Re: Can route-views be trusted?
Jon Lewis via NANOG <[email protected]>
| Newsgroups | gmane.org.operators.nanog |
|---|---|
| Message-ID | <[email protected]> |
On Tue, 3 Mar 2026, Hank Nussbacher via NANOG wrote: > We had F5 announce a /24 on our behalf. We then asked F5 to withdraw that > /24. Route-views showed the /24 still being announced via an F5 path. F5 > claims that route-views is incorrect and the route had been properly > withdrawn. They state that public route collectors (including route-views) > reflect what their individual collector peers are seeing at a given moment. > Due to propagation timing, peer refresh intervals, and collector update > cycles, visibility across different monitoring platforms is not always > perfectly synchronized in real time. It does take time for route updates to propagate, and I've seen some providers/platforms take what seems like unreasonable minutes to drop routes after origination has ceased...but if they're hanging around longer than that, odds are [extremely high], F5 is still leaking the route to someone who's propagating it to the Internet (or at least to route-views) in order for route-views to see it. ---------------------------------------------------------------------- Jon Lewis, MCP :) | I route Blue Stream Fiber, Sr. Neteng | therefore you are _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________ _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/[email protected]/message/ALACJP6ZZSFPREVY7IF4N6AOUYIQ2TPJ/