Tag: IPv6

The Future of Network Addressing – IPv6

The Future of Network Addressing – IPv6

Last time, I talked about the need for IPv6. On this installment, I will explain what is included in IPv6 and how it solves the problems from IPv4. Let’s recap:

Internet Protocol version 4 came out in 1981. To identify hosts connected at layer three, IP addresses were used. IPv4’s addressing convention allows for a little over four billion addresses (what seemed like an un-reachable number). In 2011, the world ran out of IPv4 addresses (despite efforts to stall the issue). As such a new version of Internet Protocol was created – IPv6 (further reading: yes, I know it should be IPv5).

How does IPv6 solve this addressing problem? Continue reading “The Future of Network Addressing – IPv6”

Why do we need IPv6?

Why do we need IPv6?

Yesterday, my wife asked me about IPv6. “What are the benefits?” and “How is it different from IPv4?” Rather then send her to LMGTFY, like the snarky person I am, I decided to give her the run down on IPv6. Thus I was inspired to share my thoughts about IPv6 here, with you. This week, I will discuss how the need for a new version of Internet Protocol came about.

Let’s dive right in by defining the IPv4 address exhaustion problem. Consider the following:

You are making an address system to help in sending letters. At the time you make your system, there are about 10 houses in your city. As such, you very simply label the houses A, B, C, D, etc. You have used 10 letters of the 26 letter alphabet. This works fine, but eventually, people hear about the amazing landscape in your “town” and start moving in. Within a year, you get five new neighbors. Then five more next year. You can tell, that in two more years, you are going to run out of addresses for the houses in your neighborhood! What do you do?

Continue reading “Why do we need IPv6?”