The TFTP (Trivial File Transfer Protocol) protocol works in the following way:
1. A client initiates a TFTP request by sending a Request Packet to a TFTP server.
1. The server responds with an ACK (Acknowledgement) packet to the client, indicating that it is ready to receive or send files.
1. The client sends a Datagram Packet containing the file to be transferred.
1. The server receives the Datagram Packet and responds with an ACK packet to acknowledge the receipt.
1. If the file is larger, the TFTP protocol breaks it down into smaller Datagram Packets and sends them individually. The TFTP protocol uses a sliding window technique for data transfer.
1. Once all Datagram Packets have been successfully received by the server, it sends an ACK packet to acknowledge the successful completion of the transfer.
1. If a Datagram Packet is lost or corrupted during transfer, the TFTP protocol resends the packet until it is successfully received.
1. When the transfer is complete, the server closes the connection.
TFTP is a simple and lightweight protocol designed for transferring files between systems with minimal delay and reliability requirements. It is commonly used for transferring configuration files and boot images in network devices such as routers, switches, and firewalls.
