Business & Networking

Same with backup or restore configuration, if we want to upgrade or downgrade IOS Cisco we must have TFTP Server, step by step to upgrade or downgrade IOS Cisco is:

1      Configuration in the PC as TFTP server

• Extract  file tftpd32e.zip then call tftpd32.exe
• Make sure the  IOS in Base Directory TFTP server exam: d:\tftp
• make sure PC TFTP server can ping to the router

2       Configuration in the Router

• make sure  router can ping to PC TFTP server
• type command # sh run, do not  set # boot system flash <ios>, if there this command delete with command #no boot system flash <ios>
• type command # tftp-server flash:<ios>

3       How to backup IOS

• Type command # copy flash tftp
• Entry the full name file IOS
• Type The address from TFTP server
• file ios saved in directory base directory exam d:\tftp

4       Cara Upgrade

• type command # copy tftp flash
• Enter to confirm
• Entry IP Address TFTP server
• Entry the name of ISO don’t forget to give .bin in the last name of file
• Router delete the old IOS (if the flash is not enough) and entry the new IOS

If finish router must reboot.