Hi
I have a SXT LTE.
The lte interface of router has removed.
sometime be correct by reboot,but sometime had to install lte package.
why?
router os version is 6.38.7 bugfix
you must install lte package
I have the same issue with the LTE interface disappearing … it happens under high load (maxing the LTE connection) and I can recreate it all the time.
Its a real PITA.
install package is not good idea.because every day I have to install LTE package again.
I had 30cuncurent User. not more
This issue is fixed in 6.39 and newer (current and RC branches)
tanks normis.
Do you mean the issue with the interface dropping under high load or ?
I am on latest build and can still reproduce this everytime 
https://www.dropbox.com/s/87s3p9pl2y7lm7f/2017-07-19_10-14-46.mp4?dl=0
Yes, it looks like the specific issue sometimes happens on this particular product, we are looking into it. It looks like other LTE modems and wAP LTE does not have this issue. The problem on SXT LTE takes place under heavy UDP traffic, but we are still investigating.
Is there something I can do to assist ? I’ve sold / implemented maybe 10 of these now as we are pretty rural and its our only option. The problem happens on all of the devices, in a small home environment its not so bad, but I have some larger customers also who are starting to get upset with the stability problems this is causing.
Nik
Initial suspicion is that this is a problem in the driver, so we are working with the chipset manufacturer to investigate. It seems that if you need a quick fix, the wAP LTE or some other hardware replacement (we have several devices that support miniPCIe LTE modems) is the quickest fix for the important locations. Testing department says that no other LTE device (that we make/sell) has this issue in RouterOS.
Thanks for the reply, I’m afraid the cost of revisiting the sites and getting up on the roofs to replace kit would make this a loss for me so I will have to wait for the fix.
Just an idea, maybe rate-limiting UDP you can alleviate the issue in the meanwhile…
Same problem at 6.38.7 (bug fix only).
I tried install 6.40.1, but lte interface didn’t appear. Any ideas about optimal version of RoS or fix this problem?
+1 for an update on this please.
A little bit help dns flood block, since Interface has not yet down.
/ip firewall raw
add action=add-src-to-address-list address-list="dns flood" address-list-timeout=1d chain=\prerouting dst-port=53 in-interface=lte1 protocol=udp
/ip firewall filter
add action=drop chain=input dst-port=53 in-interface=lte1 protocol=udp src-address-list="dns flood"
Hello,
Im on my third SXT LTE (exchanged two times within warranty), and it does not hang up or loose the lte interface anymore (even on high loads 50+ Mbit/s for hours). In my SXT Lte’s I always used the latest ROS release candidate and Routerboard fw version.
So, in my opinion, it is worth replacing the device within warranty.
The only complaint i have now- latency. My phone (LTE), laptop(LTE) ping in speedtest shows about 15ms. SXT LTE which is outside the building, with better signal conditions has never shown me better ping than 19ms (on all three SXT LTE’s i had). I hope the UDP flood problem, @Normis is talking about, is somehow releated to this.
Good luck,
Resnais
Hallo!
I’ve got 17 of sxt lte devices in the field, and would love to have a short term solution to this issue.
Is it possible to have the below IF statement within “netwatch”? Need a bit of help with the coding if possible.
Netwatch: action if link is down -
IF LTE is not on/‘showing under interfaces’ [#Check if LTE is under interfaces]
/reboot
ELSE
/disable LTE1
:delay 5s
/enable LTE1 [#to try and reset LTE connection]
Thanks in advance!
Hi
Considering a purchase and wondering if this is still an issue?
Hi Mikrotik
Any news on the above issue. I have about 40 installed, and this issue happens on around 15 of the 40, almost daily.
All on the latest firmware.
Please help. I have looked into getting a wapLTe device but there is no stock in South Africa it seems for a month.
Hi, I am seeing the same issue. Has anyone else had thus issue, i have installed the newest upgrade to the software but no joy.