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    Split-horizon packet forwarding in a multi-home PBB-EVPN network
    22.
    发明授权
    Split-horizon packet forwarding in a multi-home PBB-EVPN network 有权

    公开(公告)号：US10148566B2

    公开(公告)日：2018-12-04

    申请号：US15055061

    申请日：2016-02-26

    Applicant: Juniper Networks, Inc.

    Inventor： Babu Singarayan ,  Tapraj Singh ,  Vikas Vidyalal Patel ,  Swamy Sadashivaiah Renu Kananda

    IPC: H04L12/721 ,  H04L12/46 ,  H04L12/707

    Abstract: Techniques are described to provide split-horizon packet forwarding so as to ensure that packets from the customer network that are injected into the provider backbone bridging Ethernet Virtual Private Network (PBB-EVPN) by one of the provider edge (PE) devices of the multi-homed Ethernet segment are not forwarded back toward the customer network by a different PE device connected to the same multi-homed Ethernet segment. For example, a method may comprise receiving a packet via a core-facing interface of a first PE device, determining the Ethernet segment associated with the PE devices by a lookup operation based on keys of the packet; in response to determining the Ethernet segment, supplanting the core-facing interface of the first PE device with a virtual interface associated with the keys, and forwarding the packet to a second CE device without forwarding the received packet back to the Ethernet segment associated with the first PE device.

    Forwarding detection of an aggregated interface
    24.
    发明授权
    Forwarding detection of an aggregated interface 有权

    公开(公告)号：US11283672B2

    公开(公告)日：2022-03-22

    申请号：US15989961

    申请日：2018-05-25

    Applicant: Juniper Networks, Inc.

    Inventor： Gaurav Ganeriwal ,  Sharmila Koppula ,  Babu Singarayan ,  Vishnu Janardhanan S ,  Sayantani Gupta

    IPC: H04L12/24 ,  H04L12/26 ,  H04L41/0654 ,  H04L43/0811 ,  H04L43/10

    Abstract: The techniques describe detecting connectivity failure of an aggregated interface. To monitor connectivity of the aggregated interface, a packet processor of a plurality of packet processors is set as a session master responsible for managing an active forwarding plane connectivity detection session with a peer session master node. The other local packet processors of the virtual network node are selected as session standby nodes that each have a passive forwarding plane connectivity detection session running to the peer session master node. If a session master node goes down (i.e., by link or node failure), one of the local session standby nodes may detect the failure and is set as a new session master node by activating its passive session having the same session parameters.

    Utilizing upstream routing of multicast traffic from redundant multicast sources to increase multicast resiliency and availability
    25.
    发明授权
    Utilizing upstream routing of multicast traffic from redundant multicast sources to increase multicast resiliency and availability 有权

    公开(公告)号：US10855520B1

    公开(公告)日：2020-12-01

    申请号：US16363422

    申请日：2019-03-25

    Applicant: Juniper Networks, Inc.

    Inventor： Sunanda Kommula ,  Babu Singarayan ,  Jonathan C. Barth

    IPC: H04L12/24 ,  H04L12/703 ,  H04L12/18

    Abstract: A network device selects a primary source for multicast traffic and a secondary source for the multicast traffic, where the multicast traffic is provided to endpoint devices communicating with a network, and where the primary source and the secondary source are redundant sources. The network device provides a first join request that includes information that causes a primary path to be provided from the primary source through the network. The network device provides a second join request that includes information that causes a secondary path to be provided from the secondary source through the network. The network device receives the multicast traffic from the primary source via the primary path and the secondary source via the secondary path, and provides the multicast traffic received from the primary source to the endpoint devices. The network device prevents the multicast traffic received from the secondary source from reaching the endpoint devices.

    CORE ISOLATION FOR LOGICAL TUNNELS STITCHING MULTI-HOMED EVPN AND L2 CIRCUIT
    26.
    发明申请
    CORE ISOLATION FOR LOGICAL TUNNELS STITCHING MULTI-HOMED EVPN AND L2 CIRCUIT 审中-公开

    公开(公告)号：US20200213182A1

    公开(公告)日：2020-07-02

    申请号：US16235230

    申请日：2018-12-28

    Applicant: Juniper Networks, Inc.

    Inventor： Channasangamesh S. Hugar ,  Babu Singarayan ,  Sharmila Koppula ,  Soumyodeep Joarder ,  Sudhin Jacob

    IPC: H04L12/24 ,  H04L12/46 ,  H04L12/751

    Abstract: Techniques are described to provide layer 2 (L2) circuit failover in the event connectivity to an Ethernet Virtual Private Network (EVPN) instance is lost. For example, if one of multi-homed provider edge (PE) devices loses connectivity to the EVPN instance, the PE device may mark its customer-facing interface as down and propagate the interface status to the access node such that the access node may update its routing information to switch L2 circuits to another one of the multi-homed PE devices having reachability to the EVPN instance. In some examples, the plurality of PE devices may further implement Connectivity Fault Management (CFM) techniques to propagate the interface status to the access node such that the access node may update its forwarding information to send traffic on a different L2 circuit to another one of the multi-homed PE devices having reachability to the EVPN instance.

    TARGETED SELECTION OF CASCADE PORTS
    29.
    发明申请
    TARGETED SELECTION OF CASCADE PORTS 审中-公开

    公开(公告)号：US20190296965A1

    公开(公告)日：2019-09-26

    申请号：US15933902

    申请日：2018-03-23

    Applicant: Juniper Networks, Inc.

    Inventor： Vishnu Janardhanan S ,  Babu Singarayan ,  Puneet Kedia ,  Pratibha Goel

    IPC: H04L12/24 ,  H04L12/911

    Abstract: Techniques are described for providing targeted selection of cascade ports of an aggregation device. In one example, the disclosed techniques enable dynamic assignment of active and backup cascade ports of an aggregation device for each extended port of satellite devices. In this example, rather than allocating resources for each of the extended ports of the satellite devices on all of the cascade ports of the aggregation device, the aggregation device instead allocates resources for each of the extended port only on the assigned active and backup cascade ports for the respective one of the extended ports of the satellite devices. The techniques are also described for providing traffic steering to a backup cascade port in the event the assigned active cascade port is unreachable, and, if the cascade port remains unreachable for a specified duration, the aggregation device may assign new active and backup cascade ports for the extended port.

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