专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08315175B2 Router switch fabric protection using forward error correction 有权
标题翻译：路由器交换矩阵保护采用前向纠错
公开(公告)号：US08315175B2
公开(公告)日：2012-11-20
申请号：US10981841
申请日：2004-11-05
申请人： Thomas C. McDermott, III , Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Gregory S. Palmer , Keith W. Shaw , David Traylor , Dean E. Walker
发明人： Thomas C. McDermott, III , Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Gregory S. Palmer , Keith W. Shaw , David Traylor , Dean E. Walker
IPC分类号： H04L12/26
CPC分类号： H04Q11/0005 , H04J2203/0057 , H04L49/1523 , H04L49/208 , H04L49/254 , H04L49/357 , H04L2012/5627 , H04Q11/0066 , H04Q2011/0043
摘要： Instead of alternatively utilizing only one fabric or the other fabric of a redundant pair, both fabrics simultaneously transmit duplicate information, such that each packet forwarding module (PFM) receives the output of both fabrics simultaneously. In real time, an internal optics module (IOM) analyzes each information chunk coming out of a working zero switch fabric; simultaneously examines a parallel output of a working one duplicate switch fabric; and compares on a chunk-by-chunk basis the validity of each and every chunk from both switch fabrics. The IOM does this by examining forward error correction (FEC) check symbols encapsulated into each chunk. FEC check symbols allow correcting a predetermined number of bit errors within a chunk. If the chunk cannot be corrected, then the IOM provides indication to all PFMs downstream that the chunk is defective. Under such conditions, the PFMs select a chunk from the non-defective switch fabric. Under error-free normal conditions, however, the PFMs select a chunk arbitrarily from a default switch fabric. In this way, each chunk in real time is selected from a non-defective source and is thus guaranteed to be error free. Accordingly, if a switch fabric fails, no information chunks are lost anywhere in the system.
摘要翻译：代替替代地仅使用冗余对的一个结构或另一个结构，两个结构同时发送重复信息，使得每个分组转发模块（PFM）同时接收两个结构的输出。实时地，内部光学模块（IOM）分析从工作的零交换结构出来的每个信息块; 同时检查工作的一个重复交换矩阵的并行输出; 并且以逐块为基础比较来自两个交换结构的每个块的有效性。 IOM通过检查封装到每个块中的前向纠错（FEC）校验符号来实现。 FEC检查符号允许校正块内的预定数量的位错误。如果块不能被纠正，则IOM向下游的所有PFM提供指示该块是有缺陷的。在这种情况下，PFM从无缺陷的交换结构中选择一个块。然而，在无错误的正常条件下，PFM从默认的交换结构中任意选择一个块。以这种方式，从无缺陷源选择实时的每个块，并且因此被保证是无错误的。因此，如果交换机结构发生故障，系统中的任何地方都不会丢失任何信息块。

2. 发明授权

US06894970B1 Router switch fabric protection using forward error correction 失效
公开(公告)号：US06894970B1
公开(公告)日：2005-05-17
申请号：US09703064
申请日：2000-10-31
申请人： Thomas C. McDermott, III , Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Gregory S. Palmer , Keith W. Shaw , David Traylor , Dean E. Walker
发明人： Thomas C. McDermott, III , Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Gregory S. Palmer , Keith W. Shaw , David Traylor , Dean E. Walker
IPC分类号： H04L12/56 , H04Q11/00 , H04Q11/04 , H04L1/22 , H04L12/26
CPC分类号： H04Q11/0005 , H04J2203/0057 , H04L49/1523 , H04L49/208 , H04L49/254 , H04L49/357 , H04L2012/5627 , H04Q11/0066 , H04Q2011/0043
摘要： Instead of alternatively utilizing only one fabric or the other fabric of a redundant pair, both fabrics simultaneously transmit duplicate information, such that each packet forwarding module (PFM) receives the output of both fabrics simultaneously. In real time, an internal optics module (IOM) analyzes each information chunk coming out of a working zero switch fabric; simultaneously examines a parallel output of a working one duplicate switch fabric; and compares on a chunk-by-chunk basis the validity of each and every chunk from both switch fabrics. The IOM does this by examining forward error correction (FEC) check symbols encapsulated into each chunk. FEC check symbols allow correcting a predetermined number of bit errors within a chunk. If the chunk cannot be corrected, then the IOM provides indication to all PFMs downstream that the chunk is defective. Under such conditions, the PFMs select a chunk from the non-defective switch fabric. Under error-free normal conditions, however, the PFMs select a chunk arbitrarily from a default switch fabric. In this way, each chunk in real time is selected from a non-defective source and is thus guaranteed to be error free. Accordingly, if a switch fabric fails, no information chunks are lost anywhere in the system.

3. 发明授权

US06879559B1 Router line card protection using one-for-N redundancy 失效
标题翻译：路由器线卡保护采用一对一冗余
公开(公告)号：US06879559B1
公开(公告)日：2005-04-12
申请号：US09703043
申请日：2000-10-31
申请人： Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Thomas C. McDermott, III , Gregory S. Palmer , Keith W. Shaw , David Traylor
发明人： Harry C. Blackmon , Tony M. Brewer , Harold W. Dozier , Jim Kleiner , Thomas C. McDermott, III , Gregory S. Palmer , Keith W. Shaw , David Traylor
IPC分类号： H04L12/56 , H04L1/22
CPC分类号： H04L45/28 , H04L45/00 , H04L45/583 , H04L49/552
摘要： Router line cards are partitioned, separating packet forwarding from external or internal interfaces and enabling multiple line cards to access any set of external or internal data paths. Any failed working line card can be switchably replaced by another line card. In particular, a serial bus structure on the interface side interconnects any interface port within a protection group with a protect line card for that group. Incremental capacity allows the protect line card to perform packet forward functions. Logical mapping of line card addressing and identification provides locally managed protection switching of a line card that is transparent to other router line cards and to all peer routers. One-for-N protection ratios, where N is some integer greater than two, can be achieved economically, yet provide sufficient capacity with acceptable protection switch time under 100 milliseconds. Alternatively, protect line cards can routinely carry low priority traffic that is interruptible, allowing the protect line card to handle higher priority traffic previously carried by a failed working line card. This approach renders unnecessary engineering a network for less than full capacity to allow rerouting in the event of individual line card failure. Consequently, all data paths can be fully utilized. If a particular interface module on one data bus needs removal for maintenance, a duplicate data bus is available intact, allowing hot replacement of any working or protect interface module, even while a line card protection switch is in effect.
摘要翻译：路由器线路卡被分区，将数据包转发与外部或内部接口分离，并允许多个线路卡访问任何一组外部或内部数据路径。任何失败的工作线卡都可以用另一个线卡替代。特别地，接口侧的串行总线结构将保护组内的任何接口端口与该组的保护线路卡相互连接。增量容量允许保护线路卡执行数据包转发功能。线卡寻址和识别的逻辑映射提供对其他路由器线路卡和所有对等路由器透明的线路卡的本地管理保护倒换。一个N保护比，其中N是一个大于2的整数，可以经济实现，但提供足够的容量和可接受的保护开关时间在100毫秒以下。或者，保护线路卡可以常规地携带可中断的低优先级业务，从而允许保护线路卡处理先前由故障工作线路卡携带的较高优先级的业务。这种方法使不必要的工程网络满足不足的容量，以允许在单独的线路卡故障的情况下重新路由。因此，可以充分利用所有数据路径。如果一个数据总线上的特定接口模块需要拆卸维护，则重复的数据总线可以完整使用，即使在线卡保护开关有效时，也可以热插拔任何工作或保护接口模块。

4. 发明申请

US20050083921A1 Router switch fabric protection using forward error correction 有权
标题翻译：路由器交换矩阵保护采用前向纠错
公开(公告)号：US20050083921A1
公开(公告)日：2005-04-21
申请号：US10981841
申请日：2004-11-05
申请人： Thomas McDermott , Harry Blackmon , Tony Brewer , Harold Dozier , Jim Kleiner , Gregory Palmer , Keith Shaw , David Traylor , Dean Walker
发明人： Thomas McDermott , Harry Blackmon , Tony Brewer , Harold Dozier , Jim Kleiner , Gregory Palmer , Keith Shaw , David Traylor , Dean Walker
IPC分类号： H04L12/56 , H04Q11/00 , H04Q11/04 , H04L12/50
CPC分类号： H04Q11/0005 , H04J2203/0057 , H04L49/1523 , H04L49/208 , H04L49/254 , H04L49/357 , H04L2012/5627 , H04Q11/0066 , H04Q2011/0043
摘要： Instead of alternatively utilizing only one fabric or the other fabric of a redundant pair, both fabrics simultaneously transmit duplicate information, such that each packet forwarding module (PFM) receives the output of both fabrics simultaneously. In real time, an internal optics module (IOM) analyzes each information chunk coming out of a working zero switch fabric; simultaneously examines a parallel output of a working one duplicate switch fabric; and compares on a chunk-by-chunk basis the validity of each and every chunk from both switch fabrics. The IOM does this by examining forward error correction (FEC) check symbols encapsulated into each chunk. FEC check symbols allow correcting a predetermined number of bit errors within a chunk. If the chunk cannot be corrected, then the IOM provides indication to all PFMs downstream that the chunk is defective. Under such conditions, the PFMs select a chunk from the non-defective switch fabric. Under error-free normal conditions, however, the PFMs select a chunk arbitrarily from a default switch fabric. In this way, each chunk in real time is selected from a non-defective source and is thus guaranteed to be error free. Accordingly, if a switch fabric fails, no information chunks are lost anywhere in the system.
摘要翻译：代替替代地仅使用冗余对的一个结构或另一个结构，两个结构同时发送重复信息，使得每个分组转发模块（PFM）同时接收两个结构的输出。实时地，内部光学模块（IOM）分析从工作的零交换结构出来的每个信息块; 同时检查工作的一个重复交换矩阵的并行输出; 并且以逐块为基础比较来自两个交换结构的每个块的有效性。 IOM通过检查封装到每个块中的前向纠错（FEC）校验符号来实现。 FEC检查符号允许校正块内的预定数量的位错误。如果块不能被纠正，则IOM向下游的所有PFM提供指示该块是有缺陷的。在这种情况下，PFM从无缺陷的交换结构中选择一个块。然而，在无错误的正常条件下，PFM从默认的交换结构中任意选择一个块。以这种方式，从无缺陷源选择实时的每个块，并且因此被保证是无错误的。因此，如果交换机结构发生故障，系统中的任何地方都不会丢失任何信息块。

5. 发明申请

US20130003528A1 JOINT NEAR-END AND FAR-END STATE MACHINE FOR SERVICE PROTECTION NETWORKS 审中-公开
标题翻译：用于服务保护网络的接近端和末端状态机
公开(公告)号：US20130003528A1
公开(公告)日：2013-01-03
申请号：US13175580
申请日：2011-07-01
申请人： Guoliang Wu , Ladan S. Pickering , Chenjiang Hu , Si Long Ho , David Traylor , Rajnath Singh
发明人： Guoliang Wu , Ladan S. Pickering , Chenjiang Hu , Si Long Ho , David Traylor , Rajnath Singh
IPC分类号： H04L12/26
CPC分类号： H04L41/0816 , H04L43/0817 , H04L49/552
摘要： In one embodiment, a method for telecommunications includes determining the operational state of a first network switch, determining the operational state of a second network switch, determining the existence of an actionable condition, accessing information on the first switch, and changing the operational state of the first switch. The second network switch is coupled to the first network switch by a protected path. Determining the actionable condition and changing the operational state use references to the operational state of the first network switch, the operational state of the second network switch, and the actionable condition.
摘要翻译：在一个实施例中，一种用于电信的方法包括：确定第一网络交换机的操作状态，确定第二网络交换机的操作状态，确定可操作条件的存在，访问第一交换机上的信息，以及改变操作状态第一个开关。第二网络交换机通过受保护的路径耦合到第一网络交换机。确定可操作状态和改变操作状态使用对第一网络交换机的操作状态，第二网络交换机的操作状态和可操作条件的引用。

6. 发明授权

US09013977B2 Method and system for reducing traffic disturbance in a communication network caused by intermittent failure 有权
标题翻译：间歇性故障引起的通信网络流量扰动的方法和系统
公开(公告)号：US09013977B2
公开(公告)日：2015-04-21
申请号：US13156071
申请日：2011-06-08
申请人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho , Chenjiang Hu , Ladan S. Pickering
发明人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho , Chenjiang Hu , Ladan S. Pickering
IPC分类号： H04L12/26 , H04L1/00 , H04B10/032 , H04L12/933 , H04L12/707 , H04L12/703
CPC分类号： H04B10/032 , H04L45/22 , H04L45/28 , H04L49/101
摘要： A method may include: (i) in response to clearing of a fault on a working path of a protection switching group to which a first network element is interfaced: (a) transitioning, by the first network element, its state to a first state in which a protection path of the protection switching group is active; and (b) initiating, by the first network element, a wait to restore timer, the wait to restore timer having a duration such that upon expiration of the timer, the first network element is configured to switch the working path to active; and (ii) in response to receiving a message from a second network element interfaced to the protection switching group indicating that a failure has occurred on the working path: (a) maintaining, by the first network element, its state in the first state; and (b) continuing, by the first network element, the wait to restore timer.
摘要翻译：一种方法可以包括：（i）响应于清除第一网络元件所连接到的保护交换组的工作路径上的故障：（a）由第一网络元件将其状态转换到第一状态其中保护切换组的保护路径是活动的; 以及（b）由所述第一网元启动等待恢复定时器，所述等待恢复定时器具有这样的持续时间，使得在所述定时器到期时，所述第一网元被配置为将所述工作路径切换为活动; 以及（ii）响应于从所述保护交换组接收到指示在所述工作路径上发生故障的第二网元的消息：（a）由所述第一网络元件维持其处于所述第一状态的状态; 和（b）由第一网元继续等待恢复定时器。

7. 发明申请

US20120195190A1 METHOD AND SYSTEM FOR SOLVING COMMUNICATION FAILURE AND TRAFFIC LOSS IN SERVICE PROTECTION NETWORKS 审中-公开
标题翻译：用于解决服务保护网络中通信故障和交通损失的方法和系统
公开(公告)号：US20120195190A1
公开(公告)日：2012-08-02
申请号：US13360300
申请日：2012-01-27
申请人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho
发明人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho
IPC分类号： H04L12/24
CPC分类号： H04L45/22 , H04L45/28
摘要： A method for solving communication failure includes transmitting user traffic over an automatic protection switching (“APS”) connection between a near network node and a far network node, determining that a protect path on the APS connection has failed, sending a message to the far network node that the protect path has failed, and switching user traffic to the working path at the near network node.
摘要翻译：用于解决通信故障的方法包括通过近网络节点和远网络节点之间的自动保护切换（“APS”）连接发送用户业务，确定APS连接上的保护路径已经失败，向远端发送消息网络节点，保护路径失败，并将用户流量切换到近网络节点的工作路径。

8. 发明申请

US20120315030A1 METHOD AND SYSTEM FOR REDUCING TRAFFIC DISTURBANCE IN A COMMUNICATION NETWORK CAUSED BY INTERMITTENT FAILURE 有权
标题翻译：通过间接故障引起的通信网络中减少交通干扰的方法和系统
公开(公告)号：US20120315030A1
公开(公告)日：2012-12-13
申请号：US13156071
申请日：2011-06-08
申请人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho , Chenjiang Hu , Ladan S. Pickering
发明人： Rajnath Singh , Guoliang Wu , David Traylor , Si Long Ho , Chenjiang Hu , Ladan S. Pickering
IPC分类号： H04B10/08
CPC分类号： H04B10/032 , H04L45/22 , H04L45/28 , H04L49/101
摘要： A method may include: (i) in response to clearing of a fault on a working path of a protection switching group to which a first network element is interfaced: (a) transitioning, by the first network element, its state to a first state in which a protection path of the protection switching group is active; and (b) initiating, by the first network element, a wait to restore timer, the wait to restore timer having a duration such that upon expiration of the timer, the first network element is configured to switch the working path to active; and (ii) in response to receiving a message from a second network element interfaced to the protection switching group indicating that a failure has occurred on the working path: (a) maintaining, by the first network element, its state in the first state; and (b) continuing, by the first network element, the wait to restore timer.
摘要翻译：一种方法可以包括：（i）响应于清除第一网络元件所连接到的保护交换组的工作路径上的故障：（a）由第一网络元件将其状态转换到第一状态其中保护切换组的保护路径是活动的; 以及（b）由所述第一网元启动等待恢复定时器，所述等待恢复定时器具有这样的持续时间，使得在所述定时器到期时，所述第一网元被配置为将所述工作路径切换为活动; 以及（ii）响应于从所述保护交换组接收到指示在所述工作路径上发生故障的第二网元的消息：（a）由所述第一网络元件维持其处于所述第一状态的状态; 和（b）由第一网元继续等待恢复定时器。

9. 发明申请

US20120195186A1 METHOD AND SYSTEM FOR PREVENTING TRAFFIC LOSS CAUSED BY WAIT-TO-RESTORE MECHANISMS IN SERVICE PROTECTION NETWORKS 审中-公开
标题翻译：在服务保护网络中防止等待恢复机制造成的交通损失的方法和系统
公开(公告)号：US20120195186A1
公开(公告)日：2012-08-02
申请号：US13360265
申请日：2012-01-27
申请人： Rajnath Singh , Guoliang Wu , David Traylor
发明人： Rajnath Singh , Guoliang Wu , David Traylor
IPC分类号： H04L12/26
CPC分类号： H04L45/22 , H04L45/28
摘要： A method for preventing traffic loss includes transmitting user traffic over an automatic protection switching (“APS”) connection with revertive operation between a first switch and a second switch, determining that the working path on the APS connection has failed, moving user traffic to the protect path of the APS connection, and initiating a wait-to-restore mode including a wait-to-restore time period associated with the first switch. The method also includes, upon termination of the wait-to-restore time period of the first switch, maintaining traffic on the protect path until a message designating the working path is received on the protect path. The method further includes, upon receiving a message designating the working path, switching user traffic to the working path. The APS connection includes the protect path and the working path.
摘要翻译：一种用于防止流量损失的方法包括通过在第一交换机和第二交换机之间的回复操作的自动保护切换（“APS”）连接来发送用户业务，确定APS连接上的工作路径已经失败，将用户业务移动到保护APS连接的路径，以及发起包括与第一交换机相关联的等待恢复时间段的等待恢复模式。该方法还包括在第一交换机的等待恢复时间段结束时，保持保护路径上的业务，直到在保护路径上接收到指定工作路径的消息。该方法还包括：在接收到指定工作路径的消息时，将用户业务切换到工作路径。 APS连接包括保护路径和工作路径。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式