公开(公告)号：US20160191374A1

公开(公告)日：2016-06-30

申请号：US14587839

申请日：2014-12-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Anshu Verma ,  Sudha Madhavi Yeevani ,  Manoj Sharma ,  Hassan C. Hosseini ,  Prasantha Kumar Gudipati

IPC: H04L12/707 ,  H04L12/721 ,  H04L12/709 ,  H04L12/24 ,  H04L12/46 ,  H04L12/703 ,  H04L12/723

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/00 ,  H04L41/0654 ,  H04L45/24 ,  H04L45/245 ,  H04L45/28

Abstract: Techniques are described for providing fast convergence in the event of a link failure in an all-active multi-homed Ethernet virtual private network. A provide edge (PE) network device may pre-configure an interface next hop and secondary next hops. The secondary next hops may be logical links to other PE network devices in the same Ethernet segment. In the event of a link failure in the interface next hop between the PE network device and a customer edge (CE) network device, the PE network device may be configured to forward data traffic to the CE network device using the secondary next hops. In the event of a link failure between the PE network device and a core network, the PE network device may be configured to send an out-of-service message to the CE network device that instructs the CE network device to stop sending traffic to the PE network device.

Abstract translation: 描述了在所有活动的多宿主以太网虚拟专用网络中的链路故障的情况下提供快速收敛的技术。 提供边缘（PE）网络设备可以预先配置接口下一跳和次级下一跳。 次级下一跳可以是到相同以太网段中的其他PE网络设备的逻辑链路。 在PE网络设备和客户端（CE）网络设备之间的接口下一跳链路故障的情况下，PE网络设备可以被配置为使用次级下一跳将数据业务转发到CE网络设备。 在PE网络设备与核心网络发生链路故障的情况下，可以将PE网络设备配置为向CE网络设备发送失效消息，指示CE网络设备停止向 PE网络设备。

公开(公告)号：US20180287990A1

公开(公告)日：2018-10-04

申请号：US15997214

申请日：2018-06-04

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh ,  Wen Lin ,  Hassan C. Hosseini

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/721 ,  H04L12/751 ,  H04L12/723 ,  H04L12/66

Abstract: A network device is configured to provide, via an Ethernet segment with a customer network, active-active multi-homing L2 virtual bridge connectivity to the customer network using an EVPN instance (EVI) and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVI; to receive, from a peer PE device of the EVPN instance, an EVPN route comprising an L2-L3 binding for a customer device of the customer network and associating the L2-L3 binding with the Ethernet segment, the L2-L3 binding comprising an L2 and an L3 address assigned to the customer device, wherein the peer PE device provides, with the network device and via the Ethernet segment, active-active multi-homing L2 virtual bridge connectivity to the customer network; and to forward, via the Ethernet segment and based at least on the L2-L3 binding received from the peer PE device, an L3 packet to the customer device.

公开(公告)号：US09929940B2

公开(公告)日：2018-03-27

申请号：US14674569

申请日：2015-03-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Ryan Bickhart ,  Manoj Sharma ,  Hassan C. Hosseini

IPC: H04L12/28 ,  H04L12/707 ,  H04L12/24 ,  H04L12/703 ,  H04L12/46 ,  H04L12/721

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/0663 ,  H04L45/28 ,  H04L45/66 ,  H04L45/70

Abstract: In general, techniques are provided for described herein that extend existing Ethernet Virtual Private Network (EVPN) protocol signaling mechanisms so that local, multi-homing PEs couple to an Ethernet segment can definitively convey their primary/backup designated forwarder (DF) status to any remote PE of the EVPN. In one example, this is accomplished by utilizing a new extended community attribute to each Ethernet A-D per EVI route advertised by each of the multi-homing PEs to specifically carry the advertising PE's primary or backup status. As such, any receiving remote PE need not rely on the arrival of individual MAC routes from a new primary PE and withdrawal of MAC routes from a former primary PE to update its forwarding information.

公开(公告)号：US20160261487A1

公开(公告)日：2016-09-08

申请号：US14674569

申请日：2015-03-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Ryan Bickhart ,  Manoj Sharma ,  Hassan C. Hosseini

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

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/0663 ,  H04L45/28 ,  H04L45/66 ,  H04L45/70

Abstract: In general, techniques are provided for described herein that extend existing Ethernet Virtual Private Network (EVPN) protocol signaling mechanisms so that local, multi-homing PEs couple to an Ethernet segment can definitively convey their primary/backup designated forwarder (DF) status to any remote PE of the EVPN. In one example, this is accomplished by utilizing a new extended community attribute to each Ethernet A-D per EVI route advertised by each of the multi-homing PEs to specifically carry the advertising PE's primary or backup status. As such, any receiving remote PE need not rely on the arrival of individual MAC routes from a new primary PE and withdrawal of MAC routes from a former primary PE to update its forwarding information.

Abstract translation: 通常，提供了本文所述的用于扩展现有以太网虚拟专用网（EVPN）协议信令机制的技术，使得本地多归属PE耦合到以太网段可以将其主/备用指定转发器（DF）状态明确地传达到任何 EVPN的远程PE。 在一个示例中，这是通过对由每个多归属PE通告的每个EVI路由的每个以太网A-D利用新的扩展团体属性来实现的，以专门承载广告PE的主要或备用状态。 因此，任何接收的远程PE不需要依赖于来自新的主PE的各个MAC路由的到达，并且从前一个主PE获取MAC路由以更新其转发信息。

公开(公告)号：US09992154B2

公开(公告)日：2018-06-05

申请号：US15198948

申请日：2016-06-30

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh ,  Wen Lin ,  Hassan C. Hosseini

IPC: H04L12/28 ,  H04L29/12 ,  H04L12/721 ,  H04L12/46 ,  H04L12/751 ,  H04L12/723 ,  H04L12/66

CPC classification number: H04L61/103 ,  H04L12/462 ,  H04L12/4625 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/02 ,  H04L45/50 ,  H04L45/66

Abstract: A network device is configured to provide, via an Ethernet segment with a customer network, active-active multi-homing L2 virtual bridge connectivity to the customer network using an EVPN instance (EVI) and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVI; to receive, from a peer PE device of the EVPN instance, an EVPN route comprising an L2-L3 binding for a customer device of the customer network and associating the L2-L3 binding with the Ethernet segment, the L2-L3 binding comprising an L2 and an L3 address assigned to the customer device, wherein the peer PE device provides, with the network device and via the Ethernet segment, active-active multi-homing L2 virtual bridge connectivity to the customer network; and to forward, via the Ethernet segment and based at least on the L2-L3 binding received from the peer PE device, an L3 packet to the customer device.

公开(公告)号：US20180006995A1

公开(公告)日：2018-01-04

申请号：US15198948

申请日：2016-06-30

Applicant: Juniper Networks, Inc.

Inventor： Ryan Bickhart ,  Nitin Singh ,  Wen Lin ,  Hassan C. Hosseini

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/721 ,  H04L12/751 ,  H04L12/723 ,  H04L12/66

CPC classification number: H04L61/103 ,  H04L12/462 ,  H04L12/4625 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/02 ,  H04L45/50 ,  H04L45/66

Abstract: A network device is configured to provide, via an Ethernet segment with a customer network, active-active multi-homing L2 virtual bridge connectivity to the customer network using an EVPN instance (EVI) and L3 routing using an IRB interface that is a L3 routing interface assigned to the EVI; to receive, from a peer PE device of the EVPN instance, an EVPN route comprising an L2-L3 binding for a customer device of the customer network and associating the L2-L3 binding with the Ethernet segment, the L2-L3 binding comprising an L2 and an L3 address assigned to the customer device, wherein the peer PE device provides, with the network device and via the Ethernet segment, active-active multi-homing L2 virtual bridge connectivity to the customer network; and to forward, via the Ethernet segment and based at least on the L2-L3 binding received from the peer PE device, an L3 packet to the customer device.

公开(公告)号：US09787573B2

公开(公告)日：2017-10-10

申请号：US14587839

申请日：2014-12-31

Applicant: Juniper Networks, Inc.

Inventor： Nitin Singh ,  Anshu Verma ,  Sudha Madhavi Yeevani ,  Manoj Sharma ,  Hassan C. Hosseini ,  Prasantha Kumar Gudipati

IPC: H04L1/00 ,  H04L12/707 ,  H04L12/703 ,  H04L12/24 ,  H04L12/46 ,  H04L12/709

CPC classification number: H04L45/22 ,  H04L12/4641 ,  H04L41/00 ,  H04L41/0654 ,  H04L45/24 ,  H04L45/245 ,  H04L45/28

Abstract: Techniques are described for providing fast convergence in the event of a link failure in an all-active multi-homed Ethernet virtual private network. A provide edge (PE) network device may pre-configure an interface next hop and secondary next hops. The secondary next hops may be logical links to other PE network devices in the same Ethernet segment. In the event of a link failure in the interface next hop between the PE network device and a customer edge (CE) network device, the PE network device may be configured to forward data traffic to the CE network device using the secondary next hops. In the event of a link failure between the PE network device and a core network, the PE network device may be configured to send an out-of-service message to the CE network device that instructs the CE network device to stop sending traffic to the PE network device.