topic Re: Using proprietary MIB files with the SNMP traps extension in Extensions

Using proprietary MIB files with the SNMP traps extension

AntonioSousa — Thu, 05 Jun 2025 13:29:54 GMT

If you develop your v2 extension, you can include proprietary MIB files, according to https://www.dynatrace.com/support/help/extend-dynatrace/extensions20/data-sources/snmp-extensions/snmp-schema-reference

But, if you use the SNMP traps, you will get the traps into the logs, and there will be no way of getting the more friendly OID names.

Now, the same link above specifies that there are directories that have those MIB files, as can be seen below.

The question is if we can put our proprietary MIB files there, and if they will be appeaar in Logs with a more familiar OID name?

Re: Using proprietary MIB files with the SNMP traps extension

krzysztof_suchc — Tue, 21 Feb 2023 13:46:29 GMT

Custom MIBs can be added by creating a custom extension. Link to the documentation https://www.dynatrace.com/support/help/extend-dynatrace/extensions20/data-sources/snmp-extensions/snmp-schema-reference#add-your-own-mib-file. Unfortunately, we recently found a bug and it will not work as designed. The team is working to solve it. Temporary workaround: the MIB files can be dropped into the default folder with MIB files.

Linux: /opt/dynatrace/remotepluginmodule/agent/res/mib-files/
Windows: C:\%PROGRAMFILES%\dynatrace\remotepluginmodule\agent\res\mib-files

Re: Using proprietary MIB files with the SNMP traps extension

AntonioSousa — Wed, 29 Mar 2023 22:14:29 GMT

@krzysztof_suchc

Seems like the MIB files don't survive an AG update. Can you confirm?

Re: Using proprietary MIB files with the SNMP traps extension

krzysztof_suchc — Thu, 30 Mar 2023 09:39:57 GMT

That is true, but from AG v265 there will be a permanent folder for custom MIB files. The documentation will be updated, but I believe the final paths will be:
Linux: /var/lib/dynatrace/remotepluginmodule/agent/conf/userdata/mib-files-custom
Windows: C:\ProgramData\dynatrace\remotepluginmodule\agent\conf\userdata\mib-files-custom

Re: Using proprietary MIB files with the SNMP traps extension

jegron — Fri, 23 Jun 2023 06:00:46 GMT

Hi @krzysztof_suchc ! Do we need to restart something on the AG. Seems permanent MIB Files is not immediately taken into account.

Re: Using proprietary MIB files with the SNMP traps extension

LukaszMal — Thu, 29 Jun 2023 07:07:25 GMT

@Hi @jegron if you manually put MIB files into a directory with the default package it will be overwritten by the default package in the next update. AG restart is required to load new MIB files, because modules are being loaded when the DataSource process starts. The proper way to add MIB files is to the custom extension zip package. They will be deployed and no further AG restarts are needed because a new process starts when the custom extension is assigned to an AG

Re: Using proprietary MIB files with the SNMP traps extension

jegron — Thu, 29 Jun 2023 07:20:59 GMT

Hi @LukaszMal !

I need to add custom mibs to interpret traps. So I added it to :

/var/lib/dynatrace/remotepluginmodule/agent/conf/userdata/mib-files-custom

But Dynatrace SaaS does not take it into account despite services restart. It works after several days. Is there a cache mechanism somewhere?

Re: Using proprietary MIB files with the SNMP traps extension

LukaszMal — Thu, 29 Jun 2023 08:06:51 GMT

Hi @jegron

There is no cache mechanism, it should work after one AG restart

Re: Using proprietary MIB files with the SNMP traps extension

jegron — Thu, 29 Jun 2023 08:12:29 GMT

Ok, so I will open a case and provide log files for analysis 🙂

Thanks for your quick answers.

Re: Using proprietary MIB files with the SNMP traps extension

SURIYIO — Wed, 16 Oct 2024 05:59:26 GMT

How can I check if the upload of a custom MIB file is complete? I've looked in the Dynatrace community and Dynatrace documentation, but no one has provided a method for "How to check"