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    MULTI-HOP PHYSICAL LAYER DATA COLLECTION PROTOCOL
    2.
    发明申请
    MULTI-HOP PHYSICAL LAYER DATA COLLECTION PROTOCOL 有权

    公开(公告)号：US20220103473A1

    公开(公告)日：2022-03-31

    申请号：US17032450

    申请日：2020-09-25

    申请人： Juniper Networks, Inc.

    发明人： Manish Talwar ,  Ajay Kachrani ,  Gert Grammel ,  Hao Wang ,  Tanweer Biswas

    IPC分类号： H04L12/741 ,  H04L12/751 ,  H04L29/06

    摘要： Disclosed embodiments utilize a layer three and/or layer four protocol to collect physical layer properties along a multi-hop network path between a source node and a destination node. The use of a layer three or layer four protocol provides an ability to span multiple links or networks between the source node and destination node, while also collecting the physical layer properties. Once physical layer properties along a network path can be understood, decisions relating to the configuration of the network path and/or whether to communicate via the network path are improved.

    Securing multiprotocol label switching (MPLS) payloads
    3.
    发明授权
    Securing multiprotocol label switching (MPLS) payloads 有权

    公开(公告)号：US11882029B2

    公开(公告)日：2024-01-23

    申请号：US17663319

    申请日：2022-05-13

    申请人： Juniper Networks, Inc.

    发明人： Tarek Saad ,  Manish Talwar ,  Raveendra Torvi ,  Ajay Kachrani ,  Kireeti Kompella

    IPC分类号： H04L45/50 ,  H04L45/00 ,  H04L69/22 ,  H04L9/40

    CPC分类号： H04L45/50 ,  H04L45/66 ,  H04L63/0464 ,  H04L63/061 ,  H04L69/22

    摘要： In some implementations, an ingress network device of a multiprotocol label switching (MPLS) network may receive a packet destined for a destination network device. The ingress network device may determine, based on the packet, a secure function to secure the packet and a label associated with a label-switched path (LSP) from the ingress network device to an egress network device of the MPLS network that is associated with the destination network device. The ingress network device may encrypt, using the secure function, the packet to generate an encrypted packet. The ingress network device may generate an MPLS packet comprising: an MPLS header that includes the label and a secure function indicator, a secure MPLS data header that includes information identifying the secure function, and an MPLS payload that includes the encrypted packet. The ingress network device may forward, based on the label, the MPLS packet.

    Error handling for media access control security
    4.
    发明授权
    Error handling for media access control security 有权

    公开(公告)号：US11336647B2

    公开(公告)日：2022-05-17

    申请号：US17038222

    申请日：2020-09-30

    申请人： Juniper Networks, Inc.

    发明人： Manish Talwar ,  Ajay Kachrani ,  Gert Grammel ,  Hao Wang ,  Tanweer Biswas

    IPC分类号： H04L29/06 ,  H04L65/1069 ,  H04L101/622 ,  H04L41/0604 ,  H04L45/00 ,  H04L43/16

    摘要： Embodiments improve error detection and recovery in media access control security sessions. A MACsec session is torn down after three liveness time intervals elapse without receiving a MACsec key exchange protocol data unit (MKPDU) from a remote peer. This delay between a cessation of effective network communication over the MACsec session and the expiration of the three “liveness” intervals results in increased packet loss and an increased network convergence time as a network continues to route/forward data over the MACsec session for a period of time after the MACsec session has entered secure block mode. To solve this problem, embodiments define a new alarm, called a MACsec link alert, which is raised earlier than a MACsec session timeout generated by traditional embodiments. The MACsec link alert is raised, by at least some embodiments, after a failure to successfully receive an MKPDU from the remote peer after a single MACsec “liveness” timeout interval elapses.

    Methods and apparatus for detecting a signal degradation using the pre-forward error correction bit error rate at an optical transponder
    8.
    发明授权
    Methods and apparatus for detecting a signal degradation using the pre-forward error correction bit error rate at an optical transponder 有权

    公开(公告)号：US10425345B2

    公开(公告)日：2019-09-24

    申请号：US15720472

    申请日：2017-09-29

    申请人： Juniper Networks, Inc.

    发明人： Ajay Kachrani ,  Manish Talwar ,  Elmer Tolentino ,  Rathi Kartheek ,  Hao Wang

    IPC分类号： H04L12/823 ,  H04L1/20 ,  H04B10/40 ,  H04L12/26 ,  H04Q11/00

    摘要： In some embodiments, an apparatus comprises an optical transponder which includes a processor, an electrical interface and an optical interface. The processor is operatively coupled to the electrical interface and the optical interface. The optical interface is configured to be operatively coupled to a plurality of optical links and the electrical interface is configured to be operatively coupled to a router such that the optical transponder is configured to be operatively coupled between the plurality of optical links and the router. The processor is configured to perform pre-forward error correction (FEC) bit error rate (BER) detection to identify a degradation of an optical link from the plurality of optical links. The processor is configured to make modifications to packets designated to be transmitted via the optical link in response to the degradation being identified such that the router is notified of the degradation of the optical link.