Allied Telesis AT-iMG634 - R2 User's Guide Page 92

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Software update SwUpdate module
iMG/RG Software Reference Manual (System Configuration)
1-60
FIGURE 1-6 The Web Interface Firmware Update page
1.4.3 SwUpdate module
SwUpdate module is a basic FTP/TFTP client module running on the gateway that contacts periodically a pre-
defined FTP/TFTP server and retrieves from it the required software or support files.
SwUpdate can retrieve the IP address of the FTP server dynamically, resolving the FTP server name through
look-up requests to an existing DNS server, or can be configured statically accordingly to network design
implementation.
When working in the TFTP mode, SwUpdate retrieves the TFTP Server address from the value of a specific
dhcp option (option 66 ‘tftp-server-name’) passed by the external DHCP server to the gateway IP interface. It
then uses the path passed as filename string to navigate into the TFTP server.
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