I have two Cisco 1200 APs setup on channels 1 and 6. They both have three SSIDs setup on them (same on each unit) pointing to three different VLANs. On my 104 VLAN, I have our data network and on our 105 VLAN our Cisco phone network. The 104 VLAN is setup with WPA-PSK security (open auth) and the 105 VLAN is setup with WEP. Both laptops and phones can connect to each AP and work on the network.
Here is my issue, if I walk from one end of the building to the other, I should be able to switch to the next AP seamlessly without dropping too many packets. If I keep a constant ping active on my laptop and walk to the other AP it will switch but can't seem to get a DHCP address or network connectivity again. It will eventually disconnect from the AP. After about a minute the laptop will try again and connect to the new AP and the ping will resume.