It is always a good idea to have a backup copy of the configuration of your IOS device. IOS configurations are usually copied to a TFTP server using the copy command. You can backup both the startup configuration and the running configuration of your device. The copy command accepts two parameters: the first parameter is the from location, and the second it the to location.
TFTP is a client-server network protocol used to send and receive files. To backup files to a TFTP server, you will have to set it up first. You can use Packet Tracer to do so; just add a Server to your topology, assign it an IP address and enable the TFTP service:
To backup the running configuration to a TFTP server, you can use the copy running-config tftp: command:
R1#copy running-config tftp: Address or name of remote host ? 192.168.0.10 Destination filename [R1-confg]? Writing running-config...!! [OK - 561 bytes] 561 bytes copied in 0.001 secs (561000 bytes/sec)
Remember, the first parameter after the copy keyword is the from location, while the second one is the to location. In our case, the from location is the current running-config, and the to location is the remote TFTP server.
To restore the configuration, just switch the order of the parameters – copy tftp startup-config:
R1#copy tftp: running-config Address or name of remote host ? 192.168.0.10 Source filename ? R1-confg Destination filename [running-config]? Accessing tftp://192.168.0.10/R1-confg... Loading R1-confg from 192.168.0.10: ! [OK - 561 bytes] 561 bytes copied in 0 secs
Notice that we had to specify the filename, along with the IP address of the TFTP server.
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