1-14 
To do…  Use the command…  Remarks 
Enable an SFTP server
 
sftp server enable 
Required 
Disabled by default.
 
 
Configuring connection idle time 
After the idle time is configured, if the server does not receive service requests from a client within a 
specified time period, it terminates the connection with the client, thus preventing a user from occupying 
the connection for a long time without performing any operation.  
Follow these steps to configure connection idle time: 
To do…  Use the command…  Remarks 
Enter system view
 
system-view 
— 
Configure the connection idle 
time for the SFTP server
 
ftp timeout time-out-value 
Optional 
10 minutes by default.
 
 
Supported SFTP client software 
A 3com switch 4200G operating as an SFTP server can interoperate with SFTP client software, 
including SSH Tectia Client v4.2.0 (SFTP), v5.0, and WINSCP.  
SFTP client software supports the following operations: logging in to a device; uploading a file; 
downloading a file; creating a directory; modify a file name or a directory name; browsing directory 
structure; and manually terminating a connection.  
For configurations on client software, see the corresponding configuration manual.  
 
 
z  Currently a 3com switch 4200G operating as an SFTP server supports the connection of only one 
SFTP user. When multiple users attempt to log in to the SFTP server or multiple connections are 
enabled on a client, only the first user can log in to the SFTP user. The subsequent connection will 
fail.  
z  When you upload a large file through WINSCP, if a file with the same name exists on the server, 
you are recommended to set the packet timeout time to over 600 seconds, thus to prevent the 
client from failing to respond to device packets due to timeout. Similarly, when you delete a large 
file from the server, you are recommended to set the client packet timeout time to over 600 
seconds. 
 
SFTP Configuration: A Switch Operating as an SFTP Client 
Basic configurations on an SFTP client 
By default a switch can operate as an SFTP client. In this case you can connect the switch to the SFTP 
server to perform SFTP-related operations (such as creating/removing a directory) by executing 
commands on the switch.