I have just taken over several networks as part of my job. All of them are using Aruba AP-105 access points in Virtual Controller mode. There are two wireless networks on each. Wireless clients are being handed their addresses by a Windows Server performing DHCP duties.
In one building, I am getting reports (which I confirmed) that at certain times of the day, users in specific areas of the building are having extreme difficulty connecting. If they move to another area of the building, they are able to connect. While in the building this morning, I checked, and was able to see that it appears that the systems show excellent signal strength to the access points, and are even showing connected in those areas, but are not receiving their network address from the server (and thus are showing connected, but with a 169.x.x.x address).
This happens mainly in the morning; as the day goes by, things work better in the afternoon. As we are in education, I could easily see that the morning is when our students arrive and the issue begins. I have made changes to my predecessor's configuration of the network (adding static IPs to the access points, and updating to the latest firmware), but this so far has not resolved the issue.
Does anyone have any suggestions? Are there logs I can pull from the system to monitor what is happening when users are trying to connect?
P.S. Other possible notes that might be useful:
We have two wireless profiles(networks) in our setup, one for staff, and one for students. Each would be considered as having a different VLAN and DHCP scope. I can't confirm that my predecessor set this up properly, so even the most basic suggestions are helpful.