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Communication protocol

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The protocols they are instructions, regulations or rules that allow guiding an action or that establish certain bases for the development of a procedure. Communication , on the other hand, is a notion with multiple uses that, in general, is used to name the diffusion and reception of messages.

With these definitions, we can begin to understand the concept of communication protocol . This is the set of guidelines that allow different elements that are part of a system establish communications with each other, exchanging information.

Communication protocols institute the parameters that determine which is the semantics and what is the syntax which must be used in the communicative process in question. The rules set by the protocol also allow recovering any data They get lost in the exchange.

If we focus on the computers , the communication protocol determines how messages should circulate within a network. When the circulation of information takes place on the Internet, there are a number of specific protocols that enable the exchange.

The most important Internet communication protocols are TCP (whose acronym can be translated as Transmission Control Protocol) and IP (Internet Protocol). Your joint action (TCP / IP ) enables the link between all the computers that access the network.

POP , SMTP and HTTP are other protocols linked to Internet , which users usually use daily even if they do not notice or know how they work. These protocols allow you to browse through websites, send email, listen to music online, etc.

TCP

He Transmission Control Protocol It is, as explained above, one of the basic elements of the Internet. Its creation dates from the period between 1973 and 1974 and is awarded to engineer Vinton Gray Cerf and researcher Robert Elliot Kahn.

Among the utilities of this communication protocol is the creation of connections between various programs present in a data network to carry out a flow of information. Thanks to its application in such a case, it is guaranteed that the data arrives at destination without errors and ordered in the same way in which they were before being sent. In addition, TCP offers the possibility of recognizing each application of the rest, thanks to the use of ports .

When a communication is made through the Internet, for example, the router you simply have to take care of sending data but not monitoring them, since this is done by TCP, which is also known as transport layer , between the application and the Internet protocol (IP).

IP

This communication protocol is much better known by users Internet, although only experts know in depth what it is really about. The IP function, found in the network layer , is to allow communication in two directions, in destination or origin, so that it is possible to transmit data through a non-connection oriented protocol shipping switched packets through different physical networks that have been previously linked following the OSI standard .

The three concepts highlighted in the previous paragraph are defined below:

* non-connection oriented protocol : it is a communication between two nodes of a network in which messages can be sent without the need for approval;

* switched package : a package is information grouped so that each one contains the data and control information, which serves to specify the path that the package must follow until it reaches its destination;

* OSI standard : comes from the acronym Open System Interconnection, which in English means Open Interconnection System although it is also known as Open Systems Interconnection Model. Its creation took place in 1980 with the intention of establishing a context on which the architectures of communication between different systems.

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