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：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：US08588060B2

公开(公告)日：2013-11-19

申请号：US12892959

申请日：2010-09-29

申请人： Marc Holness

发明人： Marc Holness

IPC分类号： G06F11/00

CPC分类号： H04L1/22

摘要： A method of enabling a resilient interface between a first node and a G.8032 Ethernet ring. A Link Aggregation Group (LAG) comprising respective links is provided between the first node and at least two ring nodes of the Ethernet ring. An aggregation function is instantiated at the first node, for distributing subscriber traffic to the links of the LAG in a conventional manner. A first one of the ring nodes is designated as Active, and each of the other ones of the ring nodes are designated as Inactive. At each Inactive ring node, a logical block is imposed on its respective link of the LAG, such that subscriber traffic between the first node and the Ethernet ring is routed by the aggregation function only through the respective link between the first node and the Active ring node.

摘要翻译： 一种在第一节点和G.8032以太网环之间实现弹性接口的方法。 在第一节点和以太网环的至少两个环节点之间提供包括相应链路的链路聚合组（LAG）。 聚合功能在第一节点被实例化，用于以常规方式将用户业务分发给LAG的链路。 环形节点中的第一个被指定为活动节点，并且环节点中的每一个被指定为非活动节点。 在每个非活动环节点处，逻辑块被施加到其LAG的相应链路上，使得第一节点和以太网环之间的用户业务仅通过聚合功能通过第一节点和活动环之间的相应链路进行路由 节点。

公开(公告)号：US20130114394A1

公开(公告)日：2013-05-09

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

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。

公开(公告)号：US20120281710A1

公开(公告)日：2012-11-08

申请号：US13388780

申请日：2009-07-31

申请人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

发明人： Marc Holness ,  Abdullah Bashar ,  Marc-Andre Rochon ,  Simon Parry ,  Chris Ramsden

IPC分类号： H04L12/28

CPC分类号： H04L12/437 ,  H04L45/28 ,  H04L45/50

摘要： A system for controlling packet forwarding through a point-to-point (p2p) connection between first and second end nodes of a packet network domain having a mesh topology. The system comprises a sub-ring network instantiated in the network domain, the sub-ring network comprising a pair of topologically diverse ring spans extending between the first and second end nodes. Each of the end nodes is controlled to forward packets of the p2p connection through the sub-ring network in accordance with a ring network routing scheme, and an intermediate node traversed by one of the ring spans is controlled to forward packets of the p2p connection through the ring span in accordance with a linear path routing scheme.

摘要翻译： 一种用于通过具有网状拓扑的分组网络域的第一和第二端节点之间的点对点（p2p）连接来控制分组转发的系统。 该系统包括在网络域中实例化的子环网络，子环网络包括在第一和第二端节点之间延伸的一对拓扑不同的环跨。 根据环网路由方案，对每个终端节点进行控制，通过子环网转发p2p连接的数据包，并控制由其中一个环网跨越的中间节点转发p2p连接的数据包 环形根据线性路径路由方案。

公开(公告)号：US08305938B2

公开(公告)日：2012-11-06

申请号：US12344355

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： G01R31/08

CPC分类号： H04L12/462 ,  H04L12/42

摘要： To enable an Ethernet ring to be dual homed into a spanning tree protocol controlled Ethernet network, spanning tree control packets (Bridged Protocol Data Units or BPDUs) are transported as data frames over the Ethernet ring. This allows the Ethernet ring to appear as a single link to the spanning tree protocol so that the spanning tree can extend over the link. However, since the spanning tree does not have visibility as to the internal structure of the ring, the spanning tree cannot block links on the Ethernet ring network. Conversely, BPDUs from the Ethernet ring are not transmitted into the Ethernet domain that is implementing the spanning tree, so that the spanning tree is not affected by the control mechanism in place on the Ethernet ring network.

摘要翻译： 为了使以太网环双重归属到生成树协议控制的以太网，生成树控制报文（桥接协议数据单元或BPDU）通过以太网环路作为数据帧传输。 这允许以太网环显示为生成树协议的单个链路，以便生成树可以在链路上延伸。 然而，由于生成树对环的内部结构没有可见性，所以生成树不能阻塞以太网环网上的链路。 相反，来自以太网环的BPDU不会传输到实现生成树的以太网域中，生成树不受以太网环网上的控制机制的影响。

公开(公告)号：US08085676B2

公开(公告)日：2011-12-27

申请号：US11955888

申请日：2007-12-13

申请人： Darek Skalecki ,  Gerard L. Swinkels ,  David I. Allan ,  Nigel L. Bragg ,  Marc Holness

发明人： Darek Skalecki ,  Gerard L. Swinkels ,  David I. Allan ,  Nigel L. Bragg ,  Marc Holness

IPC分类号： G01R31/08

CPC分类号： H04L41/0668 ,  H04L45/22 ,  H04L45/28

摘要： A resilient virtual Ethernet ring has nodes interconnected by 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. A traffic originating node, upon determining that transmitted packets are being looped back due to a fault on a primary path, is adapted to switch transmission of data packets from the primary path to a secondary 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。 如果跨度失效，则立即在故障两侧的两个节点交叉连接以折叠环。 工作路径流量交叉连接到两个节点第一个的保护路径上，然后在两个节点的第二个端口上交叉连接回工作路径，以便流量始终从工作路径中进出环 。 业务始发节点在确定由于主路径上的故障而被发送的分组环回时适于将数据分组从主路径传输到次路径。

公开(公告)号：US20110019538A1

公开(公告)日：2011-01-27

申请号：US12743107

申请日：2008-11-17

申请人： Jeong-Dong Ryoo ,  June-Koo Rhee ,  Bheom-Soon Joo ,  Jin-Sung Im ,  Zahir Uddin Ahmad ,  Yang Yang ,  Marc Holness

发明人： Jeong-Dong Ryoo ,  June-Koo Rhee ,  Bheom-Soon Joo ,  Jin-Sung Im ,  Zahir Uddin Ahmad ,  Yang Yang ,  Marc Holness

IPC分类号： H04L12/26

CPC分类号： H04L12/437 ,  H04L12/18 ,  H04L12/423 ,  H04L41/0659 ,  H04L41/26 ,  H04L45/22 ,  H04L45/28

摘要： Provided is a failure recovery method in a non-revertive mode of an Ethernet ring network. In an Ethernet ring network, link priorities between nodes or node priorities are determined based on media access control (MAC) addresses and the nodes having blocked ports are determined after failures are recovered from based on the priorities so that the blocked ports can be distributed.

摘要翻译： 提供以太网环网的非回复模式的故障恢复方法。 在以太网环网中，基于媒体访问控制（MAC）地址确定节点或节点优先级之间的链路优先级，并根据优先级从故障恢复后确定具有阻塞端口的节点，从而可以分发阻塞端口。

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：US20090168671A1

公开(公告)日：2009-07-02

申请号：US12344355

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： H04L12/28

CPC分类号： H04L12/462 ,  H04L12/42

摘要： To enable an Ethernet ring to be dual homed into a spanning tree protocol controlled Ethernet network, spanning tree control packets (Bridged Protocol Data Units or BPDUs) are transported as data frames over the Ethernet ring. This allows the Ethernet ring to appear as a single link to the spanning tree protocol so that the spanning tree can extend over the link. However, since the spanning tree does not have visibility as to the internal structure of the ring, the spanning tree cannot block links on the Ethernet ring network. Conversely, BPDUs from the Ethernet ring are not transmitted into the Ethernet domain that is implementing the spanning tree, so that the spanning tree is not affected by the control mechanism in place on the Ethernet ring network.

摘要翻译： 为了使以太网环双重归属到生成树协议控制的以太网，生成树控制报文（桥接协议数据单元或BPDU）通过以太网环路作为数据帧传输。 这允许以太网环显示为生成树协议的单个链路，以便生成树可以在链路上延伸。 然而，由于生成树对环的内部结构没有可见性，所以生成树不能阻塞以太网环网上的链路。 相反，来自以太网环的BPDU不会传输到实现生成树的以太网域中，生成树不受以太网环网上的控制机制的影响。