Multiple authentications for a client
Multiple authentications for a client is a network security feature that
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enables both Layer 2 (L2) and Layer 3 (L3) authentication for wireless client devices
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enhances security by requiring clients to complete multiple types of authentication before connecting, and
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applies only to regular client devices joining a wireless network.
 
Additional information
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You can enable both L2 and L3 authentication for a given SSID.
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Multiple authentications feature is not supported for guest or specialized client types.
 
Supported combination of authentications for a client
The Multiple Authentications for a Client feature supports multiple combination of authentications for a given client configured in the WLAN profile.
The Multiple Authentications for a Client feature supports multiple combinations of authentications for clients configured in the WLAN profile.
The table outlines the supported combinations of authentications for clients.
| 
                                          
                                           Layer 2  | 
                                       
                                       
                                          
                                           Layer 3  | 
                                       
                                       
                                          
                                           Supported  | 
                                       
                                    
|---|---|---|
| 
                                          
                                           MAB  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           MAB  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           MAB + PSK  | 
                                       
                                       
                                          
                                           -  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           MAB + 802.1X  | 
                                       
                                       
                                          
                                           -  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           MAB Failure  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           802.1X  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           802.1X  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           PSK  | 
                                       
                                       
                                          
                                           -  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           PSK  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           PSK  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           iPSK  | 
                                       
                                       
                                          
                                           -  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           iPSK  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           iPSK + MAB  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           Yes  | 
                                       
                                    
| 
                                          
                                           iPSK  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           No  | 
                                       
                                    
| 
                                          
                                           MAB Failure + PSK  | 
                                       
                                       
                                          
                                           LWA  | 
                                       
                                       
                                          
                                           No  | 
                                       
                                    
| 
                                          
                                           MAB Failure + PSK  | 
                                       
                                       
                                          
                                           CWA  | 
                                       
                                       
                                          
                                           No  | 
                                       
                                    
Unsupported combinations
The table outlines the combination of authentications on MAC failure that are not supported on a given client:
| 
                                          
                                           Authentication Types  | 
                                       
                                       
                                          
                                           Foreign  | 
                                       
                                       
                                          
                                           Anchor  | 
                                       
                                       
                                          
                                           Supported  | 
                                       
                                    
|---|---|---|---|
| 
                                          
                                           WPA3-OWE+LWA  | 
                                       
                                       
                                          
                                           Cisco AireOS  | 
                                       
                                       
                                          
                                           Cisco Catalyst 9800 Controller  | 
                                       
                                       
                                          
                                           No  | 
                                       
                                    
| 
                                          
                                           WPA3-SAE+LWA  | 
                                       
                                       
                                          
                                           Cisco AireOS  | 
                                       
                                       
                                          
                                           Cisco Catalyst 9800 Controller  | 
                                       
                                       
                                          
                                           No  | 
                                       
                                    
Jumbo frame support for RADIUS packets
RADIUS packets are fragmented according to the MTU of the egress interface when you meet all of these conditions.
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The command ip radius source-interface is configured under the relevant AAA group server radius group to point to the egress interface.
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The ip mtu NNN command is configured on the egress interface.
 
![]() Note  | 
                                    
                                        If you set the MTU of the source interface to less than 1500 bytes, additional fragmentation can occur. This may cause packet drops by upstream devices, such as firewalls and load balancers. Authentication failures may result. Verify these configurations during upgrades to prevent these issues. \ | 
                                 

                                          
                                       
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