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：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.

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：US20230083347A1

公开(公告)日：2023-03-16

申请号：US18058015

申请日：2022-11-22

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: H04L49/55 ,  H04L49/00 ,  G06F13/38 ,  H04L67/1095 ,  H04L69/08 ,  H04L49/15

Abstract: An embodiment is directed to switchover operations with a mobile virtualized network device in a mobile device. The mobile virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.

公开(公告)号：US20220091870A1

公开(公告)日：2022-03-24

申请号：US17029559

申请日：2020-09-23

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: G06F9/455 ,  H04L29/08 ,  H04L12/24 ,  H04L12/44 ,  G06F9/4401 ,  G06F8/656

Abstract: An embodiment is directed to switchover operations with a virtualized network device in a cloud or remote infrastructure. The virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.

公开(公告)号：US20240036993A1

公开(公告)日：2024-02-01

申请号：US18484765

申请日：2023-10-11

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：US11882060B2

公开(公告)日：2024-01-23

申请号：US18058015

申请日：2022-11-22

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: H04L49/55 ,  H04L49/00 ,  G06F13/38 ,  H04L67/1095 ,  H04L69/08 ,  H04L49/15

CPC classification number: H04L49/557 ,  G06F13/387 ,  H04L49/15 ,  H04L49/70 ,  H04L67/1095 ,  H04L69/08

Abstract: An embodiment is directed to switchover operations with a mobile virtualized network device in a mobile device. The mobile virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.

公开(公告)号：US11822437B2

公开(公告)日：2023-11-21

申请号：US18164246

申请日：2023-02-03

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Peter Geoffrey Jones

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

CPC classification number: G06F11/1469 ,  G06F3/0608 ,  G06F3/0652 ,  G06F3/0673 ,  G06F13/4027 ,  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：US11593144B2

公开(公告)日：2023-02-28

申请号：US17029559

申请日：2020-09-23

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: G06F9/455 ,  H04L12/44 ,  H04L41/12 ,  G06F8/656 ,  G06F9/4401 ,  H04L67/141 ,  H04L67/00

Abstract: An embodiment is directed to switchover operations with a virtualized network device in a cloud or remote infrastructure. The virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.

公开(公告)号：US20220094645A1

公开(公告)日：2022-03-24

申请号：US17029588

申请日：2020-09-23

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: H04L12/939 ,  H04L12/931 ,  H04L12/933 ,  H04L29/08 ,  H04L29/06 ,  G06F13/38

Abstract: An embodiment is directed to switchover operations with a mobile virtualized network device in a mobile device. The mobile virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.