24 Feb 2013
February 24, 2013

The Inter Netted World’s Protocol

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TCP/IP or Transmission Control Protocol/Internet Protocol is a set of rules that the network traffic or the data packets follow to communicate with each other in the whole world of Computer Networking.

Protocol literally means method or rule. The Internet Protocol is a standard method of working on it. What we generally see as some website like www.myenterprise.com or www.vtigress.com does not exist as the name itself but as a set of 4 groups of binary numbers each of 4 bytes totally 32 bytes. It’s called the IP address.

A static IP address is a number in the form of a dotted quad. A Dotted Quad represents 4 decimal numbers separated by dots like 50.123.34.3. Each of the decimal number represents the binary value of the corresponding binary byte. We generally know the internet location as Domain Name because it is an easy to remember and handle over the Dotted Quads. Sometimes we need the dot address to configure the Web Browser or get set up with the access provider.

Dotted Quad is assigned to a computer by an ISP to be its permanent address on the Internet. Computers use IP addresses to locate and talk to each other on Internet like the way people do over the telephones by using phone numbers to locate people.

When you want to visit www.myenterprise.com, your computer asks the DNS Server. Domain Name System – it’s the way internet domain names are located and translated to Internet Protocol address, Server – It’s a computer program that provides services to other computer programs and their users in the same or other computers. Specific to the web, a Web Server is the computer program that serves requested HTML pages or files. When you want to visit www.myenterprise.com to enable access to the CRM software, the specific web server will link it to the corresponding HTML/scripting pages. In short, the computer handling the requests and sending back the corresponding HTML files is called the server.

Things would be simple if every machine connected to the Internet has a unique IP address but when originally began, the computer architects could not foresee a situation where the number of users is enormous. So a Dynamic Host Configuration Protocol (DHCP) is developed to assign temporary IP address to certain systems which frequently change the network locations. This management system is called DHCP. This temporary address is called Dynamic IP. However, certain machines like server are allotted permanent numbers called Static IP address.

By requesting the DHCP computers, you receive a dynamic IP address as long as you use the Internet Service. After your session is done, the IP address gets back to the pool. Even if you immediately login, you may not be sure of being assigned the same IP address. To get back to the telephone analogy, using DHCP is like using a pager – a very old messaging technology. As long as you don’t have to receive a call, you don’t care what number you are calling from.

There are at times when you want the computers to locate yourself. May be you are using some application called CU-SeeME or VoIP to make long distance calls using IP connection. In that case, you can either request for a static IP address or use DNS service but you may have to pay additional charges.

Using DNS is like old fashioned telephone message service at your computers disposal. It is like calling the operator and saying “Hi I am on 50.153.24.2. Please forward anyone who wants to contact me to this number.” The DNS service collaborates with the DHCP computer to forward the correct address to the DHCP computer. This is the next best you can do to getting a Static IP address.

IPv6 which is also called the “IPng” (IP Next Generation), stretches the IP addresses from 32bits to 128bits and increases the number of available IP addresses significantly making it cheaper to obtain and maintain.  

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