一种跨设备链路聚合技术的设计和实现

Design and Implementation of a Multi-chassis Link Aggregation Group Technology

采用链路聚合技术可以有效地提供链路的冗余备份,却无法保障聚合接口故障或设备故障,一旦出现故障整个网络业务将中断。为了提供设备节点的冗余备份,本文使用跨设备链路聚合技术对网络侧落地设备聚合口进行保护,设计一种报文用于跨设备链路聚合主辅节点之间的协商,将跨设备链路聚合技术与双归保护相结合,设计一套完整的倒换机制,并通过在分组光传送网(POTN)设备上搭建拓扑进行验证,测试结果表明采用跨设备链路聚合技术提供设备节点的冗余保护且保护倒换时间不超过50 ms。

The link aggregation group technology can effectively provide link redundancy backup,but cannot guarantee the aggregation interface failure or device failure.Once a failure occurs,the entire network service is interrupted.In order to provide redundancy backup of device nodes,multi-chassis link aggregation group technology is used in this paper to protect the aggregation port of the network side device.A message is designed for the negotiation between the active and standby nodes of multi-chassis link aggregation group,and a complete switching mechanism is designed by combining multi-chassis link aggregation group technology with dual-homing protection.By building up the topology on the packet optical transport network device,the result shows that the multi-chassis link aggregation group technology provides redundant protection of the device nodes and the switching time is not more than 50 ms.