The first thing to do is to sit down with your TA leads, either as a group or individually, and create a complete list of all the steps necessary to enable IPv6 in the various parts of the enterprise as revealed in the component worksheets. With all the steps listed, start identifying dependencies and milestones, and begin to develop a timeline. You may be thinking, "This seems a lot like Project Management 101," and you would be absolutely right! There is
nothing magical or mysterious about this step.
You will come to rely even more heavily on your TA leads and TA contributors as you plan and execute the transition. They will be responsible for coming up with the configurations and actually enabling IPv6 across the enterprise. Use the same people who filled out the reconnaissance worksheets to build and implement the required changes.
What follows is essentially a list, in no particular order, of lessons learned and key things to watch out for as you plan and execute the transition:
● Identify any requirement that may need capital funding up front. This may be hardware or software upgrades, training, or new systems. Where upgrades are necessary, if you can get capital funding, plan for native IPv6. If you can't get capital funding, you may have to come up with another plan for that component, such as an alternate transition mechanism (for example, tunneling or translation).
● Lab and/or prototype testing should be performed whenever possible. Begin lining up the resources early, such as lab space, vendor demo gear, etc.
● Coming up with an IPv6 addressing scheme is one of the most important of all your efforts. When else do you get a second chance to correct all the mistakes made with your IPv4 addressing plan? Rather than just doling out subnets sequentially, you should think through the implications and come up with a plan that will be flexible enough to take your enterprise into the foreseeable future and beyond. Perhaps you only have two or three sites, but what will your organization look like in 50 years? Perhaps now your organization is limited to one geographic territory, but who knows what will happen in 50 years? The point is, before you begin throwing IPv6 space at your network, come up with the overarching principles that will guide all your IPv6 assignments.
● Prior to acquiring IPv6 address space from a service provider, be sure you understand the differences between provider independent (PI) and provider assigned (PA) address space. This concept is fundamentally new in IPv6, so be sure you understand all the implications of which type you acquire.
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