[单选题]

C．atalyst 6500(Catalyst OS(CatOS)系统)中配置Uplink Fast生成树可选功能的命令格式是( )。
A．set spantree uplink fast enable
B．spanning-tree uplink fast
C．spanning-tree vlan root primary
D．spanning-tree uplink fast max-update-rate <0-32000>

C．atalyst 6500(Catalyst OS(CatOS)系统)中配置Uplink Fast生成树可选功能的命令格式是( )。A．set spantree uplink fast enableB．spanning-tree uplink fastC．spanning-tree vlan root primaryD．spanning-tree uplink fast max-update-rate <0-32000>