Now I try download/install new image on Summit x350-24t by following
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-Use-the-Boot-Rom-Menu-to-Download-a...
AFTER
BootRom> configip ipaddress 192.168.1.155/255.255.255.0 gateway 192.168.1.3
NOTICE: No network interface available, rc=-1
ioctl (SIOCAIFADDR:) File exists BootRom>
And now Q: What physical port I need to use for download image (connect to tftp)?
All my 24 Ethernet ports are without any activity (leds is off).
When I plug cable in management port (I never use it - fully newbie about it), It has activity, but from BootRom I can NOT ping GW or tftp server on this subnet.
What You suggest for me to do next?