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1. 发明授权

US07684350B2 Method and apparatus for distributing labels in a label distribution protocol multicast network 有权
标题翻译：在标签分发协议组播网络中分发标签的方法和装置
公开(公告)号：US07684350B2
公开(公告)日：2010-03-23
申请号：US11377807
申请日：2006-03-16
申请人： Alex E. Raj , Eric C. Rosen , Robert H. Thomas , IJsbrand Wijnands
发明人： Alex E. Raj , Eric C. Rosen , Robert H. Thomas , IJsbrand Wijnands
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L45/00 , H04L45/18 , H04L45/507
摘要： A method of distributing labels in a label distribution protocol multicast network having a root node and at least one leaf node comprises the steps, performed at a receiving node, of receiving a label and path vector from a distributing node, carrying out loop or convergence detection from the received path vector and, if convergence or no loop is detected, sending a receiving node label and path vector to its nexthop node in the network.
摘要翻译：在具有根节点和至少一个叶节点的标签分发协议组播网络中分发标签的方法包括在接收节点执行的从分发节点接收标签和路径向量的步骤，执行循环或收敛检测从接收到的路径向量中，如果检测到收敛或无环路，则向网络中的下一跳节点发送接收节点标签和路径向量。

2. 发明授权

US08804718B2 Preventing traffic flooding to the root of a multi-point to multi-point label-switched path tree with no receivers 有权
标题翻译：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。

3. 发明授权

US07830787B1 Flooding control for multicast distribution tunnel 有权
标题翻译：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。

4. 发明申请

US20140036913A1 ACKNOWLEDGED MULTICAST CONVERGENCE 有权
标题翻译：致谢多媒体融合
公开(公告)号：US20140036913A1
公开(公告)日：2014-02-06
申请号：US13563475
申请日：2012-07-31
申请人： Stefan Olofsson , IJsbrand Wijnands
发明人： Stefan Olofsson , IJsbrand Wijnands
IPC分类号： H04L12/56
CPC分类号： H04L12/1868 , H04L45/16 , H04L45/18
摘要： In one embodiment, a device connected to a network as part of a multicast tree receives a revised unicast routing and distributes the revised unicast routing and a query packet to a downstream device in the multicast tree. The device receives an acknowledgement message from the downstream device based on the query packet and determines a new multicast route based on the revised unicast routing and the acknowledgement message from the downstream device.
摘要翻译：在一个实施例中，作为多播树的一部分连接到网络的设备接收经修改的单播路由，并将修改的单播路由和查询分组分发到多播树中的下游设备。该设备基于查询分组从下游设备接收确认消息，并且基于经修改的单播路由和来自下游设备的确认消息确定新的多播路由。

5. 发明申请

US20090271467A1 PREVENTING TRAFFIC FLOODING TO THE ROOT OF A MULTI-POINT TO MULTI-POINT LABEL-SWITCHED PATH TREE WITH NO RECEIVERS 有权
标题翻译：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。

6. 发明授权

US09083636B2 System and method for multipoint label distribution protocol node protection using a targeted session in a network environment 有权
标题翻译：在网络环境中使用目标会话的多点标签分发协议节点保护的系统和方法
公开(公告)号：US09083636B2
公开(公告)日：2015-07-14
申请号：US13493273
申请日：2012-06-11
申请人： IJsbrand Wijnands , Eric Rosen , Syed Kamran Raza , Nagendra Kumar
发明人： IJsbrand Wijnands , Eric Rosen , Syed Kamran Raza , Nagendra Kumar
IPC分类号： G06F11/00 , H04L12/707 , H04L12/939 , H04L12/723 , H04L12/703
CPC分类号： H04L45/22 , H04L45/28 , H04L45/507 , H04L49/552
摘要： A method is provided in one example and includes receiving first address information from a protected node over a first label switched path having a first label. The first address information is associated with a first network element. A second label switched path has been previously established with the first network element. The method further includes establishing a targeted session with the first network element, assigning a second label to the second label switched path, and sending the second label to the first network element over the targeted session.
摘要翻译：在一个示例中提供了一种方法，并且包括通过具有第一标签的第一标签交换路径从受保护节点接收第一地址信息。第一地址信息与第一网络元件相关联。先前已经利用第一网络元件建立了第二标签交换路径。所述方法还包括与所述第一网元建立目标会话，向所述第二标签交换路径分配第二标签，以及通过所述目标会话向所述第一网元发送所述第二标签。

7. 发明授权

US08638787B2 Multicast hello on demand 有权
标题翻译：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。

8. 发明授权

US08116310B2 Reducing packet flooding by a packet switch 有权
标题翻译：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。

9. 发明申请

US20130208582A1 SYSTEM AND METHOD FOR MULTIPOINT LABEL DISTRIBUTION PROTOCOL NODE PROTECTION USING A TARGETED SESSION IN A NETWORK ENVIRONMENT 有权
标题翻译：使用网络环境中的针对性会话的多点标签分发协议节点保护的系统和方法
公开(公告)号：US20130208582A1
公开(公告)日：2013-08-15
申请号：US13493273
申请日：2012-06-11
申请人： IJsbrand Wijnands , Eric Rosen , Syed Kamran Raza , Nagendra Kumar
发明人： IJsbrand Wijnands , Eric Rosen , Syed Kamran Raza , Nagendra Kumar
IPC分类号： G06F11/00 , H04L12/56
CPC分类号： H04L45/22 , H04L45/28 , H04L45/507 , H04L49/552
摘要： A method is provided in one example and includes receiving first address information from a protected node over a first label switched path having a first label. The first address information is associated with a first network element. A second label switched path has been previously established with the first network element. The method further includes establishing a targeted session with the first network element, assigning a second label to the second label switched path, and sending the second label to the first network element over the targeted session.
摘要翻译：在一个示例中提供了一种方法，并且包括通过具有第一标签的第一标签交换路径从受保护节点接收第一地址信息。第一地址信息与第一网络元件相关联。先前已经利用第一网络元件建立了第二标签交换路径。所述方法还包括与所述第一网元建立目标会话，向所述第二标签交换路径分配第二标签，以及通过所述目标会话向所述第一网元发送所述第二标签。

10. 发明授权

US08355347B2 Creating multipoint-to-multipoint MPLS trees in an inter-domain environment 有权
标题翻译：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。

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