They have 2 AP WAP4410N in which there are two different SSID on VLAN, the DHCP server is a switch, when connected to any network delivered the correct address but after a short time, about 2 hours, the Current transition in the computer you are renewing the IP and this time goes offline causing disconnection to different applications.
I'm considering putting the command Router (config-dhcp) # lease {days
[hours] [minutes] | infinite}, leaving infinite value.
What else could this situation happening in the network, including about 2 or 3 users online at the same tiempo.os
thanks
regards