DHCP Relay - many SSID with different VLAN

[namezys]

Hello. Maybe my understanding of the DHCP relay feature is wrong but let me try to explain what I want to get.

Current setup with general broadcast DHCP

Two SSID:

• "ssid-10" with VLAN 10
• "ssid-20" with VLAN 20

Everything is connected through a switch to MikroTik there I have a DHCP server

• VLAN 10: 10.10.0.1, pool: 10.10.x.x
• VLAN 20: 10.20.0.1, pool: 10.20.x.x

Everything works as expected:

• if I connected to "ssid-10", I would get 10.10.x.x
• if I connected to "ssid-20", I would get 10.20.x.x

DHCP Relay

I hope that I understand correctly how it should work (AP works as relay agent):

1. wireless STA sends a broadcast DHCP request
2. AP gets this broadcast request and sends a unicast request to the DHCP server that I preconfigured
   1. In other words, I have to configure different DHCP servers for each SSID: 10.10.0.1 and 10.20.0.1
3. DHCP server responses to AP
4. AP sends a response to the STA

Looks like that should work better than broadcast. However, without DHCP relay it works well so I'm just curios if it's possible to setup.

[bruno_andrade]

You don't need to set routes in the ZD. Your router (which is the gateway for your ZD) should have a route to the DHCP server. The ZD simply converts DHCP broadcast traffic into unicast and forwards it to the DHCP relay IPs using the default gateway configured in the ZD.