公开(公告)号：US20100238813A1

公开(公告)日：2010-09-23

申请号：US11477975

申请日：2006-06-29

申请人： David Allan ,  Nigel Bragg ,  Marc Holness

发明人： David Allan ,  Nigel Bragg ,  Marc Holness

IPC分类号： H04L12/28 ,  H04L12/26

CPC分类号： H04L41/0668 ,  H04L12/437 ,  H04L12/4641 ,  H04L12/465 ,  H04L2012/421

摘要： A resilient virtual Ethernet ring has nodes interconnected by working and protection paths. Each node has a set of VLAN IDs (VIDs) for tagging traffic entering the ring by identifying the ingress node and whether the traffic is on the working or protection path. MAC addresses are learned in one direction around the ring. A port aliasing module records in a forwarding table a port direction opposite to a learned port direction. Each node can also cross-connect working and protection paths. If a span fails, the two nodes immediately on either side of the failure are cross-connected to fold the ring working-path traffic is cross-connected onto the protection path at the first of the two nodes and is then cross-connected back onto the working path at the second of the two nodes so that traffic always ingresses and egresses the ring from the working path.

摘要翻译： 一个有弹性的虚拟以太网环具有通过工作和保护路径互连的节点。 每个节点都有一组VLAN ID（VID），用于通过识别入口节点来识别进入环的流量，以及流量是否在工作或保护路径上。 MAC地址是围绕环的一个方向学习的。 端口混叠模块在转发表中记录与学习端口方向相反的端口方向。 每个节点还可以交叉连接工作​​和保护路径。 如果跨度故障，则立即在故障两侧的两个节点交叉连接以折叠环工作路径业务交叉连接到两个节点中的第一个的保护路径上，然后交叉连接回 在两个节点的第二个处的工作路径，使得流量总是从工作路径进入和离开环。

公开(公告)号：US09203644B2

公开(公告)日：2015-12-01

申请号：US12420970

申请日：2009-04-09

申请人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon

发明人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon

IPC分类号： H04L12/28 ,  H04L12/46 ,  H04L12/427 ,  H04L12/701 ,  H04L12/42 ,  H04L12/931 ,  H04L12/935 ,  H04L12/751

CPC分类号： H04L12/4641 ,  H04L12/42 ,  H04L12/427 ,  H04L45/00 ,  H04L45/02 ,  H04L49/3009 ,  H04L49/351

摘要： A unique RVID is used for each spoke node to identify traffic flowing from that spoke node to the hub and from the hub to the spoke. Spoke nodes perform MAC learning on any frame containing their assigned unique RVID and only bridge traffic received on the ring to a client port if the traffic contains their assigned RVID. Thus, MAC learning at the spoke is localized to client routes, or to routes of interest that pass through the hub. The hub node learns C-VID/RVID-ringport bindings for traffic on the ring. When a frame is received on the ring, the hub will use the C-VID and RVID to determine the I-SID and forward the traffic onto the external network. When a frame is received from the external network, the hub node will use the I-SID & C-VID to determine the RVID of the spoke node, and then use the C-VID & RVID to determine, from its forwarding database, which ringport should be used to output the frame.

摘要翻译： 每个辐条节点都使用唯一的RVID来识别从该辐条节点到集线器以及从集线器到辐条的流量。 Spoke节点在包含其分配的唯一RVID的任何帧上执行MAC学习，并且只有在流量包含其分配的RVID时才将环上接收到的流量桥接到客户端端口。 因此，在轮辐处的MAC学习被本地化到客户端路由或通过集线器的兴趣路线。 集线器节点学习环路上的流量的C-VID / RVID-ringport绑定。 当在环上收到帧时，集线器将使用C-VID和RVID来确定I-SID并将流量转发到外部网络。 当从外部网络接收到帧时，集线器节点将使用I-SID和C-VID来确定分支节点的RVID，然后使用C-VID和RVID从其转发数据库中确定哪个 应该使用ringport来输出框架。

公开(公告)号：US09025435B2

公开(公告)日：2015-05-05

申请号：US13654929

申请日：2012-10-18

申请人： Marc Holness ,  Gerard S. Swinkels

发明人： Marc Holness ,  Gerard S. Swinkels

IPC分类号： G06F11/00 ,  H04L12/437

CPC分类号： H04L12/437

摘要： A method of managing a ring network. Bandwidth utilization metrics indicative of traffic flows within the network are derived. An optimal seam location is calculated based on the bandwidth utilization metrics. A channel block can be implemented at the calculated optimal seam location. The optimal seam location can be selected to balance traffic flows in the network, and can be updated as the distribution of traffic evolves over time.

摘要翻译： 一种管理环网的方法。 导出指示网络内的业务流的带宽利用率指标。 基于带宽利用率指标计算最佳接缝位置。 通道块可以在计算出的最佳接缝位置上实现。 可以选择最佳接缝位置来平衡网络中的流量，并随着流量的分布随着时间的推移而更新。

公开(公告)号：US08958332B2

公开(公告)日：2015-02-17

申请号：US13724204

申请日：2012-12-21

申请人： Marc Holness ,  David Wright Martin

发明人： Marc Holness ,  David Wright Martin

IPC分类号： G01R31/00 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04L12/813

CPC分类号： H04L47/365 ,  H04L5/0064 ,  H04L45/24 ,  H04L47/20

摘要： A method, a network, and a network element use dynamic packet traffic performance adjustment techniques. In an exemplary embodiment, the dynamic resizing techniques utilize different packet connections providing connectivity to same sites between which bandwidth resizing is needed. Each of the packet connections has a separate and independent bandwidth profile that governs an amount of traffic that is dispatched over each packet connection. A network element sourcing traffic into the packet connections uses bridge functionality that dispatches client traffic onto all of the packet connections or an individual packet connection. This effectively means that the transport network bandwidth utilization is only consumed by a single packet connection, i.e., the packet connection-A (even through there are multiple configured). The network element sinking the traffic selects from a single active packet connection.

摘要翻译： 一种方法，网络和网元使用动态分组流量性能调整技术。 在示例性实施例中，动态调整大小技术利用不同的分组连接来提供与需要带宽调整大小之间的相同站点的连接。 每个分组连接具有独立且独立的带宽配置文件，其控制在每个分组连接上分派的流量。 将流量引入分组连接的网络元件使用桥接功能，其将客户端流量分派到所有分组连接或单个分组连接。 这实际上意味着传输网络带宽利用率仅由单个分组连接消耗，即，分组连接-A（即使通过多个配置）。 吞吐流量的网络元件从单个活动分组连接中选择。

公开(公告)号：US20110164502A1

公开(公告)日：2011-07-07

申请号：US13047128

申请日：2011-03-14

申请人： Dinesh Mohan ,  Marc Holness

发明人： Dinesh Mohan ,  Marc Holness

IPC分类号： H04L12/26

CPC分类号： H04L43/08 ,  H04L41/04 ,  H04L43/0852

摘要： Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface, the amount of time a service has been unavailable, and many other parameters. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a response is required and collected, or an unsolicited collection method in which a response is not required.

摘要翻译： 可以在客户和供应商流量点之间定义维护实体，以允许在以太网上进行性能管理。 维护实体可以被定义用于接入链路，域内和域间，并且可以基于链路或服务来定义。 维护实体可以用于监视网络内或跨网络的性能，并且可以用于监视各种性能参数，例如帧丢失，帧延迟，帧延迟变化，可用性，错误帧秒，服务状态，帧吞吐量， 发送，接收或丢弃的帧数，环回接口的状态，服务不可用的时间量以及许多其他参数。 可以使用几种管理机制，并且可以使用需要和收集响应的请求收集方法来收集测量值，或者不需要响应的非请求收集方法。

公开(公告)号：US07924725B2

公开(公告)日：2011-04-12

申请号：US10881296

申请日：2004-06-30

申请人： Dinesh Mohan ,  Marc Holness

发明人： Dinesh Mohan ,  Marc Holness

IPC分类号： G01R31/08

CPC分类号： H04L43/08 ,  H04L41/04 ,  H04L43/0852

摘要： Maintenance entities may be defined between customer or provider flow points for performance management on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface and/or the amount of time a service has been unavailable. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a responses are required and collected, or an unsolicited collection method in which a response is not required.

摘要翻译： 可以在客户或供应商流量点之间定义维护实体，以便在以太网上进行性能管理。 维护实体可以被定义用于接入链路，域内和域间，并且可以基于链路或服务来定义。 维护实体可以用于监视网络内或跨网络的性能，并且可以用于监视各种性能参数，例如帧丢失，帧延迟，帧延迟变化，可用性，错误帧秒，服务状态，帧吞吐量， 发送，接收或丢弃的帧数，环回接口的状态和/或服务不可用的时间量。 可以使用几种管理机制，并且可以使用其中需要和收集响应的请求收集方法或者不需要响应的非请求收集方法来收集测量结果。

公开(公告)号：US07590054B1

公开(公告)日：2009-09-15

申请号：US11225952

申请日：2005-09-14

申请人： Marc Holness ,  Dinesh Mohan ,  Beata Mirek

发明人： Marc Holness ,  Dinesh Mohan ,  Beata Mirek

IPC分类号： G06F11/00

CPC分类号： H04L12/4633

摘要： Protection switching in an Ethernet packet-switched network includes establishing first and second virtual circuits. The first virtual circuit carries packet traffic associated with a different service instance from packet traffic carried by the second virtual circuit. Packet traffic of the first virtual circuit is transmitted from a source network element to a sink network element through a first Ethernet tunnel. Packet traffic of the second virtual circuit is transmitted from the same source network element to the same sink network element through a second Ethernet tunnel. The second Ethernet tunnel is a different path through the Ethernet packet-switched network from the first Ethernet tunnel. During a protection switch, the first virtual circuit is switched from the first Ethernet tunnel to the second Ethernet tunnel. After the switch, packet traffic of the first virtual circuit and packet traffic of the second virtual circuit are transmitted over the second Ethernet tunnel.

摘要翻译： 以太网分组交换网络中的保护倒换包括建立第一和第二虚拟电路。 第一虚拟电路从与第二虚拟电路携带的分组业务携带与不同服务实例相关联的分组业务。 第一虚拟电路的分组业务通过第一以太网隧道从源网元发送到宿网元。 第二虚拟电路的分组业务通过第二以太网隧道从同一源网元发送到同一宿网元。 第二个以太网隧道是从第一个以太网隧道通过以太网分组交换网络的不同路径。 在保护开关期间，第一虚拟电路从第一以太网隧道切换到第二以太网隧道。 在切换之后，通过第二以太网隧道传输第一虚拟电路的分组业务和第二虚拟电路的分组业务。

公开(公告)号：US20090202239A1

公开(公告)日：2009-08-13

申请号：US12390488

申请日：2009-02-22

申请人： Marc Holness ,  Donald Russell Ellis ,  Paul Littlewood ,  Malcolm Betts

发明人： Marc Holness ,  Donald Russell Ellis ,  Paul Littlewood ,  Malcolm Betts

IPC分类号： H04B17/00

CPC分类号： H04L41/5077 ,  H04J3/14 ,  H04J3/1611 ,  H04J2203/0058 ,  H04J2203/006 ,  H04J2203/0082 ,  H04J2203/0085 ,  H04L41/5003 ,  H04L41/5009 ,  H04L41/5032 ,  H04L43/06 ,  Y10S370/907

摘要： An optical network and method for managing a service across an optical network over a dedicated circuit between first and second service termination points include generating a service performance report message (PRM) at each service termination point. Each service PRM has service-specific information related to a performance of the service as determined by the service termination point generating that service PRM. Each service PRM identifies the service to which the service-specific information in that service PRM pertains. Each service termination point transmits the service PRM generated by that service termination point across the optical network over the dedicated circuit to the other service termination point through a service management channel of an optical transport facility. Either of the first and second service termination points is accessed to evaluate an end-to-end performance of the service based on a comparison of the service PRM generated by the first service termination point with the service PRM generated by the second service termination point.

摘要翻译： 用于通过第一和第二服务终端点之间的专用电路管理跨越光网络的服务的光网络和方法包括在每个服务终止点处生成服务性能报告消息（PRM）。 每个服务PRM具有与由生成该服务PRM的服务终止点确定的服务的性能相关的服务特定信息。 每个服务PRM识别该服务PRM中的服务特定信息所属的服务。 每个服务终端点通过专用电路将该服务终端点产生的服务PRM通过光网络通过光传送设施的服务管理信道传输到另一服务终端点。 访问第一和第二服务终止点中的任一个以基于由第一服务终止点生成的服务PRM与由第二服务终止点生成的服务PRM的比较来评估服务的端到端性能。

公开(公告)号：US20070268817A1

公开(公告)日：2007-11-22

申请号：US11546170

申请日：2006-10-11

申请人： Gerald Smallegange ,  Dinesh Mohan ,  Marc Holness ,  Martin Charbonneau ,  Donald Ellis ,  Adrian Bashford

发明人： Gerald Smallegange ,  Dinesh Mohan ,  Marc Holness ,  Martin Charbonneau ,  Donald Ellis ,  Adrian Bashford

IPC分类号： H04J1/16 ,  H04L12/26

CPC分类号： H04L12/4641 ,  H04L12/1863 ,  H04L41/0677

摘要： A method and system for protecting a service available on a broadcast domain. A sub-domain is established within the broadcast domain. The sub-domain includes a group of nodes used to provide a communication path to the service. A primary sub-domain maintenance association and a back-up sub-domain maintenance association are monitored. The primary and sub-domain maintenance associations are a set of primary and back-up paths, respectively, representing connectivity between nodes acting as edge nodes in the sub-domain. A fault is detected within the primary sub-domain maintenance association and a switch to the back-up sub-domain maintenance association occurs.

摘要翻译： 一种用于保护广播域上可用服务的方法和系统。 在广播域内建立一个子域。 子域包括用于提供到服务的通信路径的一组节点。 监控主域维护关联和备份子域维护关联。 主域维护关联和子域维护关联是分别表示作为子域中的边缘节点的节点之间的连接的一组主和备用路径。 在主子域维护关联中检测到故障，并发生切换到备份子域维护关联。

公开(公告)号：US20070076719A1

公开(公告)日：2007-04-05

申请号：US11479694

申请日：2006-06-30

申请人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

发明人： David Allan ,  Nigel Bragg ,  Marc Holness ,  Robert Friskney ,  Simon Parry

IPC分类号： H04L12/56

CPC分类号： H04L49/604 ,  H04L12/4662 ,  H04L12/66 ,  H04L45/22 ,  H04L45/28

摘要： An Ethernet virtual switched sub-network (VSS) is implemented as a virtual hub and spoke architecture overlaid on hub and spoke connectivity built of a combination of Provider Backbone Transport (spokes) and a provider backbone bridged sub-network (hub). Multiple VSS instances are multiplexed over top of the PBT/PBB infrastructure. A loop free resilient Ethernet carrier network is provided by interconnecting Provider Edge nodes through access sub-networks to Provider Tandems to form Provider Backbone Transports spokes with a distributed switch architecture of the Provider Backbone Bridged hub sub-network. Provider Backbone transport protection groups may be formed from the Provider Edge to diversely homed Provider Tandems by defining working and protection trunks through the access sub-network. The Provider Backbone Transport trunks are Media Access Control (MAC) addressable by the associated Provider Edge address or by a unique address associated with the protection group in the Provider Backbone Bridged network domain.

摘要翻译： 以太网虚拟交换子网（VSS）被实现为覆盖在由提供商骨干传输（辐射）和提供商骨干桥接子网（集线器））组合的集线器和辐条连接上的虚拟集线器和分支架构。 多个VSS实例在PBT / PBB基础结构的顶部进行复用。 通过将Provider Edge节点通过接入子网络互连到Provider Tandem来提供无循环的弹性以太网运营商网络，以形成具有提供商骨干桥接子网络的分布式交换机架构的Provider Backbone Transports辐条。 提供商骨干传输保护组可以通过在接入子网中定义工作和保护中继，从提供商边缘形成多样化的提供商串联。 提供商骨干传输干线是可由相关联的提供商边缘地址寻址的媒体访问控制（MAC）或通过与提供商骨干桥接网络域中的保护组相关联的唯一地址。