公开(公告)号：US09628409B1

公开(公告)日：2017-04-18

申请号：US14644683

申请日：2015-03-11

Applicant: Juniper Networks, Inc.

Inventor： Venkatesan Yuvaraj ,  Sunesh Rustagi ,  Shrinivasa Kini ,  Tapraj Singh ,  Ragupathi J

IPC: H04L12/931 ,  H04L29/06

CPC classification number: H04L49/201

Abstract: Techniques are described for supporting designated forwarder election for a multi-homed Ethernet virtual private network (EVPN) data center interconnect (DCI) between multiple data centers by leveraging and utilizing adjacency state information learned from a multicast routing protocol that controls multicast distribution within an underlying transport network of a local data center. For example, a set or routers operating to provide a multi-homed EVPN DCI may utilize adjacency state information learned from a Protocol Independent Multicast (PIM) executing within the underlying transport network of a multi-homed data center to facilitate selection of a designated forwarder for the EVPN between the data centers. By leveraging adjacency state information, an enhanced DF election may be automatically performed for the EVPN to facilitate selection of a designated forwarder in a manner that may avoid loss of traffic in situations where a topology event in the underlying transport network of the data center.

公开(公告)号：US09838309B1

公开(公告)日：2017-12-05

申请号：US14733532

申请日：2015-06-08

Applicant: Juniper Networks, Inc.

Inventor： Kaushik Ghosh ,  Ramasamy Ramanathan ,  Anil Lohiya ,  Manoj Sharma ,  Shrinivasa Kini ,  Cunzhi Lu

IPC: H04L12/721 ,  H04L12/741 ,  H04L29/12 ,  H04L12/701 ,  H04L12/723 ,  H04L12/931

CPC classification number: H04L45/66 ,  H04L45/00 ,  H04L45/50 ,  H04L45/74 ,  H04L49/604 ,  H04L61/2015

Abstract: In general, techniques for facilitating a distributed network (L3) subnet by which multiple independent control planes of network devices connected to physically separate L2 networks provide L2 reachability to/from a single L3 subnet. In some examples, a shared L2 network physically situated to connect a plurality of physically separate L2 networks “stitches” the L2 networks together within the respective, independent control planes of switches such that the control planes bridge L2 traffic for a single bridge domain for the separate L2 networks to the shared L2 network and visa-versa. Each of the independent control planes may be configured with a virtual IRB instance associated with the bridge domain and with a common network subnet. Each of the virtual IRBs provides a functionally similar routing interface for the single bridge domain for the separate L2 networks and allows the shared network subnet to be distributed among the independent control planes.

公开(公告)号：US09178816B1

公开(公告)日：2015-11-03

申请号：US14040487

申请日：2013-09-27

Applicant: Juniper Networks, Inc.

Inventor： Deepak Ojha ,  Shrinivasa Kini ,  Pankaj Shukla ,  Manoj Sharma ,  John E. Drake

IPC: H04W8/00 ,  H04L12/741

CPC classification number: H04L12/4641 ,  H04L45/02 ,  H04L45/66 ,  H04L45/74

Abstract: In general, techniques are described for providing control plane messaging in an active-active (or all-active) configuration of a multi-homed EVPN environment. In some examples, the techniques include receiving a control plane message comprising at least one address that identifies that second PE network device. The techniques may include configuring, based at least in part on the control plane message, a forwarding plane of a first PE network device to identify network packets having respective destination addresses that match the at least one address. The techniques may include determining that at least one address of the network packet matches the at least one address that identifies the second PE network device. The techniques may include, responsive to the determination, skipping a decrement of the Time-To-Live (TTL) value of the network packet, and forwarding the network packet to the second PE network device.

Abstract translation: 一般来说，描述了在多宿主EVPN环境的主动（主动）（或全部））配置中提供控制平面消息传递的技术。 在一些示例中，技术包括接收包含标识该第二PE网络设备的至少一个地址的控制平面消息。 这些技术可以包括至少部分地基于控制平面消息配置第一PE网络设备的转发平面，以识别具有与至少一个地址匹配的相应目的地地址的网络分组。 这些技术可以包括确定网络包的至少一个地址与标识第二PE网络设备的至少一个地址匹配。 所述技术可以包括响应于确定，跳过网络分组的生存时间（TTL）值的减少，并且将网络分组转发到第二PE网络设备。

公开(公告)号：US09735983B1

公开(公告)日：2017-08-15

申请号：US14500120

申请日：2014-09-29

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/28 ,  H04L12/46

CPC classification number: H04L12/4675

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

公开(公告)号：US09055000B1

公开(公告)日：2015-06-09

申请号：US13717533

申请日：2012-12-17

Applicant: Juniper Networks, Inc.

Inventor： Kaushik Ghosh ,  Ramasamy Ramanathan ,  Anil Lohiya ,  Manoj Sharma ,  Shrinivasa Kini ,  Cunzhi Lu

IPC: H04L12/56 ,  H04L12/721

CPC classification number: H04L45/66 ,  H04L45/00 ,  H04L45/50 ,  H04L45/74 ,  H04L49/604 ,  H04L61/2015

Abstract: In general, techniques for facilitating a distributed network (L3) subnet by which multiple independent control planes of network devices connected to physically separate L2 networks provide L2 reachability to/from a single L3 subnet. In some examples, a shared L2 network physically situated to connect a plurality of physically separate L2 networks “stitches” the L2 networks together within the respective, independent control planes of switches such that the control planes bridge L2 traffic for a single bridge domain for the separate L2 networks to the shared L2 network and visa-versa. Each of the independent control planes may be configured with a virtual IRB instance associated with the bridge domain and with a common network subnet. Each of the virtual IRBs provides a functionally similar routing interface for the single bridge domain for the separate L2 networks and allows the shared network subnet to be distributed among the independent control planes.

Abstract translation: 通常，用于促进分布式网络（L3）子网的技术通过其连接到物理上分离的L2网络的网络设备的多个独立控制平面提供到/来自单个L3子网的L2可达性。 在一些示例中，物理地定位以连接多个物理上分离的L2网络的共享L2网络将L2网络在交换机的相应的独立控制平面内“联结”在一起，使得控制平面桥接用于单桥域的L2业务 将L2网络分离到共享的L2网络，反之亦然。 每个独立控制平面可以配置有与网桥域相关联的虚拟IRB实例以及公共网络子网。 每个虚拟IRB为单独的L2网络的单桥域提供功能相似的路由接口，并允许共享网络子网在独立控制平面之间分布。

公开(公告)号：US10050809B2

公开(公告)日：2018-08-14

申请号：US15676181

申请日：2017-08-14

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/28 ,  H04L12/46

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

公开(公告)号：US20180034667A1

公开(公告)日：2018-02-01

申请号：US15676181

申请日：2017-08-14

Applicant: Juniper Networks, Inc.

Inventor： Manoj Sharma ,  Shrinivasa Kini ,  Siddharth A. Tuli ,  Tapraj Singh ,  Sunesh Rustagi

IPC: H04L12/46

CPC classification number: H04L12/4675

Abstract: A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.