Replacing a router causes ZD1200 not to accept DHCP packets anymore?

unknown

so I have a simple site with 30 APs, cisco switch, a router, and a ZD1200. the router is pfsense - a software running on pretty much generic HW.

I wanted to replace the router device (really simple procedure, just download config from old hw and upload if back to the new one), but after the swap, the wifi clients can't receive a DHCP address (the router acts as DHCP server as well). if I plug a computer directly to the switch, IP address is assigned just fine from dhcp.

on another site, I also have similar setup, but with cisco wireless devices instead of ruckus. as a troubleshooting step, I replaced the pfsense router with the same box I used at the other site, but this time there was no issue - all worked flawlessly with the new hw.

the above would suggest the ZD or APs *somehow* block/ignore the DHCP traffic from the new router (I can see in router logs the DHCP requests are being received and responses are baing sent back). however, I can't find anything in the ZD's configuration that could be causing this.

if anyone has any ideas, i'd greatly appreciate them.

thanks in advance for any responses.

eizens_putnins

Hi,

You must have some difference in network setup, ZD is not in the path of DHCP packets at all, and APs work as L2 devices, so problem can't be with WiFi system itself. 

Please, describe you setup -- do you have single subnet, with same VLAN/subnet for APs and clients? Do your new pfsense has same IP as before?

Check if you have set client isolation on WLAN, and if yes, check that gateway/DHCP server address is whitelisted.