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    EGRESS NODE PROTECTION IN EVPN ALL-ACTIVE TOPOLOGY
    13.
    发明申请
    EGRESS NODE PROTECTION IN EVPN ALL-ACTIVE TOPOLOGY 审中-公开

    公开(公告)号：US20170093611A1

    公开(公告)日：2017-03-30

    申请号：US14869806

    申请日：2015-09-29

    Applicant: JUNIPER NETWORKS, INC.

    Inventor： Kapil Arora ,  Nitin Singh ,  Sunil Kumar Malali

    IPC: H04L12/24 ,  H04L12/707 ,  H04L12/751

    CPC classification number: H04L41/0654 ,  H04L12/4625 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66

    Abstract: In general, techniques enable an intermediate router to perform node protection for one or more other PE routers operably coupled to the intermediate router in active-active mode in an EVPN. The techniques may include configuring the intermediate router, which is positioned within an a service provider network between a remote provide edge router and at least two provider edge (PE) routers operating in active-active mode in an Ethernet Virtual Private Network (EVPN), to operate in a passive mode in which the intermediate router detects Ethernet Auto-Discovery (AD) routes without performing layer two (L2) address learning for the EVPN. The techniques may include installing a primary route to a protected router and a backup route from the intermediate router to a PE router other than the protected router, and in response to a link failure, forwarding network traffic using the backup route without requiring reprogramming the forwarding unit.

    EGRESS PROTECTION FOR BUM TRAFFIC WITH LINK FAILURES IN EVPN
    14.
    发明申请
    EGRESS PROTECTION FOR BUM TRAFFIC WITH LINK FAILURES IN EVPN 审中-公开
    用于在EVPN中连接故障的BUM交通的EGR保护

    公开(公告)号：US20170063600A1

    公开(公告)日：2017-03-02

    申请号：US14841461

    申请日：2015-08-31

    Applicant: Juniper Networks, Inc.

    Inventor： Nitin Singh ,  Kapil Arora ,  Sunil Kumar Malali

    IPC: H04L12/24 ,  H04L12/721 ,  H04L12/18

    CPC classification number: H04L45/66 ,  H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/26 ,  H04L45/28 ,  H04L45/50

    Abstract: In some examples, a method includes receiving, by a first provider edge (PE) network device, an egress protection label that is advertised by a second PE network device, wherein each of the first and second PE network devices are included in an Ethernet segment, wherein the first PE network device is a designated forwarder for BUM network packets in the Ethernet segment, and wherein a CE network device is multi-homed to the first and second PE network devices; in response to detecting a link failure, configuring forwarding information of the first PE network device to apply the egress protection label to the BUM network packets received by the first PE network device and forward the BUM network packets to the second PE network device; and in response to receiving the BUM network packets, forwarding the BUM network packets with the egress protection label to the second PE network device.

    Abstract translation: 在一些示例中，一种方法包括由第一提供商边缘（PE）网络设备接收由第二PE网络设备发布的出口保护标签，其中第一和第二PE网络设备中的每一个包括在以太网段 其中，所述第一PE网络设备是所述以太网段中的BUM网络分组的指定转发器，并且其中CE网络设备被多归属于所述第一和第二PE网络设备; 响应于检测到链路故障，配置第一PE网络设备的转发信息，将出口保护标签应用于第一PE网络设备收到的BUM网络报文，并将BUM网络报文转发给第二PE网络设备; 并且响应于接收到BUM网络分组，将具有出口保护标签的BUM网络分组转发到第二PE网络设备。

    Node protection for bum traffic for multi-homed node failure
    15.
    发明授权
    Node protection for bum traffic for multi-homed node failure 有权

    公开(公告)号：US11349749B2

    公开(公告)日：2022-05-31

    申请号：US16357136

    申请日：2019-03-18

    Applicant: Juniper Networks, Inc.

    Inventor： Vikram Nagarajan ,  Kapil Arora ,  Robert W. Kebler ,  Princy T. Elizabeth ,  Ramesh Kandula ,  Soumyodeep Joarder

    IPC: H04L12/703 ,  H04L12/707 ,  H04L45/28 ,  H04L12/46 ,  H04L45/00 ,  H04L45/64

    Abstract: Techniques are described for facilitating node protection for Broadcast, unknown Unicast, and Multicast (BUM) traffic for a multi-homed node failure. For example, each VTEP (e.g., PE device) may advertise a protected VTEP address that indicates an IP address of a remote PE device that is to be protected in the event of a node failure. In the event a multi-homed PE device fails, the ingress PE device sends a BUM packet including the protected VTEP address for the failed node. When an egress PE device receives the BUM packet, the egress PE device determines whether the BUM packet includes the protected VTEP address and whether the egress PE device is operating as a backup designated forwarder (DF). If the BUM packet includes the protected VTEP address and the egress PE device is a backup DF, the egress PE device forwards the BUM traffic to the ESI.

    Multicast load balancing in multihoming EVPN networks
    19.
    发明授权
    Multicast load balancing in multihoming EVPN networks 有权

    公开(公告)号：US10193812B2

    公开(公告)日：2019-01-29

    申请号：US15655210

    申请日：2017-07-20

    Applicant: Juniper Networks, Inc.

    Inventor： Vikram Nagarajan ,  Wen Lin ,  Robert W. Kebler ,  Princy T. Elizabeth ,  Kapil Arora

    IPC: H04L12/46 ,  H04L12/801 ,  H04L29/06 ,  G06F9/54 ,  H04L12/803 ,  H04L12/18

    Abstract: In general, techniques are described for load-balancing responsibility for forwarding of multicast traffic into an active-active Ethernet segment between two or more multi-homed provider edge (PE) routers in an Ethernet Virtual Private Network (EVPN). In one example, a PE router may receive an Internet Group Management Protocol (IGMP) join report for a multicast group. The PE router may send join synch routes used to synchronize the join report for the multicast group across the Ethernet segment. The PE router may deterministically determine whether the PE router is configured to be an elected multicast forwarder for one of a plurality of multicast groups. If the PE router is elected a multicast forwarder, the PE router may configure a forwarding state of the PE router to ignore a designated forwarder calculation and to forward the multicast traffic into the Ethernet segment regardless of whether the PE router is a designated forwarder.

    Synchronizing multicast state between multi-homed routers in an Ethernet virtual private network
    20.
    发明授权
    Synchronizing multicast state between multi-homed routers in an Ethernet virtual private network 有权

    公开(公告)号：US10142239B2

    公开(公告)日：2018-11-27

    申请号：US15444005

    申请日：2017-02-27

    Applicant: Juniper Networks, Inc.

    Inventor： Vikram Nagarajan ,  Levinh Hoang ,  John E. Drake ,  Kapil Arora ,  Princy T. Elizabeth

    IPC: H04L12/28 ,  H04L12/801 ,  H04L12/761 ,  H04L12/24 ,  H04L12/725

    Abstract: Techniques are disclosed for handling withdrawals of Border Gateway Protocol (BGP) join synch routes used to synchronize multicast group join requests. In one example, a first provider edge (PE) router of a plurality of PE routers on an Ethernet segment of an Ethernet Virtual Private Network (EVPN) receives, from a second PE router, a withdrawal of a BGP join synch route. In response, the first PE router determines whether a disruption event or a multicast state timeout event at the second PE router caused the withdrawal. If the disruption event caused the withdrawal, the first PE router retains a multicast state for the multicast group and forwards multicast traffic for the multicast group to a customer edge (CE) router multi-homed to the plurality of the PE routers. If the multicast state timeout event caused the withdrawal, the first PE router deletes the multicast state and stops forwarding the multicast traffic.

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