RUT200 DHCP Relay Configuration

NETWORKING SOLUTIONS
1

Hi.

I need guidance on configuring DHCP Relay.
I have two RUT200 devices:

  • The first RUT200 has LAN1 = 10.250.250.1 and acts as a DHCP Server.
  • The second RUT200 has LAN1 = 10.250.250.2 and is set as a DHCP Relay.

I followed the instructions from https://wiki.teltonika-networks.com/view/DHCP_Relay_configuration_example, but it’s still not working. Where should I start the configuration?

3

Hello,

It looks like both devices are on the same network. Could you clarify why you need a DHCP relay in this setup?

If possible, could you provide a network topology diagram with IP addresses and marked interfaces/ports? This would help us better understand your setup.

Kind Regards,

4

I don’t want the second RUT200 to distribute DHCP; I want it to receive DHCP from the first RUT200. Additionally, I want to be able to access and configure both devices at the same time.

For DHCP Relay, it should not be on the same network, right?

Here is the network topology diagram.

image
image760×428 22.7 KB

5

@Tent Hello,

In this case, you can simply configure your WAN port as LAN and disable DHCP server on your first RUT (10.250.250.2).

Navigate to Network → WAN → Edit WAN interface → Physical settings tab and select --no interface-- as the interface. Save & Apply.

Disable WAN interface in Network → WAN.

Navigate to Network → LAN → Edit LAN interface:

  • In General tab for LAN, disable DHCPv4 (this disables DHCP server).
  • In Physical Settings tab for LAN, add eth1 to the list of interfaces. Ensure Bridge interfaces toggle is enabled. This way, both ports will be LAN ports.

In Network → DHCP → Server settings, ensure that DHCP server is not running on LAN.

Let me know how it goes!

Kind Regards,

6

@AndzejJ Thank you very much for your help.

If I change from 10.250.250.2 to another network, such as 10.250.100.1, do I need to configure anything additional?

7

@Tent Hi,

With the instructions I provided above, it should work when both RUT devices are in the same (10.250.250.x/24) network.

Kind Regards,