H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 514)

49-1
49
FTP and SFTP Configuration
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The term switch used throughout this document refers to a switching device in a generic sense or
the switching engine of a WX3000 series.
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The sample output information in this manual was created on the WX3024. The output information
on your device may vary.
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FTP banner is newly added. For details, see Configuring the banner for an FTP server .
Introduction to FTP and SFTP
Introduction to FTP
FTP (file transfer protocol) is commonly used in IP-based networks to transmit files. Before World Wide
Web comes into being, files are transferred through command lines, and the most popular application is
FTP. At present, although E-mail and Web are the usual methods for file transmission, FTP still has its
strongholds.
As an application layer protocol, FTP is used for file transfer between remote server and local client.
FTP uses TCP ports 20 and 21 for data transfer and control command transfer respectively. Basic FTP
operations are described in RFC 959.
FTP-based file transmission is performed in the following two modes:
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Binary mode for program file transfer
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ASCII mode for text file transfer
The device can act as an FTP client or the FTP server in FTP-employed data transmission:
Table 49-1 Roles that the device acts as in FTP
Item Description Remarks
FTP server
The device can operate as an FTP server to provide file transmission
services for FTP clients. You can log in to the device operating as an
FTP server by running an FTP client program on your PC to access
files on the FTP server.
FTP client
In this case, you need to establish a connection between your PC and
the device through a terminal emulation program or Telnet, execute
the ftp X.X.X.X command on your PC. (X.X.X.X is the IP address of an
FTP server or a host name), and enter your user name and password
in turn. The device can operate as an FTP client, through which you
can access files on the FTP server.
The prerequisite is
that a route exists
between the
device and the PC.