DHCP issues with guess network and Windows Server 2012

Hi all,

I have an Asus RT-AC66U router that has guest WiFi capabilities, but i turn the DHCP Server off because my Windows 2012 Server handles DHCP/DNS.

The problem is, with the DHCP disabled on the router, the guests can't obtain IP Addresses, and thus can't get access to the internet.

Is there a simple fix to this? Thanks in advance.
Go-BruinsAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
You can create a new scope on your DHCP server specifically for your guest wifi clients. You can give them a completely different IP scheme. WIth the new scope you will want to make sure that you specify the VLAN ID as well within the scope..

Will.
Go-BruinsAuthor Commented:
Thank you. That may be above my paygrade...

In the Guest Network tab of the Asus router, I've disabled the "Intranet Access". If I do so, doesn't it imply that creating a new scope would be pointless, as the WiFi guests can't reach the server?
Go-BruinsAuthor Commented:
For a simpleton like myself, would buying a cheapie router and setting it to AP mode solve the problem?
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Will SzymkowskiSenior Solution ArchitectCommented:
No it does not. When a client first gets on the network (if DHCP is enabled) they send out a broadcast packet to find where the DHCP server is. It will then locate your 2012 DHCP server and then that server based on the VLAN ID will send a lease to the client. At this time the client will now have an IP address and be able to communicate on the network. You just need to make sure that if you are using 2 Different VLANS for Produciton and Guest that you add a dhcp helper ip to the VLAN that the guest wifi is using.

dhcp broardcast will not go across vlans unless you use the dhcp helper address.

Will.
Will SzymkowskiSenior Solution ArchitectCommented:
For a simpleton like myself, would buying a cheapie router and setting it to AP mode solve the problem?
If you are specifically looking for something that will just act as a guest wifi then that might be another alternative.

Will.
Go-BruinsAuthor Commented:
Yes, we are simply looking to give our guests complementary WiFi only, w/o giving them any kind of access for our internal network.

It sounds like setting up a cheapie router is our simplest solution?
Will SzymkowskiSenior Solution ArchitectCommented:
Yeah I would also agree. This would also make them completely isolated from each other as well which also helps. The angle i was looking at was from more of an enterprise level solution.

Will.

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Go-BruinsAuthor Commented:
Thanks much, Will.
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