> > I would understand a hand-waving explanation of "this is the Internet, > it's always being updated, and everyone has a different view of it" if > the discrepancy were 10^2 or even 10^3. But over 10^5? That's a bit like > the three top ASNs for route count just disappeared from the Internet.
It really isn't hand waving. It's honestly the correct answer. :) When you dig into the BGP update data that you can see from your upstreams, (or parse through Geoff's data :) ) you can really get some fascinating insight into how dynamic this stuff actually is. With the frequent side effect of wondering just how drunk a given ASN may be some days. ( Or most days. :p ) On Fri, Aug 29, 2025 at 5:49 PM Brian Knight via NANOG < [email protected]> wrote: > On 2025-08-29 15:15, Tom Beecher via NANOG wrote: > > Geoff's data at Potaroo had the FIB clearing 1M back in Febuary if > > memory > > serves. So this already happened months ago. > > I'm confused by that. > > I show 990450 prefixes in my FIB, 990478 in RIB. > > Potaroo shows 1022758 prefixes in FIB for today. > > Why would there be a discrepancy of over 32k prefixes? > > We're blocking exactly 0 prefixes from our three upstreams. > > I would understand a hand-waving explanation of "this is the Internet, > it's always being updated, and everyone has a different view of it" if > the discrepancy were 10^2 or even 10^3. But over 10^5? That's a bit like > the three top ASNs for route count just disappeared from the Internet. > > -Brian > _______________________________________________ > NANOG mailing list > > https://lists.nanog.org/archives/list/[email protected]/message/EZZSRHYMF33CNM2V5IJ4S3B2NABQC2JF/ > _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/[email protected]/message/KPPF6QPF3SORUVW367HKWBYNKV6NTGIM/
