North American Network Operators Group|
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Re: number of unaggregated class C's in swamp?
Dennis, > I like the idea of measuring each and every class-A-sized block > against some standard separately, since a lot of the class-C space has > been allocated to regional registries this way and it inconveniences > those places which have done the best the least. I'm less attached to > the number 1200 in particular, but I do think an explicit target should > be chosen which represents both a tractable limit to design big routers for > and which allows the implementation of efficient address allocation strategie s > which won't have to be tighened over time. I do note that 1200 is > close to the threatened /18 address filter, but this is mostly accidental. > I'd much rather see each space filled with /14's and /20's, and even > an occasional /23 or /25, as appropriate and as long as the filled block > was only 1200 (or N, for some well-defined N) routes, rather than > picking an arbitrary, one-size-fits-all filter limit. The latter is > a sign of failure. So, perhaps we should just look at the total amount of IP address space advertised by a provider in its routing advertisements, then divide this amount by the number of routes the provider advertises, and see whether the resulting number meets the goal. Yakov.