We have a building with four 1h582-51 switches stacked, going back to one of our 3 routers on our network. Recently, all ports on the 4th floor, with the same VLAN stopped getting IP addresses. They'd hang, and get a 169.x.x.x. The VLAN was egressed on the individual ports, on the gateway, and on the router. When we moved those ports to the 3rd or 5th floors VLAN, they got full connectivity.
However, none of the users on that floor are able to get personal wireless routers to function. We've seen multiple routers (configured correctly, and working in other buildings) have this same problem. Any direction to even look for a solution is appreciated