公开(公告)号：EP2949060A1

公开(公告)日：2015-12-02

申请号：EP13701454.4

申请日：2013-01-25

申请人： Telefonaktiebolaget L M Ericsson (Publ)

发明人： FULIGNOLI, Annamaria ,  LANZONE, Sergio ,  CORTI, Andrea

IPC分类号： H04J3/14

CPC分类号： H04B10/032 ,  H04B10/27 ,  H04J3/14 ,  H04J2203/0028 ,  H04J2203/006

摘要： For protecting traffic from a source client entity (CE1) to a destination client entity (CE2) via an optical transport network and attachment circuits at ingress (A,B) and egress (C,D) nodes, there are multiple paths within the OTN, and the attachment circuits are dual homed. By sending (120) an indication of operational status of the dual homed attachment circuits within overhead associated with the traffic and sent with the traffic through the network, a selection can be made (130) of which of the provided paths and attachment circuits to use for the traffic, based on the indicated operational status, and on OTN fault detection, to protect against a fault. Thus protection can extend across the edge nodes without interworking of separate protection schemes and without a control plane. Traffic flows can be multiplexed at the ingress, with the indication in the overhead having separate indications for each of the traffic flows.

摘要翻译： 为了通过光传输网络和进入（A，B）和出口（C，D）节点处的连接电路来保护来自源客户端实体（CE1）到目的客户端实体（CE2）的业务，OTN内有多条路径 ，并且附件电路是双归位的。 通过在与业务相关联的开销内发送（120）双归属连接电路的操作状态的指示并通过网络与业务一起发送（120），可以选择（130）所提供的路径和附件电路中的哪一个使用 对于流量，根据指示的运行状态，以及OTN故障检测，防止出现故障。 因此，保护​​可以跨越边缘节点延伸，而不需要单独的保护方案和没有控制平面的交互。 业务流可以在入口处多路复用，并且开销中的指示具有针对每个业务流的单独指示。

公开(公告)号：EP2949061A1

公开(公告)日：2015-12-02

申请号：EP13719511.1

申请日：2013-04-25

申请人： Telefonaktiebolaget L M Ericsson (Publ)

发明人： FULIGNOLI, Annamaria ,  LANZONE, Sergio ,  CORTI, Andrea

IPC分类号： H04J3/14

摘要： For protecting traffic from a source client entity (CE1) to a destination client entity (CE2) via an optical transport network and attachment circuits at ingress (A,B) and egress (C,D) nodes, there are multiple paths within the OTN, and the attachment circuits are dual homed. By sending (120) an indication of operational status of the dual homed attachment circuits within overhead associated with the traffic and sent with the traffic through the network, a selection can be made (130) of which of the provided paths and attachment circuits to use for the traffic, based on the indicated operational status, and on OTN fault detection, to protect against a fault. Thus protection can extend across the edge nodes without interworking of separate protection schemes and without a control plane. Traffic flows can be multiplexed at the ingress, with the indication in the overhead having separate indications for each of the traffic flows.