(Sorry Carlos, I clicked to fast on the wrong replay button) Am 09.07.23 um 13:18 schrieb Carlos E. R.:
On 2023-07-09 13:00, Daniel Bauer wrote:
Just the same as described in my first post happened again tonight:
Suddenly (like after approx. 100 of running normal) the connections on eth0 tpo the IP's behind the switch get lost. I can ping the switch, but not the other IP's connected to that switch.
First idea: power cycle the switch.
You mean unplugging electricity and plug again after a while? I did that.
Is the switch manageable, does it have a web page for administration? Perhaps it has a log.
No, it's a powered, but unmanaged Netgear GS308PP
There is nothing in /var/log/messages (except the camera software that complains for not being able to connect with the cameras). Networkmanager shows "connected".
Disconnect-reconnect/unplugg-replug cables/rebooting/completely disconnect/reconnect PC, switch and cameras from electricity doesn't help.
Ah, then you did you power cycle the switch?
Yes
BUT: plugging the the switch to my laptop all IP's are available on the laptop immediately, then plugging back the cable to the PC they appear there as well...
Full buffer somewhere...
Strange.
I cannot explain to myself why when I connect the switch to my laptop and then back to the PC it works again immediately, but I can't re-establish eth0 connection by any other means. What does my laptop do to do the magic?
The switch resets the "history" of that connector. Wild guess out of my hat.
My laptop isn't connected to the PC in any way (no WiFi, no eth-connection), so it can't change something on the PC. To me it seems that it changes something on the switch, but what and how?
Any ideas how I can find the error? If it is the switch, try to find a firmware update for it, and apply it.
I had a very weird problem with my switch, and it was that.
I can't find anything on how to update firmware for this model. Apart I doubt it is that. The very same switch with the very same cameras, cables etc. have been working for a long time (and several months uptime) with my laptop without any problems. And still work immediately after plugging to the laptop. I just replaced the laptop with a new mini PC and since then this strange problem occurs.
...
Switches being smart means they can have bugs. This is progress.
This is a stupid switch :-) -- Daniel Bauer photographer Basel Málaga https://www.patreon.com/danielbauer https://www.daniel-bauer.com