Thanks for the information Jon. Looks like the Catalyst 3750 which I have at my new site does not support GRE. I'll look into using VRF-lite. I'll let you know if I have any questions.

The Cisco Wireless WLC 4400 Series offer a wireless guest access service which includes a username and password lobby ambassador function. The WLC can be used for Wired guest access but would need to be located locally on the same broadcast network.

To add to the above it uses an EoIP tunnel rather than GRE and you would need a remote WLC in your internet DMZ

We do have a WLC 4400, but for the guest access to work properly, doesn't it have to be in the DMZ?

This link describes what you need if you go for the WLC option

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00808ed026.shtml

Basically 1 WLC at your remote site on the same broadcast domain and 1 in your internet gateway DMZ.

An EoIP tunnel which is similar to GRE is formed between the WLC's which wired guest user traffic is tunneled in.

The lobby ambassador feature is fairly simple to implement.

Thanks Mark. However I have no budget for a new WLC yet so I'm back to finding a simple solution. Since GRE tunnels are not supported on the 3750s, does any know how I can accomplish this with either VRF Lite End to End or L2TPv3?

Mark,

I was thinking, I do have WLC at my remote site and another one back at HQ. The WLC at HQ does have a trunk to the Guest network (off the firewall) which is VLAN 99. Can I use EoIP to trunk all wired and wireless network (vlan 99) back to my HQ WLC which in turn will send it to my Guest network on the firewall?

Can you send a diagram of your network

Here's the diagram Mark. Let me know if you have any questions. I'm just wonder if I use the WLC, how do I tell the switches at my remote site (1450) that VLAN 99 needs to go thru the WLC. Do I put a static route point to the WLC?

So i think if you have configured a DHCP scope on you HQ WLC and there is an EoIP tunnel between the remote and HQ WLC via your production network, guest access will work.

The Lobby Ambassador feature will be administered on the HQ WLC and guest will be allowed on the guest network once they have web authenticated.

Thanks for the suggestion Mark. Can I have the WLAN and wired guest use the same interface (VLAN 99) on the WLC? Right now I have both of them using VLAN 99 at my HQ, but only the WLAN is using the VLAN 99 on the WLC.