How Eth interface for DSL upstream access in PPPoE setup ?

RouterOS General
1

Hello,

I’ve got the following setup:
Internet — ISP — DSL Modem — Mikrotik router — LAN

How can I configure WAN ethernet interface for both:

  • acting as PPPoE client as required by ISP
  • acting as DHCP client to configure DSL Modem

What are the basic steps for this ?

Best regards

2

You just attach both an /ip dhcp-client row and an /interface pppoe-client row to the same Ethernet interface.

If you have the default firewall rules in place, make only the PPPoE interface a member of /interface list named WAN. The ethernet interface itself should not be on this list.

But it depends on your DSL modem whether it acts as a DHCP server also when set to bridge mode (bridge mode is required to run the PPPoE client on the Mikrotik), many modems don’t. If yours doesn’t, you have to attach a static IP configuration to the ethernet interface at the Mikrotik side.