38
FTP
AND
SFTP C
ONFIGURATION
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:
■
Binary mode for program file transfer
■
ASCII mode for text file transfer
A 3Com Switch 4210 can operate as an FTP client or the FTP server in
FTP-employed data transmission:
Table 325
The Switch 4210 FTP Roles
Item
Description
Remarks
FTP server
An Ethernet switch can
operate as an FTP server to
provide file transmission
services for FTP clients. You
can log in to a switch
operating as an FTP server by
running an FTP client program
on your PC to access files on
the FTP server.
The prerequisite is that a
route exists between the
switch and the PC.
FTP client
In this case, you need to
establish a connection
between your PC and the
switch 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. A switch
can operate as an FTP client,
through which you can access
files on the FTP server.
Summary of Contents for 4210 PWR
Page 22: ...20 CHAPTER 1 CLI CONFIGURATION...
Page 74: ...72 CHAPTER 3 CONFIGURATION FILE MANAGEMENT...
Page 84: ...82 CHAPTER 5 VLAN CONFIGURATION...
Page 96: ...94 CHAPTER 8 IP PERFORMANCE CONFIGURATION...
Page 108: ...106 CHAPTER 9 PORT BASIC CONFIGURATION...
Page 122: ...120 CHAPTER 11 PORT ISOLATION CONFIGURATION...
Page 140: ...138 CHAPTER 13 MAC ADDRESS TABLE MANAGEMENT...
Page 234: ...232 CHAPTER 17 802 1X CONFIGURATION...
Page 246: ...244 CHAPTER 20 AAA OVERVIEW...
Page 270: ...268 CHAPTER 21 AAA CONFIGURATION...
Page 292: ...290 CHAPTER 26 DHCP BOOTP CLIENT CONFIGURATION...
Page 318: ...316 CHAPTER 29 MIRRORING CONFIGURATION...
Page 340: ...338 CHAPTER 30 CLUSTER...
Page 362: ...360 CHAPTER 33 SNMP CONFIGURATION...
Page 368: ...366 CHAPTER 34 RMON CONFIGURATION...
Page 450: ...448 CHAPTER 39 TFTP CONFIGURATION...
Page 451: ......
Page 452: ...450 CHAPTER 39 TFTP CONFIGURATION...
Page 470: ...468 CHAPTER 40 INFORMATION CENTER...
Page 496: ...494 CHAPTER 44 DEVICE MANAGEMENT...