Re: Can route-views be trusted?

Hank Nussbacher via NANOG <[email protected]>
Newsgroups gmane.org.operators.nanog
Message-ID <[email protected]>
On 03/03/2026 11:59, James Bensley wrote:


Excellent and useful feedback!


Thanks,

Hank


> Hi Hank,
>
> It is possible for routes to get stuck in the global routing table, 
> although it is pretty rare.
>
> The is a project called the BGP Clock, they announce prefixes, then 
> withdraw them, and then check if they are still visible anywhere, to 
> see if the prefixes are "stuck". It's called the BGP Clock because 
> they encode the time in the IPv6 prefix, so each prefix is unique and 
> you can see when it was announced (and thus how long it's been 
> lingering in the DFZ).
>
> F5s ASN in one that shows as potentially having this problem according 
> to this tool: 
> https://www.thousandeyes.com/bgp-stuck-route-observatory/?asn=35280
>
> Note that this can't be taken as any sort of guarantee and this is 
> just a "hint" because there are many variables at play.
>
> I actually don't know what the "OBSERVED PATHS" is showing here, 35280 
> doesn't appear in any of them, so are they the paths "up to" 35280 ?
>
>
> With kind regards,
> James.

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