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 http://mibs.snmplabs.com/asn1/ as shown below.

from pysnmp.hlapi import *

iterator = getCmd(
    SnmpEngine(),
    CommunityData('public'),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ContextData(),
    ObjectType(
        ObjectIdentity(
            'IF-MIB', 'ifInOctets', 1
        ).addAsn1MibSource(
            'file:///usr/share/snmp',
            'http://mibs.snmplabs.com/asn1/@mib@'
        )
    )
)

errorIndication, errorStatus, errorIndex, varBinds = next(iterator)

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]))

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')
))