DHCP Server for Guest Network?

We have Cisco Controllers and AP for our wireless network.  We also have a seperate Guest Network VLAN with no SSID. The runs though the Controller to a seperate Router - it's Network Prosafe Router.  We have DHCP set up on the router however, the DHCP stop giving out addresses intermittently.  We have over 2000 IP's in this router however, we don't think this is a good setup considering the Guest Network keeps going down.  Sometimes we can wait it out other times we reboot the router.  My boss came up with the Idea to create a DHCP server and attach it to the guest network.  That seems simple enough in theroy but in practice I'd have create some type of domain or can this be done in a workgroup.  I don't want to have to create a guest domain and I'm not sure I can even do that because of AD. So is this even possible?
 Also, how could we handle a splash page for a guest network?
WellingtonISAsked:
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Dan CraciunIT ConsultantCommented:
I don't think it's that complicated.
If you disable DHCP on the router, the clients will get their IPs from any available server that advertises. It's the DORA principle.

Anyway, test it. Just connect a Linux/Windows box that serves IPs and disable DHCP on the router.

HTH,
Dan
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arnoldCommented:
What you can do is use an existing DHCP server by defining a new scope (guest network) and then configure an ip helper for the guest VLAN of forward the DHCP requests to the existing DHCP server/s where the guest IP scope is defined.
On the Cisco you would redirect any traffic to a splash page, after the user does what you want them to do, the connection would then be righter switched to a different VLAN, ..........
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Craig BeckCommented:
Don't usecan existing DHCP server... That will require routing from the guest network and you don't have a L3 interface on your network for the guest VLAN.

You don't need to create a domain to run DHCP.  Just install the service and configure as normal.
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WellingtonISAuthor Commented:
I would rather do a seperate DHCP server than anything on my production network. Thanks
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WellingtonISAuthor Commented:
Thanks.
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