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 IPv6/UDP
- to an Agent at [::1]: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
udp6:[::1]:161
1.3.6
from pysnmp.hlapi import *
for errorIndication, \
errorStatus, errorIndex, \
varBinds in nextCmd(SnmpEngine(),
UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
Udp6TransportTarget(('::1', 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.