HP (Hewlett-Packard) A3100-8 DC EI ユーザーズマニュアル

ページ / 157
 
Table 10 Configuration when the device serves as the TFTP client 
Device Configuration 
Remarks 
Device (TFTP client) 
• 
Configure the IP address and routing function, and 
ensure that the route between the device and the TFTP 
server is available. 
• 
Use the tftp command to establish a connection to the 
remote TFTP server to upload/download files to/from 
the TFTP server 
— 
PC (TFTP server) 
Enable TFTP server on the PC, and configure the TFTP 
working directory. 
— 
 
Configuring the TFTP client 
When a device acts as a TFTP client, you can upload a file on the device to a TFTP server or download 
a file from the TFTP server to the local device. You can use either of the following methods to download 
a file: 
 
Normal download: The device writes the obtained file to the storage medium directly. In this way, 
if you download a remote file using a filename destination-filename that exists in the directory, the 
device deletes the original file and then saves the new one. If file download fails due to network 
disconnection or other reasons, the original system file will never recover because it has been 
deleted.  
 
Secure download: The device saves the obtained file to its memory and does not write it to the 
storage medium until the whole file is obtained. If you download a remote file using a filename 
destination-filename that exists in the directory, the original file is not overwritten. If file download 
fails due to network disconnection or other reasons, the original file still exists. This mode is more 
secure but consumes more memory. 
HP recommends that you use the secure mode or, if you use the normal mode, specify a filename not 
existing in the current directory as the target filename when downloading the system software image file 
or the startup configuration file. 
Before using the tftp command to establish a TFTP connection, you can perform source address binding. 
Source address binding means configuring an IP address on a stable interface such as a loopback 
interface, and then using this IP address as the source IP address of a TFTP connection. The source 
address binding function simplifies the configuration of ACL rules and security policies. You only need to 
specify the source or destination address argument in an ACL rule as the address to filter inbound and 
outbound packets on the device, ignoring the difference between interface IP addresses as well as the 
effect of interface statuses. 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. 
Follow these steps to configure the TFTP client: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
— 
Use an ACL to control the device’s 
access to TFTP servers 
tftp-server [ ipv6 ] acl acl-number 
Optional 
By default, no ACL is used to 
control the device’s access to 
TFTP servers. 
97