I have a situation where I'm trying to do some MIB-processing on a pre-existing, non-translated SNMP walk in the cloud. I have a set of translated PySMI MIB json files, but I'm unsure how to match the correct MIB with OIDs within the walk.
I saw in this post that PySNMP was unable to automatically detect a MIB but that it was being worked on. I tried to create a simple implementation myself using regex, but I cannot find the correlation between a MIB's module identity and the OIDs that I am retrieving from the SNMP walk.
I've seen the MIB index that can be generated from PySMI, which seemed promising, but I'm not sure how I can use that to find the human-readable version of an OID from a collection of MIB files.
What am I missing? Thanks!
A way to deal with this would be to build the OID->MIB index by running PySMI-based script (or just vanilla mibdump tool) over your entire MIB collection. Actually, such index can be found here.
Once you have this OID->MIB mapping, you could run the OIDs your snmpwalk script receives, match them (or their prefixes) against the OID->MIB map and load up the required MIBs.
Unfortunately, this relatively simple process has not been built into pysnmp yet, but it should not be hard to implement within your script.