<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Thanks Robert, that's useful and a good insight on how built-in measurements are mapping sources and destinations. </div> <div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <br> </div> <div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Best,</div> <div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Vasileios</div> <div id="appendonsend"></div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Robert Kisteleki <robert@ripe.net><br> <b>Sent:</b> Tuesday, February 11, 2020 8:45 AM<br> <b>To:</b> Vasileios Giotsas <giotsas@hotmail.com>; ripe-atlas@ripe.net <ripe-atlas@ripe.net><br> <b>Subject:</b> Re: [atlas] Can I issue a traceroute measurement with multiple targets?</font> <div> </div> </div> <div class="BodyFragment"><font size="2"><span style="font-size:11pt;"> <div class="PlainText">Hello,<br> <br> Our definition of "measurement" is "one or more probes, one target" so<br> seemingly the answer is "no". However, a target can be a host name that<br> is resolved on the probe, which provides a workaround: if the name<br> resolves to different addresses, the measurement will in effect run<br> against different targets. Each result carries the target IP so in<br> effect your desired result can be achieved.<br> <br> The so called "topology measurements" (see<br> <a href="https://atlas.ripe.net/docs/built-in/">https://atlas.ripe.net/docs/built-in/</a>) are implemented this way: the<br> names topology[46].dyndns.atlas.ripe.net resolve to a different address<br> almost each time.<br> <br> The code behind this service is open source (see<br> <a href="https://github.com/RIPE-NCC/atlas-dyndns">https://github.com/RIPE-NCC/atlas-dyndns</a>) so you can relatively easily<br> set it up for your own needs. We also have the means of serving other<br> names in this domain if you have a fixed list of targets. So far there<br> has not been enough demand to implement a self-service API for this.<br> <br> Note that our current implementation does not take into account which<br> probe is asking, so in case of multiple probes involved there is only a<br> certain statistical probability for all probes measuring all targets;<br> there's no guarantee that a full source-target mesh is achieved.<br> <br> Regards,<br> Robert<br> <br> <br> On 2020-02-10 23:38, Vasileios Giotsas wrote:<br> > If I have 100 IPs to target from a single probe, is it possible to<br> > create a single measurement with 100 targets similar to how I'd do if I<br> > wanted to target a single IP from 100 probes? <br> > I've read through the Atlas API documentation and couldn't find anything<br> > like that but it looks like some of the built-in measurements do that.<br> > <br> > Thanks,<br> > Vasilis<br> </div> </span></font></div> </body> </html>