What is Internet Protocol (hereinafter "IP")?
Common Rules IP is the common communication protocol for all devices connected to the Internet.
- Coverage: As IP is used by all manufacturers in the world, communication can take place worldwide through the Internet.
- Communication means: Any type of physical line can be used (telephone line, wired/ wireless LAN, optical fiber, communication satellite etc.).
- Communication content: Anything replaceable with a binary zero or one.
By sharing IP as a common technology platform, anyone can use the Internet to communicate regardless of means or content of the communication.
IP has versions.
We have mainly used IPv4 (version 4).
- It is old but stable technology developed more than 20 years ago.
- IPv4 structure is simple and versatile. However, it did not take into account the rapid expansion and wide variety of Internet usage we see today.
Issues for IPv4
Number of IP addresses is small.IP address is a number that is assigned uniquely to identify each host terminal when communicating using IP.
There are only 4.3 billion IP addresses.
The number of IP address is less than the world population (7 billion); With many individuals currently using more than one IP address, and expectations for the continued widespread expansion of the Internet, in is estimated that we will run out of IP addresses some time in 2011.
The current scale and usage of the Internet was not foreseen at the time of IPv4 development. To meet the current needs, we need to add new functions. This adds complexity to the network and and causes difficulties in service provision.
To save network addresses, technologies to create sub-networks within the main network have been developed. This has brought about an increased complexity in networks together with difficulties and we face difficulties in application usage etc.
This has created a situation in which operation is difficult for network administrators and set-up is hard for users.
Features of IPv6
Almost unlimited number of IP addresses
About 34 cillion addresses (biquadratic of 4.3 billion) are ready to use.
Functions not introduced in IPv4 (and seen as necessary now) are included as standard features.
Security and identification: IPsec technology prevents impersonation and defacing of data.
Bandwidth control: capacity of transmission can be controlled by the sender.
Multicast: enabling the simultaneous sending of information to multiple hosts.
:: We can use the Internet more easily, safely and naturally.
:: It is expected to start new convenient services, making current services more useful and cheaper, by connecting not only PCs and cellular phones but other information devices which have not been connected to the Internet before.
IPv6 is the technology to realize the Internet as a social infrastructure
The Internet is essential for the information society era.Many people have already recognized the Internet as an essential social infrastructure.
We have come to use the Internet naturally as a part of our work and daily life.
We will use the Internet more widely and variously.
Until now we have regarded the Internet as a means of communication.
We will expand the means of usage of the Internet into non-communication area such as control system networks.
We need to develop a basic infrastructure to utilize the Internet in our daily life widely, simply and safely.
The possibility of developing the Internet well beyond usage as just a communication tool is very real.
We need to develop the Internet as a "simple and safe" infrastructure available "anytime, to anyone, anywhere".
IPv6 is expected to enable the Internet to further expand into its role as a social infrastructure.
- An almost unlimited number of IP addresses will allow the use of the Internet for an increasingly large number of devices within our daily living space.
- Users do not need to worry too much about security, as IPv6 provides assurance for security.
- QoS and auto-configuration features allow the development of a variety of new business models and service provisions.
- IPv6 has been designed for a huge scale, global network from its outset. More effective use of network resources, reduction in operation and administration costs and a secure, simple, low cost user experience can be realized.