H3C Technologies H3C SecBlade LB Cards - Manual (Page 105)

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Configuring TFTP
TFTP can be configured only at the CLI.
Hardware compatibility
The following matrix shows the storage media on different LB products:
Product Storage medium
L1000-A Flash
LB module CF card
Overview
Trivial File Transfer Protocol (TFTP) is a simplified version of FTP for file transfer over secure reliable
networks. TFTP uses UDP port 69 for connection establishment and data transmission. In contrast to
TCP-based FTP, TFTP requires no authentication or complex message exchanges, and is easier to deploy.
TFTP supports the following transfer modes:
• Binary mode—Used to transfer image files, such as .app, .bin, and .btm files.
• ASCII mode—Used to transfer text files, such as .txt, .bat, and .cfg files.
The device can operate only as a TFTP client (see Figure 35 ) to upload or download files.
Figure 35 TFTP application scenario
Prerequisites
Run a TFTP server program on the file host and set a TFTP working directory.
Configure IP addresses and routes to make sure the device and the TFTP server can reach each other.
Using the device as a TFTP client
The device provides the following modes for downloading a new file from a TFTP server:
• Normal download—The new file is written directly to the storage medium and overwrites the old file
that has the same name as it. If file download is interrupted, both old and new files are lost.