Ipv4 & ipv6
- 1. IPV4 & IPV6 prepared By: Ali A. Obaid Ramadhan S. Ramadhan
- 2. Introduction • The Internet has run out of Internet addresses... A new technology will take its place, though. IPv4's successor is IPv6, a system that will not only offer far more numerical addresses, but will simplify address assignments and additional network security features.
- 3. Q:What is IPV4 ? • A: IPv4 stands for Internet Protocol version 4. It is the underlying technology that makes it possible for us to connect our devices to the web. Whenever a device access the Internet (whether it's a PC, Mac, smartphone or other device), it is assigned a unique, numerical IP address such as 99.48.227.227. To send data from one computer to another through the web, a data packet must be transferred across the network containing the IP addresses of both devices.
- 4. Q:What is IPV6 ? • IPv6 is the sixth revision to the Internet Protocol and the successor to IPv4. It functions similarly to IPv4 in that it provides the unique, numerical IP addresses necessary for Internet-enabled devices to communicate. However, it does sport one major difference: it utilizes 128-bit addresses. I'll explain why this is important in a moment.
- 5. Q: Why are we running out of IPv4 addresses? • IPv4 uses 32 bits for its Internet addresses.That means it can support 2^32 IP addresses in total — around 4.29 billion.That may seem like a lot, but all 4.29 billion IP addresses have now been assigned to various institutions, leading to the crisis we face today
- 6. Q: How does IPv6 solve this problem? • A: As previously stated, IPv6 utilizes 128-bit Internet addresses.Therefore, it can support 2^128 Internet addresses — 340,282,366,920,938,000,000,000,000,000,000,000,000 of them to be exact.That's a lot of addresses, so many that it requires a hexadecimal system to display the addresses. In other words, there are more than enough IPv6 addresses to keep the Internet operational for a very, very long time.
- 7. Q: why don’t we just switch ? • To make the switch, software and routers will have to be changed to support the more advanced network.This will take time and money.The first real test of the IPv6 network will come on June 8, 2011, World IPv6 Day. Google, Facebook and other prominent web companies will test drive the IPv6 network to see what it can handle and what still needs to be done to get the world switched over to the new network.