Re: Status of the 16-bit AS Number space

[Masataka Ohta <[e-mail]>]

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