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1. 发明申请

US20060262735A1 Hierarchical label distribution for inter-area summarization of edge-device addresses 有权
公开(公告)号：US20060262735A1
公开(公告)日：2006-11-23
申请号：US11135600
申请日：2005-05-23
申请人： James Guichard , Daniel Tappan , Jean-Philippe Vasseur , Simon Spraggs
发明人： James Guichard , Daniel Tappan , Jean-Philippe Vasseur , Simon Spraggs
IPC分类号： H04L12/28
CPC分类号： H04L45/507 , H04L12/66 , H04L45/04
摘要： A system and method are provided for separately distributing edge-device labels and routing information across routing areas of a computer network. Because the edge-device labels are distributed separately from network routing information, the process of distributing the edge-device labels does not preclude conventional edge-device address summarizations. Illustratively, a novel “label mapping” LSA is employed for distributing the edge-device labels across routing areas. The label-mapping LSA may be embodied as an area-scope OSPF opaque LSA (type 10) or an IS-IS LSP containing TLVs of area scope. Advantageously, the present invention is generally applicable whenever label values are allocated to edge devices in a multi-area computer network and data is “tunneled” through the network from one edge device to another.

2. 发明申请

US20090185573A1 PSUEDOWIRE TERMINATION DIRECTLY ON A ROUTER 有权
标题翻译：电子邮件直接终止
公开(公告)号：US20090185573A1
公开(公告)日：2009-07-23
申请号：US12415396
申请日：2009-03-31
申请人： James N. Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan , W. Scott Wainner , Earl Hardin Booth, III , Christopher Metz , W. Mark Townsley , Wojciech Dec
发明人： James N. Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan , W. Scott Wainner , Earl Hardin Booth, III , Christopher Metz , W. Mark Townsley , Wojciech Dec
IPC分类号： H04L12/56
CPC分类号： H04L12/4633
摘要： A method, apparatus and computer program product for routing data within a packet-switched network using a PW wherein the PW is terminated directly on the layer-3 routing device such that certain services and applications can be utilized is presented. The method, apparatus and computer program product receives an encapsulated layer-2 Protocol Data Unit (PDU) from a pseudowire emulating a service. The encapsulation is removed from the encapsulated layer-2 PDU and a layer-2 circuit associated with the pseudowire is terminated. The circuit is treated as an interface and the PDU is forwarded based on upper layer protocol information within the PDU.
摘要翻译：一种用于使用PW在分组交换网络内路由数据的方法，装置和计算机程序产品，其中PW直接终止在第3层路由设备上，使得可以利用某些服务和应用。方法，装置和计算机程序产品从模拟服务的伪线接收封装的第二层协议数据单元（PDU）。从封装层2 PDU去除封装，并终止与伪线相关联的二层电路。该电路被视为一个接口，并且基于PDU内的上层协议信息转发PDU。

3. 发明申请

US20060120719A1 LINK DISCOVERY AND VERIFICATION USING LOSS OF LIGHT 审中-公开
标题翻译：使用光损失的链接发现和验证
公开(公告)号：US20060120719A1
公开(公告)日：2006-06-08
申请号：US11276158
申请日：2006-02-16
申请人： Richard Bradford , Daniel Tappan
发明人： Richard Bradford , Daniel Tappan
IPC分类号： H04B10/08
CPC分类号： H04B10/00
摘要： Systems and methods for link discovery and verification that minimize the need for line termination resources to generate and interpret packets. According to one aspect of the present invention, a method for operating a first node in a data communication network to verify connectivity to a second node includes sending a request for verification of connectivity to the second node that identifies an IP address of the first node, a port of the first node, and an IP address of the second node. The method also includes toggling a signal emitted by the port, and notifying the second node of a toggling mode of the port. Finally, the method includes receiving a first message from the second node indicating whether the second node detected the toggling. The request for verification of connectivity is sent on a control channel via a control message separate from the signal and the first message.
摘要翻译：用于链接发现和验证的系统和方法，可最大限度地减少线路终端资源生成和解释数据包的需求。根据本发明的一个方面，一种用于操作数据通信网络中的第一节点以验证与第二节点的连接性的方法包括：向第二节点发送用于验证与第一节点的IP地址的连接的验证请求，第一节点的端口和第二节点的IP地址。该方法还包括切换端口发出的信号，并通知端口的切换模式的第二节点。最后，该方法包括从第二节点接收指示第二节点是否检测到切换的第一消息。通过与信号和第一消息分开的控制消息在控制信道上发送连接验证请求。

4. 发明申请

US20050083835A1 Link discovery and verification procedure using loopback 失效
标题翻译：链路发现和验证过程使用环回
公开(公告)号：US20050083835A1
公开(公告)日：2005-04-21
申请号：US10975279
申请日：2004-10-27
申请人： Danny Prairie , Daniel Tappan , Richard Bradford
发明人： Danny Prairie , Daniel Tappan , Richard Bradford
IPC分类号： G02B6/35 , H04L12/26 , H04Q11/00 , H04L1/00
CPC分类号： H04L43/0811 , G02B6/3546 , G02B6/356 , G02B6/3564 , H04Q2011/0039
摘要： Systems and methods for link discovery and verification technique that minimize the need for line termination resources that generate and interpret packets. Of two nodes verifying a link to one another, only one node need have any line termination capability. The node lacking line termination capability simply loops back packets generated by the other node thus verifying the link. Thus, an optical cross-connect can verify links to a wide variety of node types by employing a single line termination unit capable of terminating any suitable packet type. Alternatively, a router can verify connectivity to an optical cross-connect even when the optical cross-connect lacks any line termination capability at all. This saves greatly on implementation costs for optical networks.
摘要翻译：用于链接发现和验证技术的系统和方法，其最小化生成和解释分组的线路终端资源的需要。在验证彼此链接的两个节点中，只有一个节点需要具有任何线路终止能力。缺少线路终端能力的节点简单地循环由另一个节点生成的分组，从而验证链路。因此，光交叉连接可以通过采用能够终止任何合适的分组类型的单个线路终端单元来验证到各种节点类型的链路。或者，即使光交叉连接缺少任何线路终端功能，路由器也可以验证与光交叉连接的连接。这大大节省了光网络的实施成本。

5. 发明授权

US07529257B1 Method for supporting a GMPLS hierarchy through multiple routing instances 有权
标题翻译：通过多个路由实例支持GMPLS层次结构的方法
公开(公告)号：US07529257B1
公开(公告)日：2009-05-05
申请号：US10426739
申请日：2003-04-30
申请人： Daniel Tappan
发明人： Daniel Tappan
IPC分类号： H04L12/28 , H04J3/22 , G06F15/173
CPC分类号： H04L45/302 , H04J3/14 , H04L45/00 , H04L45/04 , H04L45/50
摘要： A method for supporting a GMPLS hierarchy through multiple routing instances in a network having multiple regions is disclosed. Each region has associated therewith a separate routing instance. The method includes initiating creating a link between two regions at an edge device of a first region and selecting a path between the two regions. A message is forwarded from the edge device to a network device coupled to a second region and a response is received from the network device at the edge device. A new LSP linking the two regions is inserted into a routing database for a routing instance associated with the second region.
摘要翻译：公开了一种通过具有多个区域的网络中的多个路由实例来支持GMPLS分级的方法。每个区域都有一个独立的路由实例。该方法包括启动在第一区域的边缘设备处的两个区域之间创建链接并选择两个区域之间的路径。消息从边缘设备转发到耦合到第二区域的网络设备，并且在边缘设备处从网络设备接收响应。链接两个区域的新的LSP被插入到与第二区域相关联的路由实例的路由数据库中。

6. 发明授权

US07516224B2 Pseudowire termination directly on a router 有权
标题翻译：伪线终止在路由器上
公开(公告)号：US07516224B2
公开(公告)日：2009-04-07
申请号：US10970014
申请日：2004-10-21
申请人： James N. Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan , W. Scott Wainner , Earl Hardin Booth, III , Christopher Metz , W. Mark Townsley , Wojciech Dec
发明人： James N. Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan , W. Scott Wainner , Earl Hardin Booth, III , Christopher Metz , W. Mark Townsley , Wojciech Dec
IPC分类号： G06F15/16
CPC分类号： H04L12/4633
摘要： A method, apparatus and computer program product for routing data within a packet-switched network using a PW wherein the PW is terminated directly on the layer-3 routing device such that certain services and applications can be utilized is presented. The method, apparatus and computer program product receives an encapsulated layer-2 Protocol Data Unit (PDU) from a pseudowire emulating a service. The encapsulation is removed from the encapsulated layer-2 PDU and a layer-2 circuit associated with the pseudowire is terminated. The circuit is treated as an interface and the PDU is forwarded based on upper layer protocol information within the PDU.
摘要翻译：一种用于使用PW在分组交换网络内路由数据的方法，装置和计算机程序产品，其中PW直接终止在第3层路由设备上，使得可以利用某些服务和应用。方法，装置和计算机程序产品从模拟服务的伪线接收封装的第二层协议数据单元（PDU）。从封装层2 PDU去除封装，并终止与伪线相关联的二层电路。该电路被视为一个接口，并且基于PDU内的上层协议信息转发PDU。

7. 发明申请

US20060090008A1 Pseudowire termination directly on a router 有权
公开(公告)号：US20060090008A1
公开(公告)日：2006-04-27
申请号：US10970014
申请日：2004-10-21
申请人： Jim Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan
发明人： Jim Guichard , Mohammed Sayeed , Bertrand Duvivier , Daniel Tappan
IPC分类号： G06F15/16
CPC分类号： H04L12/4633
摘要： A method, apparatus and computer program product for routing data within a packet-switched network using a PW wherein the PW is terminated directly on the layer-3 routing device such that certain services and applications can be utilized is presented. The method, apparatus and computer program product receives an encapsulated layer-2 Protocol Data Unit (PDU) from a pseudowire emulating a service. The encapsulation is removed from the encapsulated layer-2 PDU and a layer-2 circuit associated with the pseudowire is terminated. The circuit is treated as an interface and the PDU is forwarded based on upper layer protocol information within the PDU.

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