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    Detecting failure of layer 2 service using broadcast messages
    31.
    发明授权
    Detecting failure of layer 2 service using broadcast messages 有权

    公开(公告)号：US11038782B2

    公开(公告)日：2021-06-15

    申请号：US16945868

    申请日：2020-08-01

    申请人： Nicira, Inc.

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

    IPC分类号： H04L12/26 ,  H04L12/24

    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.

    DISTRIBUTED MULTICAST LOGICAL ROUTER
    32.
    发明申请
    DISTRIBUTED MULTICAST LOGICAL ROUTER 有权

    公开(公告)号：US20210111914A1

    公开(公告)日：2021-04-15

    申请号：US17129788

    申请日：2020-12-21

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Sharath Bhat ,  Jerome Catrouillet ,  Subin Cyriac Mathew ,  Alexander Tessmer

    IPC分类号： H04L12/18 ,  H04L12/761

    摘要： Some embodiments provide a method for configuring a set of MFEs to implement a distributed multicast logical router and multiple logical switches to process the multicast data messages. The method sends, from a managed forwarding element (MFE) implementing the distributed multicast logical router, a multicast group query to a set of data compute nodes (DCNs) that are logically connected to one of several logical switches and that execute on the same host machine as the managed forwarding element. The method receives multicast group reports from a subset of the set of DCNs and at least one of the multicast group reports specifies a multicast group of interest. The method distributes, to a set of MFEs executing on other host machines, a summarized multicast group report specifying a set of multicast groups of interest to the first MFE (i.e., multicast groups that the first MFE participates in).

    SERVICE OPERATION CHAINING
    33.
    发明申请
    SERVICE OPERATION CHAINING 有权

    公开(公告)号：US20210044502A1

    公开(公告)日：2021-02-11

    申请号：US17067635

    申请日：2020-10-09

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Pere Monclus ,  Philip Kippen ,  Dharma Rajan ,  Yashika Narang

    IPC分类号： H04L12/24 ,  H04L12/26 ,  H04L29/08 ,  H04L12/851 ,  H04L12/701 ,  H04L12/46

    摘要： For a multi-tenant environment, some embodiments of the invention provide a novel method for forwarding tenant traffic through a set of service machines to perform a set of service operations on the tenant traffic. In some embodiments, the method performs a classification operation on a data message flow of a tenant, in order to identify a set of service operations to perform on the data message flow. For some data message flows, the classification operation selects the identified set of service operations from several candidate sets of service operations that are viable service operation sets for similar data message flows of the tenant. In some embodiments, the classification operation is based on a set of attributes associated with the data message flow (e.g., five tuple identifier, i.e., protocol and source and destination ports and IP addresses).

    Detecting failure of layer 2 service using broadcast messages
    34.
    发明授权
    Detecting failure of layer 2 service using broadcast messages 有权

    公开(公告)号：US10805192B2

    公开(公告)日：2020-10-13

    申请号：US15937621

    申请日：2018-03-27

    申请人： Nicira, Inc.

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

    IPC分类号： H04L12/26 ,  H04L12/24

    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.

    ASYMMETRIC NETWORK ELEMENTS SHARING AN ANYCAST ADDRESS
    35.
    发明申请
    ASYMMETRIC NETWORK ELEMENTS SHARING AN ANYCAST ADDRESS 审中-公开

    公开(公告)号：US20200021521A1

    公开(公告)日：2020-01-16

    申请号：US16579809

    申请日：2019-09-23

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Mani Kancherla

    IPC分类号： H04L12/717 ,  H04L29/12 ,  G06F9/50

    摘要： For a managed network implementing at least one logical router having centralized and distributed components, some embodiments provide a method that better supports the provision of certain network applications and/or services. The method receives at a host implementing (1) a distributed logical router and (2) a plurality of logical switches of a logical network along with other hosts, a message from a first data compute node (DCN) executing on the host. The host logically forwards the message to the distributed logical router that uses a particular anycast internet protocol (IP) address using a first media access control (MAC) address. The distributed router determines that the message requires processing by a centralized logical router (e.g., a service router, edge node, etc.) executing on an edge node host and forwards the message to the centralized logical router using the same anycast IP address and a second, unique MAC address.

    ANYCAST EDGE SERVICE GATEWAYS
    36.
    发明申请
    ANYCAST EDGE SERVICE GATEWAYS 审中-公开

    公开(公告)号：US20190312812A1

    公开(公告)日：2019-10-10

    申请号：US16447939

    申请日：2019-06-20

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Anirban Sengupta ,  Sreeram Ravinoothala ,  Liwen Wu

    IPC分类号： H04L12/803 ,  H04L12/24 ,  H04L12/741 ,  H04L12/715 ,  H04L12/46 ,  H04L12/931 ,  H04L12/66 ,  H04L12/713

    摘要： Some embodiments provide a method for managing traffic in a virtualized environment. The method, in some embodiments, configures multiple edge service gateways (ESGs) executing on multiple host machines (e.g., on a hypervisor) to use a same anycast inner internet protocol (IP) address and a same anycast inner media access control (MAC) address. In some embodiments, ESGs of a logical network facilitate communication between machines connected to the logical network and machines on external networks. In some embodiments, the method configures a set of virtual extensible local area network tunnel endpoints (VTEPs) connected to an ESG to use a same anycast VTEP IP address. The method, in some embodiments, configures a distributed logical router (DLR or DR) to send data packets with destinations outside the logical network from sources belonging to the logical network to the anycast VTEP IP address.

    Distributed multicast logical router
    39.
    发明授权
    Distributed multicast logical router 有权

    公开(公告)号：US11811545B2

    公开(公告)日：2023-11-07

    申请号：US17129788

    申请日：2020-12-21

    申请人： Nicira, Inc.

    发明人： Sami Boutros ,  Sharath Bhat ,  Jerome Catrouillet ,  Subin Cyriac Mathew ,  Alexander Tessmer

    IPC分类号： H04L12/18 ,  H04L12/761 ,  H04L45/16 ,  H04L45/44 ,  H04L41/0893

    CPC分类号： H04L12/185 ,  H04L12/1886 ,  H04L45/16 ,  H04L41/0893 ,  H04L45/44

    摘要： Some embodiments provide a method for configuring a set of MFEs to implement a distributed multicast logical router and multiple logical switches to process the multicast data messages. The method sends, from a managed forwarding element (MFE) implementing the distributed multicast logical router, a multicast group query to a set of data compute nodes (DCNs) that are logically connected to one of several logical switches and that execute on the same host machine as the managed forwarding element. The method receives multicast group reports from a subset of the set of DCNs and at least one of the multicast group reports specifies a multicast group of interest. The method distributes, to a set of MFEs executing on other host machines, a summarized multicast group report specifying a set of multicast groups of interest to the first MFE (i.e., multicast groups that the first MFE participates in).