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1. 发明授权

US07969898B1 Technique for breaking loops in a communications network 有权
标题翻译：在通信网络中断开环路的技术
公开(公告)号：US07969898B1
公开(公告)日：2011-06-28
申请号：US11716055
申请日：2007-03-09
申请人： Alex Raj , Robert H. Thomas , Anna Charny , Prabhu Vaithilingam
发明人： Alex Raj , Robert H. Thomas , Anna Charny , Prabhu Vaithilingam
IPC分类号： H04L12/26
CPC分类号： H04L12/462 , H04L45/00 , H04L45/18 , H04L45/50
摘要： A technique for breaking a loop caused by looping alternate paths associated with a prefix in a communications network. One or more non-looping alternate paths associated with the prefix that exclude a first node in the communications network are identified. One or more alternate paths from nodes in the loop that are associated with the prefix are identified. An identified path that intersects with an identified non-looping path is established as an alternate path associated with the prefix at a node in the loop.
摘要翻译：一种用于通过循环与通信网络中的前缀相关联的备用路径导致的循环的技术。识别与排除通信网络中的第一节点的前缀相关联的一个或多个非循环备用路径。识别与该前缀相关联的来自循环中的节点的一个或多个备选路径。与识别的非循环路径相交的识别路径被建立为与循环中的节点处的前缀相关联的备用路径。

2. 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。

3. 发明申请

US20080031130A1 Methods and apparatus for minimizing duplicate traffic during point to multipoint tree switching in a network 有权
标题翻译：在网络中的点对多点树切换期间最小化重复流量的方法和装置
公开(公告)号：US20080031130A1
公开(公告)日：2008-02-07
申请号：US11497952
申请日：2006-08-01
申请人： Alex E. Raj , Robert H. Thomas
发明人： Alex E. Raj , Robert H. Thomas
IPC分类号： H04J3/14 , H04L12/28 , H04L12/56 , H04J3/26
CPC分类号： H04L45/00 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/50 , H04L45/502
摘要： A method, apparatus and computer program product for minimizing or preventing duplicate traffic during point to multipoint tree switching in a network. In its operation, embodiments disclosed herein utilize control plane trigger mechanisms to handle the receipt of duplicate traffic by network entities after the occurrence of a network failure event. Generally, the control plane trigger mechanism prevents a network entity from processing multicast traffic from both old and new upstream data paths resulting from typical network convergence procedures. The methods and apparatus describe herein apply to standard rerouting procedures as well as fast rerouting procedures for multicast traffic in a network.
摘要翻译：一种用于在网络中的点对多点树切换期间最小化或防止重复流量的方法，装置和计算机程序产品。在其操作中，本文公开的实施例利用控制平面触发机制来处理网络实体在发生网络故障事件之后的重复业务的接收。通常，控制平面触发机制防止网络实体通过典型的网络融合过程来处理来自旧的和新的上游数据路径的组播流量。这里描述的方法和装置适用于网络中的组播流量的标准重路由过程以及快速重路由过程。

4. 发明授权

US06512768B1 Discovery and tag space identifiers in a tag distribution protocol (TDP) 有权
标题翻译：标签分发协议（TDP）中的发现和标签空间标识符
公开(公告)号：US06512768B1
公开(公告)日：2003-01-28
申请号：US09258530
申请日：1999-02-26
申请人： Robert H. Thomas
发明人： Robert H. Thomas
IPC分类号： H04L1228
CPC分类号： H04L45/507 , H04L45/02 , H04L45/026
摘要： A tag-switching router on a tag-switching network establishing a single tag distribution protocol (TDP) session with a peer for the advertisement of tag bindings shared by two or more interfaces and contemporaneously establishing with the peer one or more additional TDP sessions for the advertisement of tag bindings dedicated for use by specific interfaces. Each router interface has an assigned tag space comprised incoming tags that are appended by the peer to input data packets forwarded by the peer. A new Hello message carried in a TDP protocol data unit (PDU) is introduced for use in a TDP discovery mechanism. The router periodically multicasts a specific Hello message from each tag-switching enabled interface and a router TDP identifier in the TDP PDU header identifies the tag space that the router has assigned to the interface. When the router receives a Hello message from the peer at one of its interfaces, the router records the peer TDP identifier in a record associated with the interface to create a link adjacency. The router and peer establish a conventional TDP session to exchange tag binding sets. The router transmits to the peer a Bind message containing advertised tag bindings which, in turn, contain the incoming tags for the tag space identified by the router TDP identifier in the TDP PDU header. The router receives from the peer a Bind message from the peer containing learned tag bindings which, in turn, contain the outgoing tags for the tag space identified by the peer TDP identifier in the TDP PDU header. The router appends outgoing tags to received data packets having destination addresses bound to the learned tag bindings and forwards the tagged received data packets to the peer from the associated interface.
摘要翻译：在标签交换网络上的标签交换路由器，与对等体建立单个标签分发协议（TDP）会话，用于由两个或更多个接口共享的标签绑定的广告，同时与对等体建立一个或多个附加TDP会话，用于专门用于特定接口的标签绑定的广告。每个路由器接口都有一个分配的标签空间，包括由对等体附加的输入标签，以输入对等体转发的数据包。在TDP协议数据单元（PDU）中携带的新的Hello消息被引入用于TDP发现机制中。路由器周期性地从每个启用标签的接口组播特定的Hello消息，并且TDP PDU头中的路由器TDP标识符标识路由器已经分配给该接口的标签空间。当路由器从其接口的对等体收到Hello消息时，路由器将对端TDP标识符记录在与接口关联的记录中，以创建链路邻接。路由器和对等体建立传统的TDP会话来交换标签绑定集。路由器向对等体发送包含通告的标签绑定的绑定消息，该绑定又包含由TDP PDU报头中的路由器TDP标识符标识的标签空间的传入标签。路由器从对端接收包含学习标签绑定的绑定消息，该绑定又包含TDP PDU头中的对等体TDP标识符标识的标签空间的输出标签。路由器将出站标签附加到接收到的具有绑定到学习标签绑定的目的地址的数据包，并将标记的接收到的数据包从相关联的接口转发到对等体。

5. 发明授权

US07945696B2 Differentiated routing using tunnels in a computer network 有权
标题翻译：在计算机网络中使用隧道的差分路由
公开(公告)号：US07945696B2
公开(公告)日：2011-05-17
申请号：US11947876
申请日：2007-11-30
申请人： Jean-Philippe Vasseur , Jeff Apcar , Jim Guichard , Robert H. Thomas
发明人： Jean-Philippe Vasseur , Jeff Apcar , Jim Guichard , Robert H. Thomas
IPC分类号： G06F15/173
CPC分类号： H04L45/04 , H04L45/02 , H04L45/30
摘要： In one embodiment, one or more tunnel mesh groups may be established in at least a portion of a computer network, where each tunnel mesh group corresponds to a differentiated routing profile. Traffic may then be received at the portion of the computer network, the traffic indicating a particular differentiated routing profile (e.g., based on a received label corresponding to the differentiated routing profile as advertised by the portion of the computer network). Accordingly, the traffic may be routed through the portion of the computer network along a tunnel of a particular tunnel mesh group corresponding to the particular differentiated routing profile traffic.
摘要翻译：在一个实施例中，可以在计算机网络的至少一部分中建立一个或多个隧道网格组，其中每个隧道网格组对应于不同的路由简档。然后可以在计算机网络的部分处接收业务，该业务指示特定差分路由配置文件（例如，基于与该计算机网络的部分所通告的差分路由配置文件对应的接收到的标签）。因此，业务可以沿着与特定差异化路由选择业务对应的特定隧道网状组的隧道路由到计算机网络的部分。

6. 发明授权

US07936668B2 Methods and apparatus for distributing label information 有权
标题翻译：用于分发标签信息的方法和装置
公开(公告)号：US07936668B2
公开(公告)日：2011-05-03
申请号：US11138052
申请日：2005-05-26
申请人： James N. Guichard , Matthew H. Birkner , Robert H. Thomas , Roy M. Brooks
发明人： James N. Guichard , Matthew H. Birkner , Robert H. Thomas , Roy M. Brooks
IPC分类号： G01R31/08 , H04L12/28 , H04L12/66
CPC分类号： H04L45/10 , H04L45/507
摘要： A given router in the core of a label-switching network identifies a group of routers to receive common label binding information for later routing packets along respective paths through the label-switching network. One way to identify which of multiple routers to include as a member of the group to receive the same label information is to analyze egress policies associated with downstream routers in the label-switching network. Based on this analysis, the given router identifies group members as routers having a substantially same egress policy as each other. The given router then allocates memory resources to store a common set of label information to be distributed to each member in the group of routers having the same egress policy. After populating the memory resources with label information, the given router distributes a common set of label information to each router in the group of routers.
摘要翻译：标签交换网络的核心中的给定路由器标识一组路由器以接收公共标签绑定信息，以便随后通过标签交换网络沿相应路径路由分组。识别要包括作为组中成员以接收相同标签信息的多个路由器中的哪一个的一种方式是分析与标签交换网络中的下游路由器相关联的出口策略。基于该分析，给定路由器将组成员标识为具有彼此基本相同的出口策略的路由器。然后，给定路由器分配存储器资源来存储要分配给具有相同出口策略的路由器组中的每个成员的公共标签信息集合。在使用标签信息填充内存资源之后，给定的路由器将一组公共标签信息分配给路由器组中的每个路由器。

7. 发明授权

US07899049B2 Methods and apparatus for minimizing duplicate traffic during point to multipoint tree switching in a network 有权
标题翻译：在网络中的点对多点树切换期间最小化重复流量的方法和装置
公开(公告)号：US07899049B2
公开(公告)日：2011-03-01
申请号：US11497952
申请日：2006-08-01
申请人： Alex E. Raj , Robert H. Thomas
发明人： Alex E. Raj , Robert H. Thomas
IPC分类号： H04L12/28 , H04L12/56 , H04J3/26
CPC分类号： H04L45/00 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/50 , H04L45/502
摘要： A method, apparatus and computer program product for minimizing or preventing duplicate traffic during point to multipoint tree switching in a network. In its operation, embodiments disclosed herein utilize control plane trigger mechanisms to handle the receipt of duplicate traffic by network entities after the occurrence of a network failure event. Generally, the control plane trigger mechanism prevents a network entity from processing multicast traffic from both old and new upstream data paths resulting from typical network convergence procedures. The methods and apparatus describe herein apply to standard rerouting procedures as well as fast rerouting procedures for multicast traffic in a network.
摘要翻译：一种用于在网络中的点对多点树切换期间最小化或防止重复流量的方法，装置和计算机程序产品。在其操作中，本文公开的实施例利用控制平面触发机制来处理网络实体在发生网络故障事件之后的重复业务的接收。通常，控制平面触发机制防止网络实体通过典型的网络融合过程来处理来自旧的和新的上游数据路径的组播流量。这里描述的方法和装置适用于网络中的组播流量的标准重路由过程以及快速重路由过程。

8. 发明授权

US07609620B2 Method and apparatus using multiprotocol label switching (MPLS) label distribution protocol (LDP) to establish label switching paths (LSPS) for directed forwarding 有权
标题翻译：使用多协议标签交换（MPLS）标签分发协议（LDP）建立用于定向转发的标签交换路径（LSPS）的方法和装置
公开(公告)号：US07609620B2
公开(公告)日：2009-10-27
申请号：US11203801
申请日：2005-08-15
申请人： Alex E. Raj , Robert H. Thomas , Prabhu Vaithilingam
发明人： Alex E. Raj , Robert H. Thomas , Prabhu Vaithilingam
IPC分类号： G01R31/08 , G06F11/00 , H04L12/28 , H04L12/56
CPC分类号： H04L45/22 , H04L45/00 , H04L45/02 , H04L45/28 , H04L45/50
摘要： A method and apparatus method for providing fast rerouting in a network is presented. The method and apparatus assign a first local label for a prefix, and assign a second local label for the prefix. The first local label is advertised to an upstream peer and the second local label is advertised to a downstream peer. A forwarding entry from the first local label for a prefix is switched to the second local label for the prefix when a failure of a link or next hop is detected.
摘要翻译：提出了一种在网络中提供快速重路由的方法和装置方法。方法和装置为前缀分配第一本地标签，并为前缀分配第二本地标签。将第一个本地标签通告给上游对等体，并将第二个本地标签通告给下游对等体。当检测到链路或下一跳的故障时，来自前缀的第一本地标签的转发表项被切换到前缀的第二本地标签。

9. 发明授权

US4604316A Fluorochemical composition for coating soil resistant yarn 失效
标题翻译：用于涂抹土壤抗性纱线的氟化学成分
公开(公告)号：US4604316A
公开(公告)日：1986-08-05
申请号：US417970
申请日：1982-09-14
申请人： Robert H. Thomas, deceased , by Mary A. Thomas, executrix , Willis B. Hammond , Michael P. Friedberger , William A. Archie
发明人： Robert H. Thomas, deceased , by Mary A. Thomas, executrix , Willis B. Hammond , Michael P. Friedberger , William A. Archie
IPC分类号： D06M13/213 , B32B7/00 , C07C69/76 , D06M13/34
CPC分类号： D06M13/213 , Y10T428/2907 , Y10T428/2909 , Y10T428/2915
摘要： Improved retention on yarn and processing properties have been discovered in a composition of matter comprising meta and para pyromellitates ##STR1## and 70 to 95 percent by weight of specific dimers and other oligomers of I. and II., wherein A is (CH.sub.2).sub.2 (CF.sub.2).sub.n CF.sub.3, where n is 5 to 13 and B is CH.sub.2 CHOHCH.sub.2 Cl.
摘要翻译：已经在包含元和对苯代溴酸盐的物质组合物和图像II中发现了纱线保留性和加工性能的改善。和70至95重量％的I和II的特异性二聚体和其它低聚物，其中A为（CH 2）2（CF 2）n CF 3，其中n为5至13，B为CH 2 CHOHCH 2 Cl。

10. 发明授权

US07286529B1 Discovery and tag space identifiers in a tag distribution protocol (TDP) 有权
标题翻译：标签分发协议（TDP）中的发现和标签空间标识符
公开(公告)号：US07286529B1
公开(公告)日：2007-10-23
申请号：US10351111
申请日：2003-01-24
申请人： Robert H. Thomas
发明人： Robert H. Thomas
IPC分类号： H04L12/28
CPC分类号： H04L45/507 , H04L45/02 , H04L45/026
摘要： A tag-switching router on a tag-switching network establishing a single tag distribution protocol (TDP) session with a peer for the advertisement of tag bindings shared by two or more interfaces and contemporaneously establishing with the peer one or more additional TDP sessions for the advertisement of tag bindings dedicated for use by specific interfaces. Each router interface has an assigned tag space comprised incoming tags that are appended by the peer to input data packets forwarded by the peer. A new Hello message carried in a TDP protocol data unit (PDU) is introduced for use in a TDP discovery mechanism. The router periodically multicasts a specific Hello message from each tag-switching enabled interface and a router TDP identifier in the TDP PDU header identifies the tag space that the router has assigned to the interface. When the router receives a Hello message from the peer at one of its interfaces, the router records the peer TDP identifier in a record associated with the interface to create a link adjacency. The router and peer establish a conventional TDP session to exchange tag binding sets. The router transmits to the peer a Bind message containing advertised tag bindings which, in turn, contain the incoming tags for the tag space identified by the router TDP identifier in the TDP PDU header. The router receives from the peer a Bind message from the peer containing learned tag bindings which, in turn, contain the outgoing tags for the tag space identified by the peer TDP identifier in the TDP PDU header. The router appends outgoing tags to received data packets having destination addresses bound to the learned tag bindings and forwards the tagged received data packets to the peer from the associated interface.
摘要翻译：在标签交换网络上的标签交换路由器，与对等体建立单个标签分发协议（TDP）会话，用于由两个或更多个接口共享的标签绑定的广告，同时与对等体建立一个或多个附加TDP会话，用于专门用于特定接口的标签绑定的广告。每个路由器接口都有一个分配的标签空间，包括由对等体附加的输入标签，以输入对等体转发的数据包。在TDP协议数据单元（PDU）中携带的新的Hello消息被引入用于TDP发现机制中。路由器周期性地从每个启用标签的接口组播特定的Hello消息，并且TDP PDU头中的路由器TDP标识符标识路由器已经分配给该接口的标签空间。当路由器从其接口的对等体收到Hello消息时，路由器将对端TDP标识符记录在与接口关联的记录中，以创建链路邻接。路由器和对等体建立传统的TDP会话来交换标签绑定集。路由器向对等体发送包含通告的标签绑定的绑定消息，该绑定又包含由TDP PDU报头中的路由器TDP标识符标识的标签空间的传入标签。路由器从对端接收包含学习标签绑定的绑定消息，该绑定又包含TDP PDU头中的对等体TDP标识符标识的标签空间的输出标签。路由器将出站标签附加到接收到的具有绑定到学习标签绑定的目的地址的数据包，并将标记的接收到的数据包从相关联的接口转发到对等体。

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