Unreliable Ethernet and WiFi connections

I’ve been tinkering with my jetson nano since this March mainly to perform vision-based applications and I’ve noticed in the last few weeks that the Ethernet port has lost all reliability for data or SSH.
Upon bootup, the Ethernet port will work fine for a few minutes then will suddenly lose connection. I’ve noticed it will occasionally come back but the connection swiftly drops out again.
Because of this issue, I’ll ssh with WiFi but this also disconnects and reconnects quickly after. It’s annoying to deal with this issue as it makes remote login/ssh unreliable and slow.

My setup

I created a static IP address for the dev kit and have it connected straight to a switch.

  • I have confirmed the connected port is hot with data and I have swapped out functional ethernet cables.
  • Jetson nano is powered by a 5V 4A PS through the barrel connector.
  • AC8265 WiFi card has been functional for several months but I tend to rely on ethernet for the faster connection
  • Running latest JetPack and only additional software is ROS and Intel Realsense support drivers

What could be causing the issue?

Did you try any other test when this error happen?

I mean besides ssh, did you ever check the ping?
Is your board still able to ping the device when error happens?

How about other devices? Since network connection formed by at least two devices, sometimes it is the other side that gets broken, did you check that?

What is no static IP gets set? Would it still have such issue if the IP is dynamically assigned?

Please be aware that above are just for debug.