公开(公告)号：US11616863B2

公开(公告)日：2023-03-28

申请号：US17153987

申请日：2021-01-21

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: H04L69/12 ,  H04L43/028 ,  H04L45/02 ,  H04L49/253 ,  H04L49/65 ,  H04L67/1001

Abstract: Embodiments of the present disclosure are directed to protocol state transition and/or resource state transition tracker configured to monitor, e.g., via filters, for certain protocol state transitions/changes or host hardware resource transitions/changes when a host processor in the control plane that performs such monitoring functions is unavailable or overloaded. The filters, in some embodiments, are pre-computed/computed by the host processor and transmitted to the protocol state transition and/or resource state transition tracker. The protocol state transition and/or resource state transition tracker may be used to implement a fast upgrade operation as well as load sharing and or load balancing operation with control plane associated components.

公开(公告)号：US11272042B2

公开(公告)日：2022-03-08

申请号：US16748256

申请日：2020-01-21

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: H04L29/06 ,  H04L12/26 ,  H04L12/751 ,  H04L12/937 ,  H04L12/931 ,  H04L29/08 ,  H04L69/12 ,  H04L43/028 ,  H04L45/02 ,  H04L49/253 ,  H04L49/65 ,  H04L67/1001

Abstract: Embodiments of the present disclosure are directed to protocol state transition and/or resource state transition tracker configured to monitor, e.g., via filters, for certain protocol state transitions/changes or host hardware resource transitions/changes when a host processor in the control plane that performs such monitoring functions is unavailable or overloaded. The filters, in some embodiments, are pre-computed/computed by the host processor and transmitted to the protocol state transition and/or resource state transition tracker. The protocol state transition and/or resource state transition tracker may be used to implement a fast upgrade operation as well as load sharing and or load balancing operation with control plane associated components.

公开(公告)号：US20200036610A1

公开(公告)日：2020-01-30

申请号：US16043779

申请日：2018-07-24

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：US10075391B2

公开(公告)日：2018-09-11

申请号：US15688228

申请日：2017-08-28

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 ,  H04L12/863 ,  H04L12/931

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.

公开(公告)号：US09749259B2

公开(公告)日：2017-08-29

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 ,  H04L12/863 ,  H04L12/947 ,  H04L12/931

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.

公开(公告)号：US20170134340A1

公开(公告)日：2017-05-11

申请号：US15411299

申请日：2017-01-20

Applicant: Cisco Technology, Inc.

Inventor： Rajagopalan Janakiraman ,  Pagalavan Krishnamoorthy ,  Peter Geoffrey Jones ,  Sridhar Subramanian

IPC: H04L29/12 ,  H04L12/741

CPC classification number: H04L61/2015 ,  H04L12/462 ,  H04L12/4633 ,  H04L45/745 ,  H04L61/103

Abstract: A system, computer-readable media, and methods for network resource sharing of routing and forwarding information are disclosed. The method may include receiving a first address for a device connected to a network and receiving one or more second addresses for the device. The method may also include identifying a first switch through which the device connects to the network and identifying a second switch for storing the first address and the one or more second addresses. Further, the method may include storing the first address in the first switch and storing the first address and the one or more second addresses in the second switch.

公开(公告)号：US20160254960A1

公开(公告)日：2016-09-01

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

CPC classification number: H04L41/12 ,  H04L41/0806 ,  H04L41/0886 ,  H04L45/66 ,  H04L49/15 ,  H04L49/351 ,  H04L49/65

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.

Abstract translation: 公开了可以简化在织物环境中的MCEC的配置的方法和系统，使得可以变得自动化。 此外，可以采用集中式身份（例如主机跟踪数据库和/或网络控制）来检测MCEC的存在。 可以避免在参与MCEC的网络设备之间创建直接链路。 此外，可以利用逻辑L2架构连接（通过L3架构底层）来提供双重归属活动主动服务而无需附加配置，因为对等网络设备的跟踪可以以集中的方式执行。 例如，可以采用主机跟踪数据库或网络控制器来进行对等跟踪。

公开(公告)号：US12135622B2

公开(公告)日：2024-11-05

申请号：US18484765

申请日：2023-10-11

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：US11881962B2

公开(公告)日：2024-01-23

申请号：US17826525

申请日：2022-05-27

Applicant: Cisco Technology, Inc.

Inventor： Aaditi Ganesh Pai ,  Deepika Mulani ,  Pooja Indi ,  Sasikumar Sadayan ,  Trupthi Bharatraj Chougule ,  Peter Geoffrey Jones ,  Shawn Wargo

IPC: H04L12/18 ,  H04L45/52

CPC classification number: H04L12/185 ,  H04L45/52

Abstract: Hybrid mode multicast routing may be provided. A switching device may receive a first join. Next, in response to receiving the first join, states for a first protocol mode (e.g., (S, G)) that is source aware and state for a second protocol mode (e.g., (*, G)) that is not source aware may be programed. Then a second join may be sent based on the states associated with the second protocol mode (e.g., (*, G)).

公开(公告)号：US11765254B2

公开(公告)日：2023-09-19

申请号：US17590363

申请日：2022-02-01

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

IPC: H04L69/12 ,  H04L43/028 ,  H04L45/02 ,  H04L49/253 ,  H04L49/65 ,  H04L67/1001

CPC classification number: H04L69/12 ,  H04L43/028 ,  H04L45/02 ,  H04L49/254 ,  H04L49/65 ,  H04L67/1001

Abstract: Embodiments of the present disclosure are directed to protocol state transition and/or resource state transition tracker configured to monitor, e.g., via filters, for certain protocol state transitions/changes or host hardware resource transitions/changes when a host processor in the control plane that performs such monitoring functions is unavailable or overloaded. The filters, in some embodiments, are pre-computed/computed by the host processor and transmitted to the protocol state transition and/or resource state transition tracker. The protocol state transition and/or resource state transition tracker may be used to implement a fast upgrade operation as well as load sharing and or load balancing operation with control plane associated components.