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Cisco Bug: CSCsz72416 - unexpected vlan is assigned due to failed to aaa override

Last Modified

Jun 30, 2016

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases


Description (partial)


unexpected vlan is assigned in certain roaming scenario with below network environment.

        ACS server
        WLC (enable aaa override)
    |               |
   AP0       AP1
Wireless Client

* AP1 and AP2 has same ap group vlan named  VLAN 200


steps of roaming scenario is below.

1) ACS server is set to reply aaa override with VLAN 100
   Wireless client start to connect to the AP0.
   -> VLAN  100 is asigned

2) Roam to AP1
   Wireless client move to AP1
   -> VLAN 100 is kept.

3) Change the AAA Override settings on ACS server to doesn't reply of the 
   override vlan. 

   Execute the [ ipconfig /releas ] in command prompt of wireles client.
   Immediately after that, disable the Wireless NIC (Wilress network connection)
   of wireless client.

4) enable the Wireless NIC

Expected behavior is client belongs to VLAN 200 as ap-group vlan
because Wilress client would be full authenticated and aaa override
is not reply from the ACS server.
However previous aaa override vlan ( VLAN 100 ) is asigned unexpectedly.
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