Chris Gotstein wrote: > We are a small ISP that is in the process of setting up IPv6 on our > network. We already have the ARIN allocation and i have a couple > routers and servers running dual stack. Wondering if someone out there > would be willing to give me a few pointers on setting up my addressing > scheme?
Strange, I recall that you had to submit one when requesting address space from ARIN. Why don't you use that one? > I've been mulling over how to do it, and i think i'm making it > more complicated than it needs to be. You can hit me offlist if you > wish to help. Thanks. It all depends on your network and how you want to set it up, but for the sake of internal aggregation: * Determine the expected amount of IPv6 customers at a certain location for the next X years, making X > 2 (though 10 is probably a better idea, just in case, if don't want to do it again ;) ) * Take that number round it up to a power of 2 * Every customer gets a /48, you know the number, which is a power of 2, thus root it, and you know how many bits you need at that site eg expect 200 customers, round to power of 2 thus 256, which is 2^8, thus you will need a /48 + 8 bits = /40 at that location. You now know how much address space you need at that location for the next X years. Repeat that for all your locations / routing areas, basically the PoPs or termination points of your customers; or if you are really big do that per city/town/suburb. Keep enough space (the rounding helps there quite a bit, especially with numbers like 50k customers ;) Now you have an overview of what you expect to be allocating at each and every site. To add a little growth/future proof and to make live easy, you could either opt at this stage to round everything off to 'nice' numbers, eg only use /40's or /36's per PoP. Thus making everything the same, or doing things like grouping smaller PoPs together. Then when you have done that, take those blocks, and try to squeeze them a bit together. You should now have arrived to the address plan that you originally submitted to ARIN. Fill those blocks into a nice database, roll a PHP/shell/perl/whatever script to spit out your router configuration and presto: you are done. Enjoy the weekend ;) Greets, Jeroen
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