Introduction
Configuration example using multiple VLANs with multiple SSIDs
Components used
- Any MLS switch which runs IOS
- Aironet Access Points
Assumption
I assume that you have configured the DHCP pool on the IOS switch or the Router or on the dedicated DHCP server.
Design
Assuming we have 3 VLANs (1,2 and 3) with native as 1 and mapping to 3 different SSIDs (one , two and three) on any Aironet Access Points.
- SSID ONE uses WEP encryption
- SSID TWO uses WPA-PSK
- SSID THREE uses WPA-2-PSK
- Assuming the AP Ethernet port is connected to fa 2/1 port of the switch.
- Broadcasting all the 3 SSIDs.
Configuration on the AP - Step 1
>> Configure the SSID and Map it to respective VLANS.. Enable Conf t Dot11 ssid one Vlan 1 Authentication open Mbssid Guest-mode End Enable Conf t Dot11 ssid two Vlan 2 authentication open authentication key-management wpa wpa-psk ascii 7 <WPA key> Mbssid Guest-mode End Enable Conf t Dot11 ssid three Vlan 3 authentication key-management wpa version 2 wpa-psk ascii 7 <WPA key> Mbssid Guest-mode End
Step 2 - Assigning the Encryption to different SSIDs with respective VLANs
Enable Int dot11 0 Mbssid ssid one ssid two ssid three encryption vlan 1 mode wep mandatory encryption vlan 1 key 1 size 40bit <10bit key> encryption vlan 2 mode ciphers tkip encryption vlan 3 mode ciphers aes-ccm
Step 3 - Configuring the sub interface for Dot11 radio 0 and Ethernet.
AP# configure terminal Enter configuration commands, one per line. End with CNTL/Z. AP(config)# interface Dot11Radio0.1 AP(config-subif)# encapsulation dot1Q 1 native AP(config-subif)#bridge group 1 AP(config-subif)# interface FastEthernet0.1 AP(config-subif)#bridge group 1 AP(config-subif)# encapsulation dot1Q 1 native AP(config-subif)# end AP# write memory AP(config)# interface Dot11Radio0.2 AP(config-subif)# encapsulation dot1Q 2 AP(config-subif)#bridge group 2 AP(config-subif)# interface FastEthernet0.2 AP(config-subif)#bridge group 2 AP(config-subif)# encapsulation dot1Q 2 AP(config-subif)# end AP# write memory AP(config)# interface Dot11Radio0.3 AP(config-subif)# encapsulation dot1Q 3 AP(config-subif)#bridge group 3 AP(config-subif)# interface FastEthernet0.3 AP(config-subif)#bridge group 3 AP(config-subif)# encapsulation dot1Q 3 AP(config-subif)# end AP# write memory AP(config)#bridge irb Ap(config)# bridge 1 route ip Ap(config)# end Ap#wr
Configuration on the Switch
en conf t int fa 2/1 switchport mode trunk switchport trunk encapsulation dot1q switchport trunk native vlan 1 switchport trunk allowed vlan 1,2,3 end
Step 4 - Verification
On the AP issue the command “show dot11 associations” and you need to see all the 3 SSIDs
ap#show dot11 associations
802.11 Client Stations on Dot11Radio0:
SSID [one] :
SSID [two] :
SSID [three] :
2. Try pinging from the AP to the Switch VLAN interface, you should be able to ping.
MANAGING THE AP WITH MANAGEMENT IP ADDRESS
This is done by assigning the IP address to the BVI interface of the AP, that is.
Enable
Conf t
Int bvi 1
Ip address <ip address> <mask>
No shut
End
Verify
Issue the command “show ip int br” on the AP and check if all the interfaces are up and running.
This is it!!
PS :
Video as well on the same
I have attached the Sample working Config from the Switch and the AP for 2 SSIDs.
