Hello Hivemind π
i need some advice here as i am losing my mind.
I have a Fritz!Box6591 and 1Gbit/s internet. Now since yesterday my complete network is extremely unstable. IF i can get any connection, it's as fast as it should be. But connections break down within minutes.
If i let the network "rest" for a couple minutes with barely no activity, i can then access everything perfectly fine for a few minutes until everything breaks down again.
What i did:
-Deactivated my local DNS (AdGuard) on my router -Restarted (even with 15 min. of no power) EVERYTHING. Literally everything in my homenetwork.
Since it's not only the internet connection and not one specific device and not even one specific type of connection (two WiFi Devices can't properly connect between each other just as two different LAN Devices on either different Ports on the router or same router port on a switch) i don't really know what to do anymore.
Obviously my router is the only common denominator but i can't see any issues with it. It's not overheating, it's RAM & CPU usage is perfectly fine, it's not gone it powersaving mode, it doesn't throw me any errors.
I already did tracepath's to every device and there is no unexpected hop on some theoretical phantom device (if my DNS became buggy or something).
If i ping one of my servers from my PC. It says i have a latency of 1~3ms but it is obviously hanging really hard. It could have a delay of 15 seconds before the next line in ping appears but that will still claim it had a 2ms latency.
I don't know what to do anymore and where to begin. Any ideas?
EDIT: Here is quick sketch of my network
EDIT2: Found the culprit - https://lemmy.dbzer0.com/comment/324192
Okay. Can you get a stable connection if you disconnect everything and just connect one device (say a PC) to the modem-router?
If it still does not work this way, I suspect your network provider may be having issues.
Disconnecting everything is on my To-Do as others have advised aswell. Issue here is, if you look at the diagram in my OP, you'll see i have a fckton of devices connected and this will take a lot of work to do. I'll do this after work.
My network provider simply cannot be the root of the issue because as i have clearly stated, i have issues connecting locally to my devices. If i ping PC to my Plexserver that's sitting my living room, i get issues, my network provider has nothing to do with that.
Alright I assumed you have issues with outbound traffic as well. Now we are clear that the issues are local only.
lemmy.world has not propagated the edit but I have checked the diagram. Which device is your DHCP server in the network? Also do you have VLANs set up in your network?
Well technically i have outbound issues aswell, but only do to my network not functioning properly on a local level.
WiFi devices directly accessing the router and doing a speedtest show no issues.
DHCP: Is the router No VLANs
Btw i now disconnected Switch 1, where actually no traffic should go through (doesn't show that on tracepath aswell), an now my network stabilized afaik. On that switch there is my plex server and my Sonos speaker. That's it.
I have to investigate more.