Loading IOS on a WS-C3850 Switch

• Connect to the serial console
• Connect the Mgmt interface to your network
• Configure the Mgmt network interface (that's GigabitEthernet 0/0)
• Test connectivity:
  • ping vrf Mgmt-intf 192.168.1.11 or
  • ping vrf Mgmt-vrf 192.168.1.11
• Set Mgmt interface as interface to use for TFTP transfer:
  • conf t
  • ip tftp source-interface gigabitEthernet 0/0
  • exit
• Copy the .bin file to flash: via TFTP
  • copy tftp: flash:
• Install the .bin file using this command:
  • software install file flash:cat3k_caa-universalk9.SPA.03.07.01.E.152-3.E1.bin
  • Answer yes when asked if you want to relaod the switch
  • Answer no when asked if you want to save the configuration