R3303-HP HSR6800 Routers Fundamentals Configuration Guide

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Configuring TFTP
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 receiving and transmitting. 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 .bin and .btm files.
• ASCII mode—Used to transfer text files, such as .txt, .bat, and .cfg files.
The router can operate only as a TFTP client (see Figure 45) to upload or do
wnload files.
Figure 45 TFTP application scenario
FIPS compliance
The router supports the FIPS mode that complies with NIST FIPS 140-2 requirements. Support for features,
commands, and parameters might differ in FIPS mode and non-FIPS mode. For more information about
FIPS mode, see Security Configuration Guide.
TFTP is not supported in FIPS mode.
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 router and the TFTP server can reach each other.
Using the router as a TFTP client
The router 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.
• Secure download—The new file is downloaded to memory and will not be written to the storage
medium until the whole file is obtained. A download failure does not affect the old file that has the
same name as the old file.
To avoid undesired file loss, use the secure download mode. If you use the normal download mode
because of insufficient memory, assign the new file a file name unique in the storage medium.