Various SNMP versions¶

SNMPv1¶

Send SNMP GET request using the following options:

with SNMPv1, community ‘public’

over IPv4/UDP

to an Agent at demo.pysnmp.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.pysnmp.com SNMPv2-MIB::sysDescr.0

import asyncio
from pysnmp.hlapi.v1arch.asyncio import *


async def run():
    with SnmpDispatcher() as snmpDispatcher:
        iterator = await get_cmd(
            snmpDispatcher,
            CommunityData("public", mpModel=0),
            await UdpTransportTarget.create(("demo.pysnmp.com", 161)),
            ("1.3.6.1.2.1.1.1.0", None),
        )

        errorIndication, errorStatus, errorIndex, varBinds = iterator

        if errorIndication:
            print(errorIndication)

        elif errorStatus:
            print(
                "{} at {}".format(
                    errorStatus.prettyPrint(),
                    errorIndex and varBinds[int(errorIndex) - 1][0] or "?",
                )
            )
        else:
            for varBind in varBinds:
                print(" = ".join([x.prettyPrint() for x in varBind]))


asyncio.run(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.pysnmp.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.pysnmp.com SNMPv2-MIB::system

import asyncio
from pysnmp.hlapi.v1arch.asyncio import *


async def run(varBinds):
    with SnmpDispatcher() as snmpDispatcher:
        while True:
            iterator = await bulk_cmd(
                snmpDispatcher,
                CommunityData("public"),
                await UdpTransportTarget.create(("demo.pysnmp.com", 161)),
                0,
                50,
                *varBinds,
            )

            errorIndication, errorStatus, errorIndex, varBindTable = iterator

            if errorIndication:
                print(errorIndication)
                break

            elif errorStatus:
                print(
                    "{} at {}".format(
                        errorStatus.prettyPrint(),
                        errorIndex and varBinds[int(errorIndex) - 1][0] or "?",
                    )
                )
            else:
                for varBind in varBindTable:
                    print(" = ".join([x.prettyPrint() for x in varBind]))

            varBinds = varBindTable
            if is_end_of_mib(varBinds):
                break


asyncio.run(run([ObjectType(ObjectIdentity("SNMPv2-MIB", "sysDescr"))]))

Download script.