MikroTik: Problembehebung

Geändert am Do, 17 Nov, 2022 um 12:25 NACHMITTAGS

Quelle: help.mikrotik.ch & DR / Nur auf Englisch verfügbar: 




Device does not power on

Try a different compatible power supply and/or PoE injector.

Device does not boot up

Try loading backup RouterBOOT:

  • hold the reset button;
  • power on the device;
  • keep holding the reset button for 2-3 seconds after you have powered on the device. If the device boots up, then upgrade the RouterBOOT by /system routerboard upgrade

If the device fails to boot up, try the Netinstall tool to reinstall the device.

Cannot connect to the device

Try using a different port to ensure that you are not using the Default configuration’s WAN port. Make sure that the port/ethernet cable is not physically damaged.

Unable to Netinstall the device

Make sure that your setup is correct. Try putting a router or a switch between your computer and the device. More information is here.

Device reboots under load

Try a different power supply. Upgrade RouterOS to the latest Stable version. Reset RouterOS configuration to defaults /system reset-configuration.

Device reboots without any load

Upgrade device’s RouterOS to the latest Stable version. Reset RouterOS configuration to defaults /system reset-configuration.

One of Ethernet port is not linking

Try using a new Ethernet cable and PoE injector if PoE IN is used.

One of SFP/SFP+/QSFP port is not linking/low throughput

Make sure both ends of your setup are compatible.

SFP module not working

Make sure that the correct optical cable is used (single-mode/multimode).

SIM card is not recognized

Try a different SIM card and make sure that its orientation is correct. Depending on the slot type, make sure the card has clicked and fixed in place or fully inserted.

LTE does not connect

If the SIM card is recognized, make sure that you have set the correct APN. 

Digital Republic APN: APN

LTE connects, but does not let data through

Make sure that you have set the correct APN. Digital Republic APN: APN

Missing LTE interface

Make sure your device is a LTE Kit version and the modem is inserted.

LTE modem is not recognized

Install the latest RouterOS Stable version.

LED is not working

Install the latest RouterOS Stable version, applying the default configuration.

 Contact MikroTik supportsupport@mikrotik.com


Keine Internetverbindung, ungültiger APN verwendet oder die LTE-Schnittstelle empfängt eine falsche IP-Adresse.


Standardmässig verwenden MBIM-Modems den vom Netzwerk bereitgestellten APN und ignorieren den manuell eingestellten. Bei einigen SIM-Karten kann das Modem einen unerwarteten APN aus dem Netzwerk empfangen. Um dies zu beheben, verwende use-network-apn=no zum APN-Profil.

CLI-Befehle, um dies zu erreichen
/interface lte apn add apn=internet use-network-apn=no
/interface lte set lte1 apn-profiles=internet


LtAP log messages indicate, that the SIM card is not inserted:

00:05:35 lte,async lte1: sent AT+CPIN?

00:05:35 lte,async lte1: rcvd +CME ERROR: SIM not inserted


The modem does not see any SIM cards inserted:
+CME ERROR: SIM not inserted

Please check if you are using the correct SIM slot. For the modem inserted in the bottom mini-pcie slot (this is the slot where modem that comes pre-installed in an LtAP lte kit is located) you need to use either sim slot 2 or sim slot 3. 

The used sim slot needs to be selected in RouterOS.

CLI command to select the sim slot:

/system routerboard modem set sim-slot=2

weitere Links: 

Konnte dein Anliegen noch nicht gelöst werden?