以太网中双上行组网的弹性链路的设计与实现

摘要

In order to avoid the formation of loop network topology in dual uplink network,and provide redundant backup link and fast switching,the traditional method is to use the STP protocol.But the convergence speed of STP is more slowly,loss rate is higher,switching time is longer,and the protocol is too complex that will occupy a lot of resources of Ethernet switch.To solve these problems,this paper puts forward a kind of solution that resilient link (RLink) in dual uplink network to achieve the main preparation of link redundancy and fast switching.The testing results shows that it can achieve the expected function,and occupy less resources,easy to operate.%为了在双上行组网的网络拓扑中避免形成环路,并进行冗余备份和快速倒换,传统方法是使用STP.但现有的STP的收敛速度慢,丢失流量较多,倒换时间较长,且协议复杂,会占用以太网交换机的大量资源.针对这些问题,提出了一种在双上行组网中实现主备链路冗余备份和快速倒换的弹性链路(RLink,Resilient Link)解决方案.对该方案的测试表明,能够实现预期的功能,并且占用资源少,易于操作.