MikroTik

Hi there, very new here so hopefully I'm posting this in the right place!

Having issues with our SXT-LTE6 with an EE sim. On initial setup I simply changed the APN to "everywhere" which is all EE requires to connect. It connected straight away for long enough to do a speed test which produced decent speeds (faster than I was expecting!) I quickly noticed though that without any network activity the connection would drop completely then reconnect a few seconds later. This happens constantly every 20 seconds or so unless the network is kept alive (streaming something or downloading a large file).

Upon looking at the logs I saw the following errors:
lte1: reply timeout for: AT+EEMGINFO?
lte1 link down
lte1: lte1: reply timeout for: ATE0

Then it connects again:
lte1: registered home
lte1 link up

Then 20 seconds later the same:
lte1: reply timeout for: AT+EEMGINFO?
lte1 link down
lte1: lte1: reply timeout for: ATE0

I played around with the bands (EE uses bands 3 and 20) and forced it to only use B20 and strangely enough I had a stable connection, but it's B20 so speeds were significantly cut. It doesn't seem to like using both at a time.

Any help with this would be hugely appreciated!

RouterOS is latest version: v6.48.2 (stable)
I also updated firmware to latest version: R11e-LTE6_V027 I saw some other users reported updating to this version fixed similar problems but unfortunately not for me :(

Curious if other EE users are facing a similar problem? Strange how when CA band 3 drops it's causing the connection to drop completely, like the modem is resetting..

I am seeing exactly the same problems SXT LTE6 (EE UK). Initially upgrading firmware to V27 seeming to make it stable but recently the problem is back. I'm at a loss - any advice?

I am seeing exactly the same problems SXT LTE6 (EE UK). Initially upgrading firmware to V27 seeming to make it stable but recently the problem is back. I'm at a loss - any advice?

Best thing to do is get in touch with Mikrotik support. After diagnosing the issue they sent through a release candidate firmware v28 which fixed the issue right away.

You'll need to supply them with a supout.rif file. This can be done with the following steps:

Enable LTE debug logging from command line:
Then follow instructions here to generate supout.rif (make sure you do this after you have rebooted the modem and encountered the issue):
https://wiki.mikrotik.com/wiki/Manual:S ... utput_File

Hope you get it sorted!

I am having exactly the same issue, same network. Having ~300 Links downs per 24h after being stable for weeks (wonder if its related to hot weather).

I have RouterOS 6.47.10 from the long-term channel
and upgraded RouterBoard firmware to 6.47.10

I just figured out the V27 you are referring to here is LTE firmware which is another to update. I was on V25 and will now be on V27 and see if the problem continues.

If v28 does fix it for others please report back here!

I suggest additional add this Watch LTE parameters: viewtopic.php?f=7&t=155945&p=821262#p821047
It's help detect changes.

Aditional with simple netwatch who count online/offine periods Simple watchdog: viewtopic.php?f=7&t=153622&hilit=watchdog#p767767

Hi All

hopefully it helps.

i have a LGH lte6 antenna i had exactly the same issue with EE data only plan dropping and unstable.
mikrotik support provided me with v028 r11e-lte6 firmware and the connection is stable and 0 drop outs for 48 hours.

hopefully thats the fix.

regards

Maciej

r11e-lte6_028 is stable in my opinion.
with ros7.1beta7 I have a flapping lte1.. but ros7.1rc2 fix this. Any bad logs... .

The R11e-LTE6_V028 is now public available

Is it possible to download and update the firmware manually?

I'm having the same issue with connection dropping in and out (EE UK) every few seconds on a SXT LTE6, so unable to update the firmware using terminal.

Currently running R11e-LTE6 v025

I'm seeing this issue again with v33 firmware and can't find a copy of the v28 firmware to load back onto the modem. Anyone able to help?

I'm seeing this issue again with v33 firmware and can't find a copy of the v28 firmware to load back onto the modem. Anyone able to help?

Hello Timmay2,

I have added some detail on my experience of the same errors on the General Forum but here is a precis:

Only had the kit installed for a day when the lte1 link died and refused to come back. Suppliers diagnosed a sim problem and we had a replacement sim (from EE - I wonder if that is significant!) the next day and I installed it. It came up ok and was stable for hours in the evening. I noticed some dropouts yesterday - 24 in total. However, that figure has increased to 437 overnight. There is one mention of a SIM failure in the log - which I have increased to 5000 lines until we can nail this problem.

It did produce this sequence once this morning:
and two occurrences of the reply timeout:
There are long sequences like this:

I am awaiting for a call back from the suppliers but I wonder how many end-users would notice the multiple failures if they occur overnight and come back up.

I am considering setting up a persistent and big log to disk specifically for the LTE output.

Although new to LTE and similar technologies I used to program modems in a previous life so know my way around the syntax.

If I find anything new I shall pass it on.

r11e-lte6_028 is stable in my opinion.
with ros7.1beta7 I have a flapping lte1.. but ros7.1rc2 fix this. Any bad logs... .

Thank you, SiB. My version of the modem is R11e-LTE6_v025. Should I update it?