Geoff Huston wrote:
You, and the community, may find these two AS number use reports helpful.
It's quite interesting to see the lack of scalability of multihoming
by routing is destroying the Internet.
The first, http://www.potaroo.net/tools/asn16/ looks at the levels of
consumption of the 16 bit AS number space and makes some predications,
based on curve fitting to recent usage data, as to the anticipated
lifetime of this number pool.
According to http://bgp.potaroo.net/as2.0/bgp-active.html, most ASes
are used with /24 prefixes seemingly for punching holes.
It's not surprising that 32-bit AS space will exhaust in near future
just like 32-bit address space is exhausting and the only solution
is to deply end-to-end scalable multihoming AND restrict top level
aggregator space, both of which IPv6 failed to do.
Masataka Ohta
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