公开(公告)号：US09781032B1

公开(公告)日：2017-10-03

申请号：US15207316

申请日：2016-07-11

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Wen Lin ,  Satya Ranjan Mohanty ,  John E. Drake

IPC: H04L12/723 ,  H04L12/721

CPC classification number: H04L45/66 ,  H04L45/50

Abstract: In general, techniques are described for configuring a provider edge (PE) network device of an Ethernet virtual private network (EVPN) to use a common traffic engineering label (e.g., MPLS label) for different EVPN route types associated with the same EVPN. In some examples, the techniques include sending a first layer three (L3) control plane message that indicates a label-switched network protocol label that corresponds to a first EVPN route type, wherein the first L3 control plane message indicates that a first PE network device is reachable in the L2 segment. The techniques may include performing L2 address learning to determine at least one L2 address associated with the layer two segment of the EVPN. The techniques may include sending a second L3 control plane message that indicates the same label included in the first L3 control plane message corresponds to a second EVPN route type.

公开(公告)号：US20140078884A1

公开(公告)日：2014-03-20

申请号：US14082928

申请日：2013-11-18

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Manish Gupta

IPC: H04L12/939

CPC classification number: H04L45/28 ,  H04L5/0085 ,  H04L41/0663 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/24 ,  H04L49/557

Abstract: An example network system includes a layer two (L2) device and a layer three (L3) device. The L2 device includes a control unit is configured to determine a preferred network path from a first L2 network in which the L2 device resides to an intermediate L3 network in which the L3 device resides that couples the first L2 network to a second L2 network having a second L2 device. The control unit includes a management endpoint (MEP) module. The MEP module executes an operations, administration, and management (OAM) protocol to monitor the first L2 network and output an L2 frame in accordance with the OAM protocol to the L3 device to notify the L3 device that it is within the preferred network path. A MEP module of the L3 device executes an OAM protocol that outputs L2 frames to the L2 device indicating the status of the L3 network.

Abstract translation: 示例性网络系统包括第二层（L2）设备和第三层（L3）设备。 L2设备包括控制单元，被配置为确定从其中L2设备驻留的第一L2网络到L3设备驻留的中间L3网络的优选网络路由，其将第一L2网络耦合到具有第二L2网络的第二L2网络， 第二L2设备。 控制单元包括管理端点（MEP）模块。 MEP模块执行操作，管理和管理（OAM）协议来监控第一个L2网络，并根据OAM协议将L2帧输出到L3设备，以通知L3设备它在优选的网络路径内。 L3设备的MEP模块执行向L2设备输出L2帧的OAM协议，指示L3网络的状态。

公开(公告)号：US09391885B1

公开(公告)日：2016-07-12

申请号：US14019387

申请日：2013-09-05

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Wen Lin ,  Satya Ranjan Mohanty ,  John E. Drake

IPC: H04L12/723 ,  H04L12/721

CPC classification number: H04L45/66 ,  H04L45/50

Abstract: In general, techniques are described for configuring a provider edge (PE) network device of an Ethernet virtual private network (EVPN) to use a common traffic engineering label (e.g., MPLS label) for different EVPN route types associated with the same EVPN. In some examples, the techniques include sending a first layer three (L3) control plane message that indicates a label-switched network protocol label that corresponds to a first EVPN route type, wherein the first L3 control plane message indicates that a first PE network device is reachable in the L2 segment. The techniques may include performing L2 address learning to determine at least one L2 address associated with the layer two segment of the EVPN. The techniques may include sending a second L3 control plane message that indicates the same label included in the first L3 control plane message corresponds to a second EVPN route type.

Abstract translation: 一般来说，描述了用于配置以太网虚拟专用网（EVPN）的提供商边缘（PE）网络设备以对与相同EVPN相关联的不同EVPN路由类型使用公共流量工程标签（例如，MPLS标签）的技术。 在一些示例中，所述技术包括：发送指示对应于第一EVPN路由类型的标签交换网络协议标签的第一层三（L3）控制平面消息，其中所述第一L3控制平面消息指示第一PE网络设备 在L2段可达。 这些技术可以包括执行L2地址学习以确定与EVPN的第二层段相关联的至少一个L2地址。 这些技术可以包括发送指示包括在第一L3控制平面消息中的相同标签对应于第二EVPN路由类型的第二L3控制平面消息。

公开(公告)号：US20160065451A1

公开(公告)日：2016-03-03

申请号：US14934346

申请日：2015-11-06

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Manish Gupta

IPC: H04L12/703 ,  H04L5/00 ,  H04L12/26

CPC classification number: H04L45/28 ,  H04L5/0085 ,  H04L41/0663 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/24 ,  H04L49/557

Abstract: An example network system includes a layer two (L2) device and a layer three (L3) device. The L2 device includes a control unit is configured to determine a preferred network path from a first L2 network in which the L2 device resides to an intermediate L3 network in which the L3 device resides that couples the first L2 network to a second L2 network having a second L2 device. The control unit includes a management endpoint (MEP) module. The MEP module executes an operations, administration, and management (OAM) protocol to monitor the first L2 network and output an L2 frame in accordance with the OAM protocol to the L3 device to notify the L3 device that it is within the preferred network path. A MEP module of the L3 device executes an OAM protocol that outputs L2 frames to the L2 device indicating the status of the L3 network.

Abstract translation: 示例性网络系统包括第二层（L2）设备和第三层（L3）设备。 L2设备包括控制单元，被配置为确定从其中L2设备驻留的第一L2网络到L3设备驻留的中间L3网络的优选网络路由，其将第一L2网络耦合到具有第二L2网络的第二L2网络， 第二L2设备。 控制单元包括管理端点（MEP）模块。 MEP模块执行操作，管理和管理（OAM）协议来监控第一个L2网络，并根据OAM协议将L2帧输出到L3设备，以通知L3设备它在优选的网络路径内。 L3设备的MEP模块执行向L2设备输出L2帧的OAM协议，指示L3网络的状态。

公开(公告)号：US09979632B2

公开(公告)日：2018-05-22

申请号：US15000803

申请日：2016-01-19

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Sunesh Rustagi

IPC: H04L12/707 ,  H04L12/721 ,  H04L12/715 ,  H04L12/703 ,  H04L12/723 ,  H04L12/437 ,  H04L12/46

CPC classification number: H04L45/22 ,  H04L12/437 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66

Abstract: Data traffic loss in a an Ethernet Ring that is multihomed, in an active-standby manner, to a VPLS transport network (such as a Border Gateway Protocol (BGP) multihomed Ethernet Ring, an MC-LAG multihomed Ethernet Ring, or some other type of active-standby multihomed Ethernet Ring, etc.) (ring) is avoided. The exemplary multihomed ring running Ethernet Ring Protection (ERP) protocol includes a Ring Protection Link (RPL), a first node and a second node linked with a designated border router and a standby border router of the network, respectively. The data traffic loss in the multihomed ring is avoided by (i) receiving an indication that the link between the first node and the designated border router has failed; and (ii) invoking, responsive to the received indication, an ERP Media Access Control (MAC)-flush in the ring, even in the absence of a failed link in the ring and without activating the specified RPL. The ERP MAC-flush causes subsequent data packets from each of the plurality of nodes in the ring to be forwarded to the standby border router via the second node.

公开(公告)号：US09900245B2

公开(公告)日：2018-02-20

申请号：US14934346

申请日：2015-11-06

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Manish Gupta

IPC: H04L12/703 ,  H04L12/26 ,  H04L12/707 ,  H04L12/939 ,  H04L5/00 ,  H04L12/24

CPC classification number: H04L45/28 ,  H04L5/0085 ,  H04L41/0663 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/24 ,  H04L49/557

Abstract: An example network system includes a layer two (L2) device and a layer three (L3) device. The L2 device includes a control unit is configured to determine a preferred network path from a first L2 network in which the L2 device resides to an intermediate L3 network in which the L3 device resides that couples the first L2 network to a second L2 network having a second L2 device. The control unit includes a management endpoint (MEP) module. The MEP module executes an operations, administration, and management (OAM) protocol to monitor the first L2 network and output an L2 frame in accordance with the OAM protocol to the L3 device to notify the L3 device that it is within the preferred network path. A MEP module of the L3 device executes an OAM protocol that outputs L2 frames to the L2 device indicating the status of the L3 network.

公开(公告)号：US20160134517A1

公开(公告)日：2016-05-12

申请号：US15000803

申请日：2016-01-19

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Sunesh Rustagi

IPC: H04L12/707 ,  H04L12/46 ,  H04L12/437 ,  H04L12/723 ,  H04L12/721

CPC classification number: H04L45/22 ,  H04L12/437 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/28 ,  H04L45/50 ,  H04L45/66

Abstract: Data traffic loss in a an Ethernet Ring that is multihomed, in an active-standby manner, to a VPLS transport network (such as a Border Gateway Protocol (BGP) multihomed Ethernet Ring, an MC-LAG multihomed Ethernet Ring, or some other type of active-standby multihomed Ethernet Ring, etc.) (ring) is avoided. The exemplary multihomed ring running Ethernet Ring Protection (ERP) protocol includes a Ring Protection Link (RPL), a first node and a second node linked with a designated border router and a standby border router of the network, respectively. The data traffic loss in the multihomed ring is avoided by (i) receiving an indication that the link between the first node and the designated border router has failed; and (ii) invoking, responsive to the received indication, an ERP Media Access Control (MAC)-flush in the ring, even in the absence of a failed link in the ring and without activating the specified RPL. The ERP MAC-flush causes subsequent data packets from each of the plurality of nodes in the ring to be forwarded to the standby border router via the second node.

Abstract translation: 以主动备用方式多呼叫到VPLS传输网络（例如边界网关协议（BGP）多宿主以太网环，MC-LAG多宿主以太网环或其他类型的以太网环路中的数据流量丢失 主动待机多宿主以太网环等）（环）。 运行以太环网保护（ERP）协议的示例性多主机环路分别包括与指定的边界路由器和网络的备用边界路由器链接的环保护链路（RPL），第一节点和第二节点。 通过（i）接收到第一节点和指定的边界路由器之间的链路已经失败的指示来避免多主环中的数据业务丢失; 以及（ii）响应于所接收的指示，调用在环中的ERP媒体访问控制（MAC）冲洗，即使在环中没有故障链路并且不激活指定的RPL。 ERP MAC刷新使来自环中的多个节点的后续数据分组经由第二节点转发到备用边界路由器。

公开(公告)号：US09185055B2

公开(公告)日：2015-11-10

申请号：US14082928

申请日：2013-11-18

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Manish Gupta

IPC: H04L12/939 ,  H04L12/26 ,  H04L12/707 ,  H04L12/24

CPC classification number: H04L45/28 ,  H04L5/0085 ,  H04L41/0663 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/24 ,  H04L49/557

Abstract: An example network system includes a layer two (L2) device and a layer three (L3) device. The L2 device includes a control unit is configured to determine a preferred network path from a first L2 network in which the L2 device resides to an intermediate L3 network in which the L3 device resides that couples the first L2 network to a second L2 network having a second L2 device. The control unit includes a management endpoint (MEP) module. The MEP module executes an operations, administration, and management (OAM) protocol to monitor the first L2 network and output an L2 frame in accordance with the OAM protocol to the L3 device to notify the L3 device that it is within the preferred network path. A MEP module of the L3 device executes an OAM protocol that outputs L2 frames to the L2 device indicating the status of the L3 network.

Abstract translation: 示例性网络系统包括第二层（L2）设备和第三层（L3）设备。 L2设备包括控制单元，被配置为确定从其中L2设备驻留的第一L2网络到L3设备驻留的中间L3网络的优选网络路由，其将第一L2网络耦合到具有第二L2网络的第二L2网络， 第二L2设备。 控制单元包括管理端点（MEP）模块。 MEP模块执行操作，管理和管理（OAM）协议来监控第一个L2网络，并将根据OAM协议的L2帧输出到L3设备，以通知L3设备它在优选的网络路径内。 L3设备的MEP模块执行向L2设备输出L2帧的OAM协议，指示L3网络的状态。

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：US09019973B1

公开(公告)日：2015-04-28

申请号：US13631521

申请日：2012-09-28

Applicant: Juniper Networks, Inc.

Inventor： Pankaj Shukla ,  Wen Lin

IPC: H04L12/28 ,  H04L12/751 ,  H04L12/721

CPC classification number: H04L45/02 ,  H04L45/66

Abstract: A first network device receives a control message at an interface from a second network device, wherein the first network device and the second network device use a multipoint service that provides layer two (L2) connectivity between L2 networks. The control message specifies one or more L2 addresses of customer network devices that are provided connectivity to an autonomous system by the second network device, wherein the control message identifies the L2 addresses as static L2 addresses that are to be persistently maintained at the first network device as reachable by the interface. In response to receiving the control message and by the first network device, the first network device stores the L2 addresses as persistently maintained static L2 addresses being reachable by the interface at which the control message was received.

Abstract translation: 第一网络设备在来自第二网络设备的接口处接收控制消息，其中第一网络设备和第二网络设备使用提供L2网络之间的第二层（L2）连接的多点服务。 所述控制消息指定由所述第二网络设备提供到与自主系统连接的客户网络设备的一个或多个L2地址，其中所述控制消息将所述L2地址标识为要在所述第一网络设备上持续维护的静态L2地址 由界面可达。 响应于接收到控制消息，并且由第一网络设备，第一网络设备将L2地址存储为由接收控制消息的接口可达到的持久维护的静态L2地址。