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WiFi PEAP/RADIUS connection issues

alexnswr34
Level 1
Level 1

Hi all,

I have a strange problem where Cisco Aironet 1702i will connect wireless RADIUS clients on 5GHz radio interface but not on 2.4GHz radio interface. This AP is running in Autonomous mode. RADIUS/EAP clients were initially able to connect to the 2.4 GHz interface but some time (a month) after deployment all RADIUS clients which are attempting to connect to the 2.4 GHz interface are unable to connect. There were no changes done on AP or the RADIUS server.

Here is IOS version that is running on this AP:
Cisco IOS Software, c1700 Software (AP3G2-K9W7-M), Version 15.3(3)JAB, RELEASE SOFTWARE (fc1)

Here is my AP config:

aaa new-model
!
!
aaa authentication login default group radius local
aaa authentication login eap_methods group radius
aaa authorization exec default group radius if-authenticated 
aaa accounting delay-start
aaa accounting exec default start-stop group radius
aaa accounting system default start-stop group radius
ip inspect WAAS flush-timeout 10


no dot11 igmp snooping-helper
dot11 syslog
dot11 vlan-name DMZ vlan 2
dot11 vlan-name INSIDE vlan 1
!
dot11 ssid Tsunami_2
   vlan DMZ
   authentication open eap eap_methods 
   authentication network-eap eap_methods 
   authentication key-management wpa version 2
   accounting eap_methods
   guest-mode
!
dot11 ssid Tsunami_5
   vlan DMZ
   authentication open eap eap_methods 
   authentication network-eap eap_methods 
   authentication key-management wpa version 2
   accounting eap_methods
   guest-mode
!
dot11 ssid Typhoon_2
   vlan INSIDE
   authentication open 
   authentication key-management wpa version 2
   wpa-psk ascii some_password_for_non_eap_clients

interface Dot11Radio0
 no ip address
 !
 encryption vlan 1 mode ciphers aes-ccm tkip 
 !
 encryption vlan 2 mode ciphers aes-ccm tkip 
 !
 ssid Tsunami_2
 !
 ssid Typhoon_2
 !
 antenna gain 0
 stbc
 station-role root
 no dot11 extension aironet
 no cdp enable
!
interface Dot11Radio0.1
 encapsulation dot1Q 1 native
 bridge-group 1
 bridge-group 1 subscriber-loop-control
 bridge-group 1 spanning-disabled
 bridge-group 1 block-unknown-source
 no bridge-group 1 source-learning
 no bridge-group 1 unicast-flooding
!
interface Dot11Radio0.2
 encapsulation dot1Q 2
 bridge-group 2
 bridge-group 2 subscriber-loop-control
 bridge-group 2 spanning-disabled
 bridge-group 2 block-unknown-source
 no bridge-group 2 source-learning
 no bridge-group 2 unicast-flooding
!

!
interface Dot11Radio1
 no ip address
 !
 encryption vlan 1 mode ciphers aes-ccm tkip 
 !
 encryption vlan 2 mode ciphers aes-ccm tkip 
 !
 ssid Tsunami_5
 !
 antenna gain 0
 traffic-metrics aggregate-report
 peakdetect
 dfs band 2 3 block
 stbc
 speed  basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15. a1ss7 a2ss7 a3ssnone
 channel dfs
 station-role root
 no dot11 extension aironet
 no cdp enable
!
interface Dot11Radio1.1
 encapsulation dot1Q 1 native
 bridge-group 1
 bridge-group 1 subscriber-loop-control
 bridge-group 1 spanning-disabled
 bridge-group 1 block-unknown-source
 no bridge-group 1 source-learning
 no bridge-group 1 unicast-flooding
!
interface Dot11Radio1.2
 encapsulation dot1Q 2
 bridge-group 2
 bridge-group 2 subscriber-loop-control
 bridge-group 2 spanning-disabled
 bridge-group 2 block-unknown-source
 no bridge-group 2 source-learning
 no bridge-group 2 unicast-flooding
!
interface GigabitEthernet0
 no ip address
 duplex auto
 speed auto
!
interface GigabitEthernet0.1
 encapsulation dot1Q 1 native
 bridge-group 1
 bridge-group 1 spanning-disabled
 no bridge-group 1 source-learning
!
interface GigabitEthernet0.2
 encapsulation dot1Q 2
 bridge-group 2
 bridge-group 2 spanning-disabled
 no bridge-group 2 source-learning
!
interface GigabitEthernet1
 no ip address
 duplex auto
 speed auto
 bridge-group 1
 bridge-group 1 spanning-disabled
 no bridge-group 1 source-learning
!
interface BVI1
 mac-address 7c0e.ceee.1333
 ip address 192.168.21.7 255.255.255.0
 ipv6 address dhcp
 ipv6 address autoconfig
 ipv6 enable
!

Non EAP clients can connect to the 2.4GHz interface on Typhoon_2 SSID without issues.

 

 

1 Reply 1

alexnswr34
Level 1
Level 1

Figured it out myself. 
Basically I have removed Typhoon_2 SSID and Both Tsunami SSIDs started to authenticate against the RADIUS just fine. Sounds like you can't have 2 SSIDs on the same RADIO interface unless you use MBSSID but with Cisco autonomous APs you can't use MBSSID...
 

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