Introduction to TFTP
In this article, we will be discussing TFTP. With the involvement of the internet, two terms came forward which is client and server. These clients and servers communicate with each other over the internet. All through this communication follows certain sets of guidelines which we generally term it as Protocols. There are several protocols that need to be followed while communicating among nodes on the internet.
One such protocol is the FTP protocol. Here FTP stands for File Transfer Protocol. This protocol helps to send a file from the server on request from the client-side.
This topic which we are going to discuss viz TFTP is also one such file transfer protocol.
TFTP stands for Trivial File Transfer Protocol. We would like to tell that FTP and TFTP are not exactly the same. FTP has a lot of more features as compared to TFTP protocol
What is TFTP?
Trivial File Transfer Protocol is a simple protocol that is used for sending a file from the server to the client. Trivial File Transfer Protocol uses the concept of UDP to share files between server and client. Here UDP stands for User Datagram Protocol.
Trivial File Transfer Protocol in Detail and Understanding it
Trivial File Transfer Protocol has a very simple concept and due to its simple concept, it has a very simple design too. Although due to its simple design, it has limited features when it is compared to File Transfer Protocol. In general Trivial File Transfer Protocol does not follow any authentication before the communication of file. Trivial File Transfer Protocol does not apply any security mechanism while filing communication. Since Trivial File Transfer Protocol does not follow any authentication mechanism or any security mechanism, hence it could not be used over the internet for communication of files
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It is generally used for communicating files among machines set up in local intranet only
The most important feature of Trivial File Transfer Protocol is that it uses a very small amount of memory, Trivial File Transfer Protocol could be used to communicate boot files if computers do not have hard disks
Trivial File Transfer Protocol generally uses protocol 69 However the port used for communication could be defined by used when Trivial File Transfer Protocol is being set up
What is TFTP Used for?
Trivial File Transfer Protocol is used for communicating files between client and server within the local network. Trivial File Transfer Protocol is highly helpful when the client computer has very low memory storage devices or hard disk devices. It could be used to communicate boot files when the server is on the client’s computer. Since it is easier to implement hence it could be widely used when we have a low-security mechanism to be followed.
It does not follow any authentication mechanism, hence only those files could be communicated which does not need to have any security mechanism
How TFTP Works for?
Now, let us understand how Trivial File Transfer Protocol works. We will look at the mechanism of how does communication takes place between a client and a server.
- Since Trivial File Transfer Protocol uses UDP for communicating of files hence it establishes a connection generally by using port 69
- Once the connection is established, the client generally requests RRQ or WRQ. Here, RRQ means Read Request and WRQ stands for Write Request. A client generally request for reading request if it wants to only read the file and generated write request if wants to write a particular file which exists on the server
- Once this is done, then files are communicated in the form of small packets
- These packets are of 512 bytes. The file to be communicated is divided into small packets where each packet consists of 512 bytes
- Once a packet is communicated from server to client, the server waits to receive an acknowledgment from the client that packet has been received. Once, acknowledgment is received the server sends the next packet of 512 bytes
- This is done till the last packet is communicated from server-side to client-side
Now, let us look of few of the scenarios while communicating of data packets
What will happen if a Packet is not received on the Client Side?
When a packet is communicated from server to client, the server starts a timer. It waits until this time to receive the acknowledgment from the client-side. If the acknowledgment is not received from the client-side, then the server re-sends the same packet until its acknowledgment is received. However, if acknowledgment is received before the timer, then it sends the next packet
How will the Client know that File Communicating is Done?
The last packet which is generated for sharing a particular file is always less than 512 bytes. Even if the packets generated are in multiples of 512 bytes, then it sends an additional packet which is less than 512 bytes so that the client could understand that it has received the file.
Types of TFTP?
Generally, TFTP is of four types which are-
- Read request
- Write request
- Data Packets
- Acknowledgment request
Advantages of TFTP
- Uses UDP protocol
- Is easier to implement
- Requires less coding
- Less memory usage
Why Should We Use TFTP and Why do we Need TFTP
We could use TFTP because of the following reason-
- Since it requires less memory hence it could be used
- Since it required less coding hence it could be used easily
- It follows the concept of UDP hence could be easily implemented
- Easy to communicate file
We need TFTP because of
- Communicating of file between server and client
- No authentication makes communication of files easy
How will this Technology Help in Career Growth?
This technology is very useful to understand the basic concept of how actually communicating of files is there between server and client.
However, learning this technology alone is not enough. This technology will help us understand the basic concept we can use to understand other useful protocols.
TFTP is a very useful technology for communication of files between servers and clients. It could be easily used since it requires less coding, less memory usage and since authentication and security mechanism is not required hence it could be easily used
This has been a guide to the What is TFTP?. Here we discussed the Concept, Advantages, Working, uses, need, Types, and Understanding of TFTP. You can also go through our other Suggested Articles to learn more –