# Advanced Notification Originator

## Multiple concurrent notifications

Send multiple SNMP notifications at once using the following options:

- SNMPv2c and SNMPv3

- with community name ‘public’

- over IPv4/UDP

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

    import asyncio
    from pysnmp.hlapi.asyncio import *

    @asyncio.coroutine
    def sendone(snmpEngine, hostname, notifyType):
        (errorIndication,
         errorStatus,
         errorIndex,
         varBinds) = yield from 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'))
            )
        )

        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]))

    snmpEngine = SnmpEngine()

    loop = asyncio.get_event_loop()
    loop.run_until_complete(
        asyncio.wait([sendone(snmpEngine, 'demo.snmplabs.com', 'trap'),
                      sendone(snmpEngine, 'demo.snmplabs.com', 'inform')])
    )

`Download` script.

See also: library reference.