The other mechanism (AODV-SRM) chose a route maintenance method according to the network topology.If the origination had multi routes to the destination, the origination would maintain backup routes.

• 方案二(AODV-SRM)是根据网络拓扑自主选择路由维护方式，如果源节点有多条到达宿节点的路由，则由源节点维护到宿节点的备用路由；