This is a wierd one and keep in mind that it only happens on occasion. The setup is for a hotel and conference area.
Cisco 1841 router setup up as DHCP server to hand out IPs between 10.0.0.40 -254 (255.255.255.0 Subnet)
From Router ---> Dell 3048 switches to split to different rooms and Cisco 1121 APs.
The router, switches and AP's all have static IPs set in the 10.0.0.1-39 range
I have triple checked that all the APs are NOT setup as a DHCP servers and their "role in the network" are set as Access Points.
The issue is sometimes when guests (or even I) connect to an AP they are being assigned an IP of 10.0.0.19 (or ony one of the IPs below the routers DHCP scope) and a subnet of 255.255.255.224 !?!
Any ideas on where to begin troubleshooting this?