At first I didn’t know whether I should mention it or whether it might be a funny anecdote that some people would make fun of, but in the end it was a very good experience for me, even though it was a real disaster.
What hvacguy wrote here in six short sentences became an odyssey of absolute madness for me, and chance was the crowning glory.
Basically, I have been dealing with VLANs and ipfire from the very beginning. The different networks had a special appeal and I always wanted to implement it correctly. But I never had the right hardware for that. My first attempts with Ipfire were on the monster HP ProLiant DL360 Gen3, but I couldn’t realize different networks, I wasn’t able to create reasonable firewall rules that it ran smoothly, so I always hooked up APs in green.
Over time, my knowledge improved somewhat and I created VLANs in the switches to forward them across several switches without come in trouble using trunks and without causing a collision with the ipfire. The hardware becomes more modern but not as professional, the small single board computers were not yet in my focus.
Nevertheless, my APs are still connected to Green via LAN and I had activated the built-in WLAN card in the BIOS a little while ago and also a blue network that I use for a few radio-controlled sockets. Unfortunately, the number of clients on blue is very limited and I wanted to implement the solution which sounds so simple here.
But what turned out to be a fatal mistake.
Before I tested various options and also planned to replace an older POE switch with a newer one.
First of all, I had an additional orange network by simply selecting the triple configuration and simply creating a VLAN on green for orange, which didn’t cause me any problems so far.
Even when I created the bridge to create another VALN on green, everything was still ok. Getting the VLANs to work correctly was a bit trickier because it always overlapped somehow. But so far so good, expanding the network only worked up to the green interface, I couldn’t set any shares.
And so I had to leave in the evening and came back a few hours later. What I found was the worst an completest failure ever, since I work on this my glory, redundant and stablest, my oeuvre, my network. oh lord! Definitely nothing worked, no machine had internet, even the modem was in error mode. All four switches responded to zero, could not be addressed with discovery tools or otherwise. I was completely over all was locked shut off or in Error mode and my NAS is still booting. I had to get in to the deep of the error on the ipfire machine itself.
After looking at the network, i was more confused as before, so first time in my life I used ChatGPt to help me, described the problem and asked if my analysis and the suspected problem could be the cause. This was confirmed from this little annoying thing and I was able to start solving the problem.
What happened? If you remember, it was a while ago that I had a question about the WiFi card and why the driver was loaded and no other, etc. The problem was solved at the time. Only the little thing that a bridge was created here and I had then now again pulled a bridge over the blue interface and my two network cards suddenly had the same MAC address after a reboot, which paralyzed the entire network and blocked all ports.
Why also coincidence? The whole thing was caused by a power interruption, because only after booting (yes my router is configured that way) did the collision and complete failure occur.
An experience I would not want to have again anytime soon, but I took the opportunity to dismantle the server, clean everything and the new switch has also been ordered.
I learned a lot, ChatGPT i will use now more often and am already in the process of expanding the blue network again and hope i will get this rules like I wanted to use the device as it should be.
Ich wünsche allen schöne Feiertage und hoffe ich konnte ein lächeln zaubern!