SNMP versions

SNMPv1

Send SNMP GET request using the following options:

• with SNMPv1, community ‘public’
• over IPv4/UDP
• to an Agent at demo.snmplabs.com:161
• for an instance of SNMPv2-MIB::sysDescr.0 MIB object
• having MIB lookup feature enabled

Functionally similar to:

$ snmpget -v1 -c public demo.snmplabs.com SNMPv2-MIB::sysDescr.0

from pysnmp.hlapi.v1arch import *

iterator = getCmd(
    SnmpDispatcher(),
    CommunityData('public', mpModel=0),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
    lookupMib=True
)

for response in iterator:

    errorIndication, errorStatus, errorIndex, varBinds = response

    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.

SNMPv2c

Send SNMP GET request using the following options:

• with SNMPv2c, community ‘public’
• over IPv4/UDP
• to an Agent at demo.snmplabs.com:161
• for two var-bindings with OIDs in string form

Functionally similar to:

$ snmpget -v2c -c public demo.snmplabs.com 1.3.6.1.2.1.1.1.0 1.3.6.1.2.1.1.6.0

from pysnmp.hlapi.v1arch import *

iterator = getCmd(
    SnmpDispatcher(),
    CommunityData('public'),
    UdpTransportTarget(('demo.snmplabs.com', 161)),
    ('1.3.6.1.2.1.1.1.0', None),
    ('1.3.6.1.2.1.1.6.0', None)
)

for response in iterator:

    errorIndication, errorStatus, errorIndex, varBinds = response

    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.

See also: library reference.