# 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.

See also: library reference.

Advertisement