HELP: script to reset LTE card when internet connection is lost

RouterOS Wireless Networking
1

Is there someone that can help me to develop a script that every time the Mikrotik looses the internet connection then it reset the LTE card?

Thanks

2

Good Morning,

Question 1 : Setup
Mirkotik with Onboard LTE, which Modell?
or Mikrotik with USB LTE-Modem?
or Mirktoik with Passthough LTE form another Mikrotik ?

Question 2: Symptomes
When the Problems occurs and there isn’t a Internet connection anymore,

  • Is the Interface still Running?
  • Is there a LOG entry ?
3

I think you can find the information you look for here https://wiki.mikrotik.com/wiki/Manual:Interface/LTE

4

Thanks for the support.
This is the model: RBwAPGR-5HacD2HnD&R11e-LTE
https://mikrotik.com/product/wap_ac_lte_kit

Most probably the SIM card holder is faulty and every1 or 2 days the modem looses the Internet connection and the log days “SIM card not inserted”.
The way to solve is to power cycle or perform a LTE card switch OFF and then ON again from the web interface.

So if a script is able to trigger the when internet connection is no more available and perform a OFF\ON or a reset of the card… this will solve.

Thanks.

5

Is the SIM card correctly positioned ?
Is the SIM card in good condition ?

6

this setup run almost 1 year and half more or less and weeks ago suddenly this problem appeared.
The SIM is OK and the problem persists even swapping to a brand new SIM

7

Good Morning,

Script :
You can simply add the Code in Netwatch or
if you need more control use a scheduler-Task

/interface lte disable lte1;
:delay 5;
/interface lte enable lte1;

Extra :
If i had to diagnose the Problem i would,


Step 1:

  • Update RouterOS and Bootloader to Current-Tree
  • Upgrade LTE-Firmware

Step 2:
If the Problem persists,
I would open up the WAPac_LTE to Clean and
inspect the Board , miniPCIe slot and LTE-Card and Connection…

After a Year in the outdoors , my routers are usually filthy inside and out !
P.S: This might void your warranty!

8

If the SIM card holder is faulty, how can a reboot, as you said earlier, solve the problem ?

9

Right, sometime I solve similar problems changing PoE injector or the power source…

10

I agree with you.
What I understood is that, most probably, SIM holder’s contacts some time loose the connection so the message in the LOG is “SIM removed” even if no one touched anything and is fixed with a power off\on, a reboot or a LTE card disable\eneable

11

I dont’t think that a reboot would solve such a problem… but anyways…

But even if the sim holder is faulty, it is easy to check it… Wap has a screw at the bottom, when you remove it you can pull it and reveal the SIM holder …
https://help.mikrotik.com/docs/display/UM/wAP+R+ac

12

Not so easy to reveal the SIM holder.
You have to remove the white cover, I mean the one protecting the electronics.
Then remove the two WiFi antennas, remove some screws around, remove the LTE modem card from the miniPCI slot, remove other screws under the modem then finally you can split the electronc board from the alluminum black base.
The SIM holder is “hidden” between the electronic board and the alluminum base.

13

The SIM card holder, as far as i remember from the last time i replaced the LTE modem on a WAP, is just on the back side of the PCB… no need to remove the modem…
But if you don’t feel comfortable checking the SIM card holder, sure don’t try it…

14

I do two that scripts:
Simple watchdog: http://forum.mikrotik.com/t/sxt-lte-4g-cat6/134468/1
Advance watchdog: http://forum.mikrotik.com/t/tx-rx-fp-rx-dropped-pppoe-account/132656/1

You welcome. If you need assistance I help remotely too, ask at Telegram. For LTE stuff it’s always FREE.