公开(公告)号：US20150043330A1

公开(公告)日：2015-02-12

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

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。