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<div class="moz-cite-prefix">On 1/12/22 17:35, Adam Thompson wrote:<br>
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cite="mid:YQXPR01MB632622D548217C951C1FA3629B529@YQXPR01MB6326.CANPRD01.PROD.OUTLOOK.COM">
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<p class="MsoNormal">Before you start reading, yes, I fully
understand how silly this question is. But I need to give _<i>something</i>_
to a customer who has the ability to run ping/traceroute but
nothing else. (And they have an intermittent latency problem
that we haven’t been able to isolate yet.)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anyone curate a list of “useful” ICMP
responders that are at least kinda-sorta reliable/expected to
continue responding? For example, all the major anycast DNS
cloud providers respond to ICMP, but I don’t really want to
tell my customer to ping an anycast IP address because the RTT
results will be useless data (for comparative purposes).<o:p></o:p></p>
<p class="MsoNormal">I’m also not excited about providing random
router IP address for what should be obvious reasons. There
are some IPs that my routing paths that should be stable, but
between routing changes and control-plane policing, those
aren’t awesome. I’m looking for IPs I can suggest that are
well outside my network.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Restatement: yes, there are much better
ways to diagnose problems, but my customer can only run ping
& traceroute (and pathping, I suppose) and is capable
enough to run those tools and self-assess before calling me.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It sounds foolish to even ask, but maybe
there’s a resource out there I don’t know about…</p>
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<br>
We do not recommend or advise customers to ping random online
resources, however famous they may be. We don't want to be part of
growing that problem for other networks.<br>
<br>
We do operate a number of FreeBSD servers to capture and share
public telemetry, and do offer customers the option to ping those,
in various cities, if they are really keen to. Sometimes they do,
other times they prefer to ping the famous online addresses.<br>
<br>
We only put our name behind the servers we operate. We do not stop
them from pinging off-net resources, but we make no gurantees as to
their experience doing that.<br>
<br>
Mark.<br>
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