公开(公告)号：US20120033666A1

公开(公告)日：2012-02-09

申请号：US13264764

申请日：2009-05-01

申请人： Marc Holness ,  Bashar Abdullah

发明人： Marc Holness ,  Bashar Abdullah

IPC分类号： H04L12/56

CPC分类号： H04L12/437 ,  H04L12/42 ,  H04L12/462 ,  H04L45/00 ,  H04L45/16 ,  H04L49/102

摘要： A method of routing traffic through a packet network having a mesh physical topography. At least two types of network primitive are defined, each type of network primitive providing a respective model of traffic forwarding through at least two neighbour nodes of the network. A network model encompassing at least a portion of the network is constructed using a set of two or more interconnected network primitives. The network model has nodes and links corresponding to respective nodes and lines of the network. Respective forwarding information is computed for each node of the network model. For each node of the network model, the respective computed forwarding information is installed in a forwarding database of the corresponding node of the network, such that traffic is forwarded by each node of the network in accordance with the respective computed forwarding information.

摘要翻译： 一种通过具有网格物理地形的分组网络路由业务的方法。 定义了至少两种类型的网络原语，每种类型的网络原语通过网络的至少两个相邻节点提供相应的流量转发模型。 包含网络的至少一部分的网络模型使用一组两个或更多个互连网络基元来构建。 网络模型具有对应于网络的相应节点和线路的节点和链路。 针对网络模型的每个节点计算相应的转发信息。 对于网络模型的每个节点，相应的计算出的转发信息被安装在网络的对应节点的转发数据库中，使得根据相应的计算的转发信息，由网络的每个节点转发流量。

公开(公告)号：US07792044B2

公开(公告)日：2010-09-07

申请号：US12390488

申请日：2009-02-22

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

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

IPC分类号： H04L12/26 ,  H04L1/00 ,  H04L1/16 ,  H04J3/14

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：US20090168647A1

公开(公告)日：2009-07-02

申请号：US12344362

申请日：2008-12-26

申请人： Marc Holness ,  Abdullah Bashar

发明人： Marc Holness ,  Abdullah Bashar

IPC分类号： H04L12/24 ,  H04L12/28

CPC分类号： H04L12/437

摘要： Interworking an Ethernet Ring network with an Ethernet network with traffic engineered trunks (PBT network) enables traffic engineered trunks to be dual homed to the Ethernet ring network to enable for protection switching between active and backup trunk paths in the PBT network. In one embodiment, the active path will terminate at a first bridge node on the Ethernet ring network and the backup path will terminate at a second bridge node on the Ethernet ring network. Trunk state information is exchanged between the bridge nodes to enable the bridge nodes to determine which of the active and backup paths should be used to forward data on the trunk. Upon a change in trunk state, a flush message is transmitted on the Ethernet ring network to enable the nodes on the Ethernet ring network to relearn the path to the new responsible bridge node.

摘要翻译： 将以太网环网与具有流量工程中继线（PBT网络）的以太网环网互通使得流量工程中继线能够双重归属到以太网环网，以实现PBT网络中主备和中继路径之间的保护倒换。 在一个实施例中，活动路径将终止在以太网环网上的第一网桥节点处，并且备用路径将终止在以太网环网上的第二网桥节点处。 中继线状态信息在网桥节点之间进行交换，以使桥接节点能够确定哪个主动和备用路径应用于在中继线上转发数据。 在中继状态发生变化时，以太网环网上会发送刷新消息，使以太网环网上的节点重新获取新负责的桥接节点的路径。

公开(公告)号：US20060031482A1

公开(公告)日：2006-02-09

申请号：US11137015

申请日：2005-05-25

申请人： Dinesh Mohan ,  Marc Holness

发明人： Dinesh Mohan ,  Marc Holness

IPC分类号： G06F15/173 ,  G06F11/00

CPC分类号： G06F11/0772 ,  H04L12/4641 ,  H04L41/0631 ,  H04L41/0663 ,  H04L41/0677 ,  H04L41/0686 ,  Y02D30/30

摘要： Connectivity fault notification is provided by generating an alarm indication signal at a device that is logically adjacent to the fault, and forwarding the alarm indication signal upward through various levels to at least one client level entity. The alarm indication signal may be suppressed at any level for a service instance if service is restored at that level, or if a protection path prevents disruption of the service instance at that level, or auto-suppressed at an originating node based on number of times transmitted or elapsed time. The alarm indication signal may include a point of failure indicator such as the MAC address of the device that generates the alarm indication signal, or a failed resource identity such as an IEEE 802.1AB LLDP MAC Service Access Point (“MSAP”). Further, the alarm indication signal may be employed to trigger use of the protection path.

摘要翻译： 通过在与故障逻辑上相邻的设备处产生报警指示信号，并将报警指示信号向上通过各种级别转发到至少一个客户端级实体来提供连接故障通知。 如果服务在该级别被恢复，或者如果保护路径防止在该级别的服务实例的中断或者在始发节点处基于次数自动抑制，则可以在服务实例的任何级别上抑制警报指示信号 传送或消逝时间。 报警指示信号可以包括诸如生成报警指示信号的设备的MAC地址或诸如IEEE 802.1AB LLDP MAC服务接入点（“MSAP”）之类的故障资源标识的故障点指示器。 此外，可以采用报警指示信号来触发保护路径的使用。

公开(公告)号：US20050071453A1

公开(公告)日：2005-03-31

申请号：US10741909

申请日：2003-12-19

申请人： Donald Ellis ,  Marc Holness ,  Paul Littlewood

发明人： Donald Ellis ,  Marc Holness ,  Paul Littlewood

IPC分类号： G06F15/173

CPC分类号： H04L43/00 ,  H04L41/0213 ,  H04L41/0631 ,  H04L41/5009 ,  H04L43/04

摘要： Described are a system and method for managing a service transported over a transport network. Service traffic is transmitted from a first network element to a second network element over a transport network. If one of the network elements detects a condition occurring in the transport network, the network element determines each service affected by the condition. Service traffic performance is measured at each of the first and second network elements. Each network element correlates its measure service traffic performance and the service to produce a performance of service (PoS) service metric. Each network element transmits its measured PoS service metric to the other network element over a service management channel. This enables each network element to correlate both performance (SPC) and fault (SFC) for both near and far end service metrics and enables a complete end to end service definition in support of a service level agreement (SLA).

摘要翻译： 描述了用于管理通过传输网络传送的服务的系统和方法。 服务流量通过传输网络从第一网络元件传输到第二网络元件。 如果网络元素中的一个检测到传输网络中发生的情况，则网络元件确定受条件影响的每个服务。 在第一和第二网络元件中的每一个处测量服务流量性能。 每个网元将其测量业务流量性能与业务相关联，以产生业务性能（PoS）业务量度。 每个网络元件通过服务管理信道将其测量的PoS服务度量发送到另一个网络元件。 这使得每个网络元件能够将近端和远端服务度量的性能（SPC）和故障（SFC）相关联，并实现完整的端到端服务定义以支持服务级别协议（SLA）。

公开(公告)号：US20050068890A1

公开(公告)日：2005-03-31

申请号：US10741296

申请日：2003-12-19

申请人： Donald Ellis ,  Paul Littlewood ,  Marc Holness

发明人： Donald Ellis ,  Paul Littlewood ,  Marc Holness

IPC分类号： H04L12/24 ,  H04L12/26

CPC分类号： H04L43/00 ,  H04L41/0631 ,  H04L41/5003 ,  H04L41/5009 ,  H04L41/5012 ,  H04L43/062 ,  H04L43/065

摘要： Described are a system and method for managing a service transported over a transport network between first and second service termination points. Packet traffic associated with the service is received at a service termination point connected to the transport network. Performance of the packet traffic is measured at the service termination point. The measured performance of the packet traffic and the service are correlated to produce a performance of service (PoS) service metric. Based on the PoS service metric, other service metrics associated with the service are correlated, including a rate of service (RoS) service metric and availability of service (AoS) service metric. These service metrics can be used to develop service level agreement (SLA) and service level metrics that define the operation of the service and operation of the network supporting those services.

摘要翻译： 描述了一种用于管理在第一和第二服务终止点之间通过传输网络传送的服务的系统和方法。 与服务相关联的分组流量在连接到传输网络的服务终止点处被接收。 在业务终端点测量报文流量的性能。 分组业务和业务的测量性能相关，以产生业务（PoS）业务度量的性能。 基于PoS服务度量，与服务相关联的其他服务度量被相关联，包括服务速率（RoS）服务度量和服务可用性（AoS）服务度量。 这些服务指标可用于开发服务级别协议（SLA）和服务级别度量，以定义支持这些服务的网络的服务和操作的运行。

公开(公告)号：US08862943B2

公开(公告)日：2014-10-14

申请号：US11137015

申请日：2005-05-25

申请人： Dinesh Mohan ,  Marc Holness

发明人： Dinesh Mohan ,  Marc Holness

IPC分类号： G06F11/00 ,  H04L12/46 ,  H04L12/24

CPC分类号： G06F11/0772 ,  H04L12/4641 ,  H04L41/0631 ,  H04L41/0663 ,  H04L41/0677 ,  H04L41/0686 ,  Y02D30/30

摘要： Connectivity fault notification is provided by generating an alarm indication signal at a device that is logically adjacent to the fault, and forwarding the alarm indication signal upward through various levels to at least one client level entity. The alarm indication signal may be suppressed at any level for a service instance if service is restored at that level, or if a protection path prevents disruption of the service instance at that level, or auto-suppressed at an originating node based on number of times transmitted or elapsed time. The alarm indication signal may include a point of failure indicator such as the MAC address of the device that generates the alarm indication signal, or a failed resource identity such as an IEEE 802.1AB LLDP MAC Service Access Point (“MSAP”). Further, the alarm indication signal may be employed to trigger use of the protection path.

摘要翻译： 通过在与故障逻辑上相邻的设备处产生报警指示信号，并将报警指示信号向上通过各种级别转发到至少一个客户端级实体来提供连接故障通知。 如果服务在该级别被恢复，或者如果保护路径防止在该级别的服务实例的中断或者在始发节点处基于次数自动抑制，则可以在服务实例的任何级别上抑制警报指示信号 传送或消逝时间。 报警指示信号可以包括诸如生成报警指示信号的设备的MAC地址或诸如IEEE 802.1AB LLDP MAC服务接入点（“MSAP”）之类的故障资源标识的故障点指示器。 此外，可以采用报警指示信号来触发保护路径的使用。

公开(公告)号：US08797845B2

公开(公告)日：2014-08-05

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： H04J1/16 ,  H04L1/00 ,  H04L12/26 ,  H04L12/28 ,  H04L12/16 ,  H04L12/437

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：US08792509B2

公开(公告)日：2014-07-29

申请号：US13549627

申请日：2012-07-16

申请人： David Wright Martin ,  Marc Holness

发明人： David Wright Martin ,  Marc Holness

IPC分类号： H04L12/28

CPC分类号： H04L45/28 ,  H04L12/4625 ,  H04L45/16 ,  H04L45/22

摘要： A method and system provide in-band protection switch signaling in a communication system arranged as a point-to-multipoint tree. The point-to-multipoint tree includes a root node communicatively coupled to a plurality of leaf nodes through both a working link and a protection link. Data is transferred through a current link of the point-to-multipoint tree. The current link is either the working link or the protection link. A fault is detected in the current link in the point-to-multipoint tree. Each leaf node in the point-to-multipoint tree is notified of the fault using the current link. Upon receiving the notification, the root node and each leaf node switch to the other link of the working link and the protection link.

摘要翻译： 一种方法和系统在布置为点对多点树的通信系统中提供带内保护交换机信令。 点对多点树包括通过工作链路和保护链路通信地耦合到多个叶节点的根节点。 数据通过点对多点树的当前链路传输。 当前链接是工作链路或保护链路。 在点对多点树中的当前链路中检测到故障。 点对多点树中的每个叶节点都使用当前链接通知故障。 收到通知后，根节点和每个叶节点切换到工作链路​​和保护链路的另一个链路。

公开(公告)号：US08737198B1

公开(公告)日：2014-05-27

申请号：US12027942

申请日：2008-02-07

申请人： Marc Holness ,  Donald Ellis ,  Nicola Benvenuti

发明人： Marc Holness ,  Donald Ellis ,  Nicola Benvenuti

IPC分类号： G01R31/08

CPC分类号： H04L45/28 ,  H04L12/437

摘要： Ethernet nodes, interconnected logically or physically to construct a closed loop, may be controlled using a control protocol that governs placement of blocks on the ring. The control protocol allows one of the nodes to be designated as a root node in normal operation. The root node will block data traffic on one of its ports on the ring to prevent a forwarding loop from being created on the ring. Each node on the ring performs link level connectivity detection and, upon detection of a failure, will send out a Failure Indication Message (FIM). When a node receives a FIM, it will flush its forwarding database associated with the ring and, if it is the root node, will remove the data block on the port. When the failure recovers, the nodes adjacent the failure will transmit a recovery indication message to allow the ring to revert to its normal state.

摘要翻译： 可以使用控制环上的块的放置的控制协议来控制在逻辑或物理上互连以构造闭环的以太网节点。 控制协议允许在正常操作中将其中一个节点指定为根节点。 根节点将阻止环上的一个端口上的数据流量，以防止在环上创建转发环路。 环上的每个节点执行链路级连接检测，并且在检测到故障时将发送故障指示消息（FIM）。 当节点接收到FIM时，它将刷新与环相关联的转发数据库，​​如果是根节点，将删除端口上的数据块。 当故障恢复时，与故障相邻的节点将发送恢复指示消息，以允许环恢复到其正常状态。