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1. 发明授权

US5729527A Fault management in a multichannel transmission system 失效
标题翻译：多通道传输系统中的故障管理
公开(公告)号：US5729527A
公开(公告)日：1998-03-17
申请号：US618652
申请日：1996-03-19
申请人： Ornan Alexander Gerstel , William Eric Hall , Rajiv Ramaswami , Galen Hajime Sasaki
发明人： Ornan Alexander Gerstel , William Eric Hall , Rajiv Ramaswami , Galen Hajime Sasaki
IPC分类号： H04Q11/00 , H04L12/50
CPC分类号： H04Q11/0001 , H04J14/0297 , H04J14/0278 , H04J14/0282
摘要： Efficient methods for rerouting failed channels on to spare channels in a multichannel transmission system are described. One method uses a minimal amount of rerouting to reroute all the channels if one or two line cards fail. Another set of methods reroute up to two failed channels on to spare channels in the event of channel failures. With this method only the failed channels are rerouted. However the failed channels may have to be routed through a slightly larger, but minimal, number of additional hops than with the first method.
摘要翻译：描述了在多信道传输系统中重新路由故障信道到备用信道的有效方法。如果一个或两个线卡出现故障，一种方法使用最少量的重新路由重新路由所有通道。在发生频道故障的情况下，另一组方法可重新路由多达两个故障通道以备用通道。使用此方法，只有失败的通道被重新路由。然而，与第一种方法相比，故障通道可能必须通过稍大，但最小的额外跳数来路由。

2. 发明授权

US06256293B1 Fault management in a multichannel transmission system 失效
标题翻译：多通道传输系统中的故障管理
公开(公告)号：US06256293B1
公开(公告)日：2001-07-03
申请号：US09039665
申请日：1998-03-16
申请人： Ornan Alexander Gerstel , William Eric Hall , Rajiv Ramaswami , Galen Hajime Sasaki
发明人： Ornan Alexander Gerstel , William Eric Hall , Rajiv Ramaswami , Galen Hajime Sasaki
IPC分类号： G01R3108
CPC分类号： H04Q11/0001 , H04J14/0278 , H04J14/0282 , H04J14/0297
摘要： Efficient methods for rerouting failed channels on to spare channels in a multichannel transmission system are described. One method uses a minimal amount of rerouting to reroute all the channels if one or two line cards fail. Another set of methods reroute up to two failed channels on to spare channels in the event of channel failures. With this method only the failed channels are rerouted. However the failed channels may have to be routed through a slightly larger, but minimal, number of additional hops than with the first method.
摘要翻译：描述了在多信道传输系统中重新路由故障信道到备用信道的有效方法。一种方法使用最少量的重新路由来重新路由所有通道，如果一个或两个线卡故障。另一组方法在通道故障的情况下重新路由多达两个故障通道到备用通道。使用此方法，只有失败的通道被重新路由。然而，与第一种方法相比，故障通道可能必须通过稍大，但最小的额外跳数来路由。

3. 发明授权

US5867289A Fault detection for all-optical add-drop multiplexer 失效
标题翻译：全光分插复用器故障检测
公开(公告)号：US5867289A
公开(公告)日：1999-02-02
申请号：US772789
申请日：1996-12-24
申请人： Ornan Alexander Gerstel , Chung-Sheng Li , Rajiv Ramaswami , Chaoyu Yue
发明人： Ornan Alexander Gerstel , Chung-Sheng Li , Rajiv Ramaswami , Chaoyu Yue
IPC分类号： H04B10/02 , H04B10/08 , H04J14/02 , H04Q11/00
CPC分类号： H04B10/038 , H04B10/07 , H04B10/077 , H04B10/0773 , H04J14/0212 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0283 , H04Q11/0005 , H04B2210/078 , H04J14/028 , H04J14/0282 , H04J14/0284 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0083
摘要： A fault detecting apparatus and method for a network node of an optical transmission system receives a wavelength division multiplexed (WDM) optical signal which includes a group of optical channels. The network node includes an optical demultiplexer, optical switch, optical multiplexer, and an optical channel add/drop device. Supervisory optical signals having a different wavelength than the wavelengths of the group of optical channels are generated and spliced with each optical channel by the optical demultiplexer. The supervisory channel optical power is tapped off at various points in the network node, such as the output optical channels of the demultiplexer, dropped optical channel outputs, output optical channels from the optical switch, and the output WDM optical signal of the multiplexer. The supervisory channels are monitored by a wavemeter for bypass lightpaths and dropped lightpaths. Added optical channels are monitored by monitoring a portion of the signal power in the added lightpath of the added optical channel. If the wavemeter detects the absence of the supervisory signal, or the portion of the added optical channel, this indicates a fault condition and the network control is notified to effect correction of the fault.
摘要翻译：用于光传输系统的网络节点的故障检测装置和方法接收包括一组光信道的波分复用（WDM）光信号。网络节点包括光解复用器，光开关，光复用器和光信道分插装置。通过光解复用器产生与各光信道的波长不同的波长的监控光信号，并与每个光信道拼接。监控信道光功率在网络节点的各个点被分路，例如解复用器的输出光信道，丢弃光信道输出，从光开关输出光信道，以及多路复用器的输出WDM光信号。监控通道由波导计监测，用于旁路光路和掉落的光路。通过监视添加的光通道的增加的光路中的信号功率的一部分来监视添加的光通道。如果波分计检测到监控信号不存在，或者所添加的光信道的部分，则表示故障状况，通知网络控制以进行故障校正。

4. 发明授权

US5793746A Fault-tolerant multichannel multiplexer ring configuration 失效
标题翻译：容错多通道多路复用器环配置
公开(公告)号：US5793746A
公开(公告)日：1998-08-11
申请号：US639454
申请日：1996-04-29
申请人： Ornan Alexander Gerstel , Rajiv Ramaswami
发明人： Ornan Alexander Gerstel , Rajiv Ramaswami
IPC分类号： H04L1/22 , H04L12/437 , H04Q11/04
CPC分类号： H04Q11/0478 , H04J14/0283 , H04J14/0295 , H04L1/22 , H04L12/437 , H04J2203/0042 , H04J2203/006
摘要： A wiring scheme for providing loop-back capability for individual failed channels around a ring network composed of nodes with limited space-switching. With this invention each node has a switch for interconnecting channels between incident links of the node. Each secure channel i has a backup channel B(i). In the normal mode of operation, the switch is configured so that the ports for channel B(i) of the incident links are connected to each other. Upon failure of channel i in one of the incident links of the node, the port for channel i of the failed link is connected to the port for channel B(i) on the other incident link of the node. With this invention when there is a failure of channel i on one of the links, the connection using this failed channel can be restored by switch configurations at only two nodes of the ring since the backup channels at the other nodes are already connected to each other.
摘要翻译：一种用于为环形网络周围的单个故障通道提供环回功能的布线方案，该环网由具有有限空间切换的节点组成。利用本发明，每个节点具有用于互连节点的事件链路之间的信道的交换机。每个安全通道i具有备用通道B（i）。在正常操作模式下，开关被配置为使得入口链路的通道B（i）的端口彼此连接。在节点的一个事件链路中的信道i发生故障时，故障链路的信道i的端口连接到节点的另一个事件链路上的信道B（i）的端口。利用本发明，当在其中一个链路上存在信道i的故障时，使用该故障信道的连接可以通过仅在环的两个节点处的交换机配置来恢复，因为其他节点处的备用信道已经彼此连接。

5. 发明授权

US09698910B2 Network server layer providing disjoint channels in response to client-layer disjoint path requests 有权
公开(公告)号：US09698910B2
公开(公告)日：2017-07-04
申请号：US14726585
申请日：2015-05-31
申请人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
发明人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
IPC分类号： H04J14/00 , H04B10/27 , H04L29/06 , H04L12/54 , H04L12/723 , H04J14/02 , H04L12/735 , H04B10/25 , H04Q11/00
CPC分类号： H04B10/27 , H04B10/25 , H04J14/0267 , H04L45/128 , H04L45/50 , H04L67/42 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0077
摘要： In one embodiment, a network server layer provides disjoint channels in response to client-layer disjoint path requests. For example, the network layer can be an optical network, and the client layer may be a packet switching layer (e.g., label switching, Internet Protocol). In one embodiment, a server-layer node receives a client-layer disjoint path request to provide a server-layer channel through a server-layer network. The client-layer disjoint path request includes an identifier corresponding to an existing client-layer path that traverses a current channel through the server-layer network that does not include the server-layer node. The server-layer network determines a particular channel through the server-layer network that is disjoint to the current channel based on route information of the current channel, and then signaling is performed within the server-layer network to establish the particular channel.

6. 发明授权

US09634924B2 Server-layer shared link risk group analysis to identify potential client-layer network connectivity loss 有权
公开(公告)号：US09634924B2
公开(公告)日：2017-04-25
申请号：US13792130
申请日：2013-03-10
申请人： Clarence Filsfils , Ornan Alexander Gerstel , Jean-Philippe Vasseur
发明人： Clarence Filsfils , Ornan Alexander Gerstel , Jean-Philippe Vasseur
IPC分类号： G06F15/173 , H04L12/707 , H04L12/709
CPC分类号： H04L45/22 , H04L45/245 , Y02D50/30
摘要： In one embodiment, a particular device within a client-layer network maintains client-layer topology information including server-layer Shared Risk Link Group (SRLG) information of server-layer devices and links in a server-layer network associated with client-layer links and client-layer nodes in the client-layer network. A determination is made to discover if there is an alternative client-layer path to an established client-layer path between a first packet switching device and a second packet switching device if all server-layer resources of any particular server-layer SRLG of a plurality of total server-layer SRLGs associated with the established client-layer path become unavailable. In one embodiment, the plurality of total server-layer SRLGs includes: an SRLG of a same optical node, an SRLG of a same optical fiber, an SRLG of co-located plurality of optical nodes, and/or an SRLG of co-located plurality of optical fibers.

7. 发明授权

US08521026B2 Registration of device characteristics with optical layer for use in establishing connections through an optical network 有权
标题翻译：用于通过光网络建立连接的光层注册设备特性
公开(公告)号：US08521026B2
公开(公告)日：2013-08-27
申请号：US12355921
申请日：2009-01-19
申请人： Ornan Alexander Gerstel , David Delano Ward
发明人： Ornan Alexander Gerstel , David Delano Ward
IPC分类号： H04B10/08 , H04B10/00 , H04J14/02
CPC分类号： H04J14/02 , H04J14/0254 , H04J14/0256 , H04J14/0267 , H04J14/0275 , H04Q11/0062 , H04Q2011/0079 , H04Q2011/0086 , H04Q2011/0088
摘要： Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with registration of optical device characteristics of optical network devices with an optical control layer of the optical network for use in establishing compatible connections through the optical network. Especially end network devices and internal network optical devices that regenerate the optical signal register their communication capabilities of their optical interfaces with the optical control layer of an optical network. This registration allows a light path to be established through the optical network which is compatible with the registered capabilities. The optical control layer may be centralized in an optical layer server and/or distributed among optical devices in the optical network, such as on control processors in multiple, optical layer devices.
摘要翻译：公开了尤其涉及与光网络设备的光学设备特性的注册相关联的方法，装置，计算机存储介质，机制和装置，其中光学网络的光学控制层用于通过光网络建立兼容的连接。特别是终端网络设备和再生光信号的内部网络光学设备将其光接口的通信能力与光网络的光控制层进行寄存。该注册允许通过与注册能力兼容的光网络建立光路。光控制层可以集中在光层服务器中和/或分布在光网络中的光设备之间，例如在多个光层设备中的控制处理器上。

8. 发明授权

US09258174B1 Server-layer path negotiation between client and server network layers 有权
标题翻译：客户端和服务器网络层之间的服务器层路径协商
公开(公告)号：US09258174B1
公开(公告)日：2016-02-09
申请号：US13802053
申请日：2013-03-13
申请人： Ornan Alexander Gerstel , Zafar Ali , Walid Wakim , Clarence Filsfils
发明人： Ornan Alexander Gerstel , Zafar Ali , Walid Wakim , Clarence Filsfils
IPC分类号： G06F15/16 , H04L29/06 , H04Q11/00 , H04J14/02 , H04L12/701
CPC分类号： H04L29/06537 , H04J14/0227 , H04J14/0267 , H04L45/00 , H04L45/10 , H04L45/30 , H04L69/24 , H04Q11/0062 , H04Q2011/0081
摘要： In one embodiment, negotiation is performed between the client-layer (e.g., Layer-3 or Layer-2) network and the server-layer (e.g., optical) network to establish a path through the server-layer network with desired server-layer characteristics. This negotiation may include a first iteration of a client-layer request of one or more first server-layer characteristics followed by a negative server-layer response, and a subsequent iteration of a particular client-layer request of one or more particular server-layer characteristics followed by a positive server-layer response, with said particular server-layer characteristics including at least one relaxed server-layer characteristic of said first server-layer characteristics. One embodiment establishes, in response a client-layer request to the server-layer network responsive to the positive server-layer response, a server-layer path between said two client-layer devices that satisfies said particular server-layer characteristics, but does not satisfy said first server-layer characteristics.
摘要翻译：在一个实施例中，在客户端层（例如，第3层或第2层）网络和服务器层（例如，光纤）网络之间进行协商，以建立通过服务器层网络的路径，其中期望的服务器层特点该协商可以包括一个或多个第一服务器层特征的客户端层请求的第一次迭代，随后是否定的服务器层响应，以及一个或多个特定服务器层的特定客户端层请求的后续迭代所述特征随后是积极的服务器层响应，所述特定服务器层特性包括所述第一服务器层特性的至少一个放宽的服务器层特性。响应于服务器层网络响应于正服务器层响应的客户层请求，建立满足所述特定服务器层特性的所述两个客户端层设备之间的服务器层路径，但是不满足第一个服务器层的特点。

9. 发明申请

US20140270771A1 Network Server Layer Providing Disjoint Channels in Response to Client-Layer Disjoint Path Requests 有权
标题翻译：网络服务器层提供响应于客户端层不连续路径请求的不相交通道
公开(公告)号：US20140270771A1
公开(公告)日：2014-09-18
申请号：US13801667
申请日：2013-03-13
申请人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
发明人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
IPC分类号： H04B10/25
CPC分类号： H04B10/27 , H04B10/25 , H04J14/0267 , H04L45/128 , H04L45/50 , H04L67/42 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0077
摘要： In one embodiment, a network server layer provides disjoint channels in response to client-layer disjoint path requests. For example, the network layer can be an optical network, and the client layer may be a packet switching layer (e.g., label switching, Internet Protocol). In one embodiment, a server-layer node receives a client-layer disjoint path request to provide a server-layer channel through a server-layer network. The client-layer disjoint path request includes an identifier corresponding to an existing client-layer path that traverses a current channel through the server-layer network that does not include the server-layer node. The server-layer network determines a particular channel through the server-layer network that is disjoint to the current channel based on route information of the current channel, and then signaling is performed within the server-layer network to establish the particular channel.
摘要翻译：在一个实施例中，网络服务器层响应于客户端层不相交路径请求而提供不相交的信道。例如，网络层可以是光网络，并且客户端层可以是分组交换层（例如，标签交换，因特网协议）。在一个实施例中，服务器层节点接收客户端层不相交路径请求，以通过服务器层网络提供服务器层信道。客户端层不相交路径请求包括对应于穿过不包括服务器层节点的服务器层网络的当前信道的现有客户端层路径的标识符。服务器层网络基于当前信道的路由信息，通过服务器层网络确定与当前信道不相关的特定信道，然后在服务器层网络内执行信令以建立特定信道。

10. 发明申请

US20140258486A1 Server-Layer Shared Link Risk Group Analysis to Identify Potential Client-Layer Network Connectivity Loss 有权
标题翻译：服务器层共享链路风险组分析来识别潜在的客户端层网络连通性损失
公开(公告)号：US20140258486A1
公开(公告)日：2014-09-11
申请号：US13792130
申请日：2013-03-10
申请人： Clarence Filsfils , Ornan Alexander Gerstel , Jean-Philippe Vasseur
发明人： Clarence Filsfils , Ornan Alexander Gerstel , Jean-Philippe Vasseur
IPC分类号： H04L12/56
CPC分类号： H04L45/22 , H04L45/245 , Y02D50/30
摘要： In one embodiment, a particular device within a client-layer network maintains client-layer topology information including server-layer Shared Risk Link Group (SRLG) information of server-layer devices and links in a server-layer network associated with client-layer links and client-layer nodes in the client-layer network. A determination is made to discover if there is an alternative client-layer path to an established client-layer path between a first packet switching device and a second packet switching device if all server-layer resources of any particular server-layer SRLG of a plurality of total server-layer SRLGs associated with the established client-layer path become unavailable. In one embodiment, the plurality of total server-layer SRLGs includes: an SRLG of a same optical node, an SRLG of a same optical fiber, an SRLG of co-located plurality of optical nodes, and/or an SRLG of co-located plurality of optical fibers.
摘要翻译：在一个实施例中，客户端层网络内的特定设备维护客户层拓扑信息，包括服务器层设备的服务器层共享风险链路组（SRLG）信息和与客户端层链路相关联的服务器层网络中的链路和客户端层网络中的客户端层节点。如果多个任何特定服务器层SRLG的所有服务器层资源的所有服务器层资源，则确定是否存在在第一分组交换设备和第二分组交换设备之间建立的客户端层路径的备选客户端层路径与建立的客户端层路径相关联的总服务器层SRLG将不可用。在一个实施例中，多个总服务器层SRLG包括：相同光节点的SRLG，相同光纤的SRLG，共同定位的多个光节点的SRLG和/或共同定位的SRLG 多根光纤。

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