Doesn't work with SNMPv1 devices

[rrcollier]

The exporter is great with my devices that support snmp 2c, but just times out contacting devices that only have v1 support.

pysnmp seems to support 1, 2c & 3, could you add a way of specifying the snmp version to use?

[turnrye]

Same request here -- trying to use this with Mikrotik RouterBoard devices and requests just hang.

[brian-brazil]

I'd be happy to take a pull request to add this.

[turnrye]

Cool, I'll look into it tonight/tomorrow. Still getting up to speed on how prometheus works and building it into our existing automation.

[brian-brazil]

I expect the man challenge here will be working with the snmp library we use, it should be relatively easy plumbing.

[turnrye]

Great!

[jcollie]

I too would like to see this, I have a Ubiquity UniFi AP-Pro and it doesn't respond to v2c SNMP queries, only v1.

[turnrye]

@jcollie I originally thought this was a code/lib problem but as it turned out it was my configuration. The improvement to be made IMO is in the exporter's error handling. I can send you an example of what my config looks like for Mikrotik devices -- it took a good bit of effort to get it setup but it works quite well now.

[jcollie]

@ryanturner I'd certainly like to see your config, but I'm pretty sure that In my case it's a v1 vs v2c issue:

[jeff@home01 ~]$ snmpget -v1 -c xxxxxxxx 192.168.4.51 SNMPv2-MIB::sysName.0
SNMPv2-MIB::sysName.0 = STRING: LivingRoom
[jeff@home01 ~]$ snmpget -v2c -c xxxxxxxx 192.168.4.51 SNMPv2-MIB::sysName.0 
Timeout: No Response from 192.168.4.51.

[rrcollier]

In my case (with a unifi uap lite) it's definetly a v1 vs v2c issue.

[SuperQ]

I've got a patch in progress for v1 and v3 support: https://github.com/SuperQ/snmp_exporter.

[jcollie]

This should probably be closed as the latest version works just fine with both SNMP v1 and v2c (probably SNMP v3 as well but I haven't tested).