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    Timestamping packets in a network
    61.
    发明授权
    Timestamping packets in a network 有权
    在网络中时间戳数据包

    公开(公告)号：US09054967B1

    公开(公告)日：2015-06-09

    申请号：US13708347

    申请日：2012-12-07

    Applicant: Cisco Technology, Inc.

    Inventor： Thomas J. Edsall ,  Wei-Jen Huang ,  Chih-Tsung Huang ,  Yichou Lin

    IPC: H04J3/14 ,  H04L12/28 ,  H04B7/212 ,  H04L12/16 ,  G06F15/16 ,  H04L12/26

    CPC classification number: H04L43/0852 ,  H04L43/106 ,  H04L69/321

    Abstract: Techniques are presented herein to facilitate latency measurements in a networking environment. A first network device receives a packet for transport within a network domain that comprises a plurality of network devices. The plurality of network devices have a common time reference, that is, they are time synchronized. The first network device generates timestamp information indicating time of arrival of the packet at the first network device. The first network device inserts into the packet a tag that comprises at least a first subfield and a second subfield. The first subfield comprising a type indicator to signify to other network devices in the network domain that the tag includes timestamp information, and the second subfield includes the timestamp information. The first network device sends the packet from to into the network domain to another network device. Other network devices which receive that packet can make latency measurements.

    Abstract translation: 本文介绍了技术来促进网络环境中的延迟测量。 第一网络设备在包括多个网络设备的网络域内接收用于传输的分组。 多个网络设备具有公共时间参考，即它们是时间同步的。 第一网络设备生成指示在第一网络设备处的分组到达时间的时间戳信息。 第一网络设备将包括至少第一子字段和第二子字段的标签插入包中。 所述第一子字段包括类型指示符以表示所述网络域中的其他网络设备，所述标签包括时间戳信息，并且所述第二子字段包括所述时间戳信息。 第一个网络设备将数据包从网络域发送到另一个网络设备。 接收该数据包的其他网络设备可以进行延迟测量。

    Ultra Low Latency Multi-Protocol Network Device
    63.
    发明申请
    Ultra Low Latency Multi-Protocol Network Device 有权
    超低延迟多协议网络设备

    公开(公告)号：US20140079062A1

    公开(公告)日：2014-03-20

    申请号：US13708200

    申请日：2012-12-07

    Applicant: Cisco Technology, Inc.

    Inventor： Thomas J. Edsall ,  Alessandro Fulli ,  Putu Harry Subagio ,  Mingzhe Li ,  Christopher A. Wildman ,  Yichou Lin ,  Chih-Tsung Huang

    IPC: H04L12/56

    CPC classification number: H04L45/38 ,  H04L45/566 ,  H04L47/12 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483

    Abstract: Presented herein are techniques to achieve ultra low latency determination of processing decisions for packets in a network device. A packet is received at a port of a network device. A processing decision is determined in a first processing decision path based on content of the packet and one or more network policies. A processing decision is determined in a second processing decision path, in parallel with the first processing path, by accessing a table storing processing decisions. The second processing decision path can output a processing decision faster than the first processing decision path for packets that match one or more particular packet flow parameters contained in the table. A processing decision determined by the second processing decision path, if one can be made, is used, and otherwise a processing decision determined by the first processing decision path is used.

    Abstract translation: 这里提出的技术是实现超低等待时间确定网络设备中的分组的处理决策。 在网络设备的端口处接收分组。 基于分组的内容和一个或多个网络策略在第一处理决策路径中确定处理决定。 通过访问存储处理决定的表，在与第一处理路径并行的第二处理决定路径中确定处理决定。 第二处理决策路径可以比与表中包含的一个或多个特定分组流参数匹配的分组的第一处理决策路径更快地输出处理决策。 如果使用由第二处理决定路径确定的处理决定，则使用由第一处理判定路径确定的处理决定。

    Timestamping packets in a network
    67.
    再颁专利
    Timestamping packets in a network 有权

    公开(公告)号：USRE49806E1

    公开(公告)日：2024-01-16

    申请号：US16400117

    申请日：2019-05-01

    Applicant: Cisco Technology, Inc.

    Inventor： Thomas J. Edsall ,  Wei-Jen Huang ,  Chih-Tsung Huang ,  Yichou Lin

    IPC: H04J3/14 ,  H04J3/24 ,  G06F15/16 ,  H04L29/08 ,  H04L12/26 ,  H04B7/212 ,  H04L12/28 ,  H04L43/0852 ,  H04L43/106 ,  H04L69/321

    CPC classification number: H04L43/0852 ,  H04L43/106 ,  H04L69/321

    Abstract: Techniques are presented herein to facilitate latency measurements in a networking environment. A first network device receives a packet for transport within a network domain that comprises a plurality of network devices. The plurality of network devices have a common time reference, that is, they are time synchronized. The first network device generates timestamp information indicating time of arrival of the packet at the first network device. The first network device inserts into the packet a tag that comprises at least a first subfield and a second subfield. The first subfield comprising a type indicator to signify to other network devices in the network domain that the tag includes timestamp information, and the second subfield includes the timestamp information. The first network device sends the packet from to into the network domain to another network device. Other network devices which receive that packet can make latency measurements.

    SYSTEM AND METHOD TO MEASURE AND SCORE APPLICATION HEALTH VIA CORRECTABLE ERRORS
    69.
    发明申请
    SYSTEM AND METHOD TO MEASURE AND SCORE APPLICATION HEALTH VIA CORRECTABLE ERRORS 有权

    公开(公告)号：US20210344444A1

    公开(公告)日：2021-11-04

    申请号：US17378774

    申请日：2021-07-19

    Applicant: Cisco Technology, Inc.

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

    IPC: 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.

    MULTI-DESTINATION PACKET REDACTION
    70.
    发明申请
    MULTI-DESTINATION PACKET REDACTION 有权

    公开(公告)号：US20210160196A1

    公开(公告)日：2021-05-27

    申请号：US17164289

    申请日：2021-02-01

    Applicant: Cisco Technology, Inc.

    Inventor： Chih-Tsung Huang ,  Wei-Jen Huang ,  Kelvin Chan ,  Chiapeng Wu

    IPC: H04L12/939 ,  G06F21/62 ,  H04L29/06 ,  H04L12/931

    Abstract: Presented herein are techniques for redacting mirrored network packets prior to providing the mirrored packets to an intended recipient application, such as a third-party analysis application. More specifically, a multi-destination packet redaction device obtains mirrored network traffic that comprises one or more mirrored network packets. The multi-destination packet redaction device filters the mirrored network traffic to determine an intended recipient application of the one or more mirrored network packets and applies a redaction process to redact one or more portions of at least one of the one or more mirrored network packets. The redaction process is customized based on one or more attributes of the intended recipient application.

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