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Client SSID selection with Band Select

Hi,

We have 2 SSID's. One configured for WPA\TKIP and another configured for WPA2\AES.

All clients have both SSID's configuration deployed via group policy with the WPA2\AES SSID being given priority in the windows supplicant.

However, I am seeing that some clients will connect to AP's using the WPA\TKIP SSID even when they support WPA2\AES and are configured to use WPA2\AES SSID first.

I've been trying to understand why this might happen and I was thinking that perhaps the band select feature could be causing this for clients with only b\g\n radios. By delaying the probe response to the probe request for the WPA2\AES SSID the client then selects WPA\TKIP SSID.

Has any else seen similair behavoir?

Thanks

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4 REPLIES
Hall of Fame Super Silver

Re: Client SSID selection with Band Select

You shouldn't push both out to clients. You should push out which ever profile from GPO depending if they support WPA2 or WPA.

Band select has nothing to do with this and it has to do with the client device which makes the final decision. The only other thing in GPO you can push is the ability to choose to connect to a preferred connection.

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New Member

Client SSID selection with Band Select

Thanks Scott,

In the GPO configuration we set the WPA2\AES SSID to be preferred over the WPA\TKIP SSID. So in theory this should mean the clients that support WPA2 should always use that SSID. But sometimes they use the WPA\TKIP. This can happen when roaming between APs.So just trying to work out a reason why they might prefer WPA

Any other thoughts?

Thanks

Client SSID selection with Band Select

I have to say it sounds like a client issue. Capture 802.11 and see what is being negotiated by the client and ap.

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Client SSID selection with Band Select

 I was thinking that perhaps the band select feature could be causing this for clients with only b\g\n radios.

Bandselect is a feature to encourage dual band supported clients to join network in a/n band over b/g/n. It cannot be otherway around.

This thread explain this in detail

https://supportforums.cisco.com/thread/2163160

HTH

Rasika

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