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.v3arch.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):

    deferred = 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')
        ).loadMibs(
            'SNMPv2-MIB'
        ).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'))
        )
    )

    deferred.addCallback(success, hostname).addErrback(failure, hostname)

    return deferred


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.