公开(公告)号：US08902780B1

公开(公告)日：2014-12-02

申请号：US13627660

申请日：2012-09-26

Applicant: Juniper Networks, Inc.

Inventor： Vikas Hegde ,  Santosh Pallagatti Kotrabasappa ,  Chandrasekar Ramachandran

IPC: H04L12/26 ,  H04L12/723 ,  H04L12/721 ,  H04L12/24 ,  H01L43/10

CPC classification number: H04L45/50 ,  H04L41/0677 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/70

Abstract: Techniques are described for verifying the connectivity status of multiple paths through a computer network. The techniques may be useful in testing the connectivity of label switched paths (LSPs), and particularly useful point-to-multipoint (P2MP) LSPs. In some embodiments, a P2MP label switched path (LSP) ping protocol may be used a first connectivity verification protocol for the P2MP LSP and a Multipoint Bidirectional Forwarding Detection (MP BFD) protocol may be used as a second connectivity verification protocol. In addition, use of the LSP ping protocol for connectivity testing of the P2MP LSP may be used to boot-strap session information for MP BFD sessions with egress devices of the P2MP LSP.

Abstract translation: 描述了用于验证通过计算机网络的多个路径的连接状态的技术。 这些技术可用于测试标签交换路径（LSP）的连接性，特别有用的点对多点（P2MP）LSP。 在一些实施例中，可以使用P2MP标签交换路径（LSP）ping协议用于P2MP LSP的第一连接性验证协议，并且多点双向转发检测（MP BFD）协议可以用作第二连接性验证协议。 另外，使用LSP Ping协议进行P2MP LSP的连通性测试也可以用于引导与BFMP会话的会话信息，用于P2MP LSP的出口设备。

公开(公告)号：US09686381B1

公开(公告)日：2017-06-20

申请号：US14042534

申请日：2013-09-30

Applicant: Juniper Networks, Inc.

Inventor： Ravi Singh ,  Vikas Hegde

IPC: G06F15/16 ,  H04L29/06 ,  H04L12/721 ,  H04L12/723

CPC classification number: H04L69/22 ,  H04L45/50 ,  H04L45/68 ,  H04L67/2814

Abstract: In general, techniques are described for decapsulating and forwarding VPLS frames in a hybrid PE router space. In one example, a method includes sending a first control plane message that includes first configuration information to a first PE router, the first control plane message comprising a request that the VPLS frames include a control word when forwarded to the first PE router. The first PE router may receive from a second PE router a second L3 control plane message that includes second configuration information for forwarding VPLS frames to the second PE router, the second L3 control plane message not comprising a request to include the control word when forwarded to the second PE router. The method may include configuring a forwarding plane of the first PE router to process VPLS frames that are received from the second PE router without processing the VPLS frames to remove the control word.

公开(公告)号：US09614906B1

公开(公告)日：2017-04-04

申请号：US14754016

申请日：2015-06-29

Applicant: Juniper Networks, Inc.

Inventor： Vikas Hegde ,  Santosh Pallagatti Kotrabasappa ,  Chandrasekar Ramachandran

IPC: H04L12/24 ,  H04L29/08 ,  H04L12/26 ,  H04W36/30 ,  H04L12/721 ,  H04L12/761

CPC classification number: H04L67/104 ,  H04L41/0668 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/16 ,  H04L45/28 ,  H04L45/50 ,  H04L45/507 ,  H04L45/64 ,  H04L45/70 ,  H04W36/30

Abstract: An egress network device of a point-to-point (P2P) tunnel can receive an LSP Ping message via the P2P tunnel from an ingress network device of the P2P LSP, wherein the LSP Ping message specifies a label that the egress network device associates with a service provided to the egress network device via the P2P tunnel. In response to receiving the LSP Ping message, the egress network device can store an association between the label and the P2P tunnel. The egress network device also uses a fault detection network protocol session over the P2P tunnel to monitor a state of the P2P tunnel. In response to detecting based on the fault detection network protocol session that the state of the P2P tunnel is down, the egress network device determines the service is unavailable from the ingress network device via the P2P tunnel, and selects a new source to provide the service.

公开(公告)号：US09071514B1

公开(公告)日：2015-06-30

申请号：US13717602

申请日：2012-12-17

Applicant: Juniper Networks, Inc.

Inventor： Vikas Hegde ,  Santosh Pallagatti Kotrabasappa ,  Chandrasekar Ramachandran

IPC: H04L12/24

CPC classification number: H04L67/104 ,  H04L41/0668 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/16 ,  H04L45/28 ,  H04L45/50 ,  H04L45/507 ,  H04L45/64 ,  H04L45/70 ,  H04W36/30

Abstract: An egress network device of a point-to-point (P2P) tunnel can receive an LSP Ping message via the P2P tunnel from an ingress network device of the P2P LSP, wherein the LSP Ping message specifies a label that the egress network device associates with a service provided to the egress network device via the P2P tunnel. In response to receiving the LSP Ping message, the egress network device can store an association between the label and the P2P tunnel. The egress network device also uses a fault detection network protocol session over the P2P tunnel to monitor a state of the P2P tunnel. In response to detecting based on the fault detection network protocol session that the state of the P2P tunnel is down, the egress network device determines the service is unavailable from the ingress network device via the P2P tunnel, and selects a new source to provide the service.

Abstract translation: 点对点（P2P）隧道的出口网络设备可以通过P2P隧道从P2P LSP的入口网络设备接收到LSP Ping消息，其中LSP Ping消息指定出口网络设备关联的标签 通过P2P隧道向出口网络设备提供的服务。 响应收到LSP Ping消息，出口网络设备可以存储标签和P2P隧道之间的关联。 出口网络设备还通过P2P隧道进行故障检测网络协议会话来监控P2P隧道的状态。 响应于基于故障检测网络协议会话检测到P2P隧道状态下降，出口网络设备通过P2P隧道确定入境网络设备不能使用业务，并选择新的源提供业务 。