知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

16 条记录 (耗时 0.019 秒)

    Preventing traffic flooding to the root of a multi-point to multi-point label-switched path tree with no receivers
    1.
    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：US08804718B2

    公开(公告)日：2014-08-12

    申请号：US12108197

    申请日：2008-04-23

    申请人： IJsbrand Wijnands ,  Arjen Boers

    发明人： IJsbrand Wijnands ,  Arjen Boers

    IPC分类号： H04L12/16 ,  H04L12/28 ,  H04L12/56 ,  H04J3/26 ,  G06F15/177 ,  H04N7/173

    CPC分类号： H04L12/1886 ,  H04L45/02 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

    摘要： A method is provided for pruning an MP2MP tree. The method includes (a) in a first node of an MP2MP LSP tree, the MP2MP LSP tree including a plurality of nodes, 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, (b) 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 (c) 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. Apparatus are also provided for use in practicing certain embodiments.

    摘要翻译： 提供了一种修剪MP2MP树的方法。 该方法包括：（a）在MP2MP LSP树的第一节点中，包括多个节点的MP2MP LSP树，确定第一节点是否仅具有用于MP2MP LSP树的单个复制分支，单个复制分支表示下游 （b）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，指示第二节点应该避免 向第一节点发送上行流量，以及（c）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，指示第二节点应该禁止 从MP2MP LSP树的上行流向第一个节点发送。 还提供了用于实施某些实施例的装置。

    Flooding control for multicast distribution tunnel
    2.
    发明授权
    Flooding control for multicast distribution tunnel 有权
    组播分布隧道洪泛控制

    公开(公告)号：US07830787B1

    公开(公告)日：2010-11-09

    申请号：US09962958

    申请日：2001-09-25

    申请人： IJsbrand Wijnands ,  Arjen Boers ,  Yiqun Cai ,  Tony Speakman

    发明人： IJsbrand Wijnands ,  Arjen Boers ,  Yiqun Cai ,  Tony Speakman

    IPC分类号： G01R31/08

    CPC分类号： H04L12/18 ,  H04L12/4633 ,  H04L12/4641 ,  H04L47/10 ,  H04L47/122 ,  H04L47/15

    摘要： A multicast transmission scheme is introduced. A multicast data stream is sent on a default tunnel and switched to a data tunnel during flooding conditions. The default tunnel is a point-to-multipoint tunnel from, for example, a source provider edge router to all other provider edge routers in a virtual private network. The data tunnel is a point-to-multipoint tunnel from, for example, a source provider edge router to other provider edge routers that have recipients. Flooding conditions can occur when sending the multicast data stream on the default tunnel, for example, when a specified bandwidth threshold has been exceeded on a source provider edge router. Additionally, the data tunnel is created by selecting a multicast distribution tunnel group from a configured pool of addresses, advertising the group, receiving data joins from, for example, provider edge routers with recipients, and waiting a specified send time.

    摘要翻译： 引入组播传输方案。 组播数据流在缺省隧道中发送，并在洪泛条件下切换到数据隧道。 默认隧道是从虚拟专用网络到源提供商边缘路由器到所有其他提供商边缘路由器的点对多点隧道。 数据隧道是从例如源提供商边缘路由器到具有接收方的其他提供商边缘路由器的点对多点隧道。 在默认隧道上发送组播数据流时，例如在源提供商边缘路由器上超过指定的带宽阈值时，可能会发生洪泛条件。 另外，通过从配置的地址池中选择组播分发隧道组来创建数据隧道，通过该组广播，从例如具有接收者的提供者边缘路由器接收数据连接，并等待指定的发送时间。

    Reducing packet flooding by a packet switch
    3.
    发明授权
    Reducing packet flooding by a packet switch 有权
    通过分组交换机减少数据包洪泛

    公开(公告)号：US08116310B2

    公开(公告)日：2012-02-14

    申请号：US11986583

    申请日：2007-11-24

    申请人： Arjen Boers ,  IJsbrand Wijnands ,  Giovanni Meo

    发明人： Arjen Boers ,  IJsbrand Wijnands ,  Giovanni Meo

    IPC分类号： H04L12/28

    CPC分类号： H04L45/00 ,  H04L45/32 ,  H04L45/66 ,  H04L49/201 ,  H04L49/552

    摘要： Disclosed are, inter alia, methods, apparatus, computer-readable media, mechanisms, and means for reducing packet flooding by a packet switch. A packet switch receives a flood prevention request message from an upstream router, with this message identifying a forwarding media access control (MAC) address and one or more destination MAC addresses of downstream routers. The packet switch looks up, typically in its forwarding data structure(s), these specified MAC addresses of the downstream routers in order to determine its corresponding ports on which to communicate with these MAC addresses. The packet switch updates its forwarding data structures accordingly such that a received multicast packet having as its destination MAC address the received forwarding MAC address will be forwarded out only these determined ports.

    摘要翻译： 公开了尤其是用于减少分组交换机的分组洪泛的方法，装置，计算机可读介质，机制和装置。 分组交换机从上游路由器接收防洪请求消息，该消息标识下行路由器的转发媒体接入控制（MAC）地址和一个或多个目的MAC地址。 分组交换机通常在其转发数据结构中查找下游路由器的这些指定的MAC地址，以便确定其上与这些MAC地址进行通信的相应端口。 分组交换机相应地更新其转发数据结构，使得具有作为其目的地MAC地址的接收到的组播分组被接收的转发MAC地址将仅被转发出这些确定的端口。

    Creating multipoint-to-multipoint MPLS trees in an inter-domain environment
    4.
    发明授权
    Creating multipoint-to-multipoint MPLS trees in an inter-domain environment 有权
    在域间环境中创建多点到多点MPLS树

    公开(公告)号：US08355347B2

    公开(公告)日：2013-01-15

    申请号：US11960187

    申请日：2007-12-19

    申请人： Arjen Boers ,  IJsbrand Wijnands

    发明人： Arjen Boers ,  IJsbrand Wijnands

    IPC分类号： H04L12/28

    CPC分类号： H04L45/16 ,  H04L12/18 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507

    摘要： In one embodiment, a method is provided. A first root node of a first Multipoint-to-Multipoint (MP2MP) Multi-Protocol Label Switching (MPLS) tree, advertises to a second root node of a second MP2MP MPLS tree a first label for the second root node to use to send multicast traffic to the first MP2MP MPLS tree. The first root node receives a second label from the second root node for the first root node to use to send multicast traffic to the second MP2MP MPLS tree. Communications are carried out between the first MP2MP MPLS tree and the second MP2MP MPLS tree using the first label and the second label. In another embodiment, apparatus are also provided.

    摘要翻译： 在一个实施例中，提供了一种方法。 第一多点到多点（MP2MP）多协议标签交换（MPLS）树的第一个根节点向第二个MP2MP MPLS树的第二根节点通告第二个根节点用于发送组播的第一个标签 流量到第一个MP2MP MPLS树。 第一根节点从第二根节点接收第二个根节点，用于将第一个根节点用于向第二个MP2MP MPLS树发送组播流量。 使用第一个标签和第二个标签在第一个MP2MP MPLS树和第二个MP2MP MPLS树之间进行通信。 在另一个实施例中，还提供了装置。

    PREVENTING TRAFFIC FLOODING TO THE ROOT OF A MULTI-POINT TO MULTI-POINT LABEL-SWITCHED PATH TREE WITH NO RECEIVERS
    5.
    发明申请
    PREVENTING TRAFFIC FLOODING TO THE ROOT OF A MULTI-POINT TO MULTI-POINT LABEL-SWITCHED PATH TREE WITH NO RECEIVERS 有权
    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：US20090271467A1

    公开(公告)日：2009-10-29

    申请号：US12108197

    申请日：2008-04-23

    申请人： Arjen Boers ,  IJsbrand Wijnands

    发明人： Arjen Boers ,  IJsbrand Wijnands

    IPC分类号： G06F15/16

    CPC分类号： H04L12/1886 ,  H04L45/02 ,  H04L45/16 ,  H04L45/48 ,  H04L45/50

    摘要： A method is provided for pruning an MP2MP tree. The method includes (a) in a first node of an MP2MP LSP tree, the MP2MP LSP tree including a plurality of nodes, 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, (b) 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 (c) 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. Apparatus are also provided for use in practicing certain embodiments.

    摘要翻译： 提供了一种修剪MP2MP树的方法。 该方法包括：（a）在MP2MP LSP树的第一节点中，包括多个节点的MP2MP LSP树，确定第一节点是否仅具有用于MP2MP LSP树的单个复制分支，单个复制分支表示下游 （b）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，指示第二节点应该避免 向第一节点发送上行流量，以及（c）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，指示第二节点应该禁止 从MP2MP LSP树的上行流向第一个节点发送。 还提供了用于实施某些实施例的装置。

    CREATING MULTIPOINT-TO-MULTIPOINT MPLS TREES IN AN INTER-DOMAIN ENVIRONMENT
    6.
    发明申请
    CREATING MULTIPOINT-TO-MULTIPOINT MPLS TREES IN AN INTER-DOMAIN ENVIRONMENT 有权
    在多域内环境中创建多点到多点的MPLS TREES

    公开(公告)号：US20090161583A1

    公开(公告)日：2009-06-25

    申请号：US11960187

    申请日：2007-12-19

    申请人： Arjen Boers ,  IJsbrand Wijnands

    发明人： Arjen Boers ,  IJsbrand Wijnands

    IPC分类号： H04L12/28

    CPC分类号： H04L45/16 ,  H04L12/18 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507

    摘要： In one embodiment, a method is provided. A first root node of a first Multipoint-to-Multipoint (MP2MP) Multi-Protocol Label Switching (MPLS) tree, advertises to a second root node of a second MP2MP MPLS tree a first label for the second root node to use to send multicast traffic to the first MP2MP MPLS tree. The first root node receives a second label from the second root node for the first root node to use to send multicast traffic to the second MP2MP MPLS tree. Communications are carried out between the first MP2MP MPLS tree and the second MP2MP MPLS tree using the first label and the second label. In another embodiment, apparatus are also provided.

    摘要翻译： 在一个实施例中，提供了一种方法。 第一多点到多点（MP2MP）多协议标签交换（MPLS）树的第一个根节点向第二个MP2MP MPLS树的第二根节点通告第二个根节点用于发送组播的第一个标签 流量到第一个MP2MP MPLS树。 第一根节点从第二根节点接收第二个根节点，用于将第一个根节点用于向第二个MP2MP MPLS树发送组播流量。 使用第一个标签和第二个标签在第一个MP2MP MPLS树和第二个MP2MP MPLS树之间进行通信。 在另一个实施例中，还提供了装置。

    Reducing packet flooding by a packet switch
    7.
    发明申请
    Reducing packet flooding by a packet switch 有权
    通过分组交换机减少数据包洪泛

    公开(公告)号：US20090135722A1

    公开(公告)日：2009-05-28

    申请号：US11986583

    申请日：2007-11-24

    申请人： Arjen Boers ,  IJsbrand Wijnands ,  Giovanni Meo

    发明人： Arjen Boers ,  IJsbrand Wijnands ,  Giovanni Meo

    IPC分类号： H04L12/56

    CPC分类号： H04L45/00 ,  H04L45/32 ,  H04L45/66 ,  H04L49/201 ,  H04L49/552

    摘要： Disclosed are, inter alia, methods, apparatus, computer-readable media, mechanisms, and means for reducing packet flooding by a packet switch. A packet switch receives a flood prevention request message from an upstream router, with this message identifying a forwarding media access control (MAC) address and one or more destination MAC addresses of downstream routers. The packet switch looks up, typically in its forwarding data structure(s), these specified MAC addresses of the downstream routers in order to determine its corresponding ports on which to communicate with these MAC addresses. The packet switch updates its forwarding data structures accordingly such that a received multicast packet having as its destination MAC address the received forwarding MAC address will be forwarded out only these determined ports.

    摘要翻译： 公开了尤其是用于减少分组交换机的分组洪泛的方法，装置，计算机可读介质，机制和装置。 分组交换机从上游路由器接收防洪请求消息，该消息标识下行路由器的转发媒体接入控制（MAC）地址和一个或多个目的MAC地址。 分组交换机通常在其转发数据结构中查找下游路由器的这些指定的MAC地址，以便确定其上与这些MAC地址进行通信的相应端口。 分组交换机相应地更新其转发数据结构，使得具有作为其目的地MAC地址的接收到的组播分组被接收的转发MAC地址将仅被转发出这些确定的端口。

    Multicast hello on demand
    10.
    发明授权
    Multicast hello on demand 有权
    组播您好按需

    公开(公告)号：US08638787B2

    公开(公告)日：2014-01-28

    申请号：US12783922

    申请日：2010-05-20

    申请人： IJsbrand Wijnands

    发明人： IJsbrand Wijnands

    IPC分类号： H04L12/28

    CPC分类号： H04L45/02 ,  H04L45/04

    摘要： In one embodiment, a particular multicast-enabled device on a LAN may determine that it is to send a Join message to an upstream multicast-enabled device that is configured to source multicast data into the LAN. As such, the particular device may transmit a Join message to the upstream device, where the Join message may have a Hello Request indication when there are no downstream multicast neighbors for the upstream device in the LAN, or may not have the Hello Request indication if there is at least one downstream multicast neighbor for the upstream device. Specifically, the Hello Request requests that the upstream device transmit Hello messages onto the LAN. Multicast-enabled devices in the LAN may thus transmit Hello messages in response to receiving a Join message having a Hello Request directed to that particular device, that is, transmitting the Hello messages so long as there is interest in receiving them.

    摘要翻译： 在一个实施例中，LAN上的特定多播使能设备可以确定其将向配置为将多播数据发送到LAN的上游多播使能设备发送加入消息。 因此，特定设备可以向上游设备发送Join消息，其中当在LAN中的上游设备没有下游多播邻居时，Join消息可以具有Hello请求指示，或者可能没有Hello请求指示，如果 上游设备至少有一个下游组播邻居。 具体来说，Hello请求请求上游设备将Hello消息发送到LAN上。 响应于接收到具有指向该特定设备的Hello请求的Join消息，LAN中的启用多播的设备可以传送Hello消息，即，只要有兴趣接收它们，就发送Hello消息。