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1. 发明申请

US20060126495A1 System and methods for detecting network failure 有权
公开(公告)号：US20060126495A1
公开(公告)日：2006-06-15
申请号：US11001149
申请日：2004-12-01
申请人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , Clarence Filsfils , David Ward , Stefano Previdi
发明人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , Clarence Filsfils , David Ward , Stefano Previdi
IPC分类号： H04J1/16
CPC分类号： H04L45/22 , H04L41/0677 , H04L43/50 , H04L45/02 , H04L45/28
摘要： A path verification protocol (PVP) which enumerates a series of messages sent to a set of nodes, or routers, along a suspected path identifies forwarding plane problems for effecting changes at the control plane level. The messages include a command requesting interrogation of a further remote node for obtaining information about the path between the node receiving the PVP message and the further remote node. The node receiving the PVP message replies with a command response indicative of the outcome of attempts to reach the further remote node. The series of messages collectively covers a set of important routing points along a path from the originator to the recipient. The aggregate command responses to the series of PVP messages is analyzed to identify not only whether the entire path is operational, but also the location and nature of the problem.

2. 发明申请

US20060262772A1 System and methods for providing a network path verification protocol 审中-公开
标题翻译：提供网络路径验证协议的系统和方法
公开(公告)号：US20060262772A1
公开(公告)日：2006-11-23
申请号：US11135253
申请日：2005-05-23
申请人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , David Ward , Stefano Previdi
发明人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , David Ward , Stefano Previdi
IPC分类号： H04L12/28
CPC分类号： H04L45/308 , H04L43/0811 , H04L43/12 , H04L45/04 , H04L45/302 , H04L45/70 , H04L47/24 , H04L63/029
摘要： A path verification protocol (PVP) which enumerates a series of messages sent to a set of nodes, or routers, along a network path identifies connectivity and transmission characteristic attributes by defining, implementing, and analyzing path verification messages (PVMs) in a VPN environment. Typical VPN environments are characterized by service level agreements (SLAs) between service providers which specify particular service level and/or bandwidth level guarantees, typically in terms of megabits per second (MB/s) or other qualitative transfer criteria. Such guarantees are often expressed in contractual terms as Quality of Service (QoS) criteria. Configurations herein provide a mechanism for determination of paths and/or routes that satisfy a QoS or other delivery speed/bandwidth guarantee. Such a mechanism may therefore be employed to perform routing decisions for QoS based traffic. Further, such a mechanism is employable to verify QoS levels and related attributes related to contractual terms between service providers and customers.
摘要翻译：路径验证协议（PVP），其列举沿着网络路径发送到一组节点或路由器的一系列消息，通过在VPN环境中定义，实现和分析路径验证消息（PVM）来识别连接性和传输特性属性。典型的VPN环境的特征在于服务提供商之间的服务级别协议（SLA），其指定特定服务级别和/或带宽级别保证，通常以兆比特每秒（MB / s）或其他定性传输标准。这种保证通常以合同条款表示为服务质量（QoS）标准。本文中的配置提供了用于确定满足QoS或其他传送速度/带宽保证的路径和/或路由的机制。因此可以采用这种机制来执行基于QoS的业务的路由决策。此外，这种机制可用于验证与服务提供商和客户之间的合同条款相关的QoS等级和相关属性。

3. 发明申请

US20060215577A1 System and methods for identifying network path performance 审中-公开
标题翻译：用于识别网络路径性能的系统和方法
公开(公告)号：US20060215577A1
公开(公告)日：2006-09-28
申请号：US11086007
申请日：2005-03-22
申请人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , David Ward
发明人： James Guichard , Jean-Philippe Vasseur , Thomas Nadeau , David Ward
IPC分类号： H04L12/28
CPC分类号： H04L43/50 , H04L41/12 , H04L41/5003 , H04L45/00 , H04L45/121 , H04L45/123 , H04L45/124 , H04L45/22 , H04L45/26 , H04L45/302 , H04L45/42 , H04L45/50
摘要： A system and method for aggregating performance characteristics for core network paths allows computation of message traffic performance over each of the available candidate paths through the core for identifying an optimal core network path. Particular network traffic, or messages, include attributes indicative of performance, such as transport time, delay, jitter, and drop percentage, over individual hops along the candidate path. A diagnostic processor parses these messages to identify the attributes corresponding to performance, and analyzes the resulting parsed routing information to compute an expected performance, such as available bandwidth (e.g. transport rate) over the path. Messages including such attributes may include link state attribute (LSA) messages, diagnostic probe messages specifically targeted to enumerate such attributes, or other network suitable network traffic. In a particular configuration, the messages may be Path Verification Protocol (PVP) messages.
摘要翻译：用于聚合核心网络路径的性能特征的系统和方法允许通过核心的每个可用候选路径计算消息业务性能，用于识别最佳核心网路径。特定网络流量或消息包括指示性能的属性，例如沿着候选路径的单个跳跃的传输时间，延迟，抖动和丢弃百分比。诊断处理器解析这些消息以识别与性能相对应的属性，并分析所得到的解析路由信息以计算期望的性能，例如路径上的可用带宽（例如传输速率）。包括这些属性的消息可以包括链路状态属性（LSA）消息，专门用于枚举这样的属性的诊断探测消息，或其他网络合适的网络业务。在特定配置中，消息可以是路径验证协议（PVP）消息。

4. 发明申请

US20060198321A1 System and methods for network reachability detection 有权
标题翻译：网络可达性检测的系统和方法
公开(公告)号：US20060198321A1
公开(公告)日：2006-09-07
申请号：US11072082
申请日：2005-03-04
申请人： Thomas Nadeau , Mohammed Sayeed , Michael Piecuch , James Guichard , Jean-Philippe Vasseur
发明人： Thomas Nadeau , Mohammed Sayeed , Michael Piecuch , James Guichard , Jean-Philippe Vasseur
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L43/50 , H04L45/04 , H04L45/36 , H04L45/50 , H04L69/16
摘要： A mechanism for ASBRs to identify the originating node, or router, in an LSP conversant autonomous system (AS), such as an MPLS VPN environment, maintains the identity of the originating node and successive nodes in subsequent autonomous systems along the path to the node to be pinged. The identity of the transporting nodes is stored in a stack or other object associated with the ping request (ping), such that the pinged node may employ the stored identity as a set of return path routing information. Successive ASBRs store their identity on the stack, in an ordered manner, along the path to the destination. Upon reaching the destination (ping) node, the destination node employs the identity of the first node on the stack to send the acknowledgment, or ping response. Each successive ASBR, therefore, pops (retrieves) the next node identity from the stack and redirects (sends) the ping response to the retrieved node.
摘要翻译：用于识别LSP熟练自治系统（AS）（例如MPLS VPN环境）中的始发节点或路由器的机制在沿着节点的路径的后续自治系统中维护始发节点和连续节点的身份要ping 传输节点的身份存储在与ping请求（ping）相关联的堆栈或其他对象中，使得被ping过的节点可以将所存储的身份用作一组返回路径路由信息。连续的ASBR将按照有序的方式将其身份存储在堆栈中，沿着目的地的路径。在到达目的地（ping）节点时，目的地节点采用栈上的第一个节点的身份来发送确认或ping响应。因此，每个连续的ASBR从堆栈中弹出（检索）下一个节点标识，并将ping响应重定向（发送）到检索到的节点。

5. 发明申请

US20060291445A1 Method for auto-routing of multi-hop pseudowires 有权
标题翻译：多跳伪线自动路由的方法
公开(公告)号：US20060291445A1
公开(公告)日：2006-12-28
申请号：US11152523
申请日：2005-06-14
申请人： Luca Martini , Keyur Patel , Thomas Nadeau , James Guichard
发明人： Luca Martini , Keyur Patel , Thomas Nadeau , James Guichard
IPC分类号： H04L12/28
CPC分类号： H04L45/50 , H04L45/04
摘要： A method and computer system for auto-routing of multi-hop pseudowires is presented. A first Provider Edge (PE) device receives an advertisement from a layer 2 (L2) capable network device, the advertisement including routing state for reaching the L2 device. A first Border Gateway Protocol (BGP) table is populated with the routing state for said L2 capable network device which is reachable by way of an address family reserved for L2 end point reachability information. The first PE device advertises the first BGP table information within a first Service Provider (SP) network such that a multi-hop Pseudowire is capable of being established which includes the L2 capable device.
摘要翻译：提出了一种用于多跳伪线自动路由的方法和计算机系统。第一提供商边缘（PE）设备从具有层2（L2）的网络设备接收广告，该广告包括到达L2设备的路由状态。第一个边界网关协议（BGP）表填充有可通过为L2端点可达性信息保留的地址族可达的所述L2能力网络设备的路由状态。第一PE设备在第一服务提供商（SP）网络内通告第一BGP表信息，使得能够建立包括L2能力设备的多跳伪线。

6. 发明申请

US20050016370A1 Redundant signal transmission system and deployment means 有权
标题翻译：冗余信号传输系统和部署手段
公开(公告)号：US20050016370A1
公开(公告)日：2005-01-27
申请号：US10667042
申请日：2003-09-22
申请人： John O'Brien , Thomas Nadeau , Timothy O'Brien , A. Bawabe , Stephen Bartholomew , Raymond Niederwerfer
发明人： John O'Brien , Thomas Nadeau , Timothy O'Brien , A. Bawabe , Stephen Bartholomew , Raymond Niederwerfer
IPC分类号： C06C5/04 , F42D1/04 , C06B21/00 , C06C5/00
CPC分类号： F42D1/043 , C06C5/04 , F42D1/04
摘要： Percussive signal transmission tubes, of contrasting color, are joined along adjacent longitudinally extending portions by an adhesive bead of polymeric material. The tubes can be separated in the field and are provided on spools without any sheath. A small diameter (0.10 inch) tube can be used to reduce the size of the spool, or increase the length of tubing wound on the spool. An apparatus for assembling the product is also disclosed.
摘要翻译：具有对比色的冲击信号传输管通过聚合材料的粘合剂珠沿相邻的纵向延伸部分连接。管可以在现场分离并且在没有任何鞘的线轴上提供。可以使用小直径（0.10英寸）的管子来减小阀芯的尺寸，或增加缠绕在阀芯上的管道的长度。还公开了一种用于组装产品的装置。

7. 发明申请

US20060215579A1 Method and apparatus for the creation and maintenance of a self-adjusting repository of service level diagnostics test points for network based VPNs 有权
标题翻译：用于创建和维护基于网络的VPN的服务级别诊断测试点的自调节存储库的方法和装置
公开(公告)号：US20060215579A1
公开(公告)日：2006-09-28
申请号：US11091058
申请日：2005-03-28
申请人： Thomas Nadeau , Michael Piecuch , Vanson Lim , Robert Hanzl
发明人： Thomas Nadeau , Michael Piecuch , Vanson Lim , Robert Hanzl
IPC分类号： H04L12/56 , H04L12/28 , H04L12/26 , H04J1/16 , H04J3/14 , H04L1/00
CPC分类号： H04L45/04 , H04L12/4641 , H04L41/12 , H04L41/5003 , H04L43/50 , H04L45/00 , H04L45/502
摘要： A method and apparatus for producing and maintaining a repository of service level test points for network based VPNs is presented. A determination is made regarding whether there is more than one Autonomous System (AS) in a network for one or more VPNs. When there is not more than one AS then next hops are found for the VPN. Next, VPN prefixes associated with the VPN are found and a set of Label Switching Paths (LSPs) in use for the VPN are produced. When the determination is that there is more than one AS then routers in the present AS associated with the VPN are found. VPN label stacks are used to find all Provider Edge (PE) routers associated with the VPN. A set of LSPs in use for the VPN is produced from the routers and the VPN label stacks
摘要翻译：提出了一种用于生成和维护基于网络的VPN的服务级测试点库的方法和装置。确定在一个或多个VPN的网络中是否存在多于一个的自治系统（AS）。当没有多于一个AS时，VPN的下一跳将被发现。接下来，找到与VPN相关联的VPN前缀，并生成一组用于VPN的标签交换路径（LSP）。当确定存在多于一个AS时，找到与VPN相关联的当前AS中的路由器。 VPN标签堆栈用于查找与VPN关联的所有Provider Edge（PE）路由器。用于VPN的一组LSP由路由器和VPN标签堆栈产生

8. 发明申请

US20060185505A1 Redundant signal transmission system and development method 有权
标题翻译：冗余信号传输系统及开发方法
公开(公告)号：US20060185505A1
公开(公告)日：2006-08-24
申请号：US11407556
申请日：2006-04-19
申请人： John O'Brien , Thomas Nadeau , Timothy O'Brien , A. Bawabe , Stephen Bartholomew , Raymond Niederwerfer
发明人： John O'Brien , Thomas Nadeau , Timothy O'Brien , A. Bawabe , Stephen Bartholomew , Raymond Niederwerfer
IPC分类号： C06B21/00
CPC分类号： F42D1/043 , C06C5/04 , F42D1/04
摘要： Percussive signal transmission tubes, of contrasting color, are joined along adjacent longitudinally extending portions by an adhesive bead of polymeric material. The tubes can be separated in the field and are provided on spools without any sheath. A small diameter (0.10 inch) tube can be used to reduce the size of the spool, or increase the length of tubing wound on the spool. An apparatus for assembling the product is also disclosed.
摘要翻译：具有对比色的冲击信号传输管通过聚合材料的粘合剂珠沿相邻的纵向延伸部分连接。管可以在现场分离并且在没有任何鞘的线轴上提供。可以使用小直径（0.10英寸）的管子来减小阀芯的尺寸，或增加缠绕在阀芯上的管道的长度。还公开了一种用于组装产品的装置。

9. 发明申请

US20070025241A1 System and methods for sending trace messages 有权
标题翻译：用于发送跟踪消息的系统和方法
公开(公告)号：US20070025241A1
公开(公告)日：2007-02-01
申请号：US11189357
申请日：2005-07-26
申请人： Thomas Nadeau , W. Townsley
发明人： Thomas Nadeau , W. Townsley
IPC分类号： H04L12/56 , H04L12/28 , H04L12/26 , H04J3/14 , H04J1/16 , H04L1/00
CPC分类号： H04L45/10 , H04L12/4633 , H04L45/04 , H04L45/20 , H04L45/26 , H04L45/50
摘要： A traceroute mechanism enables responses to the traceroute to reach the originating router (originator) along a multihop pseudowire (PW). A traceroute message includes an accumulator operable to count hops along a MH-PW, implemented as a time-to-live (TTL) field, as is known in the art. An originator router employs multiple TTL values, and decrements one of the TTL “accumulators” for each hop. At the ultimate (terminal) router defining the end of the multihop PW, a TTL in the return message is set to the number of hops traveled by the traceroute. The difference between the accumulator and the initial TTL value determines the number of hops traveled by the traceroute message, and hence the number of hops back to the originating node. The traceroute return message, now having a TTL set to the number of hops of the counterpart traceroute, reaches the originator when the TTL value is decremented to zero.
摘要翻译：一个跟踪路由机制使得响应traceroute可以沿着多跳伪线（PW）到达始发路由器（发起者）。跟踪路由消息包括累加器，其可操作用于对实现为生存时间（TTL）字段的MH-PW的计数跳数进行计数，如本领域已知的。发起方路由器采用多个TTL值，并为每一跳递减一个TTL“累加器”。在定义多跳PW结束的终端（终端）路由器中，返回消息中的TTL被设置为由跟踪路由器行进的跳数。累加器和初始TTL值之间的差异决定了由跟踪路由消息传播的跳数，从而确定了返回始发节点的跳数。当TTL值递减到零时，现在将TTL设置为对端traceroute的跳数的traceroute返回消息到达发起者。

10. 发明申请

US20050165834A1 Method and apparatus for controlled access of requests from virtual private network devices to managed information objects using simple network management protocol and multi-topology routing 有权
标题翻译：用于使用简单网络管理协议和多拓扑路由从虚拟专用网络设备到托管信息对象的请求的受控访问的方法和装置
公开(公告)号：US20050165834A1
公开(公告)日：2005-07-28
申请号：US11087912
申请日：2005-03-22
申请人： Thomas Nadeau , A. S. Koushik
发明人： Thomas Nadeau , A. S. Koushik
IPC分类号： G06F17/00 , H04L12/24 , H04L12/46
CPC分类号： H04L41/28 , H04L12/4641 , H04L41/0213 , H04L41/0893 , Y10S707/99939 , Y10S707/99944
摘要： Access control approaches are disclosed wherein managed object in Simple Network Management Protocol (SNMP) Management Information Bases (MIBs) are accessed on a per- Virtual Private Network (VPN)-basis, taking into account multiple topologies that may exist under multi-topology routing (MTR) deployments, with no modifications to existing MIBs. One approach involves determining an identifier of a virtual private network in the request and a context name; determining, based on the context name, one or more sub-contexts that are either explicitly or implicitly specified in the context name; identifying, among a plurality of instances of managed objects that are associated with one or more routing topologies of a multi-topology routing system, a subset of object instances that requests associated with the virtual private network are permitted to access; and providing the request with access to only the subset of object instances.
摘要翻译：公开了访问控制方法，其中在简单网络管理协议（SNMP）管理信息库（MIB）中的被管理对象在每个虚拟专用网（VPN）-basis上被访问，考虑到在多拓扑路由下可能存在的多个拓扑（MTR）部署，而不修改现有的MIB。一种方法涉及确定请求中的虚拟专用网络的标识符和上下文名称; 基于上下文名称来确定在上下文名称中明确地或隐式地指定的一个或多个子上下文; 在与多个拓扑路由系统的一个或多个路由拓扑相关联的被管理对象的多个实例中，识别请求与所述虚拟专用网络相关联的对象实例的子集被允许访问; 并且仅向对象实例的子集提供对该请求的访问。

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