Tutorial: IPv6 Tunnels Part 2 - Automatic 6to4 Tunnels

In our previous article on IPv6 tunnels, we looked at manual GRE and IPv6IP Tunnels in order to provide connectivity for IPv6 networks segregated by an IPv4 network. By tunneling IPv6 over IP, we can migrate our internal networks to IPv6 and still have communication between these networks, even though we are seperated by an IPv4 network. In this article we will be using another method to provide connectivity for IPv6 networks segregated by an IPv4 network: The Automatic 6to4 Tunnel! Mastering IPv6 is not only an important part of a CCIE candidates journey, but will become increasingly important as the global pool of IPv4 addresses diminishes….

Blog: 17 days to go….

I spent this morning going through Mock Lab 6 again. I booked a 6 hour lab session and gave myself a challenge of completing the whole thing in those 6 hours. I just managed to do it (with a few minutes to spare!). I had spent the greater part of Thursday and Friday going through it thoroughly, analyzing it, trying out different things and multiple solutions. I figured out a couple of things that I stuffed up the first time.

Repeating labs definitely helps. I tend to do a lab now repeatedly until I know it back to front. A lot of people have said “what is the point of doing a lab over and over again, you just end up memorizing it”. This is true in some respects, but what I tend to do is go through the lab again until I don’t need to look up the answers for that lab.

Tutorial: IPv6 Tunnels Part 1 - Manual GRE & IPv6IP Tunnels

Lets face it, sooner or later we are going to move to IPv6. Probably closer to the sooner side than some of us are comfortable with. In this series of articles we will be introducing tunnels and taking a look at how they can be used as part of you migration towards IPv6. Working with IPv6 tunnels is also an important part of a CCIE candidate’s journey, so mastering them is important. In this article we will be looking at tunnelling IPv6 over IPv4 using manual tunnels specifically using GRE and IPv6 in IPv4.