H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 60)

52
NOTE:
•
The file name, size and path shown in the figures are for reference only and may differ from the
actualities on your switch. Before upgrading the software of your switch, check the current application
version to make sure that the correct file is used for the upgrade.
• After downloading files with a changed baud rate, timely change the baud rate back to 9,600 bps in
HyperTerminal to ensure the normal display on the terminal screen when the system boots or reboots.
• The size of a system software image file is typically over 10 MB. Even at a serial baud rate of 115,200
bps, the upgrade takes about 60 minutes. H3C recommends you to upgrade a system software image
file through an Ethernet port.
Upgrading a system software image file through an
Ethernet port by using TFTP
To upgrade a large system software image file, use the Trivial File Transfer Protocol (TFTP), which can
remarkably shorten the software maintenance time.
TFTP is a TCP/IP protocol used for file transfer between client and server. It provides a simple and
low-overhead file transfer service. TFTP provides unreliable data transfer over UDP and does not provide
any access authorization and authentication mechanism. It employs the timeout retransmission method to
implement best-effort delivery of data.
The WX3024E provides TFTP Client service. With the switch serving as the TFTP client and the file server
serving as the TFTP server, you can upload a system software image file from the switch to the file server,
or download a system software image file from the file server to the switch.
You can upgrade a system software image file by using TFTP through the BootWare menu or at the CLI.
Upgrading a system software image file by using TFTP through
the BootWare menu
Setting up an upgrade environment
Figure 48 Set up a TFTP environment
TFTP client
TFTP server
Console cable
Ethernet cable