boot-system tftp://192.168.100.108/image.bin
geht nciht also weiter
Aus: [https://www.thegeekstuff.com/2011/06/upgrade-cisco-ios-image/] https://www.cisco.com/c/de_de/support/docs/switches/catalyst-3550-series-switches/41541-190.html
TLDR: USB Stick mit image → copy usbflash0:imagename.bin flash:imagename.bin