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<p><font face="Helvetica, Arial, sans-serif">Hey Carlos, <br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">Thanks for the info. We
forgot to update back the list here for future reference. <br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">After going through the
Port(s) belong to the members, noticed there were some lag ports
were wrongly selected, after re-configure (it was non lag) the
member port on IXP manager portal, it's start showing the
graphs. <br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">I think the challenge
here is when there are 50k lines of config on MRTG, need to turn
on all the debugs info and going through line by line. We did
what you mentioned on </font><b>
Check aggregates</b>, that helps to identify the issues, with a
bit of bash scripting, snmpwalk (hundred of ports!) to verify it's
working and match back to MRTG config. <br>
</p>
<p>We also had the same issue with the Sflow graph, which not MRTG
related, however we found out there were lag port misconfigured
and cause the RRD not able to insert the data. <br>
</p>
<p>Your steps were clearly explained and we wish we knew it earlier
from you on the troubleshooting :)<br>
</p>
<p>Thanks a lot Carlos, Barry and IXP Manager community! <br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 27/09/2025 08:02, Carlos Perez
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BY5PR14MB3590B7927ABABF1709294E5CBA1EA@BY5PR14MB3590.namprd14.prod.outlook.com">
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Hi OzaR,</div>
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<br>
</div>
<div
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Here’s a quick guide on how to recover a deleted switch in IXP
Manager.</div>
<div
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If a switch was deleted (instead of just being set inactive),
the infra-aggregate graphs may break because MRTG aggregates
still reference its ports.</div>
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<br>
</div>
<div
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Steps to recover:</div>
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<br>
</div>
<div
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Re-create the switch in IXP Manager</div>
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<br>
</div>
<div
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On the CLI:</div>
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<br>
</div>
<div
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cd /path/to/ixp-manager</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
php artisan ixp:create-switch</div>
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<br>
</div>
<div
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(or via the web GUI: Infrastructure → Switches → Add Switch)</div>
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<br>
</div>
<div
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Use the same name / shortname / hostname as the old device.</div>
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<br>
</div>
<div
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After creation, edit the switch and set:</div>
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<br>
</div>
<div
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Active = off</div>
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<br>
</div>
<div
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Poll = off</div>
<div
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This way MRTG won’t poll it, but it will still exist so
aggregates don’t break.</div>
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<br>
</div>
<div
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Re-generate MRTG configuration</div>
<div
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Run the generator and reload MRTG:</div>
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<br>
</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
php artisan mrtg:generate</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
service mrtg restart # or wait for cron</div>
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<br>
</div>
<div
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Check aggregates</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
Open the aggregate block (e.g. location-aggregate-00002-bits) in
the new mrtg.cfg and confirm that all referenced targets exist.
The “Use of uninitialized value” error should now be gone.</div>
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<br>
</div>
<div
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Re-attach historical data (optional)</div>
<div
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The old RRD files are still in MRTG’s WorkDir (e.g.
/var/lib/mrtg/rrd/).</div>
<div
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As long as the switch shortname/ifIndex match the old ones, MRTG
will reuse the existing RRDs and the historical graphs will
reappear.</div>
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<br>
</div>
<div
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Alternative: DB restore</div>
<div
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If the switch was only soft-deleted in the DB (check the
deleted_at field in the switch table), you can clear it:</div>
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<br>
</div>
<div
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UPDATE switch SET deleted_at = NULL, active = 0, poll = 0 WHERE
id = <ID>;</div>
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<br>
</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
Then regenerate MRTG as above.</div>
<div
style="font-family: Garamond, Arial, Helvetica, sans-serif; font-size: 14pt; color: rgb(51, 51, 51);">
If it was hard-deleted, re-creating it (step 1) is the only
option unless you restore from a DB backup.</div>
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<br>
</div>
<div
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Note from CRIX practice:</div>
<div
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At CRIX we recently migrated data from two switches we were
about to remove into a new switch first, so all historical
graphs were preserved. Once migration was complete, we set the
old switches to inactive (poll off) and only later deleted them.
This approach avoids broken aggregates and keeps continuity of
historical data.</div>
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<br>
</div>
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CarlosP.</div>
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<br>
</div>
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<b>From: </b>ixpmanager <a class="moz-txt-link-rfc2396E" href="mailto:ixpmanager-bounces@inex.ie"><ixpmanager-bounces@inex.ie></a> on
behalf of ozikat via ixpmanager <a class="moz-txt-link-rfc2396E" href="mailto:ixpmanager@inex.ie"><ixpmanager@inex.ie></a><br>
<b>Date: </b>Thursday, 18 September 2025 at 10:07<br>
<b>To: </b>Barry O'Donovan (INEX)
<a class="moz-txt-link-rfc2396E" href="mailto:barry.odonovan@inex.ie"><barry.odonovan@inex.ie></a>, INEX IXP Manager Users Mailing
List <a class="moz-txt-link-rfc2396E" href="mailto:ixpmanager@inex.ie"><ixpmanager@inex.ie></a><br>
<b>Cc: </b>ozikat <a class="moz-txt-link-rfc2396E" href="mailto:ozikat12@gmail.com"><ozikat12@gmail.com></a><br>
<b>Subject: </b>Re: [ixpmanager] Infra Aggregate Graph not
Working After Removing a Switch<br>
<br>
</div>
<div class="PlainText" style="font-size: 11pt;">One more thing,
the deleted/removed Swtich on IXP Manager portal, it's<br>
not appear on mrtg.cfg config file though. Hence the stats
should be<br>
working i assume.<br>
<br>
<br>
<br>
On 19/09/2025 00:00, Barry O'Donovan (INEX) wrote:<br>
><br>
><br>
>> The switch has been removed from IXP manager, will
try add it back and<br>
>> uncheck poll and active<br>
>><br>
><br>
> If it’s been removed fully, then do no re-add it if the
objective is to<br>
> remove it.<br>
><br>
> I asked you to uncheck those boxes because you told me
you had made no<br>
> changes to IXP Manager.<br>
><br>
> I’m now unclear as to whether you always had the switch
removed from IXP<br>
> Manager, or just recently deleted it? If it was just
recently, please<br>
> see if it resolved the issue.<br>
><br>
><br>
<br>
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