Understanding IPv6 in greater details
IPv6 stands for Internet Protocol version 6. This version has at last arrived in the market lately although the protocol has already been worked on for more than a decade now since the standards and the specifications have been finalized recently.
There are still many features and aspects on which the Internet Engineering Task Force (IETF) group is working on. The internet protocol version 4 has certain drawbacks which encouraged and initiated the IETF to work towards a better version known as the Internet Protocol version 6. The working group is working on the version 6 of the protocol and is making sure that the same problems and obstacles faced by version 4 are not encountered in version 6 of the protocol.
The working committee for the new version carefully scrutinized and analyzed each and every RFC i.e., request for comments and worked on it. Standardization helps each software and hardware manufacturer, to follow the standard blueprint than developing separate versions of the protocol. A lot of effort is being put on the development of the version 6 of the internet protocol which will help the growth of the internet.
The Internet Protocol version 6 mainly solves two problems of earlier internet protocols; they are routing scalability and address depletion. Let us discuss them in details.
IP Address Space increased
IPv6 has now improvised 128 bits for addressing. This means that 2^125 different addresses will be available. The very first three bits of the address 001 are booked for Globally Routable Unicast addresses. So, the rest 125 bits are used for addresses. This facilitates and is taking the present internet trends a lot into the future. IPv6 can keep 10^28 more addresses than what IPv4 could keep.
Number of networks
IPv6 can support a lot more number of networks than IPv4. The last 64 bits are used for indicating the host ID of the system in the network by IPv6.
More Support for Addressing Hierarchy
Internet Protocol version 6 uses a new and a better format for addressing. IPv4 first used the normal and regular Internet Protocol assignment rules and then it started its assignment based on the rules of Classless Inter-Domain Routing or the CIDR.
More simplified version of Host Addressing
The format of addressing has already been explained earlier. The first four bits are used for the numbering of the network and the last four are used for the numbering of the host.
The facility of Address Auto configuration
One of the main advantages of using internet Protocol version 6 is that not only the Host ID can be determined beforehand but also the network on which it is residing can be determined.
Thus we can say that the Internet Protocol version 6 is a much better and advanced internet protocol than internet protocol version 4. Actually this can be described as the result of hard and tedious research that the researchers have put in to develop a better internet protocol for the world.
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