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Re: Approach to allocating netblocks
From: Dave Israel <davei () otd com>
Date: Wed, 14 Jan 2009 11:17:20 -0500

If most of your allocations are small, and you don't plan on growing
them very often, you'll probably do better with starting at the ends and
working your way inward.For example,. for /30s, allocate 0/30,  then
4/30,  248/30, and 252/30 before moving in to 8/30, 12/30, 240/30, and
244/30.  That way you're preserving larger netblocks for as long as
possible before breaking them up.

Frank Bulk wrote:
For the first time we have our own ARIN-assigned netblocks that we can now
split out and divide to our customers.

What's the best approach to handing out /30's, /29's, etc. that is efficient
as possible but allows for customers to expand their allocation to a
neighboring block?  

I was thinking of having one /24 for each block size, and then do the divide
and conquer approach by allocating the first /30, for example, as 0 and 128,
then next two at 64 and 192, etc.  Once there's only one /30 free between
each allocation, I would start using another /24.  Of course, that would
mean 50% (or less) utilization.




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