公开(公告)号：US20150085647A1

公开(公告)日：2015-03-26

申请号：US14325242

申请日：2014-07-07

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

IPC: H04L12/24 ,  H04L12/703 ,  H04L12/707

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/245 ,  H04L47/266 ,  H04L47/30 ,  Y02D50/30

Abstract: A packet switched communication system to support hitless protection includes a packet processor; a traffic manager with a buffer sized to compensate a maximum skew of each hitless path pair of a working path and a protecting path; and a hitless processor positioned between the packet processor and the traffic manager, wherein an interface between hitless processor and traffic manager has flow control to start or stop (XON/XOFF) traffic.

Abstract translation: 支持无中断保护的分组交换通信系统包括分组处理器; 具有缓冲器的流量管理器，其大小用于补偿工作路径和保护路径的每个无中断路径对的最大偏移; 以及位于分组处理器和流量管理器之间的无中断处理器，其中无中断处理器和流量管理器之间的接口具有启动或停止（XON / XOFF）流量的流量控制。

公开(公告)号：US09369409B2

公开(公告)日：2016-06-14

申请号：US14307573

申请日：2014-06-18

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

IPC: H04L12/939 ,  H04L12/721 ,  H04L12/735 ,  H04L12/703 ,  H04L12/723 ,  H04L12/801

CPC classification number: H04L49/557 ,  H04L45/1283 ,  H04L45/28 ,  H04L45/50 ,  H04L45/68 ,  H04L45/70 ,  H04L47/34

Abstract: A method and system are described for providing hitless protection in a packet switched network having source nodes and destination nodes. The method includes enabling a working path and a protecting path between the source and destination nodes. The working path is non-overlapping with respect to the protecting path. The method further includes replicating traffic in a given one of the source nodes to generate replicated traffic. The method also includes forwarding the traffic and the replicated traffic through a working path and a protecting path, respectively, from the given one of the source nodes to a particular one of the destination nodes. The method additionally includes delivering a hitless-protected service in the particular one of the destination nodes by selecting traffic packets received from either the working path or the protecting path.

Abstract translation: 描述了一种用于在具有源节点和目的地节点的分组交换网络中提供无中断保护的方法和系统。 该方法包括启用源节点和目的节点之间的工作路径和保护路径。 工作路径与保护路径不重叠。 该方法还包括在给定的一个源节点中复制业务以生成复制业务。 该方法还包括将业务和复制的业务分别通过工作路径和保护路径转发到从给定的一个源节点到目标节点的特定一个。 该方法还包括通过选择从工作路径或保护路径接收到的业务分组来递送目标节点中的特定一个节点中的无受保护的服务。

公开(公告)号：US09537757B2

公开(公告)日：2017-01-03

申请号：US14454957

申请日：2014-08-08

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

IPC: H04L12/707 ,  H04L12/735 ,  H04L12/709 ,  H04L12/703 ,  H04L12/801

CPC classification number: H04L45/22 ,  H04L45/1283 ,  H04L45/245 ,  H04L45/28 ,  H04L47/34 ,  Y02D50/30

Abstract: A method is provided for traffic aggregation in a hitless protected packet switched network having source and destination nodes. The method includes enabling a working path and a protecting path between the source and destination nodes. The working path is non-overlapping with respect to the protecting path. The method includes generating, using a processor, internal marker packets at working and protecting input ports of the source nodes. Each market packet represents a respective marker time period. The method includes transmitting the marker packets to working and protecting output ports of the source nodes, by the working and protecting input ports of the source nodes. The method includes selectively aggregating, at each of the working and protecting output ports of the source nodes, hitless traffic sent from different working and protecting inputs ports of the source nodes to provide an aggregated flow there from, responsive to the marker packets.

Abstract translation: 提供了一种用于具有源和目的地节点的无中继保护分组交换网络中的业务聚合的方法。 该方法包括启用源节点和目的节点之间的工作路径和保护路径。 工作路径与保护路径不重叠。 该方法包括在工作和保护源节点的输入端口时生成使用处理器的内部标记分组。 每个市场包代表相应的标记时间段。 该方法包括通过工作和保护源节点的输入端口，将标记数据包发送到工作和保护源节点的输出端口。 该方法包括在源节点的每个工作和保护输出端口选择性地聚合来自源节点的不同工作和保护输入端口的无中断业务，从而响应于标记分组来提供聚合流。