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    PIM sparse-mode emulation over MPLS LSP's
    1.
    发明授权
    PIM sparse-mode emulation over MPLS LSP's 有权
    MPLS LSP上的PIM稀疏模式仿真

    公开(公告)号：US09154316B2

    公开(公告)日：2015-10-06

    申请号：US13681809

    申请日：2012-11-20

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/28 ,  H04L12/18 ,  H04L12/701 ,  H04L12/715 ,  H04L12/761 ,  H04L12/723 ,  H04L12/773

    CPC classification number: H04L12/18 ,  H04L45/00 ,  H04L45/04 ,  H04L45/16 ,  H04L45/50 ,  H04L45/60

    Abstract: An apparatus and method for emulating a shared or source distribution tree within an MPLS network. In one embodiment of the method, a router receives a multicast data packet. The router transmits the multicast data packet to a first router via a first point-to-point label switched path (LSP). The router replicates the multicast data packet to produce a replicated multicast data packet. Then the router transmits the replicated multicast data packet to a second router via a second point-to-point LSP. The first point-to-point LSP is distinct from the second point-to-point LSP.

    Abstract translation: 一种在MPLS网络内仿真共享或源分发树的装置和方法。 在该方法的一个实施例中，路由器接收多播数据分组。 路由器通过第一个点对点标签交换路径（LSP）将组播数据包发送到第一个路由器。 路由器复制组播数据包以产生复制的组播数据包。 然后，路由器经由第二点对点LSP将复制的多播数据分组发送到第二路由器。 第一个点到点的LSP与第二个点到点的LSP不同。

    UPSTREAM LABEL ALLOCATION ON ETHERNETS FOR MP2MP LSPS
    5.
    发明申请
    UPSTREAM LABEL ALLOCATION ON ETHERNETS FOR MP2MP LSPS 审中-公开
    用于MP2MP LSPS的以太网上的上行标签分配

    公开(公告)号：US20140079068A1

    公开(公告)日：2014-03-20

    申请号：US14041379

    申请日：2013-09-30

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/723

    CPC classification number: H04L45/502 ,  H04L45/04 ,  H04L45/50 ,  H04L45/60

    Abstract: An apparatus or method for upstream label allocation on LANs for multipoint (MP) label switched paths (LSPs). In one embodiment of the method, a first router receives a first incoming labeled data packet, wherein the first incoming labeled data packet comprises a first data packet and one or more first labels. The first router creates a first outgoing labeled data packet, wherein creating the first outgoing labeled data packet includes the step of swapping the one or more first labels of the first incoming labeled data packet with a context label and a forwarding label, wherein the first outgoing labeled data packet comprises the first data packet, the context label, and the forwarding label. Ultimately, the first router transmits the first outgoing labeled data packet to second and third routers via a LAN.

    Abstract translation: 一种用于多点（MP）标签交换路径（LSP）的LAN上的上行标签分配的装置或方法。 在该方法的一个实施例中，第一路由器接收第一输入标记数据分组，其中第一输入标记数据分组包括第一数据分组和一个或多个第一标签。 第一路由器创建第一输出标记数据分组，其中创建第一输出标记数据分组包括用上下文标签和转发标签交换第一输入标记数据分组的一个或多个第一标签的步骤，其中第一输出 标签数据分组包括第一数据分组，上下文标签和转发标签。 最终，第一路由器经由LAN将第一输出标记数据分组发送到第二和第三路由器。

    PIM SPARSE-MODE EMULATION OVER MPLS LSP'S
    6.
    发明申请
    PIM SPARSE-MODE EMULATION OVER MPLS LSP'S 审中-公开
    MPLS LSP上的PIM SPARSE模式仿真

    公开(公告)号：US20130077629A1

    公开(公告)日：2013-03-28

    申请号：US13681809

    申请日：2012-11-20

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/18

    CPC classification number: H04L12/18 ,  H04L45/00 ,  H04L45/04 ,  H04L45/16 ,  H04L45/50 ,  H04L45/60

    Abstract: An apparatus and method for emulating a shared or source distribution tree within an MPLS network. In one embodiment of the method, a router receives a multicast data packet. The router transmits the multicast data packet to a first router via a first point-to-point label switched path (LSP). The router replicates the multicast data packet to produce a replicated multicast data packet. Then the router transmits the replicated multicast data packet to a second router via a second point-to-point LSP. The first point-to-point LSP is distinct from the second point-to-point LSP.

    Abstract translation: 一种在MPLS网络内仿真共享或源分发树的装置和方法。 在该方法的一个实施例中，路由器接收多播数据分组。 路由器通过第一个点对点标签交换路径（LSP）将组播数据包发送到第一个路由器。 路由器复制组播数据包以产生复制的组播数据包。 然后，路由器经由第二点对点LSP将复制的多播数据分组发送到第二路由器。 第一个点到点的LSP与第二个点到点的LSP不同。

    Upstream label allocation on ethernets for MP2MP LSPS
    7.
    发明授权
    Upstream label allocation on ethernets for MP2MP LSPS 有权
    MP2MP LSPS以太网的上行标签分配

    公开(公告)号：US08982881B2

    公开(公告)日：2015-03-17

    申请号：US14041379

    申请日：2013-09-30

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/28 ,  H04L12/56 ,  H04L12/723 ,  H04L12/715 ,  H04L12/773

    CPC classification number: H04L45/502 ,  H04L45/04 ,  H04L45/50 ,  H04L45/60

    Abstract: An apparatus or method for upstream label allocation on LANs for multipoint (MP) label switched paths (LSPs). In one embodiment of the method, a first router receives a first incoming labeled data packet, wherein the first incoming labeled data packet comprises a first data packet and one or more first labels. The first router creates a first outgoing labeled data packet, wherein creating the first outgoing labeled data packet includes the step of swapping the one or more first labels of the first incoming labeled data packet with a context label and a forwarding label, wherein the first outgoing labeled data packet comprises the first data packet, the context label, and the forwarding label. Ultimately, the first router transmits the first outgoing labeled data packet to second and third routers via a LAN.

    Abstract translation: 一种用于多点（MP）标签交换路径（LSP）的LAN上的上行标签分配的装置或方法。 在该方法的一个实施例中，第一路由器接收第一输入标记数据分组，其中第一输入标记数据分组包括第一数据分组和一个或多个第一标签。 第一路由器创建第一输出标记数据分组，其中创建第一输出标记数据分组包括用上下文标签和转发标签交换第一输入标记数据分组的一个或多个第一标签的步骤，其中第一输出 标签数据分组包括第一数据分组，上下文标签和转发标签。 最终，第一路由器经由LAN将第一输出标记数据分组发送到第二和第三路由器。

    Preventing traffic flooding to the root of a multi-point to multi-point label-switched path tree with no receivers
    8.
    发明授权
    Preventing traffic flooding to the root of a multi-point to multi-point label-switched path tree with no receivers 有权
    防止流量洪泛到没有接收器的多点到多点标签交换路径树的根目录

    公开(公告)号：US09369297B2

    公开(公告)日：2016-06-14

    申请号：US14341536

    申请日：2014-07-25

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/18 ,  H04L12/751 ,  H04L12/761 ,  H04L12/753 ,  H04L12/723

    CPC classification number: H04L12/1886 ,  H04L45/02 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

    Abstract: A method is provided for pruning an MP2MP tree. The method includes, in a first node of an MP2MP LSP tree, determining whether the first node has only a single replication branch for the MP2MP LSP tree, the single replication branch representing a downstream path to only a second node of the plurality of nodes. In response to determining that the first node has only a single replication branch for the MP2MP LSP tree, sending a message to the second node indicating that the second node should refrain from sending upstream traffic towards the first node, and in response to determining that the first node does not have only a single replication branch for the MP2MP LSP tree, refraining from sending a message to the second node indicating that the second node should refrain from sending upstream traffic of the MP2MP LSP tree towards the first node.

    Abstract translation: 提供了一种修剪MP2MP树的方法。 该方法在MP2MP LSP树的第一节点中确定第一节点是否仅具有用于MP2MP LSP树的单个复制分支，单个复制分支表示仅到多个节点中的第二节点的下游路径。 响应于确定第一节点仅具有用于MP2MP LSP树的单个复制分支，向第二节点发送消息，指示第二节点不应该向第一节点发送上行业务，并且响应于确定 第一节点不具有用于MP2MP LSP树的单个复制分支，避免向第二节点发送消息，指示第二节点不应该向第一节点发送MP2MP LSP树的上行流量。

    Method to transport bidir PIM over a multiprotocol label switched network
    9.
    发明授权
    Method to transport bidir PIM over a multiprotocol label switched network 有权
    通过多协议标签交换网络传输Bidir PIM的方法

    公开(公告)号：US09083632B2

    公开(公告)日：2015-07-14

    申请号：US13784657

    申请日：2013-03-04

    Applicant: Cisco Technology, Inc.

    Inventor： Jacob Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/28 ,  H04L12/761 ,  H04L12/751 ,  H04L12/723 ,  H04L12/18

    CPC classification number: H04L45/16 ,  H04L12/18 ,  H04L12/185 ,  H04L45/02 ,  H04L45/50

    Abstract: A method, system and an apparatus to transport bidir PIM over a multiprotocol label switched network are provided. The method may comprise receiving a multicast packet at a network element, the multicast packet including an upstream label. The method may further comprise identifying, from the upstream label, a Multicast Distribution Tree (MDT) rooted at a rendezvous point. The packet may be forwarded along the MDT towards the RP based on the upstream label. The MDT may be identified from a downstream label and the packet may be forwarded along the MDT away from the RP based on the downstream label.

    Abstract translation: 提供了一种通过多协议标签交换网络传送双向通信PIM的方法，系统和装置。 该方法可以包括在网络单元处接收多播分组，所述多播分组包括上游标签。 所述方法还可以包括从上游标签识别以集合点为根的组播分发树（MDT）。 分组可以沿着MDT转发到基于上游标签的RP。 可以从下游标签识别MDT，并且可以基于下游标签沿着MDT将分组转发离开RP。

    PREVENTING TRAFFIC FLOODING TO THE ROOT OF A MULTI-POINT TO MULTI-POINT LABEL-SWITCHED PATH TREE WITH NO RECEIVERS
    10.
    发明申请
    PREVENTING TRAFFIC FLOODING TO THE ROOT OF A MULTI-POINT TO MULTI-POINT LABEL-SWITCHED PATH TREE WITH NO RECEIVERS 审中-公开
    防止交通流向多点到多点不带接收者的多点标签路由路径

    公开(公告)号：US20140334308A1

    公开(公告)日：2014-11-13

    申请号：US14341536

    申请日：2014-07-25

    Applicant: Cisco Technology, Inc.

    Inventor： Ijsbrand Wijnands ,  Arjen Boers

    IPC: H04L12/18 ,  H04L12/723

    CPC classification number: H04L12/1886 ,  H04L45/02 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

    Abstract: A method is provided for pruning an MP2MP tree. The method includes, in a first node of an MP2MP LSP tree, determining whether the first node has only a single replication branch for the MP2MP LSP tree, the single replication branch representing a downstream path to only a second node of the plurality of nodes. In response to determining that the first node has only a single replication branch for the MP2MP LSP tree, sending a message to the second node indicating that the second node should refrain from sending upstream traffic towards the first node, and in response to determining that the first node does not have only a single replication branch for the MP2MP LSP tree, refraining from sending a message to the second node indicating that the second node should refrain from sending upstream traffic of the MP2MP LSP tree towards the first node.

    Abstract translation: 提供了一种修剪MP2MP树的方法。 该方法在MP2MP LSP树的第一节点中确定第一节点是否仅具有用于MP2MP LSP树的单个复制分支，单个复制分支表示仅到多个节点中的第二节点的下游路径。 响应于确定第一节点仅具有用于MP2MP LSP树的单个复制分支，向第二节点发送消息，指示第二节点不应该向第一节点发送上行业务，并且响应于确定 第一节点不具有用于MP2MP LSP树的单个复制分支，避免向第二节点发送消息，指示第二节点不应该向第一节点发送MP2MP LSP树的上行流量。

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