公开(公告)号：US20060013210A1

公开(公告)日：2006-01-19

申请号：US10871440

申请日：2004-06-18

申请人： Mark Bordogna ,  Christopher Hamilton ,  Deepak Kataria ,  Pravin Pathak ,  Mark Simkins

发明人： Mark Bordogna ,  Christopher Hamilton ,  Deepak Kataria ,  Pravin Pathak ,  Mark Simkins

IPC分类号： H04L12/56

CPC分类号： H04L47/10 ,  H04L45/00 ,  H04L45/24 ,  H04L47/122 ,  H04L47/2416 ,  H04L47/2441

摘要： A method and apparatus are disclosed for per-service flow protection and restoration of data in one or more packet networks. The disclosed protection and restoration techniques allow traffic to be prioritized and protected from the aggregate level down to a micro-flow level. Thus, protection can be limited to those services that are fault sensitive. Protected data is duplicated over a primary path and one or more backup data paths. Following a link failure, protected data can be quickly and efficiently restored without significant service interruption. A received packet is classified at each end point based on information in a header portion of the packet, using one or more rules that determine whether the received packet should be protected. At an ingress node, if the packet classification determines that the received packet should be protected, then the received packet is transmitted on at least two paths. At an egress node, if the packet classification determines that the received packet is protected, then multiple versions of the received packet are expected and only one version of the received packet is transmitted.

摘要翻译： 公开了用于一个或多个分组网络中的每个服务流保护和数据恢复的方法和装置。 所公开的保护和恢复技术允许流量被优先排序并从聚合级别保护到微流量级别。 因此，保护​​可以限于那些故障敏感的服务。 受保护的数据在主路径和一个或多个备份数据路径上复制。 在链路故障之后，可以快速有效地恢复受保护的数据，而不会有重大的业务中断。 使用确定接收到的分组是否应被保护的一个或多个规则，基于分组的报头部分中的信息，在每个终点处分类所接收的分组。 在入口节点，如果分组分类确定接收到的分组应该被保护，则所接收的分组在至少两个路径上被传送。 在出口节点，如果分组分类确定接收到的分组被保护，则预期接收分组的多个版本，并且仅传送所接收分组的一个版本。