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The Hybrid Cloud Multiverse (IPv6 VLANS)

Using IPv6 for hybrid cloud computing

Christofer Hoff has proposed an interesting idea earlier today. He asked, "How many of the cloud providers (IaaS, PaaS) support IPv6 natively or support tunneling without breaking things like NAT and firewalls? As part of all this Infrastructure 2.0 chewy goodness, from a networking (and security) perspective, it's pretty important."

His post actual was a kind of epiphany which lead me to think that one of the great things about cloud computing is in its ability to virtualize everything. The cloud is a kind of "multiverse" where the rules of nature can continually be rewritten using quarantined virtual worlds within other virtual worlds (aka virtualization). The need for a traditional physical piece of hardware is no longer a requirement or necessary.



For example VLANs don't need to differentiate between IPv4 and IPv6; the deployment is just dual-stack, as Ethernet is without VLANs. So why not just use modern VLAN technology to "overlay" IPv6 links onto existing IPv4 links? This can be achieved without needing any changes to the IPv4 configuration and allows for seamless and secure cloud networking while also allowing for all the wonders that IPv6 brings. It's in a sense the best of both worlds, the old with the new.

A VLAN based IPv6 overlay offers several interesting aspects such network security that is directly integrated into the design of the IPv6 architecture. (Security being one of the biggest limitations to broader cloud adoption) IPv6 also implements a feature that simplifies aspects of address assignment (stateless address autoconfiguration) and network renumbering (prefix and router announcements) when changing Internet connectivity providers. It's almost like the designers of IPv6 envisioned the hybrid cloud model.

Thanks for the inspiration Hoff, looking forward to trying this out.

More Stories By Reuven Cohen

An instigator, part time provocateur, bootstrapper, amateur cloud lexicographer, and purveyor of random thoughts, 140 characters at a time.

Reuven is an early innovator in the cloud computing space as the founder of Enomaly in 2004 (Acquired by Virtustream in February 2012). Enomaly was among the first to develop a self service infrastructure as a service (IaaS) platform (ECP) circa 2005. As well as SpotCloud (2011) the first commodity style cloud computing Spot Market.

Reuven is also the co-creator of CloudCamp (100+ Cities around the Globe) CloudCamp is an unconference where early adopters of Cloud Computing technologies exchange ideas and is the largest of the ‘barcamp’ style of events.

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