[Nut-upsuser] Welcome to the "Nut-upsuser" mailing list (Digest mode)

Tue May 19 11:49:27 BST 2026

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.

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.
See
https://github.com/networkupstools/nut/wiki/Changing-NUT-daemon-debug-verbosity
about
getting debug logs from there.

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.

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 `*1.3.6.1.2.1.33.1.7.7.4*`, and
https://github.com/networkupstools/nut/blob/master/drivers/ietf-mib.c knows
about quite a few such command tokens.

Hope this helps,
Jim Klimov

On Tue, May 19, 2026 at 12:03 PM Albert Pavlas via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> Greetings,
>
> 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.
>
> I will preface this by saying that my configuration is using hardware that
> is * not *officially supported
> ( It's a Makelsan-branded UPS, of the 'Powerpack-SE' Series with an
> external 'iStars mini' SNMP card. ),
> but I believe this issue is common to all hardware that abides by
> *RFC-1628* controlled using the *snmp-ups* driver.
> 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:
>
> [NUT upscmd, starting a self-test. Fails to start the self-test.]
> variable-bindings:
> 1.3.6.1.2.1.33.1.7.1.0: *0*
>
> [iStars proprietary control program, starting self-test. Starts the
> self-test.]
> variable-bindings:
> 1.3.6.1.2.1.33.1.7.1.0: *1.3.6.1.2.1.33.1.7.7.4*
>
> According to some MIB descriptions
> <https://circitor.fr/Mibs/Html/UPS-MIB.php> 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.
> I believe this is because the 'upscmd' program is unable to pass values to
> it's commands that include *non*-alphanumerical symbols, like *periods*,
> as attempting to manually pass a value like '1.3.6.1.2.1.33.1.7.7.4' to the
> self-test command *always *fails.
>
> All of this stems from my speculation. I'm not well-accustomed to this
> toolkit to create a bug report in full confidence.
> 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.
>
> Kind regards,
> P.
> ------------------------------
> *From:* Nut-upsuser <nut-upsuser-bounces+pavlas=
> k-net.cz at alioth-lists.debian.net> on behalf of
> nut-upsuser-request at alioth-lists.debian.net <
> nut-upsuser-request at alioth-lists.debian.net>
> *Sent:* Tuesday, May 19, 2026 8:50 AM
> *To:* Albert Pavlas <albert.pavlas at k-net.cz>
> *Subject:* Welcome to the "Nut-upsuser" mailing list (Digest mode)
>
> [You don't often get email from
> nut-upsuser-request at alioth-lists.debian.net. Learn why this is important
> at https://aka.ms/LearnAboutSenderIdentification ]
>
> Welcome to the Nut-upsuser at alioth-lists.debian.net mailing list!
>
> To post to this list, send your message to:
>
>   nut-upsuser at alioth-lists.debian.net
>
> General information about the mailing list is at:
>
>
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Falioth-lists.debian.net%2Fcgi-bin%2Fmailman%2Flistinfo%2Fnut-upsuser&data=05%7C02%7Calbert.pavlas%40k-net.cz%7C58766fb08c8b40726b7508deb572ef74%7C529b1a46fbc54bc98fac47d64077baa4%7C0%7C0%7C639147702422872849%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=fWE0REETKZwuJfGWXflDzzqYQmqn8yId7qQMD8ELu4g%3D&reserved=0
> <https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser>
>
> If you ever want to unsubscribe or change your options (eg, switch to
> or from digest mode, change your password, etc.), visit your
> subscription page at:
>
>
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Falioth-lists.debian.net%2Fcgi-bin%2Fmailman%2Foptions%2Fnut-upsuser%2Fpavlas%2540k-net.cz&data=05%7C02%7Calbert.pavlas%40k-net.cz%7C58766fb08c8b40726b7508deb572ef74%7C529b1a46fbc54bc98fac47d64077baa4%7C0%7C0%7C639147702422898905%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=QwlYlrumADg1PqNC%2B6Y%2BFiGeGRAAm2O%2B%2FT%2F%2B36QHJPc%3D&reserved=0
> <https://alioth-lists.debian.net/cgi-bin/mailman/options/nut-upsuser/pavlas%40k-net.cz>
>
>
> You can also make such adjustments via email by sending a message to:
>
>   Nut-upsuser-request at alioth-lists.debian.net
>
> with the word `help' in the subject or body (don't include the
> quotes), and you will get back a message with instructions.
>
> You must know your password to change your options (including changing
> the password, itself) or to unsubscribe without confirmation.  It is:
>
>   P9Tw9mdj?V:9@)9
>
> Normally, Mailman will remind you of your alioth-lists.debian.net
> mailing list passwords once every month, although you can disable this
> if you prefer.  This reminder will also include instructions on how to
> unsubscribe or change your account options.  There is also a button on
> your options page that will email your current password to you.
> _______________________________________________
> Nut-upsuser mailing list
> Nut-upsuser at alioth-lists.debian.net
> https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/nut-upsuser/attachments/20260519/bb8c4808/attachment.htm>