关于iou-web不支持的功能的疑问

ciscodevices

为什么642-813的AAA实验，iou-web不支持vlan access-map这个命令，routereflector.com上的说明没有说不支持这个命令啊，官网上写的不支持的功能是这些，哪位高手能提示一下，下面哪个功能是对应vlan access-map的
IOU/IOL does not support all features IOS does. Sometimes users report me what IOU/IOL can or can’t do. I collected a list of features which do not work on IOU/IOL:
Not supported/working on iou-web

• Trunking over Cloug
  

Not supported/working on Layer 3 IOL (Linux)

• Multicast with BSR
• NTP Authentication
• PPPoE (working on 12.4, and 15.2(2.3)T)
• Routing loops (IOL will crash)
  

Not supported/working on Layer 2 IOL (Linux)

• 802.1q Tunneling
• Cisco ISL trunks
• DHCP Snooping
• HSRP address not pingable
• L2 PortChannel (not working on 12.2, working on 15.0)
• L3 PortChannel
• NVI NAT (classic NAT works on TPGEN images only)
• PVLAN
• QinQ
• Routing loops (IOL will crash)
• SPAN/RSPAN/ERSPAN
• VTP version 2 (VTP version 1 works)
  

Not supported/working on Layer 3 IOU (Solaris)

• VTP version 2 (VTP version 1 works)
  

Not supported/working on Layer 2 IOU (Solaris)

• VTP version 2 (VTP version 1 works)
  

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