Can't read the value from an OID

[Blastjosh]

I'm writing a discovery rule for a radio device that we use in our company. We're trying a couple different softwares: MRTG, Cacti, and Zabbix. I've found that when I try to put an OID into the SNMP OID display it requires a pair of macro and OID to work. I can't find a macro that's just, show the value, so I'm haveing some trouble moving forward here. If it matters, I'm trying to get the tx power, though I'd prefer if there was just a macro that said "just use what the OID gives you directly.".

Any help would be much appricated.

[ISiroshtan]

Hi there.

It wood be good if you'd show SNMP OID tree and/or point to SNMP MIB in use, explained what you trying to extract and screenshots of how you set it up and Zabbix and what is not working + Zabbix version you using.

That said, you define discovery macro with any name you want, they dont have any special meaning or preset functions (except {#SNMPINDEX}). The {#MY.AWESOME.MACRO} will contain the value that it gets from OID you sepcify.

I've not touch SNMP discoveries since Zabbix 4, it used old style discovery which now is called legacy. I have more practical knowledge with this discovery but it can be slightly hard to wrap your head around it when using it first time and are new to SNMP in general.
In Zabbix 6.4 they added a newer approach to it. Reading the documentation it seems to be easier to comprehend, but I personally have no real practical knowledge of using it so might be not as proficient in advising about it.

Either way, check both links I shared above, check what approach you trying to use and see if it has answer to your question. If you still need help - please post new message with submiting points mentioned at start of my reply.

[Blastjosh]

Hello!

Thank you for the speedy response, I'm going to attach some pictures. However, to explain, I'm trying to get the TX power from a cambium device using the OID of .1.3.6.1.4.1.17713.21.1.2.5.0, when I use a MIB browser outside of Zabbix to get the number associated with it gives a response of 27 which is expected. However, when I get the same OID from the same Device the test is giving me a value of 0. If you have any more requests I'm happy to help.

From directly as an item on a device


From a discovery rule on a template



From my MIB Browser

[ISiroshtan]

First of all - forget about discovery. That feature needed if you have multiple entities in your box and you dont want manually define them all and isntead want to automatically iterate through them. As an example: having multiple interfaces on switch, Why to manually enter all 48, if you can define automatation(discovery) and just configure one and let Zabbix to detect all 48 and apply similar config to each of them.

If you just want to monitor single OID - SNMP Agent item is way to go. In regards to why it might not work - try removing leading dot from OID when entering it in Zabbix. So instead of .1.3.6.1.4.1.17713.21.1.2.5.0 just put 1.3.6.1.4.1.17713.21.1.2.5.0
Do advise if it still not working after.