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    • 3. 发明申请
    • Method and Arrangement for Failure Handling in a Network
    • 网络中故障处理的方法和布置
    • US20080291822A1
    • 2008-11-27
    • US11916565
    • 2005-06-14
    • Janos FarkasCsaba AntalLars Westberg
    • Janos FarkasCsaba AntalLars Westberg
    • H04L12/24
    • H04L12/4641H04L12/462H04L41/0213H04L41/06H04L43/10H04L45/00
    • 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.
    • 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。
    • 4. 发明申请
    • Cluster-based network provisioning
    • 基于群集的网络配置
    • US20050169179A1
    • 2005-08-04
    • US10939970
    • 2004-09-14
    • Csaba AntalJanos HarmatosAlpar JuttnerLars Westberg
    • Csaba AntalJanos HarmatosAlpar JuttnerLars Westberg
    • H04L12/24H04L12/26H04L12/28
    • H04L41/0806H04L41/5003H04L41/5009H04L41/5054
    • 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.
    • 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。
    • 5. 发明授权
    • Method and arrangement for failure handling in a network
    • 网络中故障处理的方法和布置
    • US07965621B2
    • 2011-06-21
    • US11916565
    • 2005-06-14
    • János FarkasCsaba AntalLars Westberg
    • János FarkasCsaba AntalLars Westberg
    • G01R31/08
    • H04L12/4641H04L12/462H04L41/0213H04L41/06H04L43/10H04L45/00
    • 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.
    • 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。
    • 6. 发明授权
    • Method and arrangement for failure handling in a network
    • 网络中故障处理的方法和布置
    • US08576689B2
    • 2013-11-05
    • US13100057
    • 2011-05-03
    • János FarkasCsaba AntalLars Westberg
    • János FarkasCsaba AntalLars Westberg
    • H04L5/20
    • H04L12/4641H04L12/462H04L41/0213H04L41/06H04L43/10H04L45/00
    • 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.
    • 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。
    • 10. 发明授权
    • Cluster-based network provisioning
    • 基于群集的网络配置
    • US07577091B2
    • 2009-08-18
    • US10939970
    • 2004-09-14
    • Csaba AntalJános HarmatosAlpár JüttnerLars Westberg
    • Csaba AntalJános HarmatosAlpár JüttnerLars Westberg
    • H04L12/26
    • H04L41/0806H04L41/5003H04L41/5009H04L41/5054
    • 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.
    • 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。