公开(公告)号：USRE49806E1

公开(公告)日：2024-01-16

申请号：US16400117

申请日：2019-05-01

申请人： Cisco Technology, Inc.

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

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

CPC分类号： H04L43/0852 ,  H04L43/106 ,  H04L69/321

摘要： 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.

公开(公告)号：US20150236933A1

公开(公告)日：2015-08-20

申请号：US14701882

申请日：2015-05-01

申请人： Cisco Technology, Inc.

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

IPC分类号： H04L12/26 ,  H04L29/08

CPC分类号： H04L43/0852 ,  H04L43/106 ,  H04L69/321

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20150172177A1

公开(公告)日：2015-06-18

申请号：US14628880

申请日：2015-02-23

申请人： Cisco Technology, Inc.

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

IPC分类号： H04L12/721 ,  H04L12/801

CPC分类号： H04L45/38 ,  H04L45/566 ,  H04L47/12 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483

摘要： 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.

摘要翻译： 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。

公开(公告)号：US09001830B2

公开(公告)日：2015-04-07

申请号：US13708200

申请日：2012-12-07

申请人： Cisco Technology, Inc.

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

IPC分类号： H04L12/28 ,  H04L12/721 ,  H04L12/851 ,  H04L12/813

CPC分类号： H04L45/38 ,  H04L45/566 ,  H04L47/12 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483

摘要： 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.

摘要翻译： 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。

公开(公告)号：US09641409B2

公开(公告)日：2017-05-02

申请号：US14701882

申请日：2015-05-01

申请人： Cisco Technology, Inc.

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

IPC分类号： H04J3/14 ,  H04J3/24 ,  H04L12/28 ,  H04B7/212 ,  G06F15/16 ,  H04L12/26 ,  H04L29/08

CPC分类号： H04L43/0852 ,  H04L43/106 ,  H04L69/321

摘要： 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.

公开(公告)号：US09473395B2

公开(公告)日：2016-10-18

申请号：US14628880

申请日：2015-02-23

申请人： Cisco Technology, Inc.

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

IPC分类号： H04L12/721 ,  H04L12/801 ,  H04L12/851 ,  H04L12/813

CPC分类号： H04L45/38 ,  H04L45/566 ,  H04L47/12 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483

摘要： 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.

公开(公告)号：US09054967B1

公开(公告)日：2015-06-09

申请号：US13708347

申请日：2012-12-07

申请人： Cisco Technology, Inc.

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

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

CPC分类号： H04L43/0852 ,  H04L43/106 ,  H04L69/321

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20140079062A1

公开(公告)日：2014-03-20

申请号：US13708200

申请日：2012-12-07

申请人： Cisco Technology, Inc.

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

IPC分类号： H04L12/56

CPC分类号： H04L45/38 ,  H04L45/566 ,  H04L47/12 ,  H04L47/20 ,  H04L47/2441 ,  H04L47/2483

摘要： 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.

摘要翻译： 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。