Configuring MikroTik DHCP Server for Devices Connected via TP-Link Wi-Fi Router.

RouterOS Beginner Basics
1

I have a MikroTik hEX RB750Gr3 router, which is connected to the internet via PPPoE on port 1. I have a TP-Link Wi-Fi router connected to port 2 of the MikroTik. The TP-Link router is successfully providing internet access.

I set up a DHCP server on the MikroTik router with the IP range 10.10.0.1/24 on port 2 and disabled the DHCP server on the TP-Link router so that devices would receive IP addresses from the MikroTik. However, when I connect a device to the Wi-Fi network, it gets stuck at “Obtaining IP Address” and then disconnects. When I re-enable the DHCP server on the TP-Link router, everything works fine and devices receive IP addresses correctly.

Here are the current WAN settings on the TP-Link router:

  • MAC Address: 20:xx:xx:xx:xx:xx


  • IP Address: 10.10.0.253 (Dynamic IP)


  • Subnet Mask: 255.255.255.0


  • Default Gateway: 10.10.0.1


  • DNS Server: 103.xx.xx.164, 8.8.8.8

How can I properly configure the DHCP server on my MikroTik router so that devices connected to the TP-Link Wi-Fi router receive IP addresses from the MikroTik?

2

I think the problem lies on the Tp-Link…
Have you set up the Tp-Link as a AP-Bridge ?
Can you share both config ?

3

Nah, I just turned off the DHCP server so it would receive from Mikrotik. I created the DHCP server from Mikrotik as normally. But no idea about TPLink.

4

Depending on your configuration there may be the need of the TP-LINK acting as a DHCP relay, there could be somewhere in the TP-LINK an option to configure and enable DHCP relay, but I believe it depends on the specific models.

If the router is (as it should) in AP mode, there are no VLANs or different subnets and the TP-LINK has DHCP server disabled, it should be “transparent” and the DHCP address request from clients should arrive to the (only) DHCP server on the network (on the Mikrotik).

But I have seen reports about some TP-Link models having “Smart DHCP” and other stuff that may interfere, in any case your issues sounds more like being on the TP-Link side.

A workaround :confused: could be to have two DHCP servers enabled, one on the Mikrotik and one on the TP-LINK, both on the same subnet, but in a different sub-range, example:
DHCP pool on Mikrotik: 10.10.0.100-10.10.0.254
DHCP pool on TP-LINK: 10.10.0.10.-10.10.0.99

5

Thank you guys, The issue has been resolved by switch to AP Mode of my TPLink Router. <3