Randomly Losing Network Connection...Where Should I Start Troubleshooting?

[ARAMP1]

This is so random, I don't know where to start troubleshooting.

I have several FreeNAS machines on my network, but I'm only having connectivity issues with this one. It happens randomly. It's only use is as a Plex machine. It may go a day or 5 and be fine and then all of a sudden I can't connect to it via web GUI, SSH, or SMB share through my windows machines.

I can also log into the IPMI, but there are no logs or anything out of the ordinary. There is nothing out of the ordinary with the console. The plex plugin still runs though and plex operates as advertised. I can still login to my plex web dashboard via app.plex.tv and its's web address. I reboot the machine and I'm back to everything working for another few days.

It's a Supermicro X10SLR-F motherboard with an E5-2676 v3 with 64GB of RAM. I just upgraded to 11.3-U4.1, but it was doing it with 11.3-U3.2.

Any help or suggestions are appreciated.

 

[c77dk]

Sounds like a challenge to figure out since networking seems to function from the machine (your Plex pass).
I would start by doing a tcpdump on the server and see if things look fine there, and maybe also on a mirror port on the switch (can be a lot of things messing up)

 

[sretalla]

The plex plugin still runs though and plex operates as advertised. I can still login to my plex web dashboard via app.plex.tv and its's web address. I reboot the machine and I'm back to everything working for another few days.

Then your network is fine... how are you connecting to it for the GUI, SMB and SSH? IP address? or by name... perhaps it's the mdns that's failing.

 

[ARAMP1]

Sounds like a challenge to figure out since networking seems to function from the machine (your Plex pass).
I would start by doing a tcpdump on the server and see if things look fine there, and maybe also on a mirror port on the switch (can be a lot of things messing up)

I was afraid it wasn't going to be something simple.

Then your network is fine... how are you connecting to it for the GUI, SMB and SSH? IP address? or by name... perhaps it's the mdns that's failing.

GUI by anything on the network (desktop, laptop, phone). SMB via desktop (transferring movies over) and SSH via Putty from the same desktop. All by local IP address.

 

[ARAMP1]

Well, I just decided to do a fresh install of FreeNAS and it's been working as advertised for almost two weeks now.