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    DETECTING FAILURE OF LAYER 2 SERVICE USING BROADCAST MESSAGES
    12.
    发明公开
    DETECTING FAILURE OF LAYER 2 SERVICE USING BROADCAST MESSAGES 审中-公开

    公开(公告)号：US20240015086A1

    公开(公告)日：2024-01-11

    申请号：US18370006

    申请日：2023-09-19

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Stephen Tan ,  Rahul Mishra ,  Kantesh Mundaragi ,  Jayant Jain ,  Akhila Naveen

    IPC分类号： H04L43/0805 ,  H04L41/0668 ,  H04L43/10

    CPC分类号： H04L43/0805 ,  H04L41/0668 ,  H04L43/10

    摘要： Some embodiments provide a method for detecting a failure of a layer 2 (L2) bump-in-the-wire service at a device. In some embodiments, the device sends heartbeat signals to a second device connected to L2 service nodes in order to detect failure of the L2 service (e.g., a failure of all the service nodes). In some embodiments, the heartbeat signals are unidirectional heartbeat signals (e.g., a unidirectional bidirectional-forwarding-detection (BFD) session) sent from each device to the other. The heartbeat signals, in some embodiments, use a broadcast MAC address in order to reach the current active L2 service node in the case of a failover (i.e., an active service node failing and a standby service node becoming the new active service node). The unidirectional heartbeat signals are also used, in some embodiments, to decrease the time between a failover and data messages being forwarded to the new active service node.

    FLOW GENERATION FROM SECOND LEVEL CONTROLLER TO FIRST LEVEL CONTROLLER TO MANAGED SWITCHING ELEMENT
    14.
    发明公开
    FLOW GENERATION FROM SECOND LEVEL CONTROLLER TO FIRST LEVEL CONTROLLER TO MANAGED SWITCHING ELEMENT 审中-公开

    公开(公告)号：US20230421410A1

    公开(公告)日：2023-12-28

    申请号：US18244243

    申请日：2023-09-09

    申请人： Nicira, Inc.

    发明人： Teemu Koponen ,  Martin Casado ,  Pankaj Thakkar ,  Ronghua Zhang ,  Daniel J. Wendlandt

    IPC分类号： H04L12/66 ,  H04L45/02 ,  H04L41/044

    CPC分类号： H04L12/66 ,  H04L45/04 ,  H04L41/044

    摘要： A network system that includes a first set of network hosts in a first domain and a second set of network hosts in a second domain. Within each of the domains, the system includes several edge switching elements (SEs) that each couple to the network hosts and forward network data to and from the set of network hosts. Within the first domain, the system includes (i) an interior SE that couples to a particular edge SE in order to receive network data for forwarding from the edge SE when the edge SE does not recognize a destination location of the network data and (ii) an interconnection SE that couples to the interior SE, the edge SE, and the second domain through an external network. When the edge SE receives network data with a destination address in the second domain, it forwards the network data directly to the interconnection SE.

    SEGMENTATION OF ENCRYPTED SEGMENTS IN NETWORKS
    15.
    发明公开
    SEGMENTATION OF ENCRYPTED SEGMENTS IN NETWORKS 审中-公开

    公开(公告)号：US20230396598A1

    公开(公告)日：2023-12-07

    申请号：US18450345

    申请日：2023-08-15

    申请人： NICIRA, INC.

    发明人： Wenyi JIANG ,  Daniel G. WING ,  Bin QIAN ,  Dexiang WANG

    IPC分类号： H04L9/40 ,  H04L47/36 ,  H04L69/324 ,  H04L69/22

    CPC分类号： H04L63/0485 ,  H04L47/36 ,  H04L63/029 ,  H04L69/324 ,  H04L69/22

    摘要： A first host receives a packet from a first compute node for a second compute node of a second host. The payload is larger than a maximum transmission unit size. The first packet is encapsulated with an outer header. The first host analyzes a length of at least a portion of the outer header in determining a size of an encrypted segment of the payload. Then, the first host forms a plurality of packets where each packet in the packets includes an encrypted segment of the payload, a respective encryption header, and a respective authentication value. The payload of the first packet is segmented to form a plurality of encrypted segments based on the size. The first host sends the packets to the second host and receives an indication that a packet was not received. A second packet including the encrypted segment is sent to the second compute node.

    Group-based network event notification
    16.
    发明授权
    Group-based network event notification 有权

    公开(公告)号：US11831492B2

    公开(公告)日：2023-11-28

    申请号：US15342123

    申请日：2016-11-03

    申请人： NICIRA, INC.

    发明人： Vaibhav Bhandari ,  Naveen Ramaswamy

    IPC分类号： H04L41/0686 ,  H04L41/0604

    CPC分类号： H04L41/0686 ,  H04L41/0604 ,  H04L41/0618

    摘要： Example methods are provided for network management entity to perform group-based network event notification in a network environment that includes the network management entity and a notification consumer. The method may comprise: in response to detection of a first network event associated with a group, withholding notification of the first network event to the notification consumer; and in response to detection of a second network event associated with the group, withholding notification of the second network event to the notification consumer. The method may further comprise generating a group notification associated with the group, wherein the group notification is an aggregate notification to report the detection of at least the first network event and second network event; and sending the group notification to the notification consumer.

    Congestion-aware load balancing in data center networks
    19.
    发明授权
    Congestion-aware load balancing in data center networks 有权

    公开(公告)号：US11777853B2

    公开(公告)日：2023-10-03

    申请号：US15485139

    申请日：2017-04-11

    申请人： Nicira, Inc.

    发明人： Mukesh Hira ,  Naga Katta

    IPC分类号： H04L47/125 ,  H04L47/11 ,  H04L45/12 ,  H04L43/0876 ,  H04L41/0896 ,  H04L43/10

    CPC分类号： H04L47/125 ,  H04L41/0896 ,  H04L43/0876 ,  H04L43/10 ,  H04L45/123 ,  H04L47/115

    摘要： Example methods are provided for a first switch to perform congestion-aware load balancing in a data center network. The method may comprise: receiving probe packets from multiple next-hop second switches that connect the first switch with a third switch via multiple paths. The method may also comprise: processing congestion state information in each probe packet to select a selected next-hop second switch from the multiple next-hop second switches, the selected next-hop second switch being associated with a least congested path from the first switch to the third switch. The method may further comprise: in response to receiving data packets from a fourth switch that are destined for a destination connected with the third switch, sending the data packets to the selected next-hop second switch such that the data packets travel to the third switch along the least congested path.