Various 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 the 1.3.6.1.2.1.1.1.0 OID (e.g. SNMPv2-MIB::sysDescr.0 MIB object)
• Based on asyncio I/O framework

Functionally similar to:

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

import asyncio

from pysnmp.hlapi.v1arch.asyncio import *


@asyncio.coroutine
def run():
    snmpDispatcher = SnmpDispatcher()

    iterator = getCmd(
        snmpDispatcher,
        CommunityData('public', mpModel=0),
        UdpTransportTarget(('demo.snmplabs.com', 161)),
        ('1.3.6.1.2.1.1.1.0', None)
    )

    errorIndication, errorStatus, errorIndex, varBinds = yield from 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]))

    snmpDispatcher.transportDispatcher.closeDispatcher()


asyncio.get_event_loop().run_until_complete(run())

Download script.

Bulk walk MIB

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

• with SNMPv2c, community ‘public’
• over IPv4/UDP
• to an Agent at demo.snmplabs.com:161
• for all OIDs past SNMPv2-MIB::system
• run till end-of-mib condition is reported by Agent
• based on asyncio I/O framework

Functionally similar to:

$ snmpbulkwalk -v2c -c public -Cn0 -Cr50

demo.snmplabs.com SNMPv2-MIB::system

import asyncio

from pysnmp.hlapi.v1arch.asyncio import *


@asyncio.coroutine
def run(varBinds):

    snmpDispatcher = SnmpDispatcher()

    while True:
        iterator = bulkCmd(
            snmpDispatcher,
            CommunityData('public'),
            UdpTransportTarget(('demo.snmplabs.com', 161)),
            0, 50,
            *varBinds
        )

        errorIndication, errorStatus, errorIndex, varBindTable = yield from iterator

        if errorIndication:
            print(errorIndication)
            break

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

        varBinds = varBindTable[-1]
        if isEndOfMib(varBinds):
            break

    snmpDispatcher.transportDispatcher.closeDispatcher()


loop = asyncio.get_event_loop()
loop.run_until_complete(
    run([ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr'))])
)

Download script.

See also: library reference.