Trivial File Transfer Protocol

Trivial File Transfer Protocol (TFTP) is a simple protocol that provides basic file transfer function with no user authentication.

TFTP is intended for applications that do not need the sophisticated interactions that File Transfer Protocol (FTP) provides. Together, TFTP and Bootstrap Protocol (BOOTP) provide support for clients of an iSeries™ system. They also provide support for other clients that use the TFTP and BOOTP protocols.

You can work with TFTP server properties through iSeries Navigator, the graphical user interface (GUI) for i5/OS™.

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• Configure TFTP for clients
  To allow clients to use the TFTP server, you must ensure that the QTFTP profile has authority to access the directories and files that the clients access through the TFTP server. You also need to set the TFTP server attributes to allow the desired client requests.
• Change TFTP attributes
  Use the Change TCP/IP TFTP Attributes (CHGTFTPA) command to change the TFTP server attributes.
• Server ports and client ports
  The TFTP server uses a subnet-directed broadcast address as the destination address.
• TFTP Transfer Size option
  The Transfer Size option allows the client to determine how much data is transferred on a read request (RRQ).
• TFTP Subnet Broadcast option
  Broadcast storms are a performance problem that might occur when there are large numbers of systems that boot from the network.
• Exit points for controlling TFTP server
  With the use of exit programs, the experienced programmer can create customized processing when an application is running. If the TFTP server finds a program registered to one of the exit points for the server, it calls that program using parameters that are defined by the exit point.