<div dir="ltr"><div>One thing first: you should quickly change your mailing list password, now that you've posted it by replying to the automated welcome message. And anywhere else that its likes might be used, if it is not generated.</div><div><br></div><div>As for the original problem, see if you can enable debugging in the driver such as `snmp-ups` here -- this is primarily its work to post specific commands to a device, clients like `upscmd` only act as middlemen here.</div><div>See <a href="https://github.com/networkupstools/nut/wiki/Changing-NUT-daemon-debug-verbosity">https://github.com/networkupstools/nut/wiki/Changing-NUT-daemon-debug-verbosity</a> about getting debug logs from there.</div><div><br></div><div>Generally speaking, some drivers (including `snmp-ups`) are "umbrellas" over a ton of vendor-specific mappings, where the IETF (RFC 1628) sub-driver is a final fallback for devices where we do not have a better one.</div><div><br></div><div>Also note that arguments to commands like `upscmd` would about be sending NUT commands like `test.battery.start`, not vendor-protocol-specific items like OID `<b>1.3.6.1.2.1.33.1.7.7.4</b>`, and <a href="https://github.com/networkupstools/nut/blob/master/drivers/ietf-mib.c">https://github.com/networkupstools/nut/blob/master/drivers/ietf-mib.c</a> knows about quite a few such command tokens.</div><div><br></div><div>Hope this helps,</div><div>Jim Klimov</div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, May 19, 2026 at 12:03 PM Albert Pavlas via Nut-upsuser <<a href="mailto:nut-upsuser@alioth-lists.debian.net">nut-upsuser@alioth-lists.debian.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg1815280045681050926">
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Greetings,</div>
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I am writing to consult about an issue I've encountered over the past few days - One which I've come to understand possibly stems from a flaw within the way NUT implements its instant commands via SNMP.</div>
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I will preface this by saying that my configuration is using hardware that is <b>
not </b>officially supported</div>
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( It's a Makelsan-branded UPS, of the 'Powerpack-SE' Series with an external 'iStars mini' SNMP card. ),</div>
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but I believe this issue is common to all hardware that abides by <b>RFC-1628</b> controlled using the
<b>snmp-ups</b> driver.</div>
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My reasoning for this is SNMP packet inspection of NUT's output, compared to that of an 'iStars' proprietary control software, which actually succeeds in getting the hardware to react as expected:</div>
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[NUT upscmd, starting a self-test. Fails to start the self-test.]</div>
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variable-bindings:</div>
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1.3.6.1.2.1.33.1.7.1.0: <b>0</b></div>
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<b><br>
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[iStars proprietary control program, starting self-test. Starts the self-test.]</div>
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variable-bindings:</div>
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1.3.6.1.2.1.33.1.7.1.0: <b>1.3.6.1.2.1.33.1.7.7.4</b></div>
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According to some <a href="https://circitor.fr/Mibs/Html/UPS-MIB.php" id="m_1815280045681050926OWA34a9bcb4-6f04-63b2-ad4d-774910435b35" target="_blank">
MIB descriptions</a> I found online, the NUT implementation only sends a 'header' object identifier that prefaces all ups tests, while the proprietary method also includes the specific type of test to perform.</div>
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I believe this is because the 'upscmd' program is unable to pass values to it's commands that include
<b>non</b>-alphanumerical symbols, like <b>periods</b>, as attempting to manually pass a value like '1.3.6.1.2.1.33.1.7.7.4' to the self-test command
<b>always </b>fails.</div>
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All of this stems from my speculation. I'm not well-accustomed to this toolkit to create a bug report in full confidence.</div>
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Any help with this matter is much appreciated, and if this issue is still somehow isolated to only this unsupported manufacturer, I apologize for any confusion.</div>
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Kind regards,</div>
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P.</div>
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<div id="m_1815280045681050926divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Nut-upsuser <nut-upsuser-bounces+pavlas=<a href="mailto:k-net.cz@alioth-lists.debian.net" target="_blank">k-net.cz@alioth-lists.debian.net</a>> on behalf of <a href="mailto:nut-upsuser-request@alioth-lists.debian.net" target="_blank">nut-upsuser-request@alioth-lists.debian.net</a> <<a href="mailto:nut-upsuser-request@alioth-lists.debian.net" target="_blank">nut-upsuser-request@alioth-lists.debian.net</a>><br>
<b>Sent:</b> Tuesday, May 19, 2026 8:50 AM<br>
<b>To:</b> Albert Pavlas <<a href="mailto:albert.pavlas@k-net.cz" target="_blank">albert.pavlas@k-net.cz</a>><br>
<b>Subject:</b> Welcome to the "Nut-upsuser" mailing list (Digest mode)</font>
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