公开(公告)号：US08855122B2

公开(公告)日：2014-10-07

申请号：US11159065

申请日：2005-06-22

申请人： Paul Bottorff ,  Norival Figueira ,  Marc Holness

发明人： Paul Bottorff ,  Norival Figueira ,  Marc Holness

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04J3/16 ,  H04L12/46

CPC分类号： H04L12/4658 ,  H04L12/2852 ,  H04L12/4625 ,  H04L12/4633 ,  H04L41/0893

摘要： An edge device is used to support a backbone provider bridging network to facilitate interconnection of a plurality of networks. The edge device is coupled between the backbone and a first one of the networks, and is operable to encapsulate data units received from the first network with a header, and to forward the encapsulated data unit to the backbone. The header is indicative of a tunnel that is used to support traffic from the first network to a second network over the backbone. The edge device also de-encapsulates data units received from the backbone that are destined for the first network.

摘要翻译： 边缘设备用于支持骨干提供商桥接网络以促进多个网络的互连。 边缘设备耦合在骨干网和网络中的第一网络之间，并且可操作以用头部封装从第一网络接收的数据单元，并将封装的数据单元转发到骨干网。 报头指示用于支持通过主干从第一网络到第二网络的通信的隧道。 边缘设备还对从目的地为第一网络的骨干网接收的数据单元进行解封装。

公开(公告)号：US20050286541A1

公开(公告)日：2005-12-29

申请号：US11159065

申请日：2005-06-22

申请人： Paul Bottorff ,  Norival Figueira ,  Marc Holness

发明人： Paul Bottorff ,  Norival Figueira ,  Marc Holness

IPC分类号： H04J3/16 ,  H04J3/22 ,  H04L12/28 ,  H04L12/46 ,  H04L12/56

CPC分类号： H04L12/4658 ,  H04L12/2852 ,  H04L12/4625 ,  H04L12/4633 ,  H04L41/0893

摘要： An edge device is used to support a backbone provider bridging network to facilitate interconnection of a plurality of networks. The edge device is coupled between the backbone and a first one of the networks, and is operable to encapsulate data units received from the first network with a header, and to forward the encapsulated data unit to the backbone. The header is indicative of a tunnel that is used to support traffic from the first network to a second network over the backbone. The edge device also de-encapsulates data units received from the backbone that are destined for the first network.

摘要翻译： 边缘设备用于支持骨干提供商桥接网络以促进多个网络的互连。 边缘设备耦合在骨干网和网络中的第一网络之间，并且可操作以用头部封装从第一网络接收的数据单元，并将封装的数据单元转发到骨干网。 报头指示用于支持通过主干从第一网络到第二网络的通信的隧道。 边缘设备还对从目的地为第一网络的骨干网接收的数据单元进行解封装。

公开(公告)号：US08750702B1

公开(公告)日：2014-06-10

申请号：US10177998

申请日：2002-06-21

申请人： Norival Figueira ,  Paul Bottorff ,  Guyves Achtari ,  Huiwen Li ,  Richard Brand

发明人： Norival Figueira ,  Paul Bottorff ,  Guyves Achtari ,  Huiwen Li ,  Richard Brand

IPC分类号： H04B10/00

CPC分类号： H04B10/0773 ,  G01M11/00 ,  G01M11/31 ,  H04B10/00 ,  H04B10/071 ,  H04Q11/0067 ,  H04Q2011/0083

摘要： An optical communication device comprises an input/output configured to be coupled to an optical communications line, and a passive optical loopback module coupled to the input and configured to receive optical signals from the input/output, the loopback module being further configured to reflect incoming signals of a test wavelength to the input/output.

摘要翻译： 光通信设备包括被配置为耦合到光通信线路的输入/输出和耦合到输入端并被配置为从输入/输出接收光信号的无源光回送模块，所述环回模块还被配置为反射输入 测试波长的信号到输入/输出。

公开(公告)号：US07876749B1

公开(公告)日：2011-01-25

申请号：US11287583

申请日：2005-11-23

申请人： Norival Figueira ,  Paul Bottorff

发明人： Norival Figueira ,  Paul Bottorff

IPC分类号： H04L12/28

CPC分类号： H04J3/00 ,  H04J14/022 ,  H04J14/0279 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04L12/42 ,  H04L45/44 ,  H04L49/253 ,  H04N21/2368 ,  H04N21/4341 ,  H04Q11/0062 ,  H04Q2011/0092 ,  H04Q2213/1301 ,  H04Q2213/13389

摘要： A metro area network is provided that includes edge and core multiplexors each having a plurality of line ports and one or more uplink ports, a transport network carrying multiplexed traffic between the edge and core multiplexors. In a hard cross connect implementation utilizing source port tagging, a cross-connect device coupled to the core multiplexors provisions or maps communications path between the core multiplexors thereby providing preselected connectivity/mapping of two or more line ports of any of the edge multiplexors. In a soft cross connect implementation utilizing destination port tagging, a cross-connect device includes additional cross-connect multiplexors and functionality to control the destination port tagging performed in the edge, core and cross connect multiplexors thereby provisioning or mapping the desired communications path(s) between various endpoints.

摘要翻译： 提供了一种城域网，其包括每个具有多个线路端口和一个或多个上行链路端口的边缘和核心多路复用器，在边缘和核心多路复用器之间承载复用业务的传输网络。 在使用源端口标签的硬交叉连接实现中，耦合到核心多路复用器的交叉连接设备提供或映射核心多路复用器之间的通信路径，从而提供任意边缘多路复用器的两个或更多个线路端口的预先选择的连接/映射。 在利用目的地端口标签的软交叉连接实现中，交叉连接设备包括附加的交叉连接多路复用器和用于控制在边缘，核心和交叉连接多路复用器中执行的目标端口标记的功能，从而提供或映射所需的通信路径 ）。

公开(公告)号：US20050027881A1

公开(公告)日：2005-02-03

申请号：US10718129

申请日：2003-11-20

申请人： Norival Figueira ,  Paul Bottorff ,  Guyves Achtari ,  Huiwen Li

发明人： Norival Figueira ,  Paul Bottorff ,  Guyves Achtari ,  Huiwen Li

IPC分类号： G06F15/173 ,  H04L12/56

CPC分类号： H04L49/602 ,  H04L45/74 ,  H04L49/201 ,  H04L61/2015

摘要： Frame contained destination information may be used by a switch to identify an appropriate output port for a given frame without performing a table access operation. This reduces the processing requirements of the switch to enable the switch to handle frames more efficiently. The frame contained destination information may be contained in the frame's local destination MAC addresses (DA) such that a portion of the DA directly indicates, for each switch that handles the frame, an output port for that switch. Different portions of the DA may be used by different switches, depending on where they are in the network hierarchy. Large switches may also use sub-fields within their allocated portion in the DA to identify internal switching components. A location resolution server may be provided to store and distribute IP and MAC addresses and respond to local ARP requests on the local domain.

摘要翻译： 可以由交换机使用帧包含的目的地信息来识别给定帧的适当输出端口，而不执行表访问操作。 这减少了开关的处理要求，使开关更有效地处理框架。 帧的目的地信息可以包含在帧的本地目的地MAC地址（DA）中，使得DA的一部分对于处理帧的每个交换机直接指示用于该交换机的输出端口。 取决于它们在网络层次中的位置，DA的不同部分可以被不同的交换机使用。 大型交换机也可以使用它们在DA中分配的部分内的子场来识别内部交换组件。 可以提供位置解析服务器来存储和分发IP和MAC地址并响应本地域上的本地ARP请求。

公开(公告)号：US08625410B2

公开(公告)日：2014-01-07

申请号：US12463827

申请日：2009-05-11

申请人： Bashar Abdullah ,  Marc Holness ,  Paul Bottorff ,  Bernard St-Denis

发明人： Bashar Abdullah ,  Marc Holness ,  Paul Bottorff ,  Bernard St-Denis

IPC分类号： H04L12/28 ,  G01R31/08 ,  G06F15/173

CPC分类号： H04L12/462 ,  H04L12/437 ,  H04L45/18

摘要： A system for controlling packet forwarding through a dual-homed connection between first and second network domains, the dual-homed connection including two peer nodes connected to the first and second network domains. A sub-ring network is instantiated in the first network domain, and includes at least two nodes connected in a linear topology between a pair of end-nodes. Each end-node corresponds with a respective one of the peer nodes. A virtual link through the second network domain for conveys traffic of the sub-ring network between the peer nodes, and closes the sub-ring network to define a ring topology. Each of the nodes of the sub-ring network is controlled to forward packets of the sub-ring network in accordance with a ring network routing scheme.

摘要翻译： 一种用于通过第一和第二网络域之间的双归属连接来控制分组转发的系统，所述双归属连接包括连接到第一和第二网络域的两个对等节点。 子环网络在第一网络域中被实例化，并且包括在一对终端节点之间以线性拓扑连接的至少两个节点。 每个终端节点对应于相应的一个对等节点。 通过第二网域的虚拟链路，用于传送对等节点之间的子环网络的流量，并关闭子环网络以定义环形拓扑。 根据环网路由方案，对子环网络的每个节点进行控制，以转发子环网络的数据包。

公开(公告)号：US20100284413A1

公开(公告)日：2010-11-11

申请号：US12463827

申请日：2009-05-11

申请人： Bashar Abdullah ,  Marc Holness ,  Paul Bottorff ,  Bernard St-Denis

发明人： Bashar Abdullah ,  Marc Holness ,  Paul Bottorff ,  Bernard St-Denis

IPC分类号： H04L12/56

CPC分类号： H04L12/462 ,  H04L12/437 ,  H04L45/18

摘要： A system for controlling packet forwarding through a dual-homed connection between first and second network domains, the dual-homed connection including two peer nodes connected to the first and second network domains. A sub-ring network is instantiated in the first network domain, and includes at least two nodes connected in a linear topology between a pair of end-nodes. Each end-node corresponds with a respective one of the peer nodes. A virtual link through the second network domain for conveys traffic of the sub-ring network between the peer nodes, and closes the sub-ring network to define a ring topology. Each of the nodes of the sub-ring network is controlled to forward packets of the sub-ring network in accordance with a ring network routing scheme.

摘要翻译： 一种用于通过第一和第二网络域之间的双归属连接来控制分组转发的系统，所述双归属连接包括连接到第一和第二网络域的两个对等节点。 子环网络在第一网络域中被实例化，并且包括在一对终端节点之间以线性拓扑连接的至少两个节点。 每个终端节点对应于相应的一个对等节点。 通过第二网域的虚拟链路，用于传送对等节点之间的子环网络的流量，并关闭子环网络以定义环形拓扑。 根据环网路由方案，对子环网络的每个节点进行控制，以转发子环网络的数据包。

公开(公告)号：US08238245B2

公开(公告)日：2012-08-07

申请号：US12752228

申请日：2010-04-01

申请人： Nigel Bragg ,  Paul Bottorff ,  David Allan ,  Robert Friskney ,  Simon Parry

发明人： Nigel Bragg ,  Paul Bottorff ,  David Allan ,  Robert Friskney ,  Simon Parry

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  G06F15/16 ,  G06F15/173

CPC分类号： H04L45/48 ,  H04L45/04

摘要： A method is provided of planning routes and allocating route identifiers in a managed frame-forwarding network. The network comprises a plurality of nodes interconnected by links, with each node being arranged to forward data frames according to a combination of an identifier and a network address carried by a received data frame and forwarding instructions stored at the node. A first step of the method identifies a sub-set of nodes which are core nodes of the network. The remaining nodes are termed outlying nodes. A spanning tree is then built off each of the identified core nodes, with the spanning tree stopping one link short of any other core node. Each spanning tree defines a loop-free path between a core node at the root of the spanning tree and a set of outlying nodes. Connections are planned between roots of the spanning trees and a different identifier is allocated to each planned connection between a pair of spanning trees.

摘要翻译： 提供了一种在被管理的帧转发网络中规划路由和分配路由标识符的方法。 该网络包括通过链路互连的多个节点，其中每个节点被布置为根据由接收到的数据帧承载的标识符和网络地址的组合以及存储在节点处的转发指令来转发数据帧。 该方法的第一步确定作为网络核心节点的节点子集。 其余节点称为外围节点。 然后，每个标识的核心节点都生成一个生成树，生成树停止一个链路，而不是任何其他核心节点。 每个生成树定义生成树根节点和一组外围节点之间的无环路径。 在生成树的根之间计划连接，并且将不同的标识符分配给一对生成树之间的每个计划的连接。

公开(公告)号：US07756035B2

公开(公告)日：2010-07-13

申请号：US11343996

申请日：2006-01-31

申请人： Nigel Bragg ,  Paul Bottorff ,  David Allan ,  Robert Friskney ,  Simon Parry

发明人： Nigel Bragg ,  Paul Bottorff ,  David Allan ,  Robert Friskney ,  Simon Parry

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  G06F15/16 ,  G06F15/173

CPC分类号： H04L45/48 ,  H04L45/04

摘要： A method is provided of planning routes and allocating route identifiers in a managed frame-forwarding network. The network comprises a plurality of nodes interconnected by links, with each node being arranged to forward data frames according to a combination of an identifier and a network address carried by a received data frame and forwarding instructions stored at the node. A first step of the method identifies a sub-set of nodes which are core nodes of the network. The remaining nodes are termed outlying nodes. A spanning tree is then built off each of the identified core nodes, with the spanning tree stopping one link short of any other core node. Each spanning tree defines a loop-free path between a core node at the root of the spanning tree and a set of outlying nodes. Connections are planned between roots of the spanning trees and a different identifier is allocated to each planned connection between a pair of spanning trees.

摘要翻译： 提供了一种在被管理的帧转发网络中规划路由和分配路由标识符的方法。 该网络包括通过链路互连的多个节点，其中每个节点被布置为根据由接收到的数据帧承载的标识符和网络地址的组合以及存储在节点处的转发指令来转发数据帧。 该方法的第一步确定作为网络核心节点的节点子集。 其余节点称为外围节点。 然后，每个标识的核心节点都生成一个生成树，生成树停止一个链路，而不是任何其他核心节点。 每个生成树定义生成树根节点和一组外围节点之间的无环路径。 在生成树的根之间计划连接，并且将不同的标识符分配给一对生成树之间的每个计划的连接。

公开(公告)号：US06788681B1

公开(公告)日：2004-09-07

申请号：US09513244

申请日：2000-02-25

申请人： Alan J. Hurren ,  Joseph M. Regan ,  Paul Bottorff ,  Mark Cobbold

发明人： Alan J. Hurren ,  Joseph M. Regan ,  Paul Bottorff ,  Mark Cobbold

IPC分类号： H04L1256

CPC分类号： H04L61/2069 ,  H04L12/4641 ,  H04L29/12216 ,  H04L29/12292 ,  H04L45/00 ,  H04L61/2007

摘要： A method and apparatus for providing a Virtual Private Network (VPN) over a connectionless network connecting a plurality of Local Area Networks (LANs), such as an Ethernet network, is disclosed. The method and apparatus comprises associated each VPN with a unique identifier and each LAN of the VPN with a interface device connecting the LAN to the connectionless network, which may be for example, a Synchronous Optical Network (SONET). The interface device may service a plurality of LANs. Accordingly, each LAN is associated with a User-Network Interface that forms part of the interface device. Each data packet destined for a second LAN, such Ethernet frames, received by the interface device for a first LAN is encapsulated with, if known, a Media Access Control (MAC) address of the interface device connected to the second LAN, the VPN's unique identifier, and the port on the interface device connected to the second LAN. Additionally, the corresponding MAC and port address of the first interface device is also used to encapsulate the Ethernet frames. If the MAC and port address is not known (i.e., it is not stored in a database on the first interface device), the first interface device multicasts an encapsulated Ethernet packet to the entire VPN. The first interface device maintains (i.e., updates and appends) its database of MAC and port addresses in response to encapsulated data frames received by the first interface device.

摘要翻译： 公开了一种通过连接多个局域网（LAN）（例如以太网）的无连接网络提供虚拟专用网（VPN）的方法和装置。 所述方法和装置包括具有唯一标识符的相关联的每个VPN和所述VPN的每个LAN，以及将LAN连接到无连接网络的接口设备，所述无连接网络可以是例如同步光网络（SONET）。 接口设备可以服务于多个LAN。 因此，每个LAN与形成接口设备的一部分的用户 - 网络接口相关联。 如果已知的话，由接口设备接收的用于第一LAN的第二LAN的每个数据分组（例如以太网帧）被封装，连接到第二LAN的接口设备的媒体访问控制（MAC）地址，VPN的唯一 标识符和连接到第二LAN的接口设备上的端口。 此外，第一接口设备的相应MAC和端口地址也用于封装以太网帧。 如果MAC和端口地址不知道（即它不存储在第一接口设备上的数据库中），则第一接口设备将封装的以太网分组多播到整个VPN。 响应于由第一接口设备接收到的封装数据帧，第一接口设备维护（即更新和追加）其数据库的MAC和端口地址。