# Common notifications

## SNMPv1 TRAP with defaults

Send SNMPv1 TRAP through unified SNMPv3 message processing framework using the following options:

- SNMPv1

- with community name ‘public’

- over IPv4/UDP

- send TRAP notification

- with Generic Trap #1 (warmStart) and Specific Trap 0

- with default Uptime

- with default Agent Address

- with Enterprise OID 1.3.6.1.4.1.20408.4.1.1.2

- include managed object information ‘1.3.6.1.2.1.1.1.0’ = ‘my system’

Functionally similar to:

$ snmptrap -v1 -c public demo.snmplabs.com 1.3.6.1.4.1.20408.4.1.1.2 0.0.0.0 1 0 0 1.3.6.1.2.1.1.1.0 s “my system”

    from twisted.internet.task import react
    from pysnmp.hlapi.twisted import *

    def success(args, hostname):
        (errorStatus, errorIndex, varBinds) = args

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

    def failure(errorIndication, hostname):
        print('%s failure: %s' % (hostname, errorIndication))

    # noinspection PyUnusedLocal
    def run(reactor, hostname):
        d = sendNotification(
            SnmpEngine(),
            CommunityData('public', mpModel=0),
            UdpTransportTarget((hostname, 162)),
            ContextData(),
            'trap',
            NotificationType(
                ObjectIdentity('1.3.6.1.6.3.1.1.5.2')
            ).addVarBinds(
                ('1.3.6.1.6.3.1.1.4.3.0', '1.3.6.1.4.1.20408.4.1.1.2'),
                ('1.3.6.1.2.1.1.1.0', OctetString('my system'))
            )
        )
        d.addCallback(success, hostname).addErrback(failure, hostname)
        return d

    react(run, ['demo.snmplabs.com'])

`Download` script.

## SNMPv2c TRAP via Twisted inline callbacks

Send SNMPv2c TRAP through unified SNMPv3 message processing framework using the following options:

- SNMPv2c

- with community name ‘public’

- over IPv4/UDP

- send TRAP notification

- with Generic Trap #1 (warmStart) and Specific Trap 0

- include managed object information ‘1.3.6.1.2.1.1.1.0’ = ‘my system’

Functionally similar to:

$ snmptrap -v2c -c public demo.snmplabs.com 12345 1.3.6.1.6.3.1.1.5.2 1.3.6.1.2.1.1.1.0 s “Hello from Twisted”

    from twisted.internet.task import react, defer
    from pysnmp.hlapi.twisted import *

    @defer.inlineCallbacks
    def sendtrap(reactor, snmpEngine, hostname):

        yield sendNotification(
            snmpEngine,
            CommunityData('public', mpModel=0),
            UdpTransportTarget((hostname, 162)),
            ContextData(),
            'trap',
            NotificationType(
                ObjectIdentity('1.3.6.1.6.3.1.1.5.2')
            ).addVarBinds(
                ObjectType(ObjectIdentity('1.3.6.1.2.1.1.1.0'), OctetString('Hello from Twisted'))
            )
        )

    # Preserve SnmpEngine instance across [potentially] multiple calls to safe on initialization
    snmpEngine = SnmpEngine()

    react(sendtrap, [snmpEngine, 'demo.snmplabs.com'])

`Download` script.

See also: library reference.