如何在PySNMP中实现自定义MIB？

Question

I already have the MIB text file (do I need to make this into a .py file somehow??). I am trying to use PySNMP (not net-snmp). I have been able to connect to my device and print out some info, but the info was not very helpful (just ObjectName, ObjectIdentifier, etc). I want to be able to communicate with the device (send commands to change and read values), but all of the tutorials I have seen seem to be of little help. Does anyone know how I can use my custom MIB to effectively communicate with my device? Any good sites I am missing? http://pysnmp.sourceforge.net/ is ok, but I need something else...

Answer 1

To use MIBs with pysnmp you should first convert your MIB into pysnmp format (which is a collection of Python objects). The conversion is done with the pysnmp/tools/build-pysnmp-mib shell script in the following manner:

$ sh build-pysnmp-mib -h
build-pysnmp-mib: illegal option -- h
Convert MIB text file into PySNMP-compliant module, see http://pysnmp.sf.net.
Usage: build-pysnmp-mib [-o pysnmp-mib-file ] [ mib-text-file ]

Make sure you also have libsmi installed (pysnmp scripts use the smidump tool from libsmi distribution).

Unless you put your new pysnmp MIB file into pysnmp/smi/mibs/ (which is not a good idea), you would also have to point pysnmp to the location where your own MIBs are. This could be done as explained here .

Once you are done with the MIB, you can use it from your scripts as explained here .

You could make a quick check how your new MIB works by invoking pysnmpget/pysnmpset tools shipped with the pysnmp-apps package.

BTW, chances are that the MIB you need to work with is already converted into pysnmp format and distributed with the pysnmp-mibs package.