<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Hi,</p>
<p>One more RIPE Atlas research support request: this time on DSCP
marking/bleaching from as many vantage points as possible. This
one feeds into the IETF tsvwg, and is pretty applicable to
operators in the RIPE community also.</p>
<p>In short: they have one target host, and they want to test 3 DSCP
codepoints with traceroutes from as many probes as possible.</p>
<p>This is not an ongoing study. They'll run a pretty typical
traceroute config from as many probes as possible once for each
DSCP they're interested in, and they'd like to do it as rapidly as
possible. This is simplest as three one-off measurements.<br>
</p>
<p>Could you:</p>
<p>- bump their credit allowance if necessary<br>
- bump the number of probes allowed per measurement to some high
number; as close to "all probes" as possible?</p>
<p>The account they're using is <a href="mailto:ana@erg.abdn.ac.uk"
class="">ana@erg.abdn.ac.uk</a></p>
<p><br>
</p>
<p>Cheers,</p>
<p>S.</p>
<p><br>
</p>
<div class="moz-forward-container"><br>
<br>
-------- Forwarded Message --------
<table class="moz-email-headers-table" cellspacing="0"
cellpadding="0" border="0">
<tbody>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
</th>
<td>Re: Can you help perform a large-scale ATLAS measurement
campaign?</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Tue, 4 May 2021 19:48:40 +0100</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:ana@netstat.org.uk">ana@netstat.org.uk</a></td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Stephen Strowes <a class="moz-txt-link-rfc2396E" href="mailto:sds@ripe.net"><sds@ripe.net></a></td>
</tr>
</tbody>
</table>
<br>
<br>
Hi Stephen,<br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">Would you like to run (e.g.) thousands of probes
to the target with all DSCP values as rapidly as possible,
or would you run multiple measurements with 1,000 probes
each over a longer period?</div>
<div class="">
<div class="">
<div class=""><br class="">
</div>
</div>
</div>
</blockquote>
Thousands of probes as rapidly as possible, but each DSCP is a
separate measurement (so 3 separate measurements). I don’t
expect to repeat them over a longer period.</div>
<div>
<blockquote type="cite" class="">
<div class="">
<div class="">
<p class="">Either way, the credit cost will likely be the
same, but the Atlas folks may need to modify other
limits to accommodate the measurements. Your current
account settings should be visible at <a
class="moz-txt-link-freetext"
href="https://atlas.ripe.net/atlas/user/">https://atlas.ripe.net/atlas/user/</a></p>
</div>
</div>
</blockquote>
</div>
<span class="">The only limit that worries me there is:<br
class="">
Maximum number of probes per measurement:<span class="Apple-tab-span" style="white-space:pre"> </span>1,000</span>
<div class="">It doesn’t look like these measurements will hit the
other limits.<br class="">
<br class="">
<blockquote type="cite" class="">Also: Is this email address the
one to add credits to?<br class="">
<br class="">
</blockquote>
The account uses email address <a
href="mailto:ana@erg.abdn.ac.uk" class="">ana@erg.abdn.ac.uk</a>,
rather than this one.</div>
<div class="">Thanks again!<br class="">
<div>
<div class=""><br class="">
</div>
<div class="">Ana</div>
</div>
</div>
</div>
</body>
</html>