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公开(公告)号：US07450497B2
公开(公告)日：2008-11-11
申请号：US10195448
申请日：2002-07-16
CPC分类号： H04J3/085 , H04J2203/0053 , H04J2203/006
摘要： In a mesh network, a network element for providing protection switching in a 1:N shared mesh protection scheme having a first protection path associated with a pair of working paths selected from the N working paths is disclosed. The network element comprising: (a) a link for connecting the network element to a first working path of the pair of working paths in a path layer of the network, the path layer including a plurality of interconnected network elements; (b) a routing table accessible by the network element, the routing table for having local protection channel information associated with a local protection segment separate from the first protection path, the local protection segment connecting the network element and one of the interconnected network elements adjacent to the network element; and (c) an identification module for using the local protection channel information to identify an available protection channel on the local protection segment in the event of failure of a local working segment of the first working path, the local working segment connecting the network element and said one of the adjacent interconnected network elements; wherein the available local protection channel on the local protection segment is used to switch local network bandwidth from the failed local working segment to the local protection segment after the failure has been detected. Selection functions are also disclosed.
摘要翻译： 在网状网络中，公开了一种用于在具有与从N个工作路径中选择的一对工作路径相关联的第一保护路径的1：N共享网格保护方案中提供保护倒换的网元。 所述网元包括：（a）用于将所述网络元件连接到所述网络的路径层中的所述一对工作路径的第一工作路径的链路，所述路径层包括多个互连的网络元件; （b）可由网元访问的路由表，所述路由表用于具有与与第一保护路径分离的本地保护段相关联的本地保护信道信息，连接网元的本地保护段和相邻的互连网元之一 到网元; 以及（c）识别模块，用于在第一工作路径的本地工作段发生故障的情况下使用本地保护信道信息来识别本地保护段上的可用保护信道，连接网元的本地工作段和 所述相邻互连网络元件之一; 其中本地保护段上的可用本地保护信道用于在检测到故障后将本地网络带宽从故障本地工作段切换到本地保护段。 还公开了选择功能。
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公开(公告)号：US06917759B2
公开(公告)日：2005-07-12
申请号：US10059344
申请日：2002-01-31
CPC分类号： H04J3/085 , H04J2203/0053 , H04J2203/006
摘要： A shared mesh protection scheme defines an associated protection path when a working connection is established. During the protection path definition, the corresponding protection path information is sent down to a switch card of network elements making up the protection path. Upon detection of the failure, the network elements using an overhead byte message will inform the routing source network element of the connection of the failure in the working path. The overhead bytes used are interrupt driven bytes located in the line and path overhead of network traffic. The routing source node of the connection will then send the corresponding overhead byte messages down the protection path to provide for protection path establishment according to the preloaded data located at the switch card. It should be noted that each connection can have a source and termination element which relates to the source from where the corresponding connection was set-up rather than the direction of the payload transmission. Therefore, once the failure has occurred the source elements will send messages using overhead bytes to the corresponding network elements along the protection path. Accordingly, routing tables located at the switch card of the network elements, set-up when the working path connections were initially established, determine this dynamically allocated protection path environment.
摘要翻译： 共享网格保护方案在建立工作连接时定义相关的保护路径。 在保护路径定义期间，相应的保护路径信息被发送到构成保护路径的网络元件的交换卡。 在检测到故障时，使用开销字节消息的网络元件将通知路由源网络元件在工作路径中的故障连接。 所使用的开销字节是位于网络流量的线路和路径开销中的中断驱动字节。 然后，连接的路由源节点将在保护路径下发送对应的开销字节消息，以根据位于交换机卡处的预加载数据提供保护路径建立。 应当注意，每个连接可以具有源和终端元件，该源和终端元件与其中相应连接被建立的源相关，而不是有效载荷传输的方向。 因此，一旦发生故障，源元素将使用开销字节将消息发送到沿着保护路径的相应网络元件。 因此，当工作路径连接初始建立时，位于网元的交换卡的路由表，建立起动态分配的保护路径环境。
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3.发明授权公开(公告)号：US07436763B1
公开(公告)日：2008-10-14
申请号：US10207810
申请日：2002-07-31
CPC分类号： H04J3/14 , H04Q2011/0081
摘要： A data communication apparatus having a plurality of working ports for exchanging data traffic with a network element and at least one protection port. The communication apparatus also has a protection switching functional element to switch data traffic from a failed working port to the at least one protection port. The protection switching functional element is capable to acquire either one of a first mode of operation and a second mode of operation. The first mode of operation is an 1:Q mode using a single protection port where Q is the number of working ports and Q is equal or greater than 1. The second mode of operation is an M:N mode where M is the number of protection ports and N is the number of working ports, where M and N are greater than 1.
摘要翻译： 一种数据通信装置，具有多个用于与网络元件和至少一个保护端口交换数据业务的工作端口。 通信装置还具有保护切换功能元件，用于将数据业务从故障工作端口切换到至少一个保护端口。 保护切换功能元件能够获取第一操作模式和第二操作模式中的任一种。 第一种操作模式是使用单个保护端口的1：Q模式，其中Q是工作端口数量，Q等于或大于1.第二种操作模式是M：N模式，其中M是 保护端口，N为工作端口数，M和N大于1。
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4.发明授权Apparatus and method for establishment and protection of connections within mesh networks 有权用于建立和保护网状网络内连接的装置和方法公开(公告)号：US07372803B2
公开(公告)日：2008-05-13
申请号：US10107044
申请日：2002-03-28
申请人： Evert de Boer , James A. Shields , Richard Trudel , Malcolm Betts
发明人： Evert de Boer , James A. Shields , Richard Trudel , Malcolm Betts
IPC分类号： G01R31/08
CPC分类号： H04L45/28 , H04L12/437 , H04L12/4637 , H04L45/00 , H04L45/22 , H04L45/586 , H04L45/60
摘要： A node within a mesh network includes an Optical Connection Controller (OCC) and a network element. When a connection path within the mesh network is required, an OCC determines if a particular connection path requires a network element to operate as a virtual gateway to separate the mesh network into separate protection domains for that particular connection path. A connection path might require separate protection domains in cases in which the number of network elements and/or repeater/amplifier components for a particular connection path is greater than a threshold, the total length of links for the connection path is above a threshold and/or another factor that could cause the recovery time for the connection path to increase beyond an acceptable threshold level. If the OCC determines that one or more virtual gateways are required for a particular connection path, the OCC selects an appropriate network element within the network to operate as a virtual gateway for that particular connection path. Finally, the OCC assigns network elements and links to establish working and protection paths between the source network element and the virtual gateway and between the virtual gateway and the destination network element. This set-up can ensure that each connection path will have a recovery time after a failure within an acceptable range.
摘要翻译： 网状网络内的节点包括光连接控制器（OCC）和网元。 当需要网状网络中的连接路径时，OCC确定特定连接路径是否要求网络元件作为虚拟网关进行操作，以将网状网络分离为用于该特定连接路径的单独的保护域。 在特定连接路径的网络元件和/或中继器/放大器组件的数量大于阈值的情况下，连接路径可能需要单独的保护域，连接路径的链路的总长度高于阈值和/ 或者可能导致连接路径的恢复时间增加超过可接受的阈值水平的另一个因素。 如果OCC确定特定连接路径需要一个或多个虚拟网关，则OCC选择网络内的适当网络元件作为该特定连接路径的虚拟网关进行操作。 最后，OCC分配网元和链路，建立源网元和虚拟网关之间以及虚拟网关与目的网元之间的工作和保护路径。 此设置可以确保每个连接路径在故障之后的恢复时间在可接受的范围内。
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公开(公告)号：US08116196B2
公开(公告)日：2012-02-14
申请号：US12244373
申请日：2008-10-02
IPC分类号： H04L12/28 , H04L12/26 , H04L12/56 , G06F15/173
CPC分类号： H04J3/085 , H04J2203/0053 , H04J2203/006
摘要： In a mesh network, a network element for providing protection switching in a 1:N shared mesh protection scheme having a first protection path associated with a pair of working paths selected from the N working paths is disclosed. The network element comprising: (a) a link for connecting the network element to a first working path of the pair of working paths in a path layer of the network, the path layer including a plurality of interconnected network elements; (b) a routing table accessible by the network element, the routing table for having local protection channel information associated with a local protection segment separate from the first protection path, the local protection segment connecting the network element and one of the interconnected network elements adjacent to the network element; and (c) an identification module for using the local protection channel information to identify an available protection channel on the local protection segment in the event of failure of a local working segment of the first working path, the local working segment connecting the network element and said one of the adjacent interconnected network elements; wherein the available local protection channel on the local protection segment is used to switch local network bandwidth from the failed local working segment to the local protection segment after the failure has been detected. Selection functions are also disclosed.
摘要翻译： 在网状网络中，公开了一种用于在具有与从N个工作路径中选择的一对工作路径相关联的第一保护路径的1：N共享网格保护方案中提供保护倒换的网元。 所述网元包括：（a）用于将所述网络元件连接到所述网络的路径层中的所述一对工作路径的第一工作路径的链路，所述路径层包括多个互连的网络元件; （b）可由网元访问的路由表，所述路由表用于具有与与第一保护路径分离的本地保护段相关联的本地保护信道信息，连接网元的本地保护段和相邻的互连网元之一 到网元; 以及（c）识别模块，用于在第一工作路径的本地工作段发生故障的情况下使用本地保护信道信息来识别本地保护段上的可用保护信道，连接网元的本地工作段和 所述相邻互连网络元件之一; 其中本地保护段上的可用本地保护信道用于在检测到故障后将本地网络带宽从故障本地工作段切换到本地保护段。 还公开了选择功能。
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公开(公告)号：US07287081B1
公开(公告)日：2007-10-23
申请号：US10738896
申请日：2003-12-17
IPC分类号： G06F15/16
CPC分类号： H04L43/0811 , H04L41/0663 , H04L41/22
摘要： Commands are shown and described that enable a user to manipulate a call connection for the purpose of maintaining links in a network. The Block command prevents new traffic from being added to an output port of a device in a connection. The Forced Restoration/Release of Forced Restoration command set may be used to service the working channel. The Lockout of Restoration/Release of Lockout commands provide an alternative method of servicing a working connection and preventing unnecessary generation of redundant connections in the network.
摘要翻译： 显示和描述使用户能够操纵呼叫连接以维护网络中的链接的命令。 Block命令可防止将新流量添加到连接中设备的输出端口。 强制恢复/释放强制恢复命令集可用于维护工作通道。 锁定锁定/释放锁定命令提供了一种服务于工作连接并防止网络中不必要的冗余连接生成的替代方法。
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