[tor-relays] Fast flag - wrong speed in dir-spec.txt?

Michael Gerstacker michael.gerstacker at googlemail.com
Fri Aug 30 08:54:22 UTC 2019


Yep makes sense now.
Thanks for clearing this Roger:)

Am Fr., 30. Aug. 2019 um 10:31 Uhr schrieb Roger Dingledine <
arma at torproject.org>:

> On Fri, Aug 30, 2019 at 05:52:22PM +1000, teor wrote:
> > The default value for AuthDirFastGuarantee is still 100 KB.
> >[...]
> > 6/9 authorities use measured bandwidth, rather than reported bandwidth.
> > So your relay won't get Fast unless it is measured by the bandwidth
> authorities,
> > faster than 100 KB.
>
> Right, it's this last part that's critical here. Directory authorities
> that do their own "bandwidth authority" measurements use their bwauth
> numbers rather than the self-reported numbers in the relay descriptor,
> for deciding whether to assign flags.
>
> If you go to the very bottom of
> https://consensus-health.torproject.org/#relayinfo
> and put in this relay nickname or fingerprint, you'll see that 4
> directory authorities -- the ones not running bandwidth authorities --
> look at the self-reported number, and give the relay the Fast flag. But
> 5 of them, which are running bwauths, use their own numbers, which put
> the relay below the threshold. And since 5 is a majority of 9, their
> choice wins.
>
> Hope that makes sense,
> --Roger
>
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