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.
