method for application aware management and recovery of link failures resulting from excessive errors observed on the link. One aspect of the proposed technology is based on identification of link errors associated with application-specific data patterns traversing link. Other aspects involve corrective actions based on relocation or modification of specific application traffic to thereby alleviate the observed excessive link errors and prevent a link failure or shut down. Relocation may involve moving the source application to a different virtual machine/container/physical device or rerouting application traffic by updating relevant routing protocols. Modification may involve harmlessly changing payload data pattern to remove data-pattern dependent signal attenuation. Information corresponding to identified faulty payload data patterns and associated frame data quality parameters maybe stored and utilized to provide analytics evaluation of network wide physical resource issues that maybe affecting application traffic.
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公开(公告)号：US20180139066A1
公开(公告)日：2018-05-17
申请号：US15349629
申请日：2016-11-11
Applicant: Cisco Technology, Inc.
Inventor： Dennis Khoa Dang Nguyen , Chih-Tsung Huang
IPC: H04L12/18 , H04L12/801 , H04L12/879 , H04L12/841
CPC classification number: H04L12/1886 , H04L47/125 , H04L47/283 , H04L47/34 , H04L49/201 , H04L49/901
Abstract: Exemplified systems and methods facilitate multicasting latency optimization operations for router, switches, and other network devices, for routed Layer-3 multicast packets to provide even distribution latency and/or selective prioritized distribution of latency among multicast destinations. A list of network destinations for serially-replicated packets is traversed in different sequences from one packet to the next, to provide delay fairness among the listed destinations. The list of network destinations are mapped to physical network ports, virtual ports, or logical ports of the router, switches, or other network devices and, thus, the different sequences are also traversed from these physical network ports, virtual ports, or logical ports. The exemplified systems and methods facilitates the management of traffic that is particularly beneficial in in a data center.
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公开(公告)号：US20180006918A1
公开(公告)日：2018-01-04
申请号：US15222744
申请日：2016-07-28
Applicant: Cisco Technology, Inc.
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.
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公开(公告)号：US09641457B2
公开(公告)日：2017-05-02
申请号：US14702186
申请日：2015-05-01
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Putu Harry Subagio , Alessandro Fulli , Christopher A. Wildman , Mingzhe Li , Wei-Jen Huang , Chih-Tsung Huang
IPC: H04L12/28 , H04L12/947 , H04L29/06 , H04L12/26 , H04L12/861 , H04L12/741
CPC classification number: H04L49/25 , H04L29/0653 , H04L43/04 , H04L45/74 , H04L45/745 , H04L47/12 , H04L47/70 , H04L49/251 , H04L49/253 , H04L49/3009 , H04L49/3063 , H04L49/355 , H04L49/9057 , H04L69/22
Abstract: A network device receives a packet that includes a plurality of sets of fields. Sets of fields of the packet are parsed and the field sets are evaluated as soon as they are available to determine whether a processing decision can be made on the packet. Additional field sets may be parsed from the packet and obtained in parallel with determining whether a processing decision can be made, but once it is determined that a processing decision can be made, the evaluating of field sets is terminated such that any further field sets of the packet are ignored for purposes of making a processing decision for the packet.
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公开(公告)号：US09614766B2
公开(公告)日：2017-04-04
申请号：US14571493
申请日：2014-12-16
Applicant: Cisco Technology, Inc.
Inventor： Haoxiang Zhao , Chih-Tsung Huang , Wei-Jen Huang , Vuong Tran
IPC: H04L12/28 , H04L12/801 , H04L12/26
CPC classification number: H04L47/11 , H04L43/028 , H04L43/04 , H04L43/062 , H04L43/0852 , H04L43/0894 , H04L43/12 , H04L47/245 , H04L47/28
Abstract: Intelligent packet analysis may be provided to determine congestion problems and lead to fast solutions in low latency networks. Specifically, a congestion analyzer system may allow a user to monitor congestion on a network while using lightweight storage. A sniffer tool may be employed to capture all packets and store associated packet information into a database.
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Patent Agency Ranking
公开(公告)号：US20160380859A1
公开(公告)日：2016-12-29
申请号：US15259594
申请日：2016-09-08
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Wei-Jen Huang , Chih-Tsung Huang , Kelvin Chan
IPC: H04L12/26
CPC classification number: H04L43/0858 , H04L43/028 , H04L43/062 , H04L43/106
Abstract: Presented herein are techniques to measure latency associated with packets that are processed within a network device. A packet is received at a component of a network device comprising one or more components. A timestamp representing a time of arrival of the packet at a first point in the network device is associated with the packet. The timestamp is generated with respect to a clock of the network device. A latency value for the packet is computed based on at least one of the timestamp and current time of arrival at a second point in the network device. One or more latency statistics are updated based on the latency value.
Abstract translation: 这里提出的是测量与在网络设备内处理的分组相关联的延迟的技术。 在包括一个或多个组件的网络设备的组件处接收分组。 表示分组在网络设备中的第一点的到达时间的时间戳与分组相关联。 相对于网络设备的时钟生成时间戳。 基于网络设备中的第二点的到达时间戳和当前时间中的至少一个来计算分组的等待时间值。 基于延迟值更新一个或多个延迟统计信息。
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公开(公告)号：US09515900B2
公开(公告)日：2016-12-06
申请号：US14723748
申请日：2015-05-28
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Wei-Jen Huang , Chih-Tsung Huang , Kelvin Chan
CPC classification number: H04L43/0858 , H04L43/028 , H04L43/062 , H04L43/106
Abstract: Presented herein are techniques to measure latency associated with packets that are processed within a network device. A packet is received at a component of a network device comprising one or more components. A timestamp representing a time of arrival of the packet at a first point in the network device is associated with the packet. The timestamp is generated with respect to a clock of the network device. A latency value for the packet is computed based on at least one of the timestamp and current time of arrival at a second point in the network device. One or more latency statistics are updated based on the latency value.
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公开(公告)号：US09397918B2
公开(公告)日：2016-07-19
申请号：US14691745
申请日：2015-04-21
Applicant: Cisco Technology, Inc.
IPC: H04L12/26 , H04L12/801 , G06F13/38 , H04L12/835 , H04L12/861
CPC classification number: H04L43/0882 , G06F13/385 , G06F2213/3808 , H04L43/045 , H04L43/16 , H04L47/12 , H04L47/29 , H04L47/30 , H04L49/90 , H04L49/9005
Abstract: Presented herein are techniques for detection and characterization of buffer occupancy of a buffer in a network device. Packets are received at a network device. The packets are stored in a buffer of the network device as they are processed by the network device. An occupancy level of the buffer is sampled at a sampling rate. Occupancy levels of the buffer over time are determined from the sampling, and traffic flow through the network device is characterized based on the occupancy levels.
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公开(公告)号：US20160173354A1
公开(公告)日：2016-06-16
申请号：US14571493
申请日：2014-12-16
Applicant: Cisco Technology, Inc.
Inventor： Haoxiang Zhao , Chih-Tsung Huang , Wei-Jen Huang , Vuong Tran
IPC: H04L12/26 , H04L12/801
CPC classification number: H04L47/11 , H04L43/028 , H04L43/04 , H04L43/062 , H04L43/0852 , H04L43/0894 , H04L43/12 , H04L47/245 , H04L47/28
Abstract: Intelligent packet analysis may be provided to determine congestion problems and lead to fast solutions in low latency networks. Specifically, a congestion analyzer system may allow a user to monitor congestion on a network while using lightweight storage. A sniffer tool may be employed to capture all packets and store associated packet information into a database.
Abstract translation: 可以提供智能分组分析以确定拥塞问题并导致低延迟网络中的快速解决方案。 具体地，拥塞分析器系统可以允许用户在使用轻量级存储的同时监视网络上的拥塞。 可以使用嗅探器工具来捕获所有分组并将相关联的分组信息存储到数据库中。
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公开(公告)号：US20150263922A1
公开(公告)日：2015-09-17
申请号：US14723748
申请日：2015-05-28
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Wei-Jen Huang , Chih-Tsung Huang , Kelvin Chan
IPC: H04L12/26
CPC classification number: H04L43/0858 , H04L43/028 , H04L43/062 , H04L43/106
Abstract: Presented herein are techniques to measure latency associated with packets that are processed within a network device. A packet is received at a component of a network device comprising one or more components. A timestamp representing a time of arrival of the packet at a first point in the network device is associated with the packet. The timestamp is generated with respect to a clock of the network device. A latency value for the packet is computed based on at least one of the timestamp and current time of arrival at a second point in the network device. One or more latency statistics are updated based on the latency value.
Abstract translation: 这里提出的是测量与在网络设备内处理的分组相关联的延迟的技术。 在包括一个或多个组件的网络设备的组件处接收分组。 表示分组在网络设备中的第一点的到达时间的时间戳与分组相关联。 相对于网络设备的时钟生成时间戳。 基于网络设备中的第二点的到达时间戳和当前时间中的至少一个来计算分组的等待时间值。 基于延迟值更新一个或多个延迟统计信息。
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