Facilitating hitless security key rollover using data plane feedback

    公开(公告)号:US11368294B2

    公开(公告)日:2022-06-21

    申请号:US16907685

    申请日:2020-06-22

    Abstract: A first network device may install a receiving key for decrypting traffic on protocol hardware associated with a data plane of the first network device. The first network device may receive, from the data plane, a first notification indicating that the receiving key is installed on the protocol hardware and may provide, to a second network device, a first message identifying the receiving key. The first network device may receive, from the second network device, an acknowledgment message indicating that the receiving key is installed on the second network device and may install a transmission key for encrypting traffic on the protocol hardware. The first network device may receive, from the data plane, a second notification indicating that the transmission key is installed on the protocol hardware and may provide, to the second network device, a second message identifying the transmission key.

    Deleting stale or unused keys to guarantee zero packet loss

    公开(公告)号:US12212667B2

    公开(公告)日:2025-01-28

    申请号:US17662481

    申请日:2022-05-09

    Inventor: Sumeet Mundra

    Abstract: A first network device may install a new receive key on a data plane of the first network device, and may provide, to a second network device, a first request to install the new receive key. The first network device may receive a first indication that the new receive key is installed by the second network device, and may install a new transmit key on the data plane of the first network device based on the first indication. The first network device may provide, to the second network device, a second request to install the new transmit key, and may receive a second indication that the new transmit key is installed and that an old receive key is deleted by the second network device. The first network device may delete the old receive key from the data plane of the first network device based on the second indication.

    Facilitating hitless security key rollover using data plane feedback

    公开(公告)号:US11626981B2

    公开(公告)日:2023-04-11

    申请号:US17457951

    申请日:2021-12-07

    Abstract: A first network device may install a receiving key for decrypting traffic on protocol hardware associated with a data plane of the first network device. The first network device may receive, from the data plane, a first notification indicating that the receiving key is installed on the protocol hardware and may provide, to a second network device, a first message identifying the receiving key. The first network device may receive, from the second network device, an acknowledgment message indicating that the receiving key is installed on the second network device and may install a transmission key for encrypting traffic on the protocol hardware. The first network device may receive, from the data plane, a second notification indicating that the transmission key is installed on the protocol hardware and may provide, to the second network device, a second message identifying the transmission key.

    Preventing packet loss during timer-based encryption key rollover

    公开(公告)号:US11570162B1

    公开(公告)日:2023-01-31

    申请号:US17218928

    申请日:2021-03-31

    Abstract: A key server network device may install, on the key server network device, a new decryption key based on a timer-based key rollover setting and may provide, to peer network devices, messages identifying the new decryption key. The key server network device may utilize an original encryption key, to encrypt traffic, until all of the peer network devices provide acknowledgements of installation of the new decryption key. The key server network device may be configured to utilize the original encryption key based on the timer-based key rollover setting. The key server network device may generate an alarm. The alarm may include information indicating that the key server network device is waiting for the acknowledgements from one or more peer network devices and information identifying the one or more peer network devices.

    Distributed predictive packet quantity threshold reporting

    公开(公告)号:US10972442B1

    公开(公告)日:2021-04-06

    申请号:US16413172

    申请日:2019-05-15

    Abstract: A first line card of a first network device may receive packets to be transmitted to a second line card of a second network device. The first line card may predict an earliest satisfaction time for satisfaction of a first packet quantity threshold of one or more packet quantity thresholds. The first line card may transmit the packets to the second line card. The first line card may determine whether a quantity of transmitted packets transmitted by the first line card satisfies the first packet quantity threshold. Based on whether the quantity of transmitted packets satisfies the one or more of the one or more packet quantity thresholds, the first line card may perform one or more actions related to modifying a security key, or may perform one or more other actions related to monitoring transmission of the packets.

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