CCNA Study Notes 3 --- back up and upgrade IOS

CCNA Study Notes 3 --- back up and upgrade IOS
1. Backup configuration to TFTP2, COPY from TFTP to run3, back up IOS4, and upgrade IOS5. If the upgrade fails, solution ◆ 1. Backup and Restore configuration 1, ensure that the network IP address of the router and computer (tftp Server) can be reached (direct connection, same network segment) 2. The computer runs tftp software 3, when hostname test1 is set on the vro for verification, we can see the difference between copy running-config tftp: 4. On the computer, open tftp and save the path. Find File 5 named hostname test1. On the vro, change hostname to test26, copy the backup configuration from the tftp server to the vro copy tftp: runn. You can observe that the hostname changes from test2 to test1. 2. Back up and restore IOS 1. copy flash: 1:? On the vro :? 2. Check the TFTP server. Note: When a cisco copy file to tftp cannot exceed 16 MB, use ftp to upgrade IOS: 1, copy tftp: flash: 1: IOS file name note erase flash do not press Enter not to delete the original ios ◆ update failed copy process interrupted, then restart simulation upgrade failed 1, restart to enter rommon mode? Search for the tftpdnld command --- n2, and modify the IP information of the same network segment as the server 3, tftpdnld ----- The y system automatically copies ios to flash from the server. Note that the switch can only be changed using the console line but the baud rate is 9600, leading to slow speed.