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1. 发明授权

US09537711B2 Method for providing protected connection between L2 communication networks 有权
标题翻译：在L2通信网络之间提供受保护连接的方法
公开(公告)号：US09537711B2
公开(公告)日：2017-01-03
申请号：US13747878
申请日：2013-01-23
申请人： ECI Telecom Ltd.
发明人： Shell Nakash
IPC分类号： H04L12/24
CPC分类号： H04L41/0668 , H04L41/0663
摘要： A method and system are provided for connecting at least three provider peer elements PEs located in two L2 network sites, via a provider network, wherein at least in one of the L2 sites and two of the provider peer elements PEs are connected to a customer equipment CE forming together a dual homing structure. The method and system are characterized in that they rely on the use of only a single PW in the provider network that extends between PEs of the two L2 network sites while ensuring traffic protection for the PW in the provider network, and ensuring that in case of a failure of one of the PEs or its connection to the customer equipment at one of the sites, the other L2 network site remains unaware of the failure, so that once established, traffic communication over the PW is maintained like no failure has happened.
摘要翻译：提供了一种方法和系统，用于经由提供商网络连接位于两个L2网络站点中的至少三个提供商对等体元素PE，其中至少一个L2站点和两个提供商对等体元素PE连接到客户设备 CE组合双重归位结构。该方法和系统的特征在于，它们依赖于在提供商网络中仅使用在两个L2网络站点的PE之间延伸的单个PW，同时确保提供商网络中的PW的流量保护，并且确保在一个PE的故障或者其中一个站点上的客户设备的故障，另一个L2网络站点仍然不知道该故障，一旦建立，PW上的流量通信就会保持不变，没有发生故障。

2. 发明授权

US09686182B2 Method for implementing fast re-routing (FRR) 有权
公开(公告)号：US09686182B2
公开(公告)日：2017-06-20
申请号：US14607349
申请日：2015-01-28
申请人： ECI TELECOM LTD.
发明人： Shell Nakash
IPC分类号： H04L12/28 , H04L12/703 , H04L12/707 , H04L12/723
CPC分类号： H04L45/28 , H04L45/22 , H04L45/50
摘要： A method for providing a protected fast rerouting scheme for traffic conveyed in a network comprising a working path and a first backup path for conveying the traffic in case of a node failure. The method enables conveying traffic when two simultaneous failures occur, a failure of a link and/or of a node, belonging to the working path and the other—a failure occurring at a link and/or a node belonging to the first backup path. Upon detecting occurrence of a link/node failure along the working path, traffic is diverted to the first backup path, and upon detecting a concurrent failure at the downstream link/node at the first backup path, traffic is diverted to a second backup path extending from a node belonging to the first backup path and merges with the working path at a node located downstream of the failure that occurred at the working path.

3. 发明授权

US09197570B2 Congestion control in packet switches 有权
标题翻译：分组交换机拥塞控制
公开(公告)号：US09197570B2
公开(公告)日：2015-11-24
申请号：US13869514
申请日：2013-04-24
申请人： ECI Telecom Ltd.
发明人： Shell Nakash , Gideon Agmon
IPC分类号： H04L12/851 , H04L12/801
CPC分类号： H04L47/2483 , H04L47/24 , H04L47/29
摘要： A method is provided for managing congestion of traffic in a packet switch, which comprises the steps of: providing more than two different congestion levels at the switch for handling traffic associated with at least two different priorities, one being a low priority traffic and another being a high priority traffic; for each traffic flow having a specific destination and priority, determining a current congestion level that matches a congestion control level which is selected from among the more than two congestion control levels, and associating a different set of operations for handling each respective traffic flow, depending on its priority and its current congestion level, and for each traffic flow, performing operations that match the respective associated set of operations, and wherein a rate at which these operations are performed for each respective traffic flow increases when a higher congestion level occurs at that respective traffic flow.
摘要翻译：提供了一种用于管理分组交换机中的业务拥塞的方法，其包括以下步骤：在交换机处提供两个以上不同的拥塞级别，以处理与至少两个不同优先级相关联的业务，一个是低优先级业务，另一个高优先级流量; 对于具有特定目的地和优先级的每个业务流，确定与从多于两个拥塞控制级别中选择的拥塞控制级别匹配的当前拥塞级别，并且关联用于处理每个相应业务流的不同操作集合，依赖在其优先级和其当前拥塞水平以及针对每个业务流的情况下执行与相应的相关联的一组操作相匹配的操作，并且其中对于每个相应业务流执行这些操作的速率在发生较高拥塞水平时增加各自的交通流量。

4. 发明授权

US08902729B2 Method for fast-re-routing (FRR) in communication networks 有权
标题翻译：通信网络中快速重路由（FRR）的方法
公开(公告)号：US08902729B2
公开(公告)日：2014-12-02
申请号：US13649210
申请日：2012-10-11
申请人： ECI Telecom Ltd.
发明人： Shell Nakash
IPC分类号： H04L12/26 , H04L12/723 , H04L12/703 , H04L12/437
CPC分类号： H04L45/28 , H04L12/437 , H04L45/502
摘要： A method is described to enable carrying out a fast reroute protection technique which provides both link and node protection without traffic duplication, without the need to distinguish between link and node failures, and without replicating traffic. The technique covers concurrent Working and backup logical path failures, and in particular LSP logical paths. The method is adapted to provide a “Dual Failure Protection” (DFP), and is expandable to various multi-failure scenarios.
摘要翻译：描述了一种方法，以便能够执行快速重路由保护技术，其提供链路和节点保护，而不需要流量复制，而不需要区分链路和节点故障，并且不需要复制业务。该技术涵盖并发工作和备份逻辑路径故障，特别是LSP逻辑路径。该方法适用于提供“双重故障保护”（DFP），并可扩展到各种多故障场景。

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