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1. 发明公开

EP2965467A1 A NETWORK ELEMENT FOR A TELECOMMUNICATIONS NETWORK HAVING DECOUPLED CONTROL AND DATA PLANES 有权
标题翻译：网络元件，以解耦控制和数据水平的电信网络
公开(公告)号：EP2965467A1
公开(公告)日：2016-01-13
申请号：EP13708412.5
申请日：2013-03-07
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： CAVIGLIA, Diego , REBELLA, Paolo , CECCARELLI, Daniele
IPC分类号： H04L12/24
CPC分类号： H04L41/0659 , H04L41/06 , H04L41/0826 , H04L41/0836 , H04L45/50
摘要： A network element for a communications network having decoupled control and data planes may be in either a first state, the control plane and data plane are configured to interact, whereas, in the second state, the network element suppresses a control message for the data plane such that the configuration of the data plane is preserved. Accordingly, the network element may be in a second state when the data plane is undergoing maintenance such that there is no interaction between the control and data planes.

2. 发明公开

EP2748972A1 RECOVERY OF SPLIT ARCHITECTURE CONTROL PLANE 审中-公开
标题翻译：恢复分体式架构对照组降低
公开(公告)号：EP2748972A1
公开(公告)日：2014-07-02
申请号：EP11790954.9
申请日：2011-11-29
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： REBELLA, Paolo , CECCARELLI, Daniele , CAVIGLIA, Diego
IPC分类号： H04L12/24 , H04L12/70
CPC分类号： H04L41/0672 , H04L41/0213 , H04L41/042 , H04L41/0654 , H04L41/0873 , H04L41/0893 , H04L45/28
摘要： A method of operating a control plane having a centralised network management system (10), control domain servers (20) and a plurality of forwarding elements (30), for controlling respective network entities (L2), and grouped into control domains (21, 22, 23). Each domain has a control domain server. Automatic checking for inconsistencies (110, 115, 210, 310, 320, 450) between the records held at the different parts of the control plane, involves comparing checklists of the records of the circuits stored at the different parts of the control plane. If an inconsistency is found, there is automatic updating (120, 220, 230, 460) of the records using a copy sent from another of the parts of the control plane. The checklists can avoid the need to forwarding entire copies.

3. 发明公开

EP2686974A1 METHOD AND APPARATUS FOR OPTICAL PATH VALIDATION IN AN OPTICAL NETWORK 审中-公开
标题翻译：方法和装置光学WEGVALIDIERUNG在光网络
公开(公告)号：EP2686974A1
公开(公告)日：2014-01-22
申请号：EP12706254.5
申请日：2012-02-28
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CAVIGLIA, Diego , BOTTARI, Giulio , CECCARELLI, Daniele
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04J14/0257 , H04J14/0267 , H04J14/0268 , H04J14/0269 , H04J14/0271
摘要： The invention relates to a method in a border node of an optical network and in an external optical channel originating apparatus and to a border node of an optical network and a router. The invention is particularly applicable to optical path validation in an optical network for an externally originating optical channel. The invention may be used during an optical path fault recovery operation. In the method in a border node of an optical network optical channel traffic parameter associated with an optical channel are received from an optical channel originator external to the optical network. The received optical channel traffic parameters are used to determine the suitability of at least one optical path within the optical network for an externally originating optical channel. If a suitable optical path is determined an optical channel availability message indicating the availability at the border node of an optical path within the optical network for the optical channel is sent to the optical channel originator. In the method in an optical channel originator external to an optical network the optical channel traffic parameters associated with an optical channel originating at the optical channel originator are sent to a border node of the optical network. An optical channel availability message indicating the availability at the optical network border node of an optical path within the optical network for the optical channel with which the optical channel traffic parameters are associated is received from the border node. An available optical channel status of the optical channel is determined from the received optical channel availability message for the optical channel.

4. 发明授权

EP2577898B1 CONFIGURING A PATH IN AN OPTICAL COMMUNICATIONS NETWORK 有权
标题翻译：在光通信网络路径配置
公开(公告)号：EP2577898B1
公开(公告)日：2015-01-21
申请号：EP10726058.0
申请日：2010-06-16
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： BOTTARI, Giulio , CAVIGLIA, Diego , CECCARELLI, Daniele
IPC分类号： H04J14/02
CPC分类号： H04B10/27 , H04J14/02

5. 发明公开

EP2719116A1 METHOD OF AND APPARATUS FOR CONFIGURING QUALITY OF SERVICE 有权
标题翻译：方法和设备配置服务的质量
公开(公告)号：EP2719116A1
公开(公告)日：2014-04-16
申请号：EP11731380.9
申请日：2011-07-14
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CECCARELLI, Daniele , CAVIGLIA, Diego , FONDELLI, Francesco
IPC分类号： H04L12/00
摘要： In a method of configuring quality of service for a return path of a bi-directional label switched path within a network a label information context for a quality of service configuration of the return path of a label switched path is configured separately from a quality of service configuration for the forward path. Path set up messages are formed containing a return path quality of service object indicating the quality of service configuration for the return path separately from a quality of service configuration for the forward path.

6. 发明公开

EP2454855A1 RECOVERY MECHANISM FOR POINT-TO-MULTIPOINT TRAFFIC 审中-公开
标题翻译：威斯康星州立大学
公开(公告)号：EP2454855A1
公开(公告)日：2012-05-23
申请号：EP09780708.5
申请日：2009-07-16
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CECCARELLI, Daniele , CAVIGLIA, Diego , FONDELLI, Francesco
IPC分类号： H04L12/56
CPC分类号： H04L45/22 , H04L12/437 , H04L41/0803 , H04L45/10 , H04L45/28 , H04L45/50
摘要： A connection-oriented network (5) has a point-to-multipoint working path (10) between a source node (A) and a plurality of destination nodes (B-F). On detection of a failure in the working path, an indication of the failure is sent to a first node (e.g. node A) identifying the point of failure. The indication is sent via a control plane of the network. The first node selects one of a plurality of point-to-multipoint backup paths (21-25) based on the point of failure. Each backup paths connects the first node to the plurality of destination nodes. There is a point-to-multipoint backup path (21-25) for each of a plurality of possible points of failure along the working path. The backup paths (21-25) can be pre-configured to carry traffic in advance of the detection of failure. Alternatively, the first node can signal to nodes of the selected backup path to fully establish the backup path when it is required.
摘要翻译：面向连接的网络（5）在源节点（A）和多个目的地节点（B-F）之间具有点对多点的工作路径（10）。在检测到工作路径中的故障时，向故障点的第一节点（例如节点A）发送故障指示。该指示通过网络的控制平面发送。第一节点基于故障点选择多个点对多点备份路径（21-25）中的一个。每个备份路径将第一个节点连接到多个目标节点。对于沿着工作路径的多个可能的故障点中的每一个，存在点对多点备用路径（21-25）。备用路径（21-25）可以预先配置为在故障检测之前提供流量。或者，第一节点可以向所选备份路径的节点发信号，以便在需要时完全建立备份路径。

7. 发明公开

EP2191611A1 DESIGNING A NETWORK 有权
标题翻译：网络草案
公开(公告)号：EP2191611A1
公开(公告)日：2010-06-02
申请号：EP08804703.0
申请日：2008-09-24
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CAVIGLIA, Diego , BOTTARI, Giulio
IPC分类号： H04L12/24 , H04L29/06 , G01R31/08
CPC分类号： H04L41/145 , H04L41/12
摘要： A method of designing a network given a set of network nodes, a set of adjacencies defining which nodes can be connected together directly and so are topologically adjacent and a traffic matrix (1) comprising a plurality of entries each indicating a source node, a destination node and a number being the number of connections from the source node to the destination node that are to be present in the network; the method comprising the steps of: simulating the network nodes (A, B, C) and the adjacencies (21, 22, 23) thereof to generate a simulated network; simulating applying the traffic matrix entry by entry, each application of an entry causing a number of links consistent with the entry to be simulated between the source and destination nodes indicated in the entry, via a chain of topologically adjacent nodes; simulating the effect of at least one failure on the simulated network, including simulating the re-routing of the links onto a replacement chain where the chain is broken; determining the number of links between each pair of topologically adjacent nodes; repeating these steps for a plurality of iterations, the order in which the entries in the traffic matrix and the faults are applied being different in different iterations; for each iteration and for each topologically adjacent pair of nodes, determining an average number of links between the pair of nodes for all iterations so far; for each iteration and for each pair of topologically adjacent pair of nodes, determining a variance in the average number of links for all iterations so far; for each iteration, determining an average variance in the average number of links for all iterations so far, the average being taken across the entire network; for each iteration, determining a variance in the variances in the average number of links for all iterations so far, the variance being taken across the entire network; determining when to cease iterating based upon the variance in the variances in the average number of links.

8. 发明授权

EP2652910B1 MESSAGE PASSING TO ASSURE DELETION OF LABEL SWITCHED PATH 有权
标题翻译：新闻传输，以确保标签交换路径的消光
公开(公告)号：EP2652910B1
公开(公告)日：2014-11-12
申请号：EP11790783.2
申请日：2011-12-01
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CECCARELLI, Daniele , CAVIGLIA, Diego , FONDELLI, Francesco
IPC分类号： H04L12/701 , H04L12/703 , H04L12/707 , H04L12/723 , H04L12/913 , H04L12/24
CPC分类号： H04L41/0654 , H04L45/00 , H04L45/22 , H04L45/28 , H04L45/50 , H04L47/724
摘要： A label switched path through a network of nodes, is torn down by sending a message along the path from an ingress node. If there is a fault along the path, a path error message (2) is sent back along the path to the ingress node. The ingress node uses a different route bypassing the fault to alert (3) a further one of the nodes (NE5, NE6) on that path beyond the indicated fault, to cause that further node to continue the tearing down for other nodes on that path beyond the indicated fault by sending a further message (4) along the portion of the path beyond the indicated fault, to indicate to the other nodes to continue the tear down. This enables the ingress node to clean up the rest of the path beyond the fault, to avoid leaving unused capacity unavailable for reuse, and to avoid time consuming manual clean up.

9. 发明公开

EP2436148A1 OWNERSHIP TRANSFER OF A LABEL SWITCHED PATH 失效
标题翻译：标签交换路径的所有权转让
公开(公告)号：EP2436148A1
公开(公告)日：2012-04-04
申请号：EP09779591.8
申请日：2009-05-29
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： FONDELLI, Francesco , CAVIGLIA, Diego , CECCARELLI, Daniele
IPC分类号： H04L12/24 , H04L12/56
CPC分类号： H04L45/00 , H04L41/0213 , H04L41/0816 , H04L45/50
摘要： Control of a label switched path (12) established in a network (10) is transferred between a management plane and a control plane of the network. A node (C) receives a message indicating a change in control of the label switched path (12), the message identifying the label switched path by a cross-connection identifier corresponding to an entry (54) in the control data (52) stored at the node which identifies data plane ingress and egress segments cross-connected at the node. Control data at the node is updated based on the identified label switched path (12). The message includes a list of cross-connection identifiers for nodes (C,E,F) along the label switched path (12). The cross-connection identifier can be an mplsXCIndex.

10. 发明公开

EP2652918A1 SEGMENT RECOVERY IN CONNECTION-ORIENTED NETWORK 失效
标题翻译：连接定向网络中的分段恢复
公开(公告)号：EP2652918A1
公开(公告)日：2013-10-23
申请号：EP10796011.4
申请日：2010-12-15
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： CECCARELLI, Daniele , REBELLA, Paolo , CAVIGLIA, Diego
IPC分类号： H04L12/56
CPC分类号： H04L45/28 , H04L45/22 , H04L45/50
摘要： A connection-oriented network has a working path and a segment recovery path for a segment of the working path. The working path has a branch node at an end of the segment where the segment recovery path connects to the working path. The branch node is not located at an end node of the working path. Control plane signalling is received at an end node of the working path from a node along the working path, indicating that a failure has occurred along the working path. The end node determines, from the received control plane signalling, if the failure has occurred outside the segment of the working path. When it is determined that the failure has occurred outside the segment of the working path, a notification is sent to the branch node. The notification is an instruction not to reroute to the segment recovery path.
摘要翻译：面向连接的网络具有用于工作路径段的工作路径和段恢复路径。工作路径在段恢复路径连接到工作路径的段的末端具有分支节点。分支节点不在工作路径的末端节点处。在沿着工作路径的节点的工作路径的端节点处接收控制平面信令，指示沿着工作路径发生故障。终端节点从接收到的控制平面信令中确定故障是否发生在工作路径的分段之外。当确定故障发生在工作路径段之外时，通知被发送到分支节点。通知是一条不重新路由到分段恢复路径的指令。

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