公开(公告)号：US11381501B2

公开(公告)日：2022-07-05

申请号：US16947453

申请日：2020-08-03

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Robert W. Kebler ,  Kapil Arora ,  Himanshu Agarwal ,  Soumyodeep Joarder

IPC: H04L45/00 ,  H04L12/46 ,  H04L41/0813

Abstract: A device may store first information regarding a first pseudowire connection with a first device, wherein the first pseudowire connection provides access to an Ethernet virtual private network (EVPN) to communicate with a host device. The device may store second information regarding a second pseudowire connection with a second device, wherein the second pseudowire connection provides access to the EVPN to communicate with the host device. The device may receive a message that includes a configuration identifier and identify the configuration identifier. The device may change a first characteristic of the first pseudowire connection based on the configuration identifier. The device may change a second characteristic of the second pseudowire connection based on the configuration identifier. The device may receive data from the host device based on changing the first characteristic of the first pseudowire connection and changing the second characteristic of the second pseudowire connection.

公开(公告)号：US11233741B1

公开(公告)日：2022-01-25

申请号：US16948092

申请日：2020-09-02

Applicant: Juniper Networks, Inc.

Inventor： Vinod Kumar N ,  Robert W. Kebler ,  Michal Styszynski ,  Dinesh Sivaraj ,  Vikram Nagarajan

IPC: G06F15/16 ,  H04L12/801 ,  H04L12/721 ,  H04L12/761 ,  H04L12/707 ,  H04L12/927

Abstract: The techniques describe example network systems for adaptively determining whether to perform ingress replication or assisted replication of a multicast flow based on classification of the multicast flow. For example, a provider edge (PE) device of a plurality of PE devices participating in an EVPN comprises one or more processors operably coupled to a memory, wherein the one or more processors are configured to: receive a multicast traffic flow, determine a classification of the multicast traffic flow, and perform, based at least in part on the classification of the multicast traffic flow, one of: ingress replication of the multicast traffic flow or assisted replication of the multicast traffic flow.

公开(公告)号：US20190229937A1

公开(公告)日：2019-07-25

申请号：US15880370

申请日：2018-01-25

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Zhaohui Zhang ,  Princy T. Elizabeth ,  Ragupathi J

IPC: H04L12/18 ,  H04L12/721 ,  H04L29/08 ,  H04L12/46

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L12/4641 ,  H04L45/12 ,  H04L69/324

Abstract: In some examples, a method includes receiving, by a first provider edge (PE) device of a layer 3 network, configuration data configuring the PE device to provide, via an Ethernet segment with an edge device, active-active multi-homing layer 2 (L2) virtual bridge connectivity to the edge device using an Ethernet Virtual Private Network (EVPN) instance; receiving, by the first PE device, a multicast Join message for multicast traffic, the multicast Join message identifying a second PE device that also participates in the EVPN instance; processing, by the first PE device, the multicast Join message to generate multicast forwarding state; and forwarding, by the first PE device based at least on the multicast forwarding state, the multicast traffic.

公开(公告)号：US10291433B2

公开(公告)日：2019-05-14

申请号：US15644274

申请日：2017-07-07

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Robert W. Kebler ,  Kapil Arora ,  Naveen Ashik

IPC: H04L12/707 ,  H04L12/46 ,  H04L12/761 ,  H04L12/721 ,  H04L12/741 ,  H04L12/18 ,  H04L12/703 ,  H04L12/723

Abstract: In some examples, a customer edge device (CE) is configured to receive configuration data for multi-homed connectivity for a local layer 2 (L2) network with a L2 virtual private network (L2VPN) for a layer 3 (L3) network for switching L2 packet data units (PDUs) among two or more L2 networks connected to the L3 network including the local L2 network, wherein the configuration data for multi-homed connectivity configures the CE with a primary attachment circuit to a primary neighbor provider edge device (PE) for the L2VPN and with a backup attachment circuit to a backup neighbor PE for the L2VPN; and generate and send, in response to snooping a multicast join message indicating a multicast group, a control plane message via the backup attachment circuit to the backup neighbor PE for the L2VPN, wherein the control plane message is destined for the backup neighbor PE for the L2VPN.

公开(公告)号：US10270604B2

公开(公告)日：2019-04-23

申请号：US15636484

申请日：2017-06-28

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Robert W. Kebler

IPC: H04L12/18 ,  H04L12/24 ,  H04L12/781

Abstract: Techniques are described for grouping related flows using a flow attribute value indicated by a modified protocol independent multicast (PIM) join request. According to techniques of this disclosure, a network device is configured to receive, from a downstream network device, two or more first PIM join requests indicating two or more multicast groups. In response to determining that each first PIM join request of the two or more first PIM join requests indicates a common first flow attribute value, the network device is configured to select a common path. The network device is further configured to send two or more second PIM join requests indicating the two or more multicast groups to an upstream network device along the selected common path and toward the source. Each second PIM join request of the two or more second PIM join requests includes a common second flow attribute value.

公开(公告)号：US20190007225A1

公开(公告)日：2019-01-03

申请号：US15636484

申请日：2017-06-28

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Robert W. Kebler

IPC: H04L12/18 ,  H04L12/24

Abstract: Techniques are described for grouping related flows using a flow attribute value indicated by a modified protocol independent multicast (PIM) join request. According to techniques of this disclosure, a network device is configured to receive, from a downstream network device, two or more first PIM join requests indicating two or more multicast groups. In response to determining that each first PIM join request of the two or more first PIM join requests indicates a common first flow attribute value, the network device is configured to select a common path. The network device is further configured to send two or more second PIM join requests indicating the two or more multicast groups to an upstream network device along the selected common path and toward the source. Each second PIM join request of the two or more second PIM join requests includes a common second flow attribute value.

公开(公告)号：US20180287946A1

公开(公告)日：2018-10-04

申请号：US15655210

申请日：2017-07-20

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Wen Lin ,  Robert W. Kebler ,  Princy T. Elizabeth ,  Kapil Arora

IPC: H04L12/801 ,  H04L29/06 ,  G06F9/54

CPC classification number: H04L47/15 ,  G06F9/542 ,  H04L12/18 ,  H04L47/125 ,  H04L63/0272 ,  H04L65/4076

Abstract: In general, techniques are described for load-balancing responsibility for forwarding of multicast traffic into an active-active Ethernet segment between two or more multi-homed provider edge (PE) routers in an Ethernet Virtual Private Network (EVPN). In one example, a PE router may receive an Internet Group Management Protocol (IGMP) join report for a multicast group. The PE router may send join synch routes used to synchronize the join report for the multicast group across the Ethernet segment. The PE router may deterministically determine whether the PE router is configured to be an elected multicast forwarder for one of a plurality of multicast groups. If the PE router is elected a multicast forwarder, the PE router may configure a forwarding state of the PE router to ignore a designated forwarder calculation and to forward the multicast traffic into the Ethernet segment regardless of whether the PE router is a designated forwarder.

公开(公告)号：US20180191515A1

公开(公告)日：2018-07-05

申请号：US15396329

申请日：2016-12-30

Applicant: Juniper Networks, Inc.

Inventor： Sanoj Kadavil Vivekanandan ,  Robert W. Kebler ,  Vikram Nagarajan ,  Anish Peter

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

CPC classification number: H04L12/185 ,  H04L12/1881 ,  H04L12/4641 ,  H04L61/6077

Abstract: Techniques are described for multicast flow prioritization in protocol independent multicast (PIM) networks with multicast flow limits. According to the disclosed techniques, once a router has reached its multicast flow limit, the router may preempt an installed lower priority multicast flow with a newly requested higher priority multicast flow. For example, if a maximum number of multicast flows are installed on the router, then, upon receiving a PIM join for a higher priority flow as compared to the installed flows, the router replaces one of the installed lower priority flows with the received higher priority flow. Furthermore, according to the disclosed techniques, priority values for multicast flows are consistent across a PIM domain and each of the routers within the PIM domain is configured to use the priority values to select a higher priority flow over a lower priority flow.

公开(公告)号：US20180034648A1

公开(公告)日：2018-02-01

申请号：US15281362

申请日：2016-09-30

Applicant: Juniper Networks, Inc.

Inventor： Vikram Nagarajan ,  Robert W. Kebler ,  Eric C. Rosen ,  Princy T. Elizabeth ,  Kapil Arora

IPC: H04L12/18 ,  H04L7/00 ,  H04L12/741 ,  H04L12/46 ,  H04L12/66 ,  H04L12/947

CPC classification number: H04L12/18 ,  H04L7/0079 ,  H04L12/462 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/02 ,  H04L45/24 ,  H04L45/54 ,  H04L45/66 ,  H04L45/745 ,  H04L49/25 ,  H04L67/1038 ,  H04L69/14 ,  H04L69/324 ,  H04L69/325

Abstract: In general, the disclosure describes techniques for communicating multicast group leave requests between two or more load-balanced, multi-homed PE routers included in an Ethernet Virtual Private Network (EVPN). The techniques of the disclosure enable the two or more PE routers to synchronize IGMP state and routing information amongst one another to ensure that the one of the multi-homed PE routers elected as the designated forwarder (DF) ceases forwarding the multicast group traffic to the CE router, even if it is not the PE router that receives the IGMP leave request.

公开(公告)号：US20160182358A1

公开(公告)日：2016-06-23

申请号：US14576830

申请日：2014-12-19

Applicant: Juniper Networks, Inc.

Inventor： Anish Peter ,  Robert W. Kebler ,  Jayakumar Ramalingam ,  Vikram Nagarajan

IPC: H04L12/761 ,  H04W40/22 ,  H04W40/02 ,  H04L12/741 ,  H04L12/751 ,  H04L12/18 ,  H04L29/12

CPC classification number: H04L45/16 ,  H04L12/18 ,  H04L12/185 ,  H04L45/026 ,  H04L45/74 ,  H04L61/1535

Abstract: In one example, a method includes exchanging, by a first routing device and with a second routing device, targeted hello messages using a Protocol Independent Multicast (PIM) protocol to establish a targeted neighbor connection between the first routing device and the second routing device, wherein the first routing device exchanges the targeted hello messages with the second routing device via at least one intermediate routing device, and wherein at least one of the first or second routing device comprises a rendezvous point (RP). The example method further includes processing, by the first routing device using the targeted neighbor connection, a register message that includes multicast stream data elements, wherein each multicast stream data element identifies a source address and a group address that are collectively associated with a respective multicast stream, and wherein each multicast stream data element further indicates whether the respective multicast stream is active or withdrawn.

Abstract translation: 在一个示例中，一种方法包括由第一路由设备和第二路由设备使用协议独立组播（PIM）协议来交换目标的hello消息，以在第一路由设备和第二路由设备之间建立目标邻居连接， 其中所述第一路由设备经由至少一个中间路由设备与所述第二路由设备交换目标的hello消息，并且其中所述第一或第二路由设备中的至少一个包括会合点（RP）。 所述示例性方法还包括由所述第一路由设备使用所述目标邻居连接来处理包括多播流数据元素的注册消息，其中每个多播流数据元素标识与相应多播合并关联的源地址和组地址 流，并且其中每个多播流数据元素进一步指示相应的多播流是活动还是撤销。