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    EGRESS NODE PROTECTION IN EVPN ALL-ACTIVE TOPOLOGY
    2.
    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
    3.
    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。

    Reducing traffic loss during link failure in an ethernet virtual private network multihoming topology
    6.
    发明授权
    Reducing traffic loss during link failure in an ethernet virtual private network multihoming topology 有权

    公开(公告)号：US10771317B1

    公开(公告)日：2020-09-08

    申请号：US16189408

    申请日：2018-11-13

    Applicant: Juniper Networks, Inc.

    Inventor： Soumyodeep Joarder ,  Kapil Arora ,  Sunil Kumar Malali ,  Vikram Nagarajan

    IPC: H04L12/24 ,  H04L12/703 ,  H04L12/911 ,  H04L12/931 ,  H04L12/851

    Abstract: A first network device permits a bidirectional forwarding detection (BFD) session with a second network device. The first network device is a designated forwarder for a third network device, a first link is provided between the first network device and the third network device, the second network device is a backup designated forwarder for the third network device, a second link is provided between the second network device and the third network device. The first network device detects a link failure associated with the first link between the first network device and the third network device, and provides, via the BFD session, a BFD message to the second network device. The BFD message includes an indication of the link failure, and the BFD message is to cause the second network device to be a new designated forwarder for the third network device.

    Replicating multicast state information between multi-homed EVPN routing devices
    8.
    发明授权
    Replicating multicast state information between multi-homed EVPN routing devices 有权

    公开(公告)号：US10033539B1

    公开(公告)日：2018-07-24

    申请号：US15087757

    申请日：2016-03-31

    Applicant: Juniper Networks, Inc.

    Inventor： Vikram Nagarajan ,  Sachin S. Natu ,  Kapil Arora ,  Sunil Kumar Malali ,  Goutham Patil R ,  Raj Chetan Boddireddy

    IPC: H04L12/18 ,  H04L12/46 ,  H04L29/12 ,  H04L12/24

    Abstract: In one example, a first routing device of an Ethernet virtual private network (EVPN) is multihomed to a customer edge (CE) routing device with a second routing device. The first routing device includes one or more network interfaces configured to send and receive packets. The first routing device also includes one or more processors configured to receive, via the one or more network interfaces, a first packet from the CE routing device including multicast join information, update multicast state information of the first routing device using the multicast join information from the first packet, and send, via the one or more network interfaces, a second packet including data representative of the multicast join information to the second routing device to synchronize multicast state information of the second routing device with the multicast state information of the first routing device.

    MASS MAC WITHDRAWAL FOR EVPN-DCI USING VIRTUAL ESI
    9.
    发明申请
    MASS MAC WITHDRAWAL FOR EVPN-DCI USING VIRTUAL ESI 有权

    公开(公告)号：US20170288970A1

    公开(公告)日：2017-10-05

    申请号：US15083732

    申请日：2016-03-29

    Applicant: Juniper Networks, Inc.

    Inventor： Wen Lin ,  John E. Drake ,  Sunil Kumar Malali ,  Kapil Arora ,  Vikram Nagarajan

    IPC: H04L12/24

    CPC classification number: H04L41/12 ,  H04L12/46 ,  H04L12/4625 ,  H04L45/02 ,  H04L45/54 ,  H04L45/64 ,  H04L45/66 ,  H04L61/2084 ,  H04L61/6004 ,  H04L61/6022

    Abstract: The techniques described are directed to providing mass withdrawal of media access control (MAC) routes for network devices in an Ethernet virtual private network data center interconnect (EVPN DCI). MAC routes to reach the learned MAC addresses are stored in routing tables with corresponding top-of-rack Ethernet segment identifier (TOR-ESI) values that represent the Ethernet segments from where the MAC addresses were learned. A provider edge (PE) network device may configure and advertise a virtual Ethernet segment identifier (vESI) that includes a plurality of TOR-ESI values. As Ethernet segments of the data center become unavailable, the corresponding TOR-ESI values may be withdrawn from the vESI to form an updated vESI. In this way, MAC routes having a TOR-ESI value that was withdrawn from the vESI may be removed from the routing tables in each of the network devices.

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