公开(公告)号：US07274656B2

公开(公告)日：2007-09-25

申请号：US10191548

申请日：2002-07-10

Applicant: Byoung-Joon Lee ,  James Benson Bacque

Inventor： Byoung-Joon Lee ,  James Benson Bacque

IPC: G01R31/08

CPC classification number: H04J3/085 ,  H04L45/00 ,  H04L45/22

Abstract: A failure protection between interconnected adjacent Resilient Packet Rings (RPRs) in a multiple RPR network is provided. Two paths, a regular message path and a protection path, are provided between two adjacent RPRs. The regular path is used for routing inter-ring messages when no failure has occurred on the path. Messages are rerouted through the protection path when a failure occurs on the regular path. Each of these paths has two RPR interface nodes (one for each RPR) that are connected to an interconnection device (a layer 2 bridge or a layer-3 router) through interconnection links. Procedures for detecting failures and generating notifications for message rerouting and fault reports are executed at the interconnection devices. The procedures use periodic keep alive messages for diagnosing network segment and interconnection device failures. The fault detection and message rerouting are accomplished in less than 50 ms.

Abstract translation: 提供了多RPR网络中相互连接的相邻弹性分组环（RPR）之间的故障保护。 在两个相邻RPR之间提供两条路径，一条常规消息路径和一条保护路径。 常规路径用于在路径上没有发生故障时路由环回消息。 当常规路径发生故障时，消息将通过保护路径重新路由。 这些路径中的每一个具有通过互连链路连接到互连设备（第二层桥接器或第三层路由器）的两个RPR接口节点（每个RPR一个）。 在互连设备上执行用于检测故障并产生消息重新路由和故障报告的通知的过程。 该过程使用定期保持活动消息来诊断网段和互连设备故障。 故障检测和消息重新路由在不到50ms的时间内完成。

公开(公告)号：US07248798B2

公开(公告)日：2007-07-24

申请号：US10259290

申请日：2002-09-30

Applicant: Paul David Obeda ,  Derrick Remedios ,  Ping Wai Wan ,  Colin Geoffrey Kelly

Inventor： Paul David Obeda ,  Derrick Remedios ,  Ping Wai Wan ,  Colin Geoffrey Kelly

IPC: H04B10/08 ,  H04B10/12 ,  H04B10/04

CPC classification number: H04J14/0227 ,  H04B10/00 ,  H04B2210/071 ,  H04B2210/074 ,  H04B2210/075 ,  H04B2210/077 ,  H04B2210/078 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0276 ,  H04J14/0278 ,  H04J14/0298

Abstract: A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.

Abstract translation: 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。

公开(公告)号：US07187652B2

公开(公告)日：2007-03-06

申请号：US10152832

申请日：2002-05-23

Applicant: Byoung-Joon Lee ,  Sudhakar Ganti ,  Anand Srinivasan ,  Walter Joseph Carpini ,  Udo Mircea Neustadter ,  Cuong Tu Dang ,  Vincent Chi Chiu Wong

Inventor： Byoung-Joon Lee ,  Sudhakar Ganti ,  Anand Srinivasan ,  Walter Joseph Carpini ,  Udo Mircea Neustadter ,  Cuong Tu Dang ,  Vincent Chi Chiu Wong

IPC: G01R31/08

CPC classification number: H04L49/25 ,  H04L45/24 ,  H04L49/254 ,  H04L49/30

Abstract: A routing system and method are provided which use a composite cost in identifying routes. This allows a simple way of identifying the best route taking multiple metrics into account for each link simultaneously. The system allows for the inclusion of pruning constraints, and allows for various objectives such as bin packing or load balancing to be achieved.

Abstract translation: 提供了一种使用复合成本来识别路由的路由系统和方法。 这允许一种简单的方式来识别为每个链路同时考虑多个度量的最佳路由。 该系统允许包括修剪约束，并且允许实现各种目标，例如箱包装或负载平衡。

公开(公告)号：US07126921B2

公开(公告)日：2006-10-24

申请号：US10101383

申请日：2002-03-20

Applicant: Barry Ding Ken Mark ,  Walter Joseph Carpini ,  Hanh Thi

Inventor： Barry Ding Ken Mark ,  Walter Joseph Carpini ,  Hanh Thi

IPC: G01R31/08

CPC classification number: H04L45/02 ,  H04L45/028 ,  H04L45/28

Abstract: A reliable packet network is constructed with nodes and links where the nodes use a method for fast distribution of link state information. This permits a rapid update of the routing information at all nodes in case of a link failure, minimizing the number of lost packets.

公开(公告)号：US07126907B2

公开(公告)日：2006-10-24

申请号：US09943005

申请日：2001-08-31

Applicant: Walter Joseph Carpini ,  Barry Ding Ken Mark ,  Angelica Grace Emelie Kasvand Harris

Inventor： Walter Joseph Carpini ,  Barry Ding Ken Mark ,  Angelica Grace Emelie Kasvand Harris

IPC: H04L1/22

CPC classification number: H04L45/28 ,  H04L45/00 ,  H04L45/22 ,  H04L45/50

Abstract: A communication network is provided having source and destination switching routers connected by two different communication paths. A primary label switched path is established on one of the communication paths and a secondary label switched path is established on the other label switched path. The source switching router can be enabled to place one or more data flows within the primary label switched path and can be enabled to place one or more of the same data flows within the secondary label switched path. The destination switching router stores a label identifying each data flow and a forwarding instruction and can be enabled to reference data carried within the primary or secondary LSP with the appropriate data flow label.

公开(公告)号：US07092360B2

公开(公告)日：2006-08-15

申请号：US10028286

申请日：2001-12-28

Applicant: Roxan Saint-Hilaire ,  Boris Hristov

Inventor： Roxan Saint-Hilaire ,  Boris Hristov

IPC: H04L12/26 ,  H04L12/56 ,  H04F11/00

CPC classification number: G06F11/3447 ,  G06F11/3466 ,  G06F2201/88

Abstract: A monitor for monitoring the operation of a scheduler for controlling the departure of data cells is provided, comprising a detector for detecting the state of an internal element of the scheduler during a test, and determining means for determining whether the scheduler is operating as intended based on the detected state of the internal element.

公开(公告)号：US07072561B2

公开(公告)日：2006-07-04

申请号：US10618604

申请日：2003-07-15

Applicant: Gordon Bruce Scarth ,  Robert Michael Bierman ,  Steve Joseph Grabner

Inventor： Gordon Bruce Scarth ,  Robert Michael Bierman ,  Steve Joseph Grabner

IPC: G02B6/00

CPC classification number: H04B10/077 ,  H04B10/07955

Abstract: A method and apparatus are disclosed for operating an eVOA by modulating its attenuation. If an optical signal power is below a loss of signal (LOS) power threshold the eVOA attenuation is set to a maximum attenuation and then, periodically and quickly decreased and increased in steps while checking for the presence of optical signals above the LOS power threshold. The method is also used for operating a multiplicity of eVOAs while minimizing the risk of damage to optical network equipment.

Abstract translation: 公开了一种通过调制其衰减来操作eVOA的方法和装置。 如果光信号功率低于信号损失（LOS）功率阈值，则将eVOA衰减设置为最大衰减，然后周期性地快速地减小并逐步增加，同时检查高于LOS功率阈值的光信号的存在。 该方法还用于操作多个eVOA，同时最小化对光网络设备的损坏风险。

公开(公告)号：US07038837B2

公开(公告)日：2006-05-02

申请号：US10443955

申请日：2003-05-23

Applicant: Eddie Kai Ho Ng ,  Colin Geoffrey Kelly

Inventor： Eddie Kai Ho Ng ,  Colin Geoffrey Kelly

IPC: H01S3/00 ,  H04B10/00 ,  G06F3/00

CPC classification number: H04B10/2933 ,  H04B10/2935

Abstract: A method for determining locations and gain settings of amplifiers in an optical network is provided. The method comprises evaluating allowable amplifier locations, randomly generating sets of amplifier locations from the allowable amplifier locations, and applying genetic operations to the sets of amplifier locations until a predetermined exit condition is satisfied. This systematic method is applicable to a variety of network topologies and takes into account existing network limitations. In one embodiment, the method for determining the locations and gain settings of the amplifiers uses the amount of operating margin in the network to select sets of locations to be eliminated. In another embodiment, the method takes into account and determines the placement of dispersion compensation modules (DCMs), choices of which are provided by DCM placement procedures.

Abstract translation: 提供了一种用于确定光网络中的放大器的位置和增益设置的方法。 该方法包括评估允许的放大器位置，从允许的放大器位置随机生成放大器位置集合，以及将遗传操作应用于放大器位置集合，直到满足预定的退出条件。 该系统方法适用于各种网络拓扑，并考虑到现有的网络限制。 在一个实施例中，用于确定放大器的位置和增益设置的方法使用网络中的操作余量来选择要消除的位置集合。 在另一个实施例中，该方法考虑并确定色散补偿模块（DCM）的位置，其选择由DCM放置过程提供。

公开(公告)号：US06983294B2

公开(公告)日：2006-01-03

申请号：US10120435

申请日：2002-04-12

Applicant: David Joseph Jones ,  Douglas Heath Patriarche

Inventor： David Joseph Jones ,  Douglas Heath Patriarche

IPC: G06F17/30

CPC classification number: G06F11/2005 ,  G06F11/1658 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04L45/586 ,  H04L45/60 ,  Y10S707/99953

Abstract: A method and apparatus are provided for improving redundancy and load sharing in control cards in the control plane of a communication node. An active control card which receives a request passes the request to the inactive control card for processing if and only if the inactive control card is synchronized with the active control card and the inactive control card is able to process the request. Redundancy and load sharing are further improved if the active control card separates the processing of managing the request and the determination of a response to the request onto separate processors on the control card. In one embodiment, the control cards are OSPF modules in a router. Redundancy is effected by more accurately synchronizing the link state database of each OSPF module, and by allowing the state of each neighboring router to be determined only by the active OSPF module and not independently by any inactive OSPF module.

Abstract translation: 提供一种用于改善通信节点的控制平面中的控制卡中的冗余和负载共享的方法和装置。 接收请求的主动控制卡将该请求传送到非活动控制卡，用于处理，当且仅当非活动控制卡与主动控制卡同步时，非活动控制卡才能处理该请求。 如果主动控制卡将管理请求的处理和对请求的响应的确定分离到控制卡上的单独的处理器上，则进一步改善冗余和负载共享。 在一个实施例中，控制卡是路由器中的OSPF模块。 通过更精确地同步每个OSPF模块的链路状态数据库，并且通过允许每个相邻路由器的状态仅由主动OSPF模块确定而不是由任何不活动的OSPF模块独立地实现，从而实现冗余。

公开(公告)号：US06981200B2

公开(公告)日：2005-12-27

申请号：US10004441

申请日：2001-12-05

Applicant: Edward Aung Kyi Maung ,  Bijan Raahemi ,  Thomas George Zboril ,  Kizito Gysbertus Antonius Van Asten

Inventor： Edward Aung Kyi Maung ,  Bijan Raahemi ,  Thomas George Zboril ,  Kizito Gysbertus Antonius Van Asten

IPC: H03M13/03 ,  H04L1/00 ,  H04L1/22 ,  H04L12/56 ,  H03M13/00

CPC classification number: H04L1/004 ,  H04L1/0063 ,  H04L1/0065 ,  H04L1/0072

Abstract: A method for transmission of digital data in a form of data packets through links carrying data packets with error correction, includes the steps of enveloping a sent packet data, first with an error detection scheme, and secondly with an error correction scheme. The error correction applies to both the sent packet data and to the error detection field. If an error in either of these fields occurs, the error correction scheme attempts to correct it. Error correction may fail in which case the packet is dropped. If error correction does not fail, there is still a possibility that there was an error which error correction did not correct correctly, or did not detect at all because the power of the correction scheme was exceeded. In these cases, the error detection scheme provides a method or means to detect such errors and drop the packet. Corresponding interconnect system with error correction, encode and decode for such are also provided.

Abstract translation: 通过带有纠错数据包的链路通过数据包形式发送数字数据的方法包括以下步骤：首先用错误检测方案包封发送的分组数据，其次是纠错方案。 误差校正适用于发送的分组数据和错误检测字段。 如果发生任何一个字段中的错误，则纠错方案会尝试更正错误。 错误纠正可能会失败，在这种情况下，数据包被丢弃。 如果错误纠正不会失败，仍然存在错误纠正未能正确校正的错误，或者由于校正方案的功率被超过而完全没有检测到的错误。 在这些情况下，错误检测方案提供了检测这种错误并丢弃数据包的方法或手段。 还提供了具有纠错，编码和解码的相应互连系统。