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4.0 CCNA - IP Services

4.8 TFTP/FTP Features and Configuration in an IP network

TFTP (Trivial File Transfer Protocol) and FTP (File Transfer Protocol) are two commonly used file transfer protocols in IP networks.

TFTP is a simple, lightweight file transfer protocol that has limited functionality compared to FTP. It is typically used for transferring small files between network devices, such as backups or software upgrades. However, it does not provide user authentication or encryption, making it less secure compared to FTP.

FTP, on the other hand, is a more full-featured file transfer protocol that provides user authentication, encryption, and other advanced capabilities such as data compression, directory listing, and file permissions management. It is commonly used for transferring larger files between servers and clients.

In summary, TFTP is used for simple and fast file transfers in IP networks, while FTP provides more advanced features for secure and robust file transfers.

Configuring FTP and TFTP on a Cisco IOS device:

Cisco devices, by default can be configured as FTP/TFTP clients

Router#conf t
Router(config)#ip ftp username [username]
Router(config)#ip ftp password [password]
Router(config)#end
Router#copy flash ftp
Router#copy ftp flash

Router#conf t
Router(config)#ip tftp source-interface [interface-name]
Router(config)#end
Router#copy tftp flash

In this example, the ip ftp username and ip ftp password commands are used to set up user authentication for FTP transfers. The copy flash ftp and copy ftp flash commands are used to transfer files to and from a remote FTP server.

For TFTP, the ip tftp source-interface command is used to specify the source interface to be used for TFTP transfers. The copy tftp flash command is used to transfer files to and from a remote TFTP server.

Note that the above configuration is for a client. A Cisco IOS device can be configured as both an FTP client and an TFTP client to transfer files from remote servers. In the example, the copy flash ftp and copy ftp flash commands are used to transfer files to and from a remote FTP server, and the copy tftp flash command is used to transfer files to and from a remote TFTP server.

It's important to note that a Cisco IOS device does not have the capability to act as an FTP or TFTP server by default. To allow other devices to transfer files to a Cisco IOS device, an additional application or software needs to be installed.

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