多项选择题
A.IRF 可以采用链路聚合技术实现堆叠口的冗余备份B.IRF 无法采用链路聚合技术来实现堆叠口的冗余备份C.IRF 可以实现跨设备链路聚合D.IRF 无法实现跨设备链路聚合
A.Link Aggregation Contain ProtocolB.Link Aggregation Control ProtocolC.Rapid Ring Primary ProtocolD.Rapid Ring Protection Protocol
A.Complete StateB.Link-Down StateC.Failed StateD.Link-Up StateE.Preforwarding State