Hopefully I've got these right...<br><br><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote"><span style="font-size: 10pt; color: black;">Are the choices of the ORs in the path all based on the
advertised bandwidth (Is that the average bandwidth value or the observed)?</span></blockquote>
<p class="MsoNormal">At the moment weighting is based on advertised bandwidth (with the exception of the entry and exit selection which has special constraints, of course). Mike's currently looking into using observed bandwidth instead.</p>
<p class="MsoNormal"><br></p><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote"><span style="font-size: 10pt; color: black;">Do the directory servers select which nodes can be Guards (Is
there a criteria for this)?</span></blockquote><p class="MsoNormal">
</p><p class="MsoNormal"><span style="font-size: 10pt; color: black;">Yes. The stable relays are favored to be guards (there might be some other criteria too...).<br></span></p><p class="MsoNormal"><br></p><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote">
<span style="font-size: 10pt; color: black;">Does the individual client select a few Guards from the
valid list of Guards and then only use them as the entry nodes?</span></blockquote><p class="MsoNormal">
</p><p class="MsoNormal"><span style="font-size: 10pt; color: black;">Yes.<br></span></p><p class="MsoNormal"><br></p><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote">
<span style="font-size: 10pt; color: black;">An OR being marked as Stable is really just a matter of it
staying up and connected to the tor network for long enough?</span></blockquote><p class="MsoNormal">
</p><p class="MsoNormal"><span style="font-size: 10pt; color: black;">Mostly. There's other considerations, for instance if accounting limit is enabled then you won't be eligible for the stable flag.<br></span></p>
<p class="MsoNormal"><br></p><p class="MsoNormal">Cheers! -Damian<br><span style="font-size: 10pt; color: black;"></span></p><br><div class="gmail_quote">On Tue, Jan 19, 2010 at 4:20 AM, Jason Cooper <span dir="ltr"><<a href="mailto:J.L.Cooper@lboro.ac.uk">J.L.Cooper@lboro.ac.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-GB">
<div>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;">Hi,</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> I am trying to get my head round the basics of the path
selection for circuits. I am putting together a simple simulator for tor
networks to help me understand it and see what effects changing OR values has
on the circuits built. I have read <a href="http://gitweb.torproject.org/tor/tor.git/blob/HEAD:/doc/spec/path-spec.txt" target="_blank">http://gitweb.torproject.org/tor/tor.git/blob/HEAD:/doc/spec/path-spec.txt</a>
but I have a few questions.</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> Are the choices of the ORs in the path all based on the
advertised bandwidth (Is that the average bandwidth value or the observed)?</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> Do the directory servers select which nodes can be Guards (Is
there a criteria for this)?</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> Does the individual client select a few Guards from the
valid list of Guards and then only use them as the entry nodes?</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> An OR being marked as Stable is really just a matter of it
staying up and connected to the tor network for long enough?</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;">Regards,</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: black;"> Jason.</span></p>
</div>
</div>
</blockquote></div><br>