Device loosing connection when connected to RUT300

Teltonika Networks
1

I have the following device setup:

  1. Access router from internet provider, lets call it “Access router”
  2. RUT300 Teltonika router, connected via cable to router #1
  3. Test device, let’s call it device X, connected via cable to RUT300

And now, I connect device X to RUT 300 and test if it has internet connection. Device X has an application that is calling external servers via TCP and additionally has a ping command available. Neither is working.
Now, I switch the device X to access router, by skipping RUT300. Everything works perfectly.
After that I switch device X back to RUT300 and surprisingly it works fine as well. Both the TCP connection to servers and ping command.
But after 5-15 minutes it stops working again.
This scenario is repeatable.

The RUT300 router doesn’t have any custom configuration. It’s a device freshly out of the box. I just updated the OS to newest one: RUT30X_R_00.07.07.1.

The device X doesn’t have any special network config as well. It’s set to accept params from DHCP.

How can I figure out what might be happening here?

3

Hello,

To determine the root cause of this issue, we’ll need the troubleshoot file. Since it contains private information, we’ll handle it on a separate platform. Instructions for accessing it have been sent to the email you registered for this forum.

Best regards,

4

Hi @Marijus
Thanks a lot for reaching out!
I just filled the form and I have details problem description along with timestamps of my actions and troubleshoot file.
I’m waiting to receive information how to send it to you.

5

Hello,

I’ve reached out to you via email. Feel free to attach troubleshoot and other files when you respond to that email.

Best regards,

6

Already done.
Thanks in advance!

7

Hello,

I’ll examine the files and provide my feedback on the gathered information in this forum post.

Kind regards,

8

Just as an update.
I was in contact with Teltonika support and they advised to test the connection by adding an unmanaged switch between RUT300 and device X. It helped.
Teltonika R&D team is now looking for the reason.