How to pass MIB to the Manager

  1. How to make use of random MIBs at my Manager application?

  1. Starting from PySNMP 4.3.x, plain-text (ASN.1) MIBs can be automatically parsed into PySNMP form by the PySMI tool. PySNMP will call PySMI automatically, parsed PySNMP MIB will be cached in $HOME/.pysnmp/mibs/ (default location).

    MIB compiler could be configured to search for plain-text MIBs at multiple local and remote locations. As for remote MIB repos, you are welcome to use our collection of ASN.1 MIB files at https://github.com/lextudio/mibs.snmplabs.com/tree/master/asn1 as shown below.

import asyncio
from pysnmp.hlapi.asyncio import *

async def run():
    snmpEngine = SnmpEngine()
    get_result = await getCmd(
        snmpEngine,
        CommunityData('public'),
        UdpTransportTarget(('demo.pysnmp.com', 161)),
        ContextData(),
        ObjectType(ObjectIdentity('IF-MIB', 'ifInOctets', 1).addAsn1MibSource('file:///usr/share/snmp',
                                                                                'https://mibs.pysnmp.com/asn1/@mib@'))
    )

    errorIndication, errorStatus, errorIndex, varBinds = await get_result
    if errorIndication:
        print(errorIndication)
    elif errorStatus:
        print('%s at %s' % (errorStatus.prettyPrint(),
                            errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))
    else:
        for varBind in varBinds:
            print(' = '.join([x.prettyPrint() for x in varBind]))

asyncio.run(run())

Download script.

Alternatively, you can invoke the mibdump.py (shipped with PySMI) by hand and this way compile plain-text MIB into PySNMP format. Once the compiled MIBs are stored in a directory, add the directory to your MibBuilder’s MibSources.

builder = engine.getMibBuilder()
# Make ./mibs available to all OIDs that are created
# e.g. with "MIB-NAME-MIB::identifier"
builder.addMibSources(builder_module.DirMibSource(
    os.path.join( HERE, 'mibs')
))