Recovery of traffic in a connection-oriented network
    1.
    发明授权
    Recovery of traffic in a connection-oriented network 有权
    在面向连接的网络中恢复流量

    公开(公告)号:US09203732B2

    公开(公告)日:2015-12-01

    申请号:US13496597

    申请日:2009-10-01

    摘要: A connection-oriented network (5) has a plurality of connections terminated at a first node (N6). A recovery group (A) is configured at the first node (N6) comprising at least two of the plurality of connections (LSP1-6, LSP2-6, LSP3-6, LSP4-6). Fault detection is performed over each of the connections in the recovery group (A) and the node determines if at least one recovery group fault condition is met, based on the results of the fault detections performed over the connections in the recovery-group (A). When the at least one recovery group fault condition is met, the node causes traffic on the plurality of connections in the recovery group (A) to be transferred to backup paths. When the at least one recovery group fault condition is not met, and a fault has been detected on a connection in the recovery group (A), the node causes traffic to be transferred from that connection to a backup path.

    摘要翻译: 面向连接的网络(5)具有终止于第一节点(N6)的多个连接。 在包括多个连接(LSP1-6,LSP2-6,LSP3-6,LSP4-6)中的至少两个的第一节点(N6)处配置恢复组(A)。 基于在恢复组(A)中的连接执行的故障检测的结果,在恢复组(A)中的每个连接上执行故障检测,并且节点确定是否满足至少一个恢复组故障条件 )。 当满足至少一个恢复组故障条件时,该节点导致恢复组(A)中的多个连接上的流量被传送到备份路径。 当不满足至少一个恢复组故障条件,并且在恢复组(A)中的连接上检测到故障时,节点将使流量从该连接传输到备份路径。

    Method and Apparatus for Optimizing Packet Timing Transport
    2.
    发明申请
    Method and Apparatus for Optimizing Packet Timing Transport 有权
    用于优化分组定时传输的方法和装置

    公开(公告)号:US20130010813A1

    公开(公告)日:2013-01-10

    申请号:US13503681

    申请日:2009-10-29

    IPC分类号: H04J3/06

    摘要: There is provided a method of optimizing timing packet transport in a network node, the method comprising using a locally available stable frequency reference at the network node to provide a pre-determined network node transit time for timing packets in at least one direction into or out of the network node. There is also provided a network node comprising a locally available stable frequency reference and circuitry adapted to apply a pre-determined network node transit time, L, to all timing packets transiting the network node in at least one direction into or out of a network node dependent on the locally available stable frequency reference.

    摘要翻译: 提供了一种优化网络节点中的定时分组传输的方法,所述方法包括在网络节点处使用本地可用的稳定频率参考来提供预定的网络节点传播时间,用于将至少一个方向上的定时分组输入或输出 的网络节点。 还提供了一种网络节点,其包括本地可用的稳定频率参考和适于将至少一个方向上的网络节点的网络节点传输时间L应用于网络节点的所有定时分组的网络节点 取决于本地可用的稳定频率参考。

    Method of Providing Data
    3.
    发明申请
    Method of Providing Data 审中-公开
    提供数据的方法

    公开(公告)号:US20080159311A1

    公开(公告)日:2008-07-03

    申请号:US11829498

    申请日:2007-07-27

    IPC分类号: H04L12/56

    CPC分类号: H04L45/00 H04L45/58

    摘要: A method of providing data from a first network 100 to a second network wherein a first PEJ and a second PEK node are provided in the first network 100 and are each capable of supplying data to the second network, wherein: i. at any one time one of the first PEJ and second PEK nodes provides data to the second network; and ii. the first PEJ and second PEK nodes are arranged to communicate with one another such that the other of the nodes can provide data to the second network if a fault is detected, wherein the communications between the first and second node allow a fault to be detected.

    摘要翻译: 一种从第一网络100向第二网络提供数据的方法,其中在第一网络100中提供第一PEJ和第二PEK节点,并且每个能够向第二网络提供数据,其中: 在任何时刻,第一PEJ和第二PEK节点中的一个向第二网络提供数据; 和ii。 第一PEJ和第二PEK节点被布置成彼此通信,使得如果检测到故障,则另一个节点可以向第二网络提供数据,其中第一和第二节点之间的通信允许检测到故障。

    Resiliency Schemes in Communications Networks
    5.
    发明申请
    Resiliency Schemes in Communications Networks 有权
    通信网络中的弹性方案

    公开(公告)号:US20100002578A1

    公开(公告)日:2010-01-07

    申请号:US12443708

    申请日:2006-10-09

    IPC分类号: G06F11/00

    摘要: A connection oriented communications network 10 comprises a plurality of nodes including a plurality of edge nodes 12, 14, 16, 18. The network is arranged to define a primary tunnel connecting a primary one 12, 14 of the edge nodes to another edge node 14, 12 and a secondary tunnel connecting a secondary one 16, 18 of the edge nodes to another edge node 12, 14, 16, 18. The network is arranged to enable switching of traffic from the primary tunnel to the secondary tunnel in the event of detection of a failure in the primary tunnel.

    摘要翻译: 面向连接的通信网络10包括包括多个边缘节点12,14,16,18的多个节点。网络被配置为定义连接边缘节点的主节点12,14与另一边缘节点14的主隧道 ,12和将第二个16,18的边缘节点连接到另一个边缘节点12,16,18,18的辅助隧道。网络被配置为在事件中能够从主隧道到次要隧道的业务交换 检测主隧道故障。

    Protection Scheme
    6.
    发明申请
    Protection Scheme 审中-公开
    保护计划

    公开(公告)号:US20090010154A1

    公开(公告)日:2009-01-08

    申请号:US11965828

    申请日:2007-12-28

    IPC分类号: H04L12/24

    摘要: A protection scheme for a metro optical network involves programming ingress nodes and egress nodes with a primary multicast label switched path (LSP) and a back-up LSP to provide one-to-one protection. The primary and back-up LSPs are configured prior to the occurrence of a network fault to allow the network to transmit multicast communication when the fault occurs. Particularly, multicast communications are sent on the primary LSP during normal operation. However, when a network fault occurs, the nodes also send a duplicate multicast communication over the back-up LSP. Configuring the primary and back-up LSPs prior to the fault occurring avoids the need for signalling to establish a working LSP after a fault occurs.

    摘要翻译: 用于城域光网络的保护方案涉及使用主要组播标签交换路径(LSP)和备用LSP对入口节点和出口节点进行编程,以提供一对一保护。 在发生网络故障之前配置主备份LSP和备份LSP,以允许网络在故障发生时传输组播通信。 特别地,在正常操作期间,在主LSP上发送组播通信。 但是,当发生网络故障时,节点也通过备份LSP发送重复的组播通信。 在发生故障之前配置主备份和备份LSP避免了在发生故障后建立LSP的信令。

    Method and device for creating and for receiving a data packet with discard eligible information
    7.
    发明授权
    Method and device for creating and for receiving a data packet with discard eligible information 有权
    用于创建和接收具有丢弃资格信息的数据包的方法和设备

    公开(公告)号:US09559974B2

    公开(公告)日:2017-01-31

    申请号:US13979350

    申请日:2011-04-18

    CPC分类号: H04L47/31 H04L45/50 H04L47/12

    摘要: Aspects of the present disclosure relate to a method and a device for creating a data packet with discard eligible information and to a method and device for receiving a data packet with discard eligible information. Specifically, one aspect of the present disclosure provides a method for creating a data packet, containing a data payload and at least one label determining onward routing for the data packet, for onward transmission in a data communication system, a machine readable medium for implementing the method, and a corresponding device. In a first step a discard eligibility associated with the data packet is determined. In a second step, discard eligible information is encoded in a label determining onward routing for the data packet. In a third step an outgoing data packet including the label is generated.

    摘要翻译: 本公开的方面涉及用于创建具有丢弃合格信息的数据分组的方法和设备以及用于接收具有丢弃合格信息的数据分组的方法和设备。 具体地,本公开的一个方面提供了一种用于创建包含数据有效载荷的数据分组的方法以及确定数据分组的向前路由的至少一个标签,用于数据通信系统中的向前传输,用于实现数据分组的机器可读介质 方法和相应的设备。 在第一步骤中,确定与数据分组相关联的丢弃资格。 在第二步中,丢弃符合条件的信息被编码在确定数据分组的向前路由的标签中。 在第三步骤中,生成包括标签的输出数据分组。

    METHOD AND DEVICE FOR CREATING AND FOR RECEIVING A DATA PACKET WITH DISCARD ELIGIBLE INFORMATION
    8.
    发明申请
    METHOD AND DEVICE FOR CREATING AND FOR RECEIVING A DATA PACKET WITH DISCARD ELIGIBLE INFORMATION 有权
    用于创建和接收具有违规资格信息的数据包的方法和装置

    公开(公告)号:US20140043976A1

    公开(公告)日:2014-02-13

    申请号:US13979350

    申请日:2011-04-18

    IPC分类号: H04L12/833

    CPC分类号: H04L47/31 H04L45/50 H04L47/12

    摘要: Aspects of the present disclosure relates to a method and a device for creating a data packet with discard eligible information and to a method and device for receiving a data packet with discard eligible information. Specifically, one aspect of the present disclosure provides a method for creating a data packet, containing a data payload and at least one label determining onward routing for the data packet, for onward transmission in a data communication system, a machine readable medium for implementing the method, and a corresponding device. In a first step a discard eligibility associated with the data packet is determined. In a second step, discard eligible information is encoded in a label determining onward routing for the data packet. In a third step an outgoing data packet including the label is generated.

    摘要翻译: 本公开的方面涉及用于创建具有丢弃合格信息的数据分组的方法和设备以及用于接收具有丢弃合格信息的数据分组的方法和设备。 具体地,本公开的一个方面提供了一种用于创建包含数据有效载荷的数据分组的方法以及确定数据分组的向前路由的至少一个标签,用于数据通信系统中的向前传输,用于实现数据分组的机器可读介质 方法和相应的设备。 在第一步骤中,确定与数据分组相关联的丢弃资格。 在第二步中,丢弃符合条件的信息被编码在确定数据分组的向前路由的标签中。 在第三步骤中,生成包括标签的输出数据分组。

    CONFIGURATION OF SYNCHRONISATION NETWORK HAVING SYNCHRONIZATION TRAILS FOR TIME SYNC AND FREQUENCY SYNC
    9.
    发明申请
    CONFIGURATION OF SYNCHRONISATION NETWORK HAVING SYNCHRONIZATION TRAILS FOR TIME SYNC AND FREQUENCY SYNC 有权
    具有同步和同步同步的同步网络的配置

    公开(公告)号:US20130039220A1

    公开(公告)日:2013-02-14

    申请号:US13516363

    申请日:2010-01-18

    IPC分类号: H04L12/28

    CPC分类号: H04J3/0679 H04J3/0641

    摘要: Configuring a node (410) of a synchronization network involves identifying (10) possible alternative time synchronization trails arranged to carry time synchronization information for time synchronization at the node, and possible alternative frequency trails, arranged to carry frequency synchronization information for frequency synchronization at the node. Using information about the sources (20), a comparison of the trails (30) is biased to increase a likelihood of choosing time synchronization and frequency trails which share the same source, over a likelihood of choosing trails with different sources. This can help avoid divergence and consequent bit errors arising from phase errors, resulting from trails having different sources. It can encompass for example changing both to a new common source, or changing one or both trails while still using the old common source.

    摘要翻译: 配置同步网络的节点(410)涉及识别(10)布置为携带用于节点处的时间同步的时间同步信息的可能的备选时间同步轨迹,以及可能的替代频道,其被布置为携带用于频率同步的频率同步信息 节点。 使用关于源(20)的信息,对于选择具有不同来源的路径的可能性,路径(30)的比较被偏置以增加选择共享相同源的时间同步和频道的可能性。 这可以帮助避免由于具有不同来源的路径导致的相位误差产生的分歧和相应的位错误。 它可以包括例如将两者都改为新的公共源,或者改变一个或两个路径,同时仍然使用旧的公共源。

    Optimized synchronization of MAC address tables in network interconnection apparatuses
    10.
    发明授权
    Optimized synchronization of MAC address tables in network interconnection apparatuses 有权
    网络互连设备中MAC地址表的优化同步

    公开(公告)号:US07929545B2

    公开(公告)日:2011-04-19

    申请号:US12066980

    申请日:2006-08-24

    IPC分类号: H04L12/28 H04L12/66

    摘要: Network interconnection apparatus comprising a platform with interface ports for network interconnection and comprising in turn a first series and a second series of interface port cards and an interconnection unit for commanded interconnection at least between the cards of the first and second series and between cards of the first series. The cards of the first series have their own associated MAC address tables for addressing traffic between ports through the interconnection unit. Each entry of the table has an age field defining in time the age of the entry. The content of the age field is periodically verified and if it reaches a preset maximum figure the entry is updated on the basis of the content of the age field by a corresponding entry in the table of another card of the first series and associated therewith by the information in the entry to be updated. If the content of the age field of the corresponding entry is also a maximum figure, both the entries can be deleted.

    摘要翻译: 网络互连设备包括具有用于网络互连的接口端口的平台,并且还包括第一系列和第二系列接口端口卡和用于至少在第一和第二串联的卡之间以及在第一和第二系列之间的指令互连的互连单元 第一系列 第一系列的卡具有它们自己的相关MAC地址表,用于通过互连单元寻址端口之间的通信。 表的每个条目都有一个时间字段,用于定义入口年龄的时间。 定期验证年龄字段的内容,如果达到预设的最大数字,则根据年龄段的内容,通过第一系列的另一个卡的表中的相应条目更新条目,并通过 要更新的条目中的信息。 如果相应条目的age字段的内容也是最大值,则可以删除这两个条目。