Re: Can route-views be trusted?

Saku Ytti via NANOG <[email protected]>
Newsgroups gmane.org.operators.nanog
Message-ID <CAAeewD_V0KUEvZ-6xcMqf8Cz3JkpQAKiEzJX5-4Y3cJZsp3jgg@mail.gmail.com>
Occam's Razor would suggest F5 didn't withdraw it.

What they say is possible (ghosting), but not the most likely explanation.

I think the burden of proof is at F5, asking to review the BGP
sessions for advertised routes in their devices over shared sessions.
I don't expect malice, I expect incompetence.

On Tue, 3 Mar 2026 at 10:14, Hank Nussbacher via NANOG
<[email protected]> wrote:
>
> Hi,
>
>
> 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 properly withdrawn.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.
>
>
> Have others seen this type of issues from route-views?
>
>
> Thanks,
>
> Hank
>
> _______________________________________________
> NANOG mailing list
> https://lists.nanog.org/archives/list/[email protected]/message/GF6SKJK2X3NCOELFTAHZOTRO62DH5G6O/



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