IP Address

For those of you who study Internet and Computer Communications and Networks, must be familiar with the name IP Address. IP Address is a numbering on a computer as an identity. If simplified, are like a house address name. Thus each computer has a numerical address of each - each. One to another will not be the same or unique.

IP Address that is often used is to use the base TCP / IP because it is simpler and easier to understand. While at OSI Layer itself has its own IP Address, which is of course different from the TCP / IP. But in this world that is more commonly known and used IP Address TCP / IP (Read: The History and Development of the Internet).

IP Address itself is divided into two, namely IP Address Private and Public IP Address. Private IP Address normally be obtained by the home user or small scale. The Private IP Address obtained after subnetting. Public IP Address is usually held on a large scale, such as Hosting, ISPs, data centers, and enterprise Web.

Table IPv4 with this IPv6Saat used in the world is IPv4 (IP Address Version 4), used since 1981. But since about 1990 had simulated that IPv4 will reach a saturation point or IP Address in IPv4 will be depleted. And since in 1996, IPv6 was developed as a replacement for IPv4. IPv4 uses 32 bits, the number of IPv4 addresses that are owned by at = 232 = Â ± 4 billion hosts. That means the address in IPv4 will run out when the human population has reached 4 billion more. Just imagine the number of people of India, China, Indonesia, the United States and the European Union when added together may have reached 3 billion more. Yet summed with the other residents. Certainly it will be close to 4 billion people.

To overcome this problem, IPv6 is used. Because IPv6 amounted to 128 bits, 2128, or more than 4 billion is definitely no worries about the ending IP address. Because IPv6 has a considerable number of addresses of 340, 282, 366, 920, 938, 463, 463, 374, 607, 431, 768, 211, 456.

Differences IPv4 to IPv6:

Addressing class

In the class known as IPv4 addressing, which consists of five classes: Class A, Class B, Class C, Class D and class E. Typically used by the public is in class A, B, and C, while Class D for multicast and class E for research. But sometimes there is a mention Class D and E were united.

Being in IPv6, it is not known naming these classes. But in the known types of IPv6 addressing, ie addressing Unicast, Multicast Addressing, and anycast addressing. Unicast addresses are divided into 3 parts, the Link Local Address, Address Site Local and Global Address.

routing

In IPv4, has a slower path in the routing, this is because their examination MTU header in each routing and switching. While in IPv6, the routing process becomes much simpler. With this in IPv6 routing process becomes simpler and faster.

Mobile IP

Support IPv4 to mobile, very less. Because IPv4 does not cater to a mobile. Because it often happens roaming. While on IPv6 support in the design of mobile systems in the IP. So no one IPv6 is also known as Mobile IP.

Security

To maintain security use traditional IPv4 IPsec, as its security features. But unfortunately this feature only as an additional feature. While in IPv6, IPsec by default has been used. So each process will pass IPsec first.