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公开(公告)号：US10361973B2
公开(公告)日：2019-07-23
申请号：US15623510
申请日：2017-06-15
Applicant: Cisco Technology, Inc.
Inventor： Chih-Tsung Huang , Wei-Jen Huang , Kelvin Chan , Chiapeng Wu
IPC: H04L12/939 , H04L12/931 , G06F21/62 , H04L29/06 , H04L12/801
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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公开(公告)号：US10182011B2
公开(公告)日：2019-01-15
申请号：US15444508
申请日：2017-02-28
Applicant: Cisco Technology, Inc.
Inventor： Haoxiang Zhao , Chih-Tsung Huang , Wei-Jen Huang , Vuong Tran
IPC: H04L12/26 , H04L12/801 , H04L12/851 , H04L12/841
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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公开(公告)号：US20180367472A1
公开(公告)日：2018-12-20
申请号：US15623510
申请日：2017-06-15
Applicant: Cisco Technology, Inc.
Inventor： Chih-Tsung Huang , Wei-Jen Huang , Kelvin Chan , Chiapeng Wu
IPC: H04L12/939 , H04L12/931
CPC classification number: H04L49/552 , G06F21/6254 , H04L47/34 , H04L49/201 , H04L63/04 , H04L63/308
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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公开(公告)号：US20180006917A1
公开(公告)日：2018-01-04
申请号：US15198085
申请日：2016-06-30
Applicant: Cisco Technology, Inc.
CPC classification number: H04L1/0041 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L41/22 , H04L41/5003 , H04L41/5009 , H04L67/10
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.
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公开(公告)号：US09641409B2
公开(公告)日：2017-05-02
申请号：US14701882
申请日：2015-05-01
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Wei-Jen Huang , Chih-Tsung Huang , Yichou Lin
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.
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Patent Agency Ranking
公开(公告)号：US09608940B2
公开(公告)日：2017-03-28
申请号：US14658711
申请日：2015-03-16
Applicant: Cisco Technology, Inc.
Inventor： Kelvin Chan , Ganga S. Devadas , Chih-Tsung Huang , Wei-Jen Huang , Dennis K. D. Nguyen , Yue J. Yang
IPC: G06F15/173 , H04L12/861 , G06F15/167
CPC classification number: H04L49/9042 , G06F15/167 , H04L49/9057 , H04L49/9094
Abstract: Buffer designs and write/read configurations for a buffer in a network device are provided. According to one aspect, a first portion of the packet is written into a first cell of a plurality of cells of a buffer in the network device. Each of the cells has a size that is less than a minimum size of packets received by the network device. The first portion of the packet can be read from the first cell while concurrently writing a second portion of the packet to a second cell.
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公开(公告)号：US09565100B1
公开(公告)日：2017-02-07
申请号：US14921460
申请日：2015-10-23
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Alessandro Fulli , Putu Harry Subagio , Chih-Tsung Huang
IPC: H04L12/741
CPC classification number: H04L45/54 , H04L12/6418
Abstract: A packet is received at an ingress port of a network device. Based on forwarding information in the packet, an adjacency point is generated using a forwarding information database. If the packet is a routed packet, the adjacency pointer is used as an index to an entry in a media access control (MAC) table that identifies an egress port for the packet. If the packet is not a routed packet, a search is performed in the MAC table to locate an entry in the MAC table that identifies an egress port for the packet.
Abstract translation: 在网络设备的入口端口接收到分组。 基于分组中的转发信息，使用转发信息数据库生成邻接点。 如果分组是路由分组，则邻接指针被用作标识分组的出口端口的媒体接入控制（MAC）表中的条目的索引。 如果分组不是路由分组，则在MAC表中执行搜索以在MAC表中定位用于标识分组的出口端口的条目。
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公开(公告)号：US09473395B2
公开(公告)日：2016-10-18
申请号：US14628880
申请日：2015-02-23
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Alessandro Fulli , Putu Harry Subagio , Mingzhe Li , Christopher A. Wildman , Yichou Lin , Chih-Tsung Huang
IPC: H04L12/721 , H04L12/801 , H04L12/851 , H04L12/813
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.
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公开(公告)号：US09197552B1
公开(公告)日：2015-11-24
申请号：US13767091
申请日：2013-02-14
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Alessandro Fulli , Putu Harry Subagio , Chih-Tsung Huang
IPC: H04L12/741
CPC classification number: H04L45/54 , H04L12/6418
Abstract: A packet is received at an ingress port of a network device. Based on forwarding information in the packet, an adjacency point is generated using a forwarding information database. If the packet is a routed packet, the adjacency pointer is used as an index to an entry in a media access control (MAC) table that identifies an egress port for the packet. If the packet is not a routed packet, a search is performed in the MAC table to locate an entry in the MAC table that identifies an egress port for the packet.
Abstract translation: 在网络设备的入口端口接收到分组。 基于分组中的转发信息，使用转发信息数据库生成邻接点。 如果分组是路由分组，则邻接指针被用作标识分组的出口端口的媒体接入控制（MAC）表中的条目的索引。 如果分组不是路由分组，则在MAC表中执行搜索以在MAC表中定位用于标识分组的出口端口的条目。
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公开(公告)号：US20150244637A1
公开(公告)日：2015-08-27
申请号：US14707139
申请日：2015-05-08
Applicant: Cisco Technology, Inc.
Inventor： Thomas J. Edsall , Yue J. Yang , Wei-Jen Huang , Chih-Tsung Huang
IPC: H04L12/835 , H04L12/26
CPC classification number: H04L43/045 , H04L43/08 , H04L43/0882 , H04L43/10 , H04L47/24 , H04L47/30
Abstract: Techniques are presented herein to facilitate the monitoring of occupancy of a buffer in a network device. Packets are received at a network device. Information is captured describing occupancy of the buffer caused by packet flow through the buffer in the network device. Analytics packets are generated containing the information. The analytics packets from the network device for retrieval of the information contained therein for analysis, replay of buffer occupancy, etc.
Abstract translation: 这里呈现技术以便于监视网络设备中的缓冲器的占用。 数据包在网络设备上被接收。 捕获的信息描述了通过网络设备中的缓冲器的分组流引起的缓冲区的占用。 生成包含该信息的分析数据包。 来自网络设备的用于检索其中所包含的信息的分析分组用于分析，重放缓冲器占用等
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