1002 CHAPTER 81: TFTP CONFIGURATION
Before using TFTP, the administrator needs to configure IP addresses for the TFTP
client and server, and make sure that there is a route between the TFTP client and
server.
Configuring the TFTP
Client
When a device acts as a TFTP client, you can upload files on the device to a TFTP
server and download files from the TFTP server to the local device. You can use
either of the following ways to download files:
■ Normal download: The device writes the obtained files to the storage device
directly. In this way, the original system file will be overwritten and if file
download fails (for example, due to network disconnection), the device cannot
start up normally because the original system file has been deleted.
■ Secure download: The device saves the obtained files to its memory and does
not write them to the storage device until all user files are obtained. In this way,
if file download fails (for example, due to network disconnection), the device
can still start up because the original system file is not overwritten. This mode is
securer but consumes more memory.
You are recommended to use the latter mode or use a filename not existing in the
current directory as the target filename when downloading startup file or
configuration file.
Multiple routes may exist for a TFTP client to successfully access the TFTP server.
You can specify one by configuring the source address of the packets from the
TFTP client to meet the requirement of the security policy of the TFTP client. You
can configure the source address by configuring the source interface or source IP
address. The primary IP address configured on the source interface is the source
address of the transmitted packets. The source address of the transmitted packets
is selected following these rules:
■ If no source address of the TFTP client is specified, a device uses the IP address
of the interface determined by the routing protocol as the source IP address to
communicate with a TFTP server.
■ If the source address is specified with the tftp client source or tftp command,
this source address is adopted.
■ If the source address is specified with the tftp client source command and
then with the tftp command, the source address configured with the latter
one is used to communicate with a TFTP server.
The source address specified with the tftp client source command is valid for all
tftp connections and the source address specified with the tftp command is valid
only for the current tftp connection.
Follow these steps to configure the TFTP client:
To do… Use the command… Remarks
Enter system view system-view -
Reference an access control
list (ACL) to the TFTP server
tftp-server [ ipv6 ] acl
acl-number
Optional
To Next Page
Loading...
