On 03/09/2010 16:43, Remco van Mook wrote:
I guess it really depends on what you'd want to consider as more important; ease of administration or aggregation. The policy makes the assumption of large amounts of end user assignments being made - if you want out both /48 and /56 from a single PoP and you're going to do both in any significant quantity, I'd personally choose to use separate blocks for the /56 and the /48 assignments to allow for easier recycling. Then those blocks can have their own separate entry in the database, each with a single assignment size. If you need to re-hash block sizes at a later point, you can always change to a larger number of smaller blocks in the database. Database entries are (relatively) cheap.
So the "assignment-size:" really means maximum assignment size rather than exact assignment size? Yes, certainly if you're large enough, you would go for separate blocks for /48 and /56 anyway. However, smaller operations may carve them from the same block for whatever reasons. Nick