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Error reference · MikroTik

MikroTik: pppoe-out1: terminating... - peer is not responding

pppoe-out1: terminating... - peer is not responding

What it means

The router sent PPPoE discovery or LCP echo and the ISP side did not answer.

Why it happens

  • Cable, ONT/modem or ISP outage.
  • Wrong interface or VLAN for PPPoE (some ISPs need a VLAN tag).
  • MTU/MRU mismatch on some networks.

How to fix it

  1. Check the link on ether1 and the ONT lights.
  2. Bind the PPPoE client to the right VLAN interface if the ISP uses one.
  3. Set max-mtu/max-mru to 1480 or 1492 as the ISP specifies.

Useful tools

MTU calculator · MikroTik config generator

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