Hi, On Sat, May 11, 2002 at 09:56:25AM +0300, Pekka Savola wrote:
It would be an act of extreme stupidity (IMO) if NREN's started giving addresses and *providing connectivity* (directly) as required by the policy for every department, student @ home, etc. (This must be delegated to universities etc. for practical reasons.)
There's nothing wrong with hierarchy :-) - so the NREN can route a /42 (for example) to a university, out of which individual /48s are assigned to the universities departments. Of course the NREN would have to have the last word in assignment of the /48s, but that doesn't mean the /48 have to be connected directly to a NREN router. (This is why we use HD ratio - because if you do hierarchy, you will never achieve maximum address space usage - and the HD ratio rule takes this into account)
This is against the spirit of "/48 to every organization, no matter how big".
Not really. It's also "/48 to every organization, no matter how *small* (if it is subnetting)". It depends very much of what makes sens as an "organization" in your context. [..]
So let's see: an university of less than about 65,000 people will need a /28 to cope with this (with HD-ratio 80%). Assume a NREN has 20 (usually a lot more but some are small) of these. NREN then requires at least /22 (with HD ratio 80%) to cope with these allocations.
Do we really want to go down this road?
No, but nobody said you have to assign a /48 to every single person working at the university. A useful thing might be to assign /48s to every campus, or every larger department, and maybe one /48 per student hostel (hosting "many" students, each of them gets a /64). So with some reason instead of a "this can't work!" attitude, I think this can work well - if one insists on doing non-useful things, it will break (but yes, this is a problem with the "one site" = /48 rule, because it's too vague to work unless people are reasonable). Gert Doering -- NetMaster -- Total number of prefixes smaller than registry allocations: 45114 (45077) SpaceNet AG Mail: netmaster@Space.Net Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0 80807 Muenchen Fax : +49-89-32356-299