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15 条记录 (耗时 0.012 秒)

    Flexible traffic control for EVPN
    1.
    发明授权
    Flexible traffic control for EVPN 有权

    公开(公告)号：US11316801B2

    公开(公告)日：2022-04-26

    申请号：US17036349

    申请日：2020-09-29

    申请人： Ciena Corporation

    发明人： Jayant Kumar Bhardwaj ,  Himanshu Shah

    IPC分类号： H04L49/25 ,  H04L12/46 ,  H04L61/50 ,  H04L45/74 ,  H04L47/24 ,  H04L69/325 ,  H04L101/622

    摘要： Systems and methods include receiving one or more Ethernet Virtual Private Network (EVPN) advertisements from one or more peer nodes with information including any of traffic characterization information and traffic control information; and providing traffic to the EVPN and to the corresponding one or more peer nodes based on the information from the corresponding one or more peer nodes. The one or more EVPN advertisements can be in an EVPN Network Layer Reachability Information (NLRI) advertisement, and the EVPN NLRI can have Route Type 1 for the information to apply to an EVPN Instance (EVI) and the EVPN NLRI can have Route Type 2 for the information to apply to a specific customer node based on a Media Access Control (MAC).

    Systems and methods to detect, locate, and switch based on signal degrade on multi-segment pseudowires
    2.
    发明授权
    Systems and methods to detect, locate, and switch based on signal degrade on multi-segment pseudowires 有权

    公开(公告)号：US10862743B2

    公开(公告)日：2020-12-08

    申请号：US16398605

    申请日：2019-04-30

    申请人： Ciena Corporation

    发明人： Jayant Kumar Bhardwaj ,  Pawan Sharma ,  Sagar Sikri

    IPC分类号： H04L12/24 ,  H04L12/933 ,  H04L12/781 ,  H04L12/26 ,  H04L12/721

    摘要： A node includes a plurality of ports configured to provide a service over a primary Multi-Segment Pseudowire (MS-PW) and a backup MS-PW in a network; a switching fabric interconnecting the plurality of ports; and a controller communicatively coupled to the plurality of ports and the switching fabric, wherein the controller is configured to receive a pseudowire status message for each of the primary MS-PW and the backup MS-PW, determine a Signal Degrade condition on one of the primary MS-PW and the backup MS-PW based on the pseudowire status message, and cause a switch of the service to an inactive one of the primary MS-PW and the backup MS-PW based on a Signal Degrade condition on an active one of the primary MS-PW and the backup MS-PW. The controller can further provide a trap to a management system based on the determined Signal Degrade condition.

    Systems and methods to detect, locate, and switch based on signal degrade on Multi-Segment Pseudowires
    3.
    发明申请
    Systems and methods to detect, locate, and switch based on signal degrade on Multi-Segment Pseudowires 审中-公开

    公开(公告)号：US20200304365A1

    公开(公告)日：2020-09-24

    申请号：US16398605

    申请日：2019-04-30

    申请人： Ciena Corporation

    发明人： Jayant Kumar Bhardwaj ,  Pawan Sharma ,  Sagar Sikri

    IPC分类号： H04L12/24 ,  H04L12/933 ,  H04L12/721 ,  H04L12/781 ,  H04L12/26

    摘要： A node includes a plurality of ports configured to provide a service over a primary Multi-Segment Pseudowire (MS-PW) and a backup MS-PW in a network; a switching fabric interconnecting the plurality of ports; and a controller communicatively coupled to the plurality of ports and the switching fabric, wherein the controller is configured to receive a pseudowire status message for each of the primary MS-PW and the backup MS-PW, determine a Signal Degrade condition on one of the primary MS-PW and the backup MS-PW based on the pseudowire status message, and cause a switch of the service to an inactive one of the primary MS-PW and the backup MS-PW based on a Signal Degrade condition on an active one of the primary MS-PW and the backup MS-PW. The controller can further provide a trap to a management system based on the determined Signal Degrade condition.

    Label distribution protocol graceful restart on existing sessions
    6.
    发明公开
    Label distribution protocol graceful restart on existing sessions 审中-公开

    公开(公告)号：US20240064096A1

    公开(公告)日：2024-02-22

    申请号：US17955805

    申请日：2022-09-29

    申请人： Ciena Corporation

    发明人： Sagar Sikri ,  Gaurav Agarwal ,  Pawan Sharma ,  Jayant Kumar Bhardwaj

    IPC分类号： H04L45/50

    CPC分类号： H04L45/507

    摘要： Systems and methods include operating a label distribution protocol (LDP) session with a peer node in a network; responsive to a change in graceful restart of the LDP session, sending a notification message to the peer node with a graceful restart capability change indication; responsive to receiving a second notification message from the peer node with graceful restart capability change indication, updating the graceful restart capability for the LDP session; and, responsive to failing to receive the second notification message, leaving the graceful restart capability as it was prior to the change.

    Bgp Lu resiliency using an anycast SID and BGP driven anycast path selection
    7.
    发明授权
    Bgp Lu resiliency using an anycast SID and BGP driven anycast path selection 有权

    公开(公告)号：US11563675B2

    公开(公告)日：2023-01-24

    申请号：US17366271

    申请日：2021-07-02

    申请人： Ciena Corporation

    发明人： Himanshu Shah ,  Atul Vadera ,  Jayant Kumar Bhardwaj ,  Piyush Sharma

    IPC分类号： H04L45/50 ,  H04L12/46 ,  H04L45/00

    摘要： A node, in a first network, includes circuitry configured to add a label stack to a packet associated with one of a Layer 2 Virtual Private Network (L2VPN) and a Layer 3 Virtual Private Network (L3VPN), wherein the packet is destined for a second network having at least a pair of Border Gateway Protocol-Label Unicast (BGP-LU) Route Reflector (RR) nodes interconnecting the first network, and wherein the label stack includes an anycast Segment Identifier (SID) for the RR nodes, in Segment Routing, and transmit the packet to the second network. The label stack also includes a BGP-LU label for a destination in the second network. Responsive to isolation of one of the RR nodes, a Point of Local Repair (PLR) node in the first network is configured to implement Topology-Independent Loop-Free Alternate (TI-LFA) for the anycast SID.

    Pseudowire and label switched path grouping to achieve scale in protection switching
    8.
    发明授权
    Pseudowire and label switched path grouping to achieve scale in protection switching 有权

    公开(公告)号：US11418418B2

    公开(公告)日：2022-08-16

    申请号：US16449503

    申请日：2019-06-24

    申请人： Ciena Corporation

    发明人： Himanshu Shah ,  Jayant Kumar Bhardwaj

    IPC分类号： H04L43/0811 ,  H04L41/0654 ,  H04L45/00 ,  H04L45/50

    摘要： A network element includes a plurality of ports interconnected by a switching fabric, wherein a port includes a plurality of connections including an infrastructure connection that operates a Bidirectional Forwarding Detection (BFD) session and a group of connections that share a similar fate for a fault as the infrastructure connection; and a controller configured to detect a fault on the infrastructure connection via the BFD session, and cause a protection switch for one or more of the group of connections based on the fault on the infrastructure connection. The infrastructure connection and the group of connections can be Pseudowires (PWE) or Label Switched Paths (LSPs) in a Multiprotocol Label Switching (MPLS) network.