公开(公告)号：US20230185678A1

公开(公告)日：2023-06-15

申请号：US18164246

申请日：2023-02-03

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: G06F11/14 ,  G06F13/40 ,  G06F3/06

CPC classification number: G06F11/1469 ,  G06F13/4027 ,  G06F3/0652 ,  G06F3/0673 ,  G06F3/0608 ,  G06F2201/82

Abstract: Embodiments of the present disclosure are directed to dynamic shadow operations configured to dynamically shadow data-plane resources in a network device. In some embodiments, the dynamic resource shadow operations are used to locally maintain a shadow copy of data plane resources to avoid having to read them through a bus interconnect. In other embodiments, the dynamic shadow framework is used to provide memory protection for hardware resources against SEU failures. The dynamic shadow framework may operate in conjunction with adaptive memory scrubbing operations. In other embodiments, the dynamic shadow infrastructure is used to facilitate fast boot-up and fast upgrade operations.

公开(公告)号：US10819572B2

公开(公告)日：2020-10-27

申请号：US16366968

申请日：2019-03-27

Applicant: Cisco Technology, Inc.

Inventor： Thomas Szigeti ,  David John Zacks ,  Peter Geoffrey Jones

IPC: H04L12/24 ,  H04L12/947

Abstract: Systems and methods provide for performing performance analytics processing of network traffic by copying packets of network traffic to a switch CPU based on a flag. The systems and methods disclosing receiving network traffic comprising one or more packet, generating a network traffic flow record associated with the received network traffic, the network traffic flow record including a copy-to-CPU bit and one or more function flag bits, setting the copy-to-CPU bit to an on configuration, processing the one or more packets by one or more functions to generate network flow analytics, wherein the one or more function flag bits are set in response to the one or more functions generating network flow analytics, and setting the copy-to-CPU bit to an off configuration.

公开(公告)号：US20200162319A1

公开(公告)日：2020-05-21

申请号：US16366968

申请日：2019-03-27

Applicant: Cisco Technology, Inc.

Inventor： Thomas Szigeti ,  David John Zacks ,  Peter Geoffrey Jones

IPC: H04L12/24 ,  H04L12/947

Abstract: Systems and methods provide for performing performance analytics processing of network traffic by copying packets of network traffic to a switch CPU based on a flag.

公开(公告)号：US10171306B2

公开(公告)日：2019-01-01

申请号：US14632070

申请日：2015-02-26

Applicant: Cisco Technology, Inc.

Inventor： Nalinaksh M. Pai ,  Sanjay Kumar Hooda ,  Peter Geoffrey Jones

IPC: H04L12/24 ,  H04L12/721 ,  H04L12/931 ,  H04L12/933

Abstract: Methods and system are disclosed which can simplify the configuration of a MCEC in a fabric environment such that is may become automatic. Furthermore, centralized identities (such as a host tracking database and/or a network controlled) may be employed to detect the presence of a MCEC. Requiring the creation of direct links between network devices participating in the MCEC may be avoided. Furthermore, logical L2 fabric connectivity (over a L3 fabric underlay) may be utilized to provide dual homing active-active services without additional configuration, as the tracking of peer network devices may be performed in a centralized manner. For example, a host tracking database or a network controller may be employed for peer tracking.

公开(公告)号：US20170054655A1

公开(公告)日：2017-02-23

申请号：US15248737

申请日：2016-08-26

Applicant: Cisco Technology, Inc.

Inventor： Norman William Finn ,  Rong Pan ,  Hiroshi Suzuki ,  Linda Tin-Wen Cheng ,  Peter Geoffrey Jones ,  Hariprasada Rao Ginjpalli ,  Rudolph Benedict Klecka

IPC: H04L12/911 ,  H04L12/947

CPC classification number: H04L47/826 ,  H04L47/6255 ,  H04L49/00 ,  H04L49/25

Abstract: A method for allocating port assignments for transmitting a reserved network stream across a network node comprises determining a cycle time associated with a network node. The method also comprises establishing, for at least one port of the network node, a plurality of virtual layers associated with the cycle time, wherein each of the plurality of virtual layers is divided into 2n equally-spaced slots per cycle (where n>0). The method further comprises receiving a reserved stream request associated with transmission of a reserved stream across the node, and determining a number of slots required to transmit the reserved stream. The method also comprises assigning one or more slots associated with a port of the network node to the transmission of packets associated with the reserved stream based on the determined number of slots. The method further comprises transmitting the stream according to the slot assignment associated with the port of the network node.

Abstract translation: 用于分配用于通过网络节点发送保留网络流的端口分配的方法包括确定与网络节点相关联的周期时间。 所述方法还包括为所述网络节点的至少一个端口建立与所述周期时间相关联的多个虚拟层，其中所述多个虚拟层中的每一个虚拟层每个周期被划分成2n个等间隔的时隙（其中n> 0 ）。 所述方法还包括：接收与所述节点之间的保留流的传输相关联的保留流请求，以及确定发送所述预留流所需的时隙数。 该方法还包括基于所确定的时隙数量，将与网络节点的端口相关联的一个或多个时隙分配给与保留流相关联的分组的传输。 该方法还包括根据与网络节点的端口相关联的时隙分配来发送流。

公开(公告)号：US11599424B2

公开(公告)日：2023-03-07

申请号：US16542191

申请日：2019-08-15

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: G06F11/14 ,  G06F3/06 ,  G06F13/40

Abstract: Embodiments of the present disclosure are directed to dynamic shadow operations configured to dynamically shadow data-plane resources in a network device. In some embodiments, the dynamic resource shadow operations are used to locally maintain a shadow copy of data plane resources to avoid having to read them through a bus interconnect. In other embodiments, the dynamic shadow framework is used to provide memory protection for hardware resources against SEU failures. The dynamic shadow framework may operate in conjunction with adaptive memory scrubbing operations. In other embodiments, the dynamic shadow infrastructure is used to facilitate fast boot-up and fast upgrade operations.

公开(公告)号：US11509532B2

公开(公告)日：2022-11-22

申请号：US17021265

申请日：2020-09-15

Applicant: Cisco Technology, Inc.

Inventor： Thomas Szigeti ,  David John Zacks ,  Peter Geoffrey Jones

IPC: H04L12/24 ,  H04L12/947 ,  H04L41/084 ,  H04L41/14 ,  H04L49/25

Abstract: Systems and methods provide for performing performance analytics processing of network traffic by copying packets of network traffic to a switch CPU based on a flag. The systems and methods disclosing receiving network traffic comprising one or more packet, generating a network traffic flow record associated with the received network traffic, the network traffic flow record including a copy-to-CPU bit and one or more function flag bits, setting the copy-to-CPU bit to an on configuration, processing the one or more packets by one or more functions to generate network flow analytics, wherein the one or more function flag bits are set in response to the one or more functions generating network flow analytics, and setting the copy-to-CPU bit to an off configuration.

公开(公告)号：US20210144075A1

公开(公告)日：2021-05-13

申请号：US17155312

申请日：2021-01-22

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Linda Tin-Wen Cheng ,  Melvin Tsai ,  Peter Geoffrey Jones ,  Da-Yuan Tung ,  David John Zacks

IPC: H04L12/26 ,  H04L12/741 ,  H04L29/06

Abstract: Presented herein is an exemplified system and method that provides visibility, for traffic analytics, into secured encapsulated packet (e.g., secure VXLAN-GPE packet, a secure metadata-GPE packet or other GPE standards). The exemplified system and method facilitate encryption of traffic in a granular manner that also facilitate the monitoring of said secure traffic in a fabric network in an end-to-end manner throughout the network. Such monitoring can be beneficially used for analytics, performance analysis, and network debugging/troubleshooting.

公开(公告)号：US10999173B2

公开(公告)日：2021-05-04

申请号：US16390695

申请日：2019-04-22

Applicant: Cisco Technology, Inc.

Inventor： David John Zacks ,  Vikram Vikas Pendharkar ,  Peter Geoffrey Jones ,  Thomas Szigeti ,  Praveen T. Chandra

IPC: H04L12/26 ,  H04L12/801 ,  H01L29/06 ,  H04L29/06

Abstract: Systems, methods, and computer-readable media for monitoring traffic in a network include receiving, at an analytics platform connected to the network, one or more encapsulated packet headers from one or more network nodes of the network. From the one or more encapsulated packet headers, at least one or more source addresses of the one or more network nodes which transmitted the encapsulated packet headers, and one or more timestamps at which the one or more encapsulated packet headers were transmitted from the one or more network nodes may be determined. From at least the one or more source addresses and timestamps, network traffic information such as one or more of latency or jitter of data packets transiting through the one or more network nodes may be determined, wherein the one or more encapsulated packet headers may correspond to the data packets transiting through the one or more network nodes.

公开(公告)号：US20210049043A1

公开(公告)日：2021-02-18

申请号：US16542183

申请日：2019-08-15

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: G06F9/50 ,  G06F9/4401 ,  G06F8/65 ,  G06F11/14 ,  H04L12/935

Abstract: Embodiments of the present disclosure are directed to dynamic shadow operations configured to dynamically shadow data-plane resources in a network device. In some embodiments, the dynamic resource shadow operations are used to locally maintain a shadow copy of data plane resources to avoid having to read them through a bus interconnect. In other embodiments, the dynamic shadow framework is used to provide memory protection for hardware resources against SEU failures. The dynamic shadow framework may operate in conjunction with adaptive memory scrubbing operations. In other embodiments, the dynamic shadow infrastructure is used to facilitate fast boot-up and fast upgrade operations.