# Advanced Notification Originator

## Multiple concurrent notifications

Send multiple SNMP notifications at once using the following options:

- SNMPv2c

- with community name ‘public’

- over IPv4/UDP

- send TRAP and INFORM notification

- to multiple Managers

- with TRAP ID ‘coldStart’ specified as a MIB symbol

- include managed object information specified as var-bind objects pair

Here we tag each SNMP-COMMUNITY-MIB::snmpCommunityTable row with the same tag as SNMP-TARGET-MIB::snmpTargetAddrTable row what leads to excessive tables information.

Functionally similar to:

$ snmptrap -v2c -c public demo.snmplabs.com 12345 1.3.6.1.6.3.1.1.5.2
$ snmpinform -v2c -c public demo.snmplabs.com 12345 1.3.6.1.6.3.1.1.5.2

    from twisted.internet.defer import DeferredList
    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 sendone(reactor, snmpEngine, hostname, notifyType):
        d = sendNotification(
            snmpEngine,
            CommunityData('public', tag=hostname),
            UdpTransportTarget((hostname, 162), tagList=hostname),
            ContextData(),
            notifyType,
            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

    def sendall(reactor, destinations):
        snmpEngine = SnmpEngine()

        return DeferredList(
            [sendone(reactor, snmpEngine, hostname, notifyType)
             for hostname, notifyType in destinations]
        )

    react(sendall, [[('demo.snmplabs.com', 'trap'),
                     ('demo.snmplabs.com', 'inform')]])

`Download` script.

See also: library reference.