I see the cause of the discrepancy now. Bumped up our RIB against Route Views, and I see lots of disaggregation on Route Views that isn't present in our RIB. Had no idea we were being shielded from *that* many /24's. Many apologies for the Friday night stupidity :( -Brian On 2025-08-29 16:49, Brian Knight via NANOG 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/nanog@lists.nanog.org/message/EZZSRHYM...