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    PIM SOURCE DISCOVERY BY LAST HOP ROUTER
    11.
    发明申请
    PIM SOURCE DISCOVERY BY LAST HOP ROUTER 有权
    PIM源由最近的HOP路由器发现

    公开(公告)号：US20160277199A1

    公开(公告)日：2016-09-22

    申请号：US14754612

    申请日：2015-06-29

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L12/18 ,  H04L12/725 ,  H04L12/773 ,  H04L12/44 ,  H04W72/00

    CPC classification number: H04L45/30 ,  H04L12/185 ,  H04L12/1863 ,  H04L12/44 ,  H04L45/16 ,  H04L45/48 ,  H04L45/60

    Abstract: Techniques are described for enhancements to Protocol Independent Multicast (PIM) to enable a last hop router (LHR) to perform source discovery and directly build or join a source tree. According to the techniques of this disclosure, the LHR builds a communication channel with a rendezvous point (RP) router and requests source information for at least one multicast group for which the LHR has interested receivers. The RP responds to the request by looking into a register database maintained by the RP and sending source information indicating at least one source that is actively providing traffic for the at least one multicast group. Based on the response, the LHR initiates a (S,G) PIM Join message toward the at least one source for the at least one multicast group to directly build or join at least one source tree.

    Abstract translation: 描述了用于增强协议独立组播（PIM）的技术，以使最后一跳路由器（LHR）能够执行源发现并直接构建或加入源树。 根据本公开的技术，LHR与会合点（RP）路由器建立通信信道，并且为LHR具有感兴趣的接收者的至少一个多播组请求源信息。 RP通过查看由RP维护的寄存器数据库来发送请求，并且发送指示至少一个正在为至少一个多播组提供流量的源的源信息。 基于响应，LHR向至少一个多播组的至少一个源发起（S，G）PIM Join消息，以直接构建或加入至少一个源树。

    Multicast flow overlay using registration over a reliable transport
    12.
    发明授权
    Multicast flow overlay using registration over a reliable transport 有权

    公开(公告)号：US10476793B2

    公开(公告)日：2019-11-12

    申请号：US15815993

    申请日：2017-11-17

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L12/741 ,  H04L12/751 ,  H04L12/18

    Abstract: An example method includes exchanging targeted hello messages to establish a targeted neighbor connection between a first routing device and a second routing device, wherein one of the routing devices comprises a central routing device, and wherein another one of the routing devices comprises an ingress routing device. The example method further includes processing a source-active register message that specifies a source address and an identifier that are collectively associated with a multicast stream, and wherein the source-active register message further indicates whether the multicast stream is active or withdrawn. After processing the source-active register message, the example method further includes processing a list-of-receivers register message that specifies an egress routing device and at least the identifier that is associated with the multicast stream, wherein the list-of-receivers register message further indicates whether or not the egress routing device requests receipt of data associated with the multicast stream.

    PIM source discovery by last hop router
    13.
    发明授权
    PIM source discovery by last hop router 有权

    公开(公告)号：US09838303B2

    公开(公告)日：2017-12-05

    申请号：US14754612

    申请日：2015-06-29

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L12/761 ,  H04L12/44 ,  H04L12/725 ,  H04L12/18 ,  H04L12/773

    CPC classification number: H04L45/30 ,  H04L12/185 ,  H04L12/1863 ,  H04L12/44 ,  H04L45/16 ,  H04L45/48 ,  H04L45/60

    Abstract: Techniques are described for enhancements to Protocol Independent Multicast (PIM) to enable a last hop router (LHR) to perform source discovery and directly build or join a source tree. According to the techniques of this disclosure, the LHR builds a communication channel with a rendezvous point (RP) router and requests source information for at least one multicast group for which the LHR has interested receivers. The RP responds to the request by looking into a register database maintained by the RP and sending source information indicating at least one source that is actively providing traffic for the at least one multicast group. Based on the response, the LHR initiates a (S,G) PIM Join message toward the at least one source for the at least one multicast group to directly build or join at least one source tree.

    MULTICAST FLOW OVERLAY USING REGISTRATION OVER A RELIABLE TRANSPORT
    15.
    发明申请
    MULTICAST FLOW OVERLAY USING REGISTRATION OVER A RELIABLE TRANSPORT 有权
    通过可靠的运输使用注册的多媒体流量覆盖

    公开(公告)号：US20160277463A1

    公开(公告)日：2016-09-22

    申请号：US14728021

    申请日：2015-06-02

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L29/06 ,  H04L12/751 ,  H04L12/741 ,  H04L12/18

    CPC classification number: H04L45/74 ,  H04L12/18 ,  H04L45/026 ,  H04L45/16 ,  H04L45/42

    Abstract: An example method includes exchanging targeted hello messages to establish a targeted neighbor connection between a first routing device and a second routing device, wherein one of the routing devices comprises a central routing device, and wherein another one of the routing devices comprises an ingress routing device. The example method further includes processing a source-active register message that specifies a source address and an identifier that are collectively associated with a multicast stream, and wherein the source-active register message further indicates whether the multicast stream is active or withdrawn. After processing the source-active register message, the example method further includes processing a list-of-receivers register message that specifies an egress routing device and at least the identifier that is associated with the multicast stream, wherein the list-of-receivers register message further indicates whether or not the egress routing device requests receipt of data associated with the multicast stream.

    Abstract translation: 示例性方法包括交换目标的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，其中路由设备之一包括中央路由设备，并且其中路由设备中的另一个包括入口路由设备 。 该示例性方法还包括处理源 - 活动注册消息，其指定与多播流共同关联的源地址和标识符，并且其中所述源活动注册消息进一步指示所述多播流是活动还是撤销。 在处理源活动注册消息之后，示例性方法还包括处理指定出口路由设备的列表接收者注册消息，以及至少与多播流相关联的标识符，其中接收者列表寄存器 消息进一步指示出口路由设备是否请求接收与组播流相关联的数据。

    Robust control plane assert for protocol independent multicast (PIM)
    16.
    发明授权
    Robust control plane assert for protocol independent multicast (PIM) 有权
    强大的控制平面断言用于协议无关组播（PIM）

    公开(公告)号：US09356789B1

    公开(公告)日：2016-05-31

    申请号：US14036772

    申请日：2013-09-25

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L12/28 ,  H04L12/18

    CPC classification number: H04L12/185 ,  H04L12/18 ,  H04L12/1863 ,  H04L65/4076 ,  H04L69/03

    Abstract: Techniques are described for providing robust control plane asserts in a network using Protocol Independent Multicast (PIM) or other routing protocols for controlling delivery of multicast traffic. In one example, a router includes a control unit having a hardware-based processor executing a Protocol Independent Multicast (PIM) protocol. The control unit, when executing the PIM protocol, initiates an election process for selecting, from a plurality of routers, a forwarding router to forward multicast traffic to a shared media computer network. In addition, the control unit determines whether the multicast traffic has been received by the router and outputs, in association with the election process, a PIM assert message that includes an indication as to whether the router has successfully received the multicast traffic.

    Abstract translation: 描述了用于在使用协议无关组播（PIM）或用于控制多播业务的传送的其他路由协议的网络中提供鲁棒控制平面断言的技术。 在一个示例中，路由器包括具有执行协议无关组播（PIM）协议的基于硬件的处理器的控制单元。 控制单元在执行PIM协议时启动选举过程，用于从多个路由器中选择转发路由器以将组播流量转发到共享媒体计算机网络。 此外，控制单元确定路由器是否已经接收到多播流量，并且与选举过程相关联地输出包括关于路由器是否已经成功接收到多播流量的指示的PIM断言消息。

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