An issue with having a FAQ for the failing USBs is that people will perform the procedure when it is not necessary. <div><br></div><div>I think though that there should still be more debugging info for connections.<br><br>On Monday, January 25, 2016,  &lt;<a href="mailto:sarah.wassermann@student.ulg.ac.be">sarah.wassermann@student.ulg.ac.be</a>&gt; wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">+1 !<br>
<br>
Sarah<br>
<br>
----- Mail original -----<br>
De: &quot;Ondřej Caletka&quot; &lt;<a href="javascript:;" onclick="_e(event, &#39;cvml&#39;, &#39;Ondrej.Caletka@cesnet.cz&#39;)">Ondrej.Caletka@cesnet.cz</a>&gt;<br>
À: <a href="javascript:;" onclick="_e(event, &#39;cvml&#39;, &#39;ripe-atlas@ripe.net&#39;)">ripe-atlas@ripe.net</a><br>
Envoyé: Lundi 25 Janvier 2016 16:20:50<br>
Objet: [atlas] An article/FAQ entry about probe troubleshooting<br>
<br>
Hi all,<br>
<br>
it seems that failing probes are getting more and more to be an issue,<br>
possibly due to USB flash drive failure. I think it would be nice if<br>
there was an article / FAQ entry with some official troubleshooting<br>
procedures, so we could just send a link to anybody complaining about<br>
non functional probe.<br>
<br>
Is there something like this on the roadmap? Perhaps we as the community<br>
could make something up:<br>
<br>
 - how to check whether the port probe is connected to has proper IP and<br>
DNS parameters and is allowed to establish a SSH session to TCP port 443<br>
in the Internet (beware of DPI firewalls that allow HTTPS but not SSH<br>
over 443)<br>
<br>
 - how to check the LED status and the SOS list at the probe page (the<br>
current LED explanation in the FAQ is too techy and even power users<br>
like me still don&#39;t understand all presented states :) )<br>
<br>
 - how to diagnose USB flash drive failure, how to force reformatting<br>
the flash drive and how to replace it with a new one<br>
<br>
<br>
What do you think?<br>
<br>
Cheers,<br>
Ondřej Caletka<br>
CESNET<br>
<br>
<br>
</blockquote></div>