单项选择题
A.[Quidway]stp enable B.[Quidway]stp enable all C.[Quidway-Ethernet0/1]stp enable D.[Quidway-Ethernet0/1]stp enable all
A.Forward Delay B.2倍Forward Delay C.Hello Time D.2倍Hello Time
A.0.5倍Forward Delay B.1倍Forward Delay C.2倍Forward Delay D.3倍Forward Delay