Hate to restart this conversation - but I want to make things a bit clearer.
As for hardware I do not have a core switch. I have 2600 router then goes off to 3500XL switches with Ap 1200 Ap.
The physical switch that I have has several VLANS. Vlan 1 (Native)which is basically flat for the infrastructure and users have connectivity to the lan etc. Then I introduced some broadband DSL. From the dsl/modem which also has dhcp I have that set as Vlan 100. What I want to do is to have multiple SSID so a laptop user can choose between the two different SSID for sake of argument for now I will call them INTERNAL and the Vlan 100 for dsl will be called "DSL".
My switch is vlan'd as mentioned but when i type the ssid into thte clent laptop the laptop will connect to the radio BUT it will not give it an IP address to the client. Please advise on any hints or tips. If I uploaded a config would that help?
p.s. The ethernet that is connecting to the ap is from vlan 1.