North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Top-50 Report
> > Paul A Vixie <[email protected]> writes: > * > Remember, this just looks at the classful routes and tries to cidrize > * > them at the origin AS level. It assumes no holes either so it's quite > * > possible to get a lot more back. Yes there are 31K classful routes. That' > * s > * > either a lot of legacy or not a lot of aggregation. > * > --Tony > * > * Given that the routing table stood at 28000 when CIDRD was killed off, I'd > * say that there have either been some recent classful allocations, or a lot > * of ancient networks suddenly getting advertised. > > Or a lot less care and letting classful size announcments leak out and > not aggregating to the allocation folks were given. To highlight I pick > the last 50 classful entries I see in the 193, 198 and 206 range just > to give a random sample and to illustrate. this is what i was getting at in my note a week ago or so. it appears that many more networks are being announced by 2+ as's. so i'm assuming we're sort of doomed to poor aggregation as more and more people dual-home to providers. and i still see some pretty poor aggregation (like /22's and /24's) in some recent allocations. -brett - - - - - - - - - - - - - - - - -
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