公开(公告)号：US20150124590A1

公开(公告)日：2015-05-07

申请号：US14508909

申请日：2014-10-07

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha

IPC: H04L12/703 ,  H04L12/24 ,  H04L12/931 ,  H04L12/741

CPC classification number: H04L45/28 ,  H04L12/18 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4645 ,  H04L41/0654 ,  H04L43/0811 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/02 ,  H04L45/021 ,  H04L45/22 ,  H04L45/24 ,  H04L45/245 ,  H04L45/48 ,  H04L45/50 ,  H04L45/64 ,  H04L45/74 ,  H04L45/745 ,  H04L45/7453 ,  H04L47/125 ,  H04L49/70 ,  H04L51/14 ,  H04L61/2503 ,  H04L61/2592 ,  H04L67/10 ,  H04L69/22 ,  H04L2212/00

Abstract: Aspects of the subject disclosure relate to methods for detecting a link failure between the first network device and a destination node, receiving a data packet addressed to the destination node, and rewriting encapsulation information of the first data packet. Subsequent to rewriting the encapsulation information of the first data packet, the first data packet is forwarded to a second network device (e.g., using updated address information in the packet header), wherein the second network device is paired with the first network device in the virtual port channel. In certain aspects, systems and computer readable media are also provided.

Abstract translation: 本公开的方面涉及用于检测第一网络设备和目的地节点之间的链路故障的方法，接收寻址到目的地节点的数据分组以及重写第一数据分组的封装信息。 在重写第一数据分组的封装信息之后，将第一数据分组转发到第二网络设备（例如，使用分组报头中的更新的地址信息），其中第二网络设备与第一网络设备配对 虚拟端口通道。 在某些方面，还提供了系统和计算机可读介质。

公开(公告)号：US09001830B2

公开(公告)日：2015-04-07

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: H04L12/28 ,  H04L12/721 ,  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.

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。

公开(公告)号：US08942100B2

公开(公告)日：2015-01-27

申请号：US13708229

申请日：2012-12-07

Applicant: Cisco Technology, Inc.

Inventor： Thomas J. Edsall ,  Ganga Sudharshini Devadas ,  Dennis Khoa Dang Nguyen ,  Chih-Tsung Huang

IPC: H04L12/26 ,  H04L12/801 ,  G06F13/38 ,  H04L12/835

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.

Abstract translation: 这里提出了用于检测和表征网络设备中的缓冲器的缓冲器占用的技术。 数据包在网络设备上被接收。 当网络设备处理时，数据包被存储在网络设备的缓冲器中。 以采样率对缓冲器的占用电平进行采样。 根据采样确定缓冲区的占用水平，通过网络设备的业务流量基于占用水平进行表征。

公开(公告)号：US20130343397A1

公开(公告)日：2013-12-26

申请号：US13903580

申请日：2013-05-28

Applicant: Cisco Technology, Inc.

Inventor： Scott S. Lee ,  Dinesh G. Dutt ,  Thomas J. Edsall

IPC: H04L12/723

CPC classification number: H04L45/50 ,  H04L12/4604 ,  H04L45/00

Abstract: Methods and apparatus are provided for label switched routing in fibre channel networks. Techniques are provided for implementing label switching based on particular characteristics of fibre channel networks. By using label switching, mechanisms such as traffic engineering, security, and tunneling through networks that do not support fibre channel frames can be implemented.

Abstract translation: 为光纤通道网络中的标签交换路由提供了方法和设备。 提供了基于光纤通道网络的特定特征实现标签切换的技术。 通过使用标签交换，可以实现诸如流量工程，安全性和通过不支持光纤信道帧的网络的隧道等机制。

公开(公告)号：US12218846B2

公开(公告)日：2025-02-04

申请号：US18418169

申请日：2024-01-19

Applicant: Cisco Technology, Inc.

Inventor： Mohammadreza Alizadeh Attar ,  Thomas J. Edsall ,  Sarang M. Dharmapurikar ,  Janakiramanan Vaidyanathan

IPC: H04L47/125 ,  H04L45/00

Abstract: In accordance with one embodiment, a source leaf device receives a packet.
The source leaf device identifies a flowlet associated with the packet and a destination leaf device to which the packet is to be transmitted. The source leaf device may determine whether the flowlet is a new flowlet. The source leaf device may select an uplink of the source leaf device via which to transmit the flowlet to the destination leaf device according to whether the flowlet is a new flowlet. The source leaf device may then transmit the packet to the destination leaf device via the uplink.

公开(公告)号：US20240163215A1

公开(公告)日：2024-05-16

申请号：US18416722

申请日：2024-01-18

Applicant: Cisco Technology, Inc.

Inventor： Mohammadreza Alizadeh Attar ,  Thomas J. Edsall ,  Sarang M. Dharmapurikar ,  Janakiramanan Vaidyanathan

IPC: H04L47/125 ,  H04L45/00

CPC classification number: H04L47/125 ,  H04L45/38

Abstract: In accordance with one embodiment, a source leaf device receives a packet. The source leaf device identifies a flowlet associated with the packet and a destination leaf device to which the packet is to be transmitted. The source leaf device may determine whether the flowlet is a new flowlet. The source leaf device may select an uplink of the source leaf device via which to transmit the flowlet to the destination leaf device according to whether the flowlet is a new flowlet. The source leaf device may then transmit the packet to the destination leaf device via the uplink.

公开(公告)号：US20220385568A1

公开(公告)日：2022-12-01

申请号：US17327381

申请日：2021-05-21

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L45/16 ,  H04L45/7453

Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US11362960B2

公开(公告)日：2022-06-14

申请号：US16738659

申请日：2020-01-09

Applicant: Cisco Technology, Inc.

Inventor： Rong Pan ,  Parvin Taheri ,  Thomas J. Edsall

IPC: H04L47/625 ,  H04L47/26 ,  H04L47/30 ,  H04L47/50 ,  H04L47/6275 ,  H04L43/16 ,  H04L47/2441 ,  H04L67/1097

Abstract: A network device, including ports that receive/send data packets from/to a network, receives data packets of multiple traffic flows, and populates a queue in memory with the data packets. The network device periodically updates a fair rate for the multiple traffic flows to converge a length of the queue to a reference length. Specifically, the network device determines a length of the queue, a change in the length from a previous length, and a deviation of the length from the reference length. The network device detects an increase in the change in length above a threshold that is based on the reference length. If the increase is not above the threshold, the network device derives the fair rate from a previous fair rate using proportional integral control. The network device identifies elephant flows among the multiple traffic flows, and sends the fair rate to a source of each elephant flow.

公开(公告)号：US20200244483A1

公开(公告)日：2020-07-30

申请号：US16846091

申请日：2020-04-10

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L12/46 ,  H04L12/755 ,  H04L12/743 ,  H04L12/753 ,  H04L12/707 ,  H04L12/18 ,  H04L29/12 ,  H04L12/931 ,  H04L12/741 ,  H04L12/26 ,  H04L12/24 ,  H04L29/08 ,  H04L12/58 ,  H04L29/06 ,  H04L12/751 ,  H04L12/723 ,  H04L12/709

Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US20190173777A1

公开(公告)日：2019-06-06

申请号：US16268409

申请日：2019-02-05

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha

IPC: H04L12/703 ,  H04L12/26 ,  H04L12/18 ,  H04L12/755 ,  H04L12/46 ,  H04L12/707 ,  H04L12/753 ,  H04L12/743 ,  H04L12/741 ,  H04L29/12 ,  H04L12/931 ,  H04L12/24 ,  H04L12/723 ,  H04L12/709 ,  H04L29/08 ,  H04L12/58 ,  H04L29/06 ,  H04L12/751

Abstract: Aspects of the subject disclosure relate to methods for detecting a link failure between the first network device and a destination node, receiving a data packet addressed to the destination node, and rewriting encapsulation information of the first data packet. Subsequent to rewriting the encapsulation information of the first data packet, the first data packet is forwarded to a second network device (e.g., using updated address information in the packet header), wherein the second network device is paired with the first network device in the virtual port channel. In certain aspects, systems and computer readable media are also provided.