Hello,
Thank you for your answers.
Only one computer sees the SSID "public2" and If I take my phone and I check SSID in my airspace, I don't see "public2" but I see "public". That's why it's strange for me.
When I do a show wireless wlan, I don't see "public2", and each is enabled.
Each radio deploy each wlan, so it's correct.
I could say it's an error from the Windows, but I already saw the "public2" appeared once on my iPhone.
I'm stuck.