下面是某交换机的部分配置信息，解释(n)处标有下画线部分的含义。
SwitchA＞
SwitchA＞enable
SwitchA#
SwitchA#config terminal (1)
SwitchA(config)#
SwitchA(config)#ip address 192.168.1.1 255.255.255.0
SwitchA(config)#interface fastethernet0/1
SwitchA(config—if)#speed 100 (2)
SwitchA#vlan database
SwitchA(vlan)#vtp server (3)
SwitchA(vlan)#vlan 2
SwitchA(vlan)#vlan 3 name vlan3 (4)
SwitchB#config terminal
SwitchB#vlan database
SwitchB(vlan)#vlan client (5)
SwitchB(config)#interface f0/9
SwitchB(config—if)#switchport mode access
SwitchB(config)#switchport access vlan 2 (6)
SwitchA(config)#interface f0/23
SwitchA(config—if)#switchport mode trunk (7)
SwitchA(config-—if)#spanning-·tree vlanl port-priortiy 10
SwitchA(config-if)#spanning-tree vlan2 port-priortiy 10
SwitchA(config—if)#exit
SwitchA(config)#interface f0/24
SwitchA(config-if)#spanning-tree vlan3 port-priortiy 10
SwitchA(config-if)#spanning-tree vlan4 port--priortiy 10
SwitchA(config—if)#end
SwitchA(config)#interface f0/23
SwitchA(config—if)#spanning—tree vlan2 cost 30 (8)
SwitchA(config-if)#end
SwitchA#
!
!
