公开(公告)号：US20070239891A1

公开(公告)日：2007-10-11

申请号：US11398918

申请日：2006-04-06

申请人： Warren Wainner ,  Earl Booth ,  Bertrand Duvivier ,  Luca Martini

发明人： Warren Wainner ,  Earl Booth ,  Bertrand Duvivier ,  Luca Martini

IPC分类号： G06F15/173

CPC分类号： H04L12/1854 ,  H04L12/1886 ,  H04L45/16

摘要： A method, apparatus and computer program product for providing point-to-multipoint multihop distribution using Pseudowires (PWs) is presented. Data is received at a switching provider edge (S-PE) router from an upstream originating provider edge (O-PE) router by way of a first PW, the first PW having a head-end coupled to the O-PE and a tail end coupled to the S-PE. The data received is replicated by the S-PE to at least one receiver provider edge (R-PE) router by way of a respective PW for each of the at least one R-PE, each of the respective PW between the S-PE and the R-PE having a head end coupled to the SPE and a tail end coupled to the R-PE.

摘要翻译： 提出了一种使用伪线（PW）提供点对多点多跳分布的方法，装置和计算机程序产品。 数据通过第一PW从上游发起端边缘（O-PE）路由器在交换提供商边缘（S-PE）路由器处接收，第一PW具有耦合到O-PE的前端和尾 端连接到S-PE。 所接收的数据由至少一个接收机提供商边缘（R-PE）路由器通过相应的PW复制到至少一个R-PE中的每一个，S-PE中的每个PW 并且R-PE具有耦合到SPE的头端和耦合到R-PE的尾端。

公开(公告)号：US20070011352A1

公开(公告)日：2007-01-11

申请号：US11178647

申请日：2005-07-11

申请人： Luca Martini ,  W. Townsley ,  Earl Booth ,  Christopher Metz

发明人： Luca Martini ,  W. Townsley ,  Earl Booth ,  Christopher Metz

IPC分类号： G06F15/173

CPC分类号： H04L45/02 ,  H04L41/12 ,  H04L45/26

摘要： A method and apparatus for providing information in a network by way of a Pseudowire switching TLV is presented. A second device in the network receives a first message having information relating to a first device in the network. The second device appends information relating to the second device (by way of a Pseudowire switching TLV) to the first message, resulting in a second message. The second message is then forwarded to a third device in the network.

摘要翻译： 提出了一种通过伪线切换TLV在网络中提供信息的方法和装置。 网络中的第二设备接收具有与网络中的第一设备有关的信息的第一消息。 第二设备将与第二设备相关的信息（通过伪线切换TLV）附加到第一消息，导致第二消息。 然后将第二个消息转发到网络中的第三个设备。

公开(公告)号：US20110182189A1

公开(公告)日：2011-07-28

申请号：US12657676

申请日：2010-01-25

申请人： Luca Martini ,  George Swallow

发明人： Luca Martini ,  George Swallow

IPC分类号： H04L12/26

CPC分类号： H04L45/50 ,  H04L45/245 ,  H04L45/68 ,  Y02D50/30

摘要： In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在多协议标签交换（MPLS）网络中的第一网络设备处生成聚合伪线状态消息，将聚合伪线状态消息发送到扩展标签交换路径（LSP）上的第二网络设备 在所述MPLS网络中的所述第一和第二网络设备之间，以及在所述第一网络设备上建立与所述第二网络设备的聚合伪线状态会话，以在所述LSP上收到对所述聚合伪线状态消息的响应。 聚合伪线状态消息被配置为验证LSP上的伪线的当前状态。 还公开了一种装置。

公开(公告)号：US07773594B2

公开(公告)日：2010-08-10

申请号：US11776200

申请日：2007-07-11

申请人： Rajiv Asati ,  John Chapman ,  James Neil Guichard ,  Luca Martini

发明人： Rajiv Asati ,  John Chapman ,  James Neil Guichard ,  Luca Martini

IPC分类号： H04L12/28

CPC分类号： H04L12/2801 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/507 ,  H04L45/68 ,  H04N21/6118 ,  H04N21/6168

摘要： In one embodiment, label distribution sessions are established between a Modular Cable Modem Termination System (M-CMTS) core and one or more remote PHYs. The label distribution sessions facilitate association of labels with either Radio Frequency (RF) channels or groups of the RF channels that extend from the remote PHYs to one or more cable modems. The labels are then used to facilitate communications between the M-CMTS core and the remote PHYs over a MultiProtocol Label Switching (MPLS) network.

摘要翻译： 在一个实施例中，在模块化有线调制解调器终端系统（M-CMTS）核心和一个或多个远程PHY之间建立标签分发会话。 标签分配会话便于标签与从远程PHY延伸到一个或多个电缆调制解调器的射频（RF）信道或RF信道的组的关联。 然后，标签用于通过多协议标签交换（MPLS）网络促进M-CMTS核心和远程PHY之间的通信。

公开(公告)号：US20090041038A1

公开(公告)日：2009-02-12

申请号：US11834663

申请日：2007-08-06

申请人： Luca Martini ,  Ali Sajassi ,  William Mark Townsley ,  Richard Mandfred Pruss

发明人： Luca Martini ,  Ali Sajassi ,  William Mark Townsley ,  Richard Mandfred Pruss

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L45/50

摘要： In one embodiment, a method includes receiving a data link layer packet, such as an Ethernet packet, at a local provider edge node in a provider network from a first customer edge node of multiple customer edge nodes connected directly to the local provider edge node. A tunnel data packet for a particular tunneling protocol is generated. The tunnel data packet includes tunnel data that indicates tunnel termination at a different provider edge in the provider network. The tunnel data packet also includes customer identifier data and the data link layer packet. The customer identifier data uniquely indicates a customer associated with the first customer edge node. The tunnel data packet is sent over the provider network.

摘要翻译： 在一个实施例中，一种方法包括从提供商网络中的本地提供商边缘节点接收来自直接连接到本地提供商边缘节点的多个客户边缘节点的第一客户边缘节点的数据链路层分组，诸如以太网分组。 生成用于特定隧道协议的隧道数据包。 隧道数据包包括指示在提供商网络中的不同提供商边缘处的隧道终止的隧道数据。 隧道数据分组还包括客户标识符数据和数据链路层分组。 客户标识符数据唯一地指示与第一客户边缘节点相关联的顾客。 隧道数据包通过提供商网络发送。

公开(公告)号：US20060182122A1

公开(公告)日：2006-08-17

申请号：US11216963

申请日：2005-08-31

申请人： Bruce Davie ,  Luca Martini ,  Eric Rosen

发明人： Bruce Davie ,  Luca Martini ,  Eric Rosen

IPC分类号： H04L12/28

CPC分类号： H04L12/2854

摘要： A layer-2 virtual-private-network (L2-VPN) service with automatic discovery and connection establishment is provided within a wide-area, multiple-autonomous-system (AS) network according to one of two approaches. In the first approach, inter-AS tunnels are used to connect pairs of provider edge (PE) routers of different ASes, and the PE routers then establish signaling connections to each other which are used to create pseudowires that implement the layer-2 connectivity. A second approach utilizes so-called “pseudowire switching” in which separate pseudowires are created within each AS and between ASes, and then the separate pseudowires are stitched together to form end-to-end connections. The first approach has the benefit of transparent operation provided by the tunnel, while the second approach requires fewer inter-AS signaling connections.

摘要翻译： 根据两种方法之一，在广域，多自治系统（AS）网络内提供具有自动发现和连接建立的二层虚拟专用网（L2-VPN）业务。 在第一种方法中，跨域隧道用于连接不同AS的提供商边缘（PE）路由器对，并且PE路由器然后建立彼此的信令连接，用于创建实现第二层连接的伪线。 第二种方法利用所谓的“伪线切换”，其中在每个AS内和AS之间创建单独的伪线，然后将分离的伪线缝合在一起以形成端到端连接。 第一种方法具有由隧道提供的透明操作的优点，而第二种方法需要较少的AS间信令连接。

公开(公告)号：US08804496B2

公开(公告)日：2014-08-12

申请号：US13315948

申请日：2011-12-09

申请人： Jim Guichard ,  Luca Martini ,  Keyur Patel ,  Thomas David Nadeau

发明人： Jim Guichard ,  Luca Martini ,  Keyur Patel ,  Thomas David Nadeau

IPC分类号： G01R31/08

CPC分类号： H04L45/04 ,  H04L1/22 ,  H04L45/22 ,  H04L45/28 ,  H04L45/42 ,  H04L45/44 ,  H04L45/50 ,  H04L45/68

摘要： The protection of multi-segment pseudowires by utilizing backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a backup path is chosen, and reachability information associated with the chosen backup path is signaled across the backup path before reverse traffic is switched to the backup path. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire.

摘要翻译： 本文公开了通过利用备用路径保护多段伪线。 公开的实施例包括为多段伪线建立至少一个备用路径的方法，该建立是在检测到主路径中的故障之前执行的。 在检测到路径故障时，将检测到的故障信号发送到前端，选择备份路径，并且在将反向流量切换到备份路径之前通过备份路径发信号通知所选备份路径的可达性信息。 在其他公开的实施例中，设备被配置为在检测到主路径中的故障之前建立用于多段伪线的至少一个备用路径。

公开(公告)号：US08619598B2

公开(公告)日：2013-12-31

申请号：US12657676

申请日：2010-01-25

申请人： Luca Martini ,  George Swallow

发明人： Luca Martini ,  George Swallow

IPC分类号： H04B7/212 ,  H04L12/50 ,  G06F15/177

CPC分类号： H04L45/50 ,  H04L45/245 ,  H04L45/68 ,  Y02D50/30

摘要： In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.

公开(公告)号：US07869436B1

公开(公告)日：2011-01-11

申请号：US11250010

申请日：2005-10-13

申请人： Saul Adler ,  James N. Guichard ,  Luca Martini ,  Venkateswara Rao Yarlagadda ,  W. Scott Wainner

发明人： Saul Adler ,  James N. Guichard ,  Luca Martini ,  Venkateswara Rao Yarlagadda ,  W. Scott Wainner

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L29/12216 ,  H04L61/2007 ,  H04L63/0272 ,  H04L63/08

摘要： A system allows a device to communicate using a virtual network the method by assigning a network address to the device. The network address is selected from a plurality of network addresses that can be assigned to any of a plurality of virtual networks. The system receives a request to authenticate the device, and then determines a virtual network on which to assign the device. The virtual network is selected from the plurality of virtual networks. The system identifies the device as authenticated based on the assigning of the network address and the virtual network.

摘要翻译： 系统允许设备使用虚拟网络通过向设备分配网络地址来进行通信。 从可以分配给多个虚拟网络中的任一个的多个网络地址中选择网络地址。 系统接收到认证设备的请求，然后确定要在其上分配设备的虚拟网络。 从多个虚拟网络中选择虚拟网络。 系统根据网络地址和虚拟网络的分配来识别设备的身份认证。

公开(公告)号：US07697439B2

公开(公告)日：2010-04-13

申请号：US11126486

申请日：2005-05-10

申请人： Luca Martini ,  Keyur Patel

发明人： Luca Martini ,  Keyur Patel

IPC分类号： H04L12/26

CPC分类号： H04L45/123 ,  H04L45/04 ,  H04L45/12

摘要： A method for determining a cumulative network layer reachability cost of traversing one or more autonomous network routing systems comprises receiving first network route information from an originating customer edge router, wherein the first network route information identifies a route in a customer network; determining a transit cost from the provider edge router to an endpoint associated with the originating customer edge router based upon a metric value received in a cost community attribute; repeating the determining step for each of one or more autonomous systems that lie in a path from the originating customer edge router to a destination customer edge router, to result in determining an accumulated transit costs across one or more autonomous systems; and determining, based at least in part upon the accumulated transit cost, a best path from the provider edge router to the endpoint associated with the originating customer edge router.

摘要翻译： 用于确定遍历一个或多个自主网络路由系统的累积网络层可达性成本的方法包括从始发客户边缘路由器接收第一网络路由信息，其中所述第一网络路由信息识别客户网络中的路由; 基于在成本共同体属性中接收到的度量值，确定从所述提供者边缘路由器到与所述始发客户边缘路由器相关联的端点的传输成本; 对位于从起始客户边缘路由器到目标客户边缘路由器的路径中的一个或多个自治系统中的每一个重复确定步骤，以导致确定跨越一个或多个自治系统的累积过境成本; 以及至少部分地基于累积的转移成本确定从提供商边缘路由器到与始发客户边缘路由器相关联的端点的最佳路径。