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Error reference · MikroTik

MikroTik: pppoe-out1: terminating... - authentication failed

pppoe-out1: terminating... - authentication failed

What it means

The PPPoE server of your ISP rejected the username or password.

Why it happens

  • Typo in the login or password (case matters).
  • The ISP binds the session to a MAC address and you replaced the router.
  • An old session is still active on the ISP side.

How to fix it

  1. Re-enter user and password on the PPPoE client.
  2. Clone the old router’s MAC on ether1 or ask the ISP to reset the binding.
  3. Wait a few minutes or ask the ISP to drop the stale session.

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MikroTik config generator · MTU calculator

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