On 28 Oct 2015, at 04:38, Nick Mathewson <nickm@torproject.org> wrote:

    * Authorities serve as a location for distributing consensus
      documents, descriptors, extrainfo documents, and
      microdescriptors...

         * To directory mirrors. (BW?, PUB?, LOC?)

         * To clients that do not yet know a directory mirror. (BW!!, PUB)

The FallbackDirectory feature in #15775 will reduce authority bandwidth requirements if it is merged, as a list of high-uptime, stable mirrors will be consulted before, or simultaneously with (#4483, prop #210) the authorities.

Tim

Tim Wilson-Brown (teor)

teor2345 at gmail dot com
PGP 968F094B

teor at blah dot im
OTR CAD08081 9755866D 89E2A06F E3558B7F B5A9D14F