用packet tracer模拟无线网为什么配置ssid的时候出现这种问题？

lubosun

为什么配置ssid的时候出现这种问题？正常情况下不是应该进入R3(config-if-ssid)模式吗？
R3#config
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#int dot
R3(config)#int dot11Radio 0/1/0
R3(config-if)#ip add 172.16.10.1 255.255.255.0
R3(config-if)#no shut
R3(config-if)#ssid admin

%LINK-5-CHANGED: Interface Dot11Radio0/1/0, changed state to administratively down

%LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0/1/0, changed state to down

%LINK-5-CHANGED: Interface Dot11Radio0/1/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0/1/0, changed state to up
R3(config-if)#

lubosun

写成
Router(config-if)#dot11 ssid admin
Router(config-ssid)#
就行了

lubosun

进入的模式也不对啊！用dot11 ssid admin 进入后是R3(config-ssid)#   和书上的R3(config-if-ssid)#明显不一样的啊!求大神解决