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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
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.
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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.
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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.
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公开(公告)号：US11546275B2
公开(公告)日：2023-01-03
申请号：US17029588
申请日：2020-09-23
Applicant: Cisco Technology, Inc.
Inventor： Riaz Khan , Atri Indiresan , Manas Pati
IPC: H04L12/939 , 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.
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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.
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Patent Agency Ranking
公开(公告)号：US11863383B2
公开(公告)日：2024-01-02
申请号：US17850261
申请日：2022-06-27
Applicant: Cisco Technology, Inc.
Inventor： Riaz Khan , Atri Indiresan
IPC: H04L41/0816 , H04L41/08 , H04L41/0604 , G06F11/36 , H04L43/50 , H04L12/46 , H04L45/28
CPC classification number: H04L41/0816 , G06F11/3656 , G06F11/3664 , H04L12/4633 , H04L41/0627 , H04L41/0886 , H04L43/50 , H04L45/28
Abstract: An exemplary method is disclosed that facilitate the on-demand creation of an exemplary instrumented network device in a cloud infrastructure, remote server, evaluation platform, or customized testing server and to form a stack between the instrumented network device as a debug network device and a target network device. The control plane of the target network device then switches over, via a switchover operation, to the control plane of the debug network device, while the data-plane of the target network device continues to operate. Once switched over, the instrumentation (e.g., hardware or software) of the control plane or debug network device facilitates the debug, optimization, profile, and/or recovery of the physical network device, even in a live network.
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公开(公告)号：US11537432B2
公开(公告)日：2022-12-27
申请号：US16542183
申请日：2019-08-15
Applicant: Cisco Technology, Inc.
Inventor： Riaz Khan , Peter Geoffrey Jones
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.
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公开(公告)号：US20220407775A1
公开(公告)日：2022-12-22
申请号：US17850261
申请日：2022-06-27
Applicant: Cisco Technology, Inc.
Inventor： Riaz Khan , Atri Indiresan
IPC: H04L41/0816 , H04L41/08 , H04L41/0604 , G06F11/36 , H04L43/50 , H04L12/46 , H04L45/28
Abstract: An exemplary method is disclosed that facilitate the on-demand creation of an exemplary instrumented network device in a cloud infrastructure, remote server, evaluation platform, or customized testing server and to form a stack between the instrumented network device as a debug network device and a target network device. The control plane of the target network device then switches over, via a switchover operation, to the control plane of the debug network device, while the data-plane of the target network device continues to operate. Once switched over, the instrumentation (e.g., hardware or software) of the control plane or debug network device facilitates the debug, optimization, profile, and/or recovery of the physical network device, even in a live network.
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公开(公告)号：US20220159102A1
公开(公告)日：2022-05-19
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
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.
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公开(公告)号：US20210049078A1
公开(公告)日：2021-02-18
申请号：US16542191
申请日：2019-08-15
Applicant: Cisco Technology, Inc.
Inventor： Riaz Khan , Peter Geoffrey Jones
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.
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