Method And System For Controlled Tree Management
    11.
    发明申请
    Method And System For Controlled Tree Management 有权
    控制树管理方法与系统

    公开(公告)号:US20110080854A1

    公开(公告)日:2011-04-07

    申请号:US12525062

    申请日:2008-01-18

    IPC分类号: H04L12/28

    摘要: There is disclosed a method and apparatus for facilitating a network, such as an Ethernet LAN, for efficient forwarding of data traffic by collecting neighbor information, generating and distributing link state advertisements, populating a topology database for the network, and calculating trees for each bridge serving as a root bridge. In a preferred embodiment the method and system also prepare one or more backup topologies, and store them for use if they are needed due to a failure condition detected in the network. In a particularly preferred embodiment, probabilities are assigned to various potential failure conditions, and the probability values are used to decide which backup topologies to calculate, store, or use.

    摘要翻译: 公开了一种方法和装置,用于通过收集邻居信息,生成和分发链路状态通告,填充网络的拓扑数据库以及计算每个网桥的树,从而方便诸如以太网LAN的网络来有效地转发数据流量 作为根桥。 在优选实施例中,方法和系统还准备一个或多个备用拓扑,并且如果由于在网络中检测到故障状况而需要,则存储它们以供使用。 在特别优选的实施例中,将概率分配给各种潜在的故障条件,并且概率值用于决定要计算,存储或使用哪些备份拓扑。

    METHOD AD APPARATUS FOR ETHERNET PROTECTION WITH LOCAL RE-ROUTING
    12.
    发明申请
    METHOD AD APPARATUS FOR ETHERNET PROTECTION WITH LOCAL RE-ROUTING 有权
    用于以太网保护与本地重新路由的方法AD装置

    公开(公告)号:US20110013640A1

    公开(公告)日:2011-01-20

    申请号:US12933200

    申请日:2009-03-16

    IPC分类号: H04L12/28

    摘要: A method is provided for use at a first node of a network. The first node (B) has an input path for receiving Ethernet frames destined for a second node of the network. The first node (B) also has a first output (working) path for forwarding the received Ethernet frames towards the second node. A failure along the first output (working) path is detected at the first node. Following such failure detection, the received Ethernet frames are caused, at the first node, to be re-routed along a second output (backup) path, different to the first output (working) path, towards the second node. The re-routing is performed by using (e.g. referring to and/or changing) respective indications (VLAN1) applied to the Ethernet frames to distinguish those Ethernet frames to be forwarded along the first output (working) path from those Ethernet frames to be forwarded along the second output (backup) path.

    摘要翻译: 提供了一种在网络的第一节点使用的方法。 第一节点(B)具有用于接收去往网络的第二节点的以太网帧的输入路径。 第一节点(B)还具有用于将接收到的以太网帧转发到第二节点的第一输出(工作)路径。 在第一个节点处检测到沿着第一个输出(工作)路径的故障。 在这种故障检测之后,在第一节点处引起接收的以太网帧沿着与第一输出(工作)路径不同的第二输出(备用)路径被重新路由到第二节点。 通过使用(例如参考和/或改变)应用于以太网帧的各个指示(VLAN1)来执行重新路由以区分将沿着要转发的那些以太网帧沿着第一输出(工作)路径转发的以太网帧 沿着第二个输出(备份)路径。

    Method and Arrangement for Failure Handling in a Network
    13.
    发明申请
    Method and Arrangement for Failure Handling in a Network 有权
    网络中故障处理的方法和布置

    公开(公告)号:US20080291822A1

    公开(公告)日:2008-11-27

    申请号:US11916565

    申请日:2005-06-14

    IPC分类号: H04L12/24

    摘要: The invention relates to failure handling in a tree sructure network (NW1) that has edge nodes (EN1 . . . EN4) and switching nodes (SW1 . . . SW4) interconnected by lines (L1). VLANs (VLAN1-VLAN3) are established such that at least one thereof provides connectivity in case of any single failure in the network. The VLANs can be established by using spanning trees (ST1,ST2,ST3). Among the edge nodes, emitters (EN3) broadcast alive messages (A1,A2,A3) regularly on the VLANs and notifiers (EN2) note the alive messages. A missing alive message indicates a failure (CD1) on one VLAN (VLAN2) and the notifier (EN2) broadcasts corresponding failure messages (F1,F2,F3) on the VLANs. When all the alive messages (A1,A2,A3) appear again the notifier (EN2) broadcasts corresponding repair messages (R1,R2,R3). If the notifiers don't note a failure the nodes (EN1,EN4) with no special role performs a similar function as the notifier (EN2) somewhat slower. The failure handling is fast, robust, uses few messages, increases only slightly the traffic load in the network (NW1) and is compliant with present standards.

    摘要翻译: 本发明涉及具有通过线路(L1)互连的边缘节点(EN1 ... EN4)和交换节点(SW1 ... SW4)的树结构网络(NW1)中的故障处理。 建立VLAN(VLAN1-VLAN3),使得其中的至少一个在网络中的任何单个故障的情况下提供连接性。 VLAN可以通过生成树(ST1,ST2,ST3)建立。 在边缘节点中,发射器(EN3)定期在VLAN和通知器(EN2)上广播有效消息(A1,A2,A3),注意活动消息。 丢失的活着消息表示一个VLAN(VLAN2)发生故障(CD1),通知器(EN2)广播VLAN上相应的故障消息(F1,F2,F3)。 当所有活动消息(A1,A2,A3)再次出现时,通知器(EN2)广播相应的修复消息(R1,R2,R3)。 如果通知程序不记录故障,则没有特殊角色的节点(EN1,EN4)执行与通知程序(EN2)类似的功能稍慢。 故障处理快速,稳健,使用少量消息,仅增加网络流量负载(NW1),符合现行标准。

    Cluster-based network provisioning
    14.
    发明申请
    Cluster-based network provisioning 有权
    基于群集的网络配置

    公开(公告)号:US20050169179A1

    公开(公告)日:2005-08-04

    申请号:US10939970

    申请日:2004-09-14

    IPC分类号: H04L12/24 H04L12/26 H04L12/28

    摘要: In the area of network provisioning, there is a problem of selecting a suitable traffic-provisioning model for large networks due to the high management complexity of the resource-efficient trunk model and the poor bandwidth efficiency of the easy-to-configure hose model. The invention is based on the idea of partitioning at least part of the network into multi-node clusters, and defining traffic limitations on at least two levels, including the intra-cluster level and the inter-cluster level, where the traffic limitations include one or more node-to-cluster traffic limitations for inter-cluster traffic. Subsequently, cluster-based provisioning of the network is performed based on the traffic limitations. The novel node-to-cluster limitations proposed by the invention are preferably applied in a cluster-based trunk or hose model on the inter-cluster level. In other words, for the description of the inter-cluster traffic (traffic between the clusters) cluster-based trunk or hose models can be used, preferably depending on the available information about the traffic. The cluster-based provisioning makes it possible to find a trade-off between management complexity and overprovisioning.

    摘要翻译: 在网络配置领域,由于资源高效的主干模型的高管理复杂性和易于配置的软管模型的较差带宽效率,存在为大型网络选择合适的流量供应模型的问题。 本发明基于将网络的至少一部分划分成多节点集群并且在包括集群内级别和集群间级别的至少两个级别上定义业务限制的想法,其中流量限制包括一个 或更多的群集间流量的节点到群集流量限制。 随后,基于流量限制来执行基于群集的网络供应。 本发明提出的新颖的节点到群集限制优选地应用于群集间级别上的基于群集的中继线或软管模型。 换句话说,对于集群间流量(集群之间的流量)的描述,可以使用基于集群的中继或软件模型,优选地取决于关于流量的可用信息。 基于集群的配置使得可以在管理复杂性和过度配置之间找到权衡。

    Method and arrangement for failure handling in a network
    15.
    发明授权
    Method and arrangement for failure handling in a network 有权
    网络中故障处理的方法和布置

    公开(公告)号:US07965621B2

    公开(公告)日:2011-06-21

    申请号:US11916565

    申请日:2005-06-14

    IPC分类号: G01R31/08

    摘要: A method and arrangement for failure handling in a tree-structured communications network having interconnected edge nodes and switching nodes. VLANs may be established by using spanning trees to provide connectivity in case of a failure in the network. Emitters in the edge nodes periodically broadcast alive messages on the VLANs, and notifiers note the alive messages. A missing alive message indicates a failure on one of the VLANs, and the notifier broadcasts corresponding failure messages on the VLANs. When the alive messages are restored, the notifier broadcasts corresponding repair messages. If a notifier fails to note a failure, one of the edge nodes performs a similar function although somewhat slower.

    摘要翻译: 一种具有互连边缘节点和交换节点的树状结构化通信网络中的故障处理方法和装置。 可以通过使用生成树在网络中发生故障的情况下提供连接来建立VLAN。 边缘节点中的发射器周期性地在VLAN上广播活动消息,通知器记下活着的消息。 缺少的活着消息表示其中一个VLAN发生故障,通知程序在VLAN上广播相应的故障消息。 当活动消息恢复时,通知器广播相应的修复消息。 如果通知程序无法注意到故障,则其中一个边缘节点执行类似的功能,尽管稍微慢些。

    Method and arrangement for failure handling in a network
    16.
    发明授权
    Method and arrangement for failure handling in a network 有权
    网络中故障处理的方法和布置

    公开(公告)号:US08576689B2

    公开(公告)日:2013-11-05

    申请号:US13100057

    申请日:2011-05-03

    IPC分类号: H04L5/20

    摘要: A method and arrangement for failure handling in a tree-structured communications network having interconnected edge nodes and switching nodes. VLANs may be established by using spanning trees to provide connectivity in case of a failure in the network. Emitters in the edge nodes periodically broadcast alive messages on the VLANs, and notifiers note the alive messages. A missing alive message indicates a failure on one of the VLANs, and the notifier broadcasts corresponding failure messages on the VLANs. When the alive messages are restored, the notifier broadcasts corresponding repair messages. If a notifier fails to note a failure, one of the edge nodes performs a similar function although somewhat slower.

    摘要翻译: 一种具有互连边缘节点和交换节点的树状结构化通信网络中的故障处理方法和装置。 可以通过使用生成树在网络中发生故障的情况下提供连接来建立VLAN。 边缘节点中的发射器周期性地在VLAN上广播活动消息,通知器记下活着的消息。 缺少的活着消息表示其中一个VLAN发生故障,通知程序在VLAN上广播相应的故障消息。 当活动消息恢复时,通知器广播相应的修复消息。 如果通知程序无法注意到故障,则其中一个边缘节点执行类似的功能,尽管稍微慢些。

    Method and Arrangement for Failure Handling in a Network
    17.
    发明申请
    Method and Arrangement for Failure Handling in a Network 有权
    网络中故障处理的方法和布置

    公开(公告)号:US20110205884A1

    公开(公告)日:2011-08-25

    申请号:US13100057

    申请日:2011-05-03

    IPC分类号: H04L12/26

    摘要: A method and arrangement for failure handling in a tree-structured communications network having interconnected edge nodes and switching nodes. VLANs may be established by using spanning trees to provide connectivity in case of a failure in the network. Emitters in the edge nodes periodically broadcast alive messages on the VLANs, and notifiers note the alive messages. A missing alive message indicates a failure on one of the VLANs, and the notifier broadcasts corresponding failure messages on the VLANs. When the alive messages are restored, the notifier broadcasts corresponding repair messages. If a notifier fails to note a failure, one of the edge nodes performs a similar function although somewhat slower.

    摘要翻译: 一种具有互连边缘节点和交换节点的树状结构化通信网络中的故障处理方法和装置。 可以通过使用生成树在网络中发生故障的情况下提供连接来建立VLAN。 边缘节点中的发射器周期性地在VLAN上广播活动消息,通知器记下活着的消息。 缺少的活着消息表示其中一个VLAN发生故障,通知程序在VLAN上广播相应的故障消息。 当活动消息恢复时,通知器广播相应的修复消息。 如果通知程序无法注意到故障,则其中一个边缘节点执行类似的功能,尽管稍微慢些。

    Cluster-based network provisioning
    18.
    发明授权
    Cluster-based network provisioning 有权
    基于群集的网络配置

    公开(公告)号:US07577091B2

    公开(公告)日:2009-08-18

    申请号:US10939970

    申请日:2004-09-14

    IPC分类号: H04L12/26

    摘要: In the area of network provisioning, there is a problem of selecting a suitable traffic-provisioning model for large networks due to the high management complexity of the resource-efficient trunk model and the poor bandwidth efficiency of the easy-to-configure hose model. The invention is based on the idea of partitioning at least part of the network into multi-node clusters, and defining traffic limitations on at least two levels, including the intra-cluster level and the inter-cluster level, where the traffic limitations include one or more node-to-cluster traffic limitations for inter-cluster traffic. Subsequently, cluster-based provisioning of the network is performed based on the traffic limitations. The novel node-to-cluster limitations proposed by the invention are preferably applied in a cluster-based trunk or hose model on the inter-cluster level. In other words, for the description of the inter-cluster traffic (traffic between the clusters) cluster-based trunk or hose models can be used, preferably depending on the available information about the traffic. The cluster-based provisioning makes it possible to find a trade-off between management complexity and overprovisioning.

    摘要翻译: 在网络配置领域,由于资源高效的主干模型的高管理复杂性和易于配置的软管模型的较差带宽效率,存在为大型网络选择合适的流量供应模型的问题。 本发明基于将网络的至少一部分划分成多节点集群并且在包括集群内级别和集群间级别的至少两个级别上定义业务限制的想法,其中流量限制包括一个 或更多的群集间流量的节点到群集流量限制。 随后,基于流量限制来执行基于群集的网络供应。 本发明提出的新颖的节点到群集限制优选地应用于群集间级别上的基于群集的中继线或软管模型。 换句话说,对于集群间流量(集群之间的流量)的描述,可以使用基于集群的中继或软件模型,优选地取决于关于流量的可用信息。 基于集群的配置使得可以在管理复杂性和过度配置之间找到权衡。

    Method and an arrangement for transport layer control signalling in utran supporting both atm and ip transport technologies
    19.
    发明申请
    Method and an arrangement for transport layer control signalling in utran supporting both atm and ip transport technologies 审中-公开
    传输层控制信令的方法和布置,支持atm和ip传输技术

    公开(公告)号:US20070058553A1

    公开(公告)日:2007-03-15

    申请号:US10578489

    申请日:2003-11-28

    IPC分类号: H04J3/14 H04L12/56

    摘要: The present invention relates to a method and an arrangement for controlling the user plane of a UMTS Terrestrial Radio Access Network, UTRAN, comprising a first edge node connected via a Transport Network Layer to a second edge node, by using Transport Network Layer, TNL, signalling. A radio link is set up by using the Node B Application Part between the first and second edge nodes of the UTRAN, RSVP-TE based TNL signalling messages are transmitted between said first and second edge nodes for each TNL flow, and each TNL flow is identified by using RSVP-TE messages, wherein the object SESSION and SENDER_TEMPLATE comprises an IP based 5-tuple flow information, which is adapted to be used as a TNL flow identity.

    摘要翻译: 本发明涉及一种用于控制UMTS陆地无线接入网络UTRAN的用户平面的方法和装置,其包括通过传输网络层连接到第二边缘节点的第一边缘节点,通过使用传输网络层,TNL, 信令。 通过在UTRAN的第一和第二边缘节点之间使用节点B应用部分建立无线电链路,对于每个TNL流,基于RSVP-TE的TNL信令消息在所述第一和第二边缘节点之间传送,并且每个TNL流是 通过使用RSVP-TE消息来识别,其中对象SESSION和SENDER_TEMPLATE包括适于被用作TNL流标识的基于IP的5元组流信息。

    Call admission control system and method for interpreting signaling messages and controlling traffic load in internet protocol differentiated services networks
    20.
    发明申请
    Call admission control system and method for interpreting signaling messages and controlling traffic load in internet protocol differentiated services networks 失效
    呼叫接纳控制系统和方法,用于解释信令消息并控制互联网协议差分服务网络中的流量负载

    公开(公告)号:US20060198304A1

    公开(公告)日:2006-09-07

    申请号:US10595092

    申请日:2004-07-27

    IPC分类号: H04L12/26 H04L12/54

    摘要: A call admission control system and method for Internet Protocol (IP) Differentiated Services (DiffServ) network having at least one node for interpreting signaling messages and controlling traffic load in the network. The method consists of an initialization (601) and a real-time phase (602). In initialization phase (601), coefficients of the approximating hyperplanes are computed (61) and stored (62). This phase is repeated when the descriptor of a traffic class changes (63), which usually happens when nodes are configured or reconfigured. A traffic mix is admissible (67), if for each real-time traffic class both the stability (65) and the delay (66) constraints are fulfilled. Stability is tested by evaluating the number of lost packets and comparing it to the tolerated packet loss ratio for each class in that queue. Delay constraint is tested by checking if the traffic mix is below at least one of the approximating hyperplanes in the space of number of sessions for each class.

    摘要翻译: 一种用于互联网协议(IP)差分服务(DiffServ)网络的呼叫接纳控制系统和方法,其具有用于解释信令消息和控制网络中的业务负载的至少一个节点。 该方法由初始化(601)和实时阶段(602)组成。 在初始化阶段(601)中,计算(61)并存储(62)近似超平面的系数。 当业务类的描述符改变(63)时,会重复此阶段,通常在配置或重新配置节点时发生。 如果对于每个实时交通类来说,流量混合是可接受的(67),则稳定性(65)和延迟(66)约束都得到满足。 通过评估丢失数据包的数量并将其与该队列中的每个类别的容忍丢包率进行比较来测试稳定性。 通过检查流量混合是否低于每个类的会话空间中的近似超平面中的至少一个来测试延迟约束。