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The Graveyard - Products No Longer Supported => Access Points / Extenders => DAP-1522 => Topic started by: kgeo on April 07, 2014, 12:49:10 AM

Title: suppress/override dhcp
Post by: kgeo on April 07, 2014, 12:49:10 AM
I have installed a DAP-1522 as an access point in our network. The network is peculiar. It is basically a static IP network. However, for historical reasons there is a DHCP server configuring a few servers, without giving them internet access.

Clients attaching to wireless, get their settings from this old DHCP server, wether or not DHCP is set on the AP. I tried to use the app Wifi Static to give a static IP, but that seems to get overridden by the old DHCP server.

One thing I could think of would be to install a firewall between the AP and the network and filter DHCP requests comig from the AP. but that would be cumbersome, and I don't have the hardware necessary.

Another possibility, maybe more realistic is to run the AP as a real router with it's own subnet for all wireless, or even as a NAT with it's separate address space for all wireless.

I have the feeling I am asking something impossible.

Thanks in advance.
Title: Re: suppress/override dhcp
Post by: FurryNutz on April 07, 2014, 07:26:33 AM
I presume if your using the DAP in AP mode and not disabling the on board DHCP server on the DAP, that it will act like a pass thru for any DHCP traffic coming from this other DHCP server. I believe in order to have the clients not get any DHCP traffic assignment from this other DHCP server, you'll need to set up the DHCP server on the DAP and let it handle handing out addresses on a sub net.
Title: Re: suppress/override dhcp
Post by: kgeo on April 07, 2014, 09:22:19 AM
Thanks for the quick answer.

Well, that is what I thought. Turning the DAP DHCP server on, however, does not guarantee that wireless clients get the DAP settings. in fact that never happened with my trials, they always get the old network dhcp servers settings handed out. On the contrary after letting the DAP run overnight, it had given IPs to three fixed computers in the network.

I also thought turning the DAP DHCP on, would make the wireless clients use that one with preference. Doesn't happen like this, unfortunately.

Any other ideas?
Title: Re: suppress/override dhcp
Post by: FurryNutz on April 07, 2014, 09:37:28 AM
I presume the wireless clients might depend on how they are connecting as well. Is this the only wireless AP on this network?

Ensure each device it set up for automatic IP addressing. Release any reservations that you may have on the main DHCP server and test. If clients are connected to the DAP and the server is ON on the DAP, they should always get and IP address from the DAP.