MIB tweaks
**********


Waive MIB lookup
================

Perform SNMP GETNEXT operation with the following options:

* with SNMPv2c, community 'public'

* over IPv4/UDP

* to an Agent at demo.snmplabs.com:161

* for an OID in string form

* do not resolve response OIDs and values into human-freidly form

False lookupMib keyword arguments could make pysnmp waiving OIDs and
values resolution in response variable-bindings, into human friendly
form.

Functionally similar to:

   $ snmpwalk -v2c -c public -ObentU demo.snmplabs.com 1.3.6.1.2.1

   from pysnmp.hlapi import *

   for (errorIndication,
        errorStatus,
        errorIndex,
        varBinds) in nextCmd(SnmpEngine(),
                             CommunityData('public'),
                             UdpTransportTarget(('demo.snmplabs.com', 161)),
                             ContextData(),
                             ObjectType(ObjectIdentity('1.3.6.1.2.1.1')),
                             lookupMib=False):

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

"Download" script.


Preload PySNMP MIBs
===================

Send a series of SNMP GETNEXT requests using the following options:

* with SNMPv3 with user 'usr-md5-des', MD5 auth and DES privacy
  protocols

* over IPv4/UDP

* to an Agent at demo.snmplabs.com:161

* for all OIDs starting from 1.3.6

* preload all Python MIB modules found in search path

Functionally similar to:

   $ snmpwalk -v3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 -m ALL demo.snmplabs.com:161 1.3.6

   from pysnmp.hlapi import *

   for (errorIndication,
        errorStatus,
        errorIndex,
        varBinds) in nextCmd(SnmpEngine(),
                             UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
                             UdpTransportTarget(('demo.snmplabs.com', 161)),
                             ContextData(),
                             ObjectType(ObjectIdentity('1.3.6').loadMibs())):

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

"Download" script.


Custom ASN.1 MIB path
=====================

Send SNMP GET request using the following options:

* with SNMPv2c, community 'public'

* over IPv4/UDP

* to an Agent at demo.snmplabs.com:161

* for IF-MIB::ifInOctets.1 MIB object

* pass non-default ASN.1 MIB source to MIB compiler

Functionally similar to:

   $ snmpget -v2c -c public -M /usr/share/snmp demo.snmplabs.com IF-MIB::ifInOctets.1

   from pysnmp.hlapi import *

   errorIndication, errorStatus, errorIndex, varBinds = next(
       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@')))
   )

   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.


Custom PySNMP MIBs location
===========================

Send a series of SNMP GETBULK requests using the following options:

* with SNMPv3, user 'usr-none-none', no authentication, no privacy

* over IPv4/UDP

* to an Agent at demo.snmplabs.com:161

* for all OIDs within TCP-MIB::tcpConnTable column

* TCP-MIB Python module will be searched by a user-specified
  filesystem path (/opt/mib/pysnmp) and in Python package
  (python_packaged_mibs) which should be in sys.path

Functionally similar to:

   $ snmpbulkwalk -v3 -lnoAuthNoPriv -u usr-none-none -Cn0 -Cr50 demo.snmplabs.com  TCP-MIB::tcpConnTable

   from pysnmp.hlapi import *

   for (errorIndication,
        errorStatus,
        errorIndex,
        varBinds) in bulkCmd(SnmpEngine(),
                             UsmUserData('usr-none-none'),
                             UdpTransportTarget(('demo.snmplabs.com', 161)),
                             ContextData(),
                             0, 50,
                             ObjectType(
                                 ObjectIdentity('TCP-MIB', 'tcpConnTable').addMibSource('/opt/mibs/pysnmp').addMibSource('python_packaged_mibs')
                             ),
                             lexicographicMode=False):

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

"Download" script.

See also: library reference.
