SSID WPA/WPA2 PSK Issues

[scottsassin]

I have a customer who is having issues with one SSID.  He claims that when he changes the PreShared Key, clients that had previously had the old key can connect, and new clients can connect with the new key. 

When the PSK is chaned in the Layer2 section of Security of the WLAN, is the previous key deleted?

[Scott Fella]

Yes it is deleted. Maybe they have two WLC's and the change was made to one in which some AP's are in one and the others are one the other WLC.

Sent from Cisco Technical Support iPhone App

[scottsassin]

I have already verified that the customer has done it on both WLC's. 

[Leo Laohoo]

clients that had previously had the old key can connect

This is my understanding:

Let say I have PSK "abcdef" and I am able to authenticate and get into the internet.  While I'm connected, let's say some changes the PSK to "asdfed".  So when the key changes, and as long as I am still connected, I don't get kicked out.  This is probably what your customer is looking at.

If I log off and log back in, I won't be able to get back in.