Laptop dropping connection when wireless

By Larbakium ·
I am using 4 Cisco APs, connected together by Wireless Controller, to a router which then connects to the broadband modem.

The users, use Win7 laptops to connect to the wireless network. Than they connect to a VPN client and stay connected all day. Not all users use the same VPN client, therefore more than 1 VPN client type is displaying the problem.

The users complain they loose connection very often. They know it because the VPN client drops connection and attempts to reconnect. This happens with all users at different times of the day.

Looks for logs on the pcs in order to find if the problem was with the VPN client or the OS dropping connection. No errors display on the VPN client neither on the wlan log (which displays connection was terminated and restarted several times but not mentioning a specific error).

Then I though it could be security level on the APs. I have disabled authentication. Problem continues. I have removed MAC filtering, make the network completely open and unsecured. Problem continues.

Then I wanted to eliminate the problem could be on the broadband line. So I connected one laptop wired to the router. NO problems occur. No drops.

This leads me to think the problem is around the APs... since security is down and problem still occur..

what else should I be looking at here?

thank you

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