公开(公告)号：US20140064063A1

公开(公告)日：2014-03-06

申请号：US13605518

申请日：2012-09-06

申请人： Marc Holness ,  Gerald Smallegange ,  Brett Caldwell

发明人： Marc Holness ,  Gerald Smallegange ,  Brett Caldwell

IPC分类号： H04L29/14 ,  H04L12/26

CPC分类号： H04L41/0659 ,  H04L29/14

摘要： The present disclosure provides protection systems and methods that provide a mechanism to identify/determine when an interconnection node has been isolated (i.e. when there is no connectivity between a pair of interconnection nodes), from a data path perspective. If/when this condition exists, actions are triggered on the subtending sub-ring that essentially perform a protection switch (which causes the subtending sub-ring nodes to cleanse their forwarding tables), and, more importantly, that remove any channel blocks on the subtending sub-ring. Extensions to the ITU-T G.8032 state machine are also provided that include support for operator command interactions (e.g. DNR, force switch, manual switch, etc.). The protection systems and methods of the present disclosure enable the reliable application of ITU-T G.8032 and the like to more complex (i.e. meshed) deployment environments, among other significant advantages.

摘要翻译： 本公开提供了保护系统和方法，其提供了从数据路径的角度来识别/确定何时互连节点已被隔离（即，当一对互连节点之间没有连接性）的机制。 如果/当这种情况存在时，在基本上执行保护交换机（这导致对等子环节点清除其转发表）的对边子环上触发动作，更重要的是，删除任何通道块 对准子环。 还提供了对ITU-T G.8032状态机的扩展，其包括对操作者命令交互的支持（例如DNR，力开关，手动开关等）。 本公开的保护系统和方法使得能够将ITU-T G.8032等可靠地应用于更复杂（即，网状）部署环境以及其它显着优点。

公开(公告)号：US09197493B2

公开(公告)日：2015-11-24

申请号：US13605518

申请日：2012-09-06

申请人： Marc Holness ,  Gerald Smallegange ,  Brett Caldwell

发明人： Marc Holness ,  Gerald Smallegange ,  Brett Caldwell

IPC分类号： G01R31/08 ,  H04L12/24 ,  H04L29/14

CPC分类号： H04L41/0659 ,  H04L29/14

摘要： The present disclosure provides protection systems and methods that provide a mechanism to identify/determine when an interconnection node has been isolated (i.e. when there is no connectivity between a pair of interconnection nodes), from a data path perspective. If/when this condition exists, actions are triggered on the subtending sub-ring that essentially perform a protection switch (which causes the subtending sub-ring nodes to cleanse their forwarding tables), and, more importantly, that remove any channel blocks on the subtending sub-ring. Extensions to the ITU-T G.8032 state machine are also provided that include support for operator command interactions (e.g. DNR, force switch, manual switch, etc.). The protection systems and methods of the present disclosure enable the reliable application of ITU-T G.8032 and the like to more complex (i.e. meshed) deployment environments, among other significant advantages.

摘要翻译： 本公开提供了保护系统和方法，其提供了从数据路径的角度来识别/确定何时互连节点已被隔离（即，当一对互连节点之间没有连接性）的机制。 如果/当这种情况存在时，在基本上执行保护交换机（这导致对等子环节点清除其转发表）的对边子环上触发动作，更重要的是，删除任何通道块 对准子环。 还提供了对ITU-T G.8032状态机的扩展，其包括对操作者命令交互的支持（例如DNR，力开关，手动开关等）。 本公开的保护系统和方法使得能够将ITU-T G.8032等可靠地应用于更复杂（即，网状）部署环境以及其它显着优点。

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：US10425153B2

公开(公告)日：2019-09-24

申请号：US14990137

申请日：2016-01-07

申请人： Marc Holness ,  Stephen Daniel Shew ,  David Gilson

发明人： Marc Holness ,  Stephen Daniel Shew ,  David Gilson

IPC分类号： H04B10/03 ,  H04L12/43 ,  H04L12/931 ,  H04L12/707 ,  H04Q11/00 ,  H04B10/032 ,  H04L12/437 ,  H04J3/16 ,  H04L12/42 ,  H04L12/64

摘要： Systems and methods for ring protection switching in a network based on selectively blocking and unblocking a port include forwarding traffic via the port over a data channel that utilizes a first service identifier, wherein the data channel is routed in the network along a closed loop; and selectively blocking and unblocking traffic on the port to provide the ring protection switching over the closed loop, wherein the selectively blocking and unblocking is performed based on a management channel that utilizes a second service identifier that is a different type from the first service identifier.

公开(公告)号：US09781048B2

公开(公告)日：2017-10-03

申请号：US14622989

申请日：2015-02-16

申请人： Marc Holness ,  David Wright Martin

发明人： Marc Holness ,  David Wright Martin

IPC分类号： H04L12/805 ,  H04L12/813 ,  H04L5/00 ,  H04L12/707

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.

公开(公告)号：US20150207668A1

公开(公告)日：2015-07-23

申请号：US14161776

申请日：2014-01-23

申请人： Geraldine Ruth Civil ,  Marc Holness

发明人： Geraldine Ruth Civil ,  Marc Holness

IPC分类号： H04L12/24

CPC分类号： H04L41/0654 ,  H04L12/413 ,  H04L12/437 ,  H04L12/4637 ,  H04L29/14 ,  H04L41/0659 ,  H04L43/0811 ,  H04L45/28 ,  H04L2012/421

摘要： A method, network element, and network provide detecting a failure on both ports of a major ring at a network element that has an interconnecting sub-ring terminating thereon; causing a block at an associated sub-ring termination port of the interconnecting sub-ring responsive to the failure on both the ports of the major ring; and monitoring the failure and clearing the block responsive to a recovery of one or both ports from the failure. The method, network, and network element include G.8032 multiple concurrent or simultaneous fault recovery mechanisms that traffic being transported between an interconnected major ring and a sub-ring to be successfully delivered in the event of dual concurrent faults on the major ring.

摘要翻译： 一种方法，网络元件和网络提供了在其上终止有互连子环的网元的主环的两个端口上检测到故障; 在主环的两个端口上的故障响应于互连子环的相关子环终止端口处的块; 并且响应于从故障恢复一个或两个端口来监视故障并清除该块。 方法，网络和网络元素包括G.8032多个并发或同时故障恢复机制，在主环上发生双重并发故障的情况下，在互连主环和子环之间传输的流量将成功传送。

公开(公告)号：US08509061B2

公开(公告)日：2013-08-13

申请号：US13070098

申请日：2011-03-23

申请人： Marc Holness ,  Jie Hu

发明人： Marc Holness ,  Jie Hu

IPC分类号： H04L12/56 ,  H04L12/24

CPC分类号： H04L12/437

摘要： The present disclosure provides systems and methods for scaling performance of Ethernet Ring Protection Protocol. Specifically, the systems and methods may apply to G.8032 and may provide protection switching control plane performance scaling benefits. In an exemplary embodiment, the present invention summarizes the per “virtual” ring control plane protocol into a single logical ring control plane protocol. Advantageously, the present invention transforms the G.8032 protocol from a per-virtual ring protocol to a per-logical ring control protocol. The mechanism/methodology that is used is to include minimal per-virtual ring instance information in to the Ring Automated Protection Switching (R-APS) (control) frames. Additionally, the present invention cleanly decouples the placement of the R-APS (control) channel block location on the ring from that of the virtual channel data blocks. Current G.8032 specifications tightly couple the location of each R-APS (control) channel block and the virtual channel block that it is managing.

摘要翻译： 本公开提供了用于缩放以太网环保护协议的性能的系统和方法。 具体来说，系统和方法可能适用于G.8032，并可提供保护切换控制平面性能扩展的好处。 在示例性实施例中，本发明将每个“虚拟”环控制平面协议总结为单个逻辑环控制平面协议。 有利地，本发明将G.8032协议从每虚拟环协议转换为每逻辑环控制协议。 使用的机制/方法是将最小的每个虚拟环形实例信息包括在环自动保护倒换（R-APS）（控制）帧中。 此外，本发明将环上的R-APS（控制）信道块位置的布置与虚拟信道数据块的位置干净地去耦。 目前的G.8032规范紧密耦合每个R-APS（控制）信道块的位置和它所管理的虚拟通道块。

公开(公告)号：US20120092985A1

公开(公告)日：2012-04-19

申请号：US12907165

申请日：2010-10-19

申请人： Ross Caird ,  Michael Watford ,  Onder Yazar ,  Marc Holness

发明人： Ross Caird ,  Michael Watford ,  Onder Yazar ,  Marc Holness

IPC分类号： G06F11/00

CPC分类号： H04L45/22 ,  H04L41/0213 ,  H04L41/0663 ,  H04L43/0811 ,  H04L45/245 ,  H04L45/28 ,  Y02D50/30

摘要： The present disclosure provides protection systems and methods for Ethernet ports. In particular, the present invention may provide a form of facility protection for any two facilities, located on any two cards. The facilities are provisioned as a protected pair and using automatic ITU-T Y.1731 control frames for control. In an exemplary embodiment, provisioning includes creation of an L2 protection service and associating it to a pair of facilities. One facility is identified as a working facility and the other as a protection facility. Under normal conditions (i.e., no facility fault), the working facility is in an active state and not conditioning while the protection facility is in a standby state and transmitting conditioning to subtending equipment. If a facility fault is detected at the working facility, then the working facility transmits condition Remote Fault (RF) and the protection facility removes it's transmit conditioning and becomes the active facility.

摘要翻译： 本公开提供了用于以太网端口的保护系统和方法。 特别地，本发明可以为位于任何两张卡上的任何两个设施提供一种设施保护形式。 这些设施被配置为受保护对，并使用自动的ITU-T Y.1731控制帧进行控制。 在示例性实施例中，供应包括创建L2保护服务并将其与一对设施相关联。 一个设施被确定为工作设施，另一个设施被确定为保护设施。 在正常情况下（即没有设备故障），工作设备处于活动状态，而不是在保护设备处于待机状态时进行调理，并且将调理传送到对准设备。 如果在工作场所检测到设备故障，则工作设备传送条件远程故障（RF），保护设备将其发送调理移除，成为主动设备。

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：US09264328B2

公开(公告)日：2016-02-16

申请号：US13290947

申请日：2011-11-07

申请人： Jie Hu ,  Marc Holness ,  Cory Gordon ,  Mradula Neginhal ,  Madhavi R. Joshi ,  Asheesh Jadav

发明人： Jie Hu ,  Marc Holness ,  Cory Gordon ,  Mradula Neginhal ,  Madhavi R. Joshi ,  Asheesh Jadav

IPC分类号： H04L12/26 ,  H04L12/24

CPC分类号： H04L43/103 ,  H04L41/0816 ,  H04L41/0886 ,  H04L43/04 ,  H04L43/0811 ,  H04L43/16

摘要： Systems and methods with dynamic Connectivity Fault Management (CFM) and Continuity Check Messages (CCMs) that enable dynamic configurations to avoid limitations associated with static reconfigurations. Variously, a network, a method, and a network element are configured to implement a dynamic CFM method for dynamic notifications and actions taken based thereon between Maintenance End Points (MEPs). The systems and methods may also include a CCM attribute adjustment method between two MEPs, a CCM suspension and/or resumption method between two MEPs, and a MEP auto-discovery and leaving method. Advantageously, the systems and methods may be utilized in a variety of contexts including controlled maintenance, in-service software upgrades, network congestion, discovery of new remote MEPs, and the like to enable dynamic configurations between MEPs. The systems and methods may also apply to Carrier Ethernet, Multiprotocol Label Switching-Transport Profile (MPLS-TP), and the like.

摘要翻译： 具有动态连接故障管理（CFM）和连续性检查消息（CCM）的系统和方法，使动态配置能够避免与静态重新配置相关的限制。 不同的是，网络，方法和网络元件被配置为实现用于动态通知的动态CFM方法和基于维护终点（MEP）之间的动作通知。 系统和方法还可以包括两个MEP之间的CCM属性调整方法，两个MEP之间的CCM暂停和/或恢复方法以及MEP自动发现和离开方法。 有利地，系统和方法可以在各种上下文中使用，包括受控维护，在役软件升级，网络拥塞，新的远程MEP的发现等，以实现MEP之间的动态配置。 系统和方法也可以应用于电信级以太网，多协议标签交换传输模式（MPLS-TP）等。