Trivial File Transfer Protocol
Trivial File Transfer Protocol (TFTP) is a UDP protocol used to transfer files. TFTP can read or write files from or to a remote server. On the z/OS® system, TFTP is a server you can configure with the command line option during TFTP invocation. TFTP can also be started as a procedure.
TFTP is installed in the /usr/lpp/tcpip/sbin/ directory.
The TFTP server preforks a child process to handle incoming requests when the concurrency limit is exceeded. Consequently, immediately after starting the TFTP server, two TFTP processes exist.
In case of a flood of concurrent TFTP commands, the TFTP server may fork additional processes. When the number of concurrent requests being processed drops below the concurrency limit, the number of TFTP processes is decreased back to two.