exists a way to :

[Mocuisla82]

I ' have a problem with my ACS V4.2 and certificates

When the Primary RAdius fall down the appliance connected on Aironet disconnect and research  the certificate on the secondary Raidus Service.

It's possibile marks the appliances registered on the aironet with "clear label" without disconnect and re-dowload the certificate ?

any ideas ?

[Nicolas Darchis]

Maybe you should clarify what you mean with "aironet".

Are those IOS standalone APs ? Controller based APs ? What is the SSID configuration ? Are you doing EAP-TLS ?

[Mocuisla82]

Aironet are Cisco Ap 1140.

Yes these are standalone Ap.

I use PEAP authentication with microsoft AD and check MAC-

I have more SSID configuration on my Aironet 1140.

I must try to configure a backup for the radius. when fall down  the primary radius server

the access-point should authenticate  without to require the certificate to the secondary RADIUS