Dear Community,
for a couple of days now I'm struggling heavily with strange issue. I've got 3 stacked switches SG500-52P, it works perfectly for couple of years, but couple of days ago I've connected tv sony to one of the ports and it started...the interface is very unstable, it goes up and down every second or even more often as visible in logs (debug level, but no more informations), so it cannot basically establish any connection (I can see packets, but TCP connections are becoming out of sync in a second (bad ack, rst, etc). I've got latest firmware 1.4.10.6. I've tried hundreds of combinations, but become slightly hopeless now, what I tried:
- when tv sony is connected to another switch (Drytek) it works perfectly (the same sockets, the same cables)
- when I tried other interfaces in the same switch result is the same (interface instability, etc.)
- what I tried forced the interface to use 10mbps speed it works! (but I need at least 100mbps)
- switch logs even on debug level shows nothing, only interface ups and downs with enormous amount
- I mirrord the port to observe traffic, but nothing special visible, dhcp works, etc, but as interface is rebooting every second TCP connections go out of sync, so effectively I don't have connectivity on tv sony
Have you faced this kind of problems? Any clue or advise where should I try to find solution, where to look??? I would be very grateful for any tip and help! Thank you.
Regards,
Rafal
