No network access after latest update

[int-tech01]

Hello,

I have a PBS server and just updated it to the latest updates via the web gui. Now, The main network interface does not come up. I logged in via the console (iDrac) and can see this over and over again.



ip a shows me this:



The NIC in question is en04.

The only thing that was done was an update and a reboot.

Any ideas? Thank you!

 

[VictorSTS]

Your nic isn't able to establish physical link with the swtich. I would swap network cable and check the switch port information and configuration. Maybe it was working half duplex before the update and after the reboot it can't link any more.

 

[int-tech01]

So I have no idea what happened. I walked away, had some dinner and a movie, came back to check on this post, and now everything is working. Could it have been something with the switch it was connected to? It is remote in a datacenter, so I was making plans in my head already about making a trip. But it's fixed without me doing anything....

 

[VictorSTS]

Ask someone in the datacenter to replace the ethernet cable and check the statistics for that switch port. Something not ok and the problem will happen again eventually.

 

[int-tech01]

Agreed. I also have extra NICs on the server, so it would probably be a good idea to hook up more cables from the "spare" NICs to the switch. I can leave them in a disconnected/down state, but could enable them via idrac if this would ever happen again.