yorick

I got access back after connecting a serial cable. It's a DTECH USB to TTL Serial (3.3V) and oddly enough I had to connect white to RX and green to TX, not the other way around. Black for GND and 115,200. Just for reference should others read this. I am not sure that I actually did anything on serial other than log in, but…

Yes, I believe I did. I see all port LEDs go solid after releasing the reset button, then the activity LED under power starts flashing rapidly, then the ports eventually become active again. Tested it two more times, holding for 15 seconds each. The power LED does not turn amber. - Hold button - no change in LEDs from…

I did Method 2, isolated the switch, assigned a static IP to my laptop, and nada. Even after factory reset of the switch. Not even an ARP response. I'll get a serial cable tomorrow and shall see what that gives me.