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"""
Notification over multiple network protocols
++++++++++++++++++++++++++++++++++++++++++++
Send SNMP INFORM notifications to multiple Managers over different
network protocols:
* SNMPv2c
* with community name 'public'
* over IPv4/UDP and UDP/IPv6
* send TRAP notification
* to two Managers through different network transports
* with TRAP ID 'coldStart' specified as an OID
* include managed objects information:
1.3.6.1.2.1.1.1.0 = 'Example Notificator'
1.3.6.1.2.1.1.5.0 = 'Notificator Example'
Functionally similar to:
| $ snmptrap -v2c -c public udp:127.0.0.1 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.1.0 s 'Example notification' 1.3.6.1.2.1.1.5.0 s 'Notificator Example'
and
| $ snmptrap -v2c -c public udp6:[::1] 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.1.0 s 'Example notification' 1.3.6.1.2.1.1.5.0 s 'Notificator Example'
"""#
from pysnmp.entity import engine, config
from pysnmp.carrier.asyncore.dgram import udp, udp6
from pysnmp.entity.rfc3413 import ntforg
from pysnmp.proto.api import v2c
# Create SNMP engine instance
snmpEngine = engine.SnmpEngine()
# SecurityName <-> CommunityName mapping
config.addV1System(snmpEngine, 'my-area', 'public', transportTag='all-my-managers')
# Specify security settings per SecurityName (SNMPv2c -> 1)
config.addTargetParams(snmpEngine, 'my-creds', 'my-area', 'noAuthNoPriv', 1)
# Setup transport endpoints and bind it with security settings yielding
# a target name:
# UDP/IPv4
config.addTransport(
snmpEngine,
udp.domainName,
udp.UdpSocketTransport().openClientMode()
)
config.addTargetAddr(
snmpEngine, 'my-nms-1',
udp.domainName, ('127.0.0.1', 162),
'my-creds',
tagList='all-my-managers'
)
# UDP/IPv6
config.addTransport(
snmpEngine,
udp6.domainName,
udp6.Udp6SocketTransport().openClientMode()
)
config.addTargetAddr(
snmpEngine, 'my-nms-2',
udp6.domainName, ('::1', 162),
'my-creds',
tagList='all-my-managers'
)
# Specify what kind of notification should be sent (TRAP or INFORM),
# to what targets (chosen by tag) and what filter should apply to
# the set of targets (selected by tag)
config.addNotificationTarget(
snmpEngine, 'my-notification', 'my-filter', 'all-my-managers', 'trap'
)
# Allow NOTIFY access to Agent's MIB by this SNMP model (2), securityLevel
# and SecurityName
config.addContext(snmpEngine, '')
config.addVacmUser(snmpEngine, 2, 'my-area', 'noAuthNoPriv', (), (), (1,3,6))
# *** SNMP engine configuration is complete by this line ***
# Create Notification Originator App instance.
ntfOrg = ntforg.NotificationOriginator()
# Build and submit notification message to dispatcher
ntfOrg.sendVarBinds(
snmpEngine,
# Notification targets
'my-notification', # notification targets
None, '', # contextEngineId, contextName
# var-binds
[
# SNMPv2-SMI::snmpTrapOID.0 = SNMPv2-MIB::coldStart
((1,3,6,1,6,3,1,1,4,1,0), v2c.ObjectIdentifier((1,3,6,1,6,3,1,1,5,1))),
# additional var-binds: ( (oid, value), ... )
((1,3,6,1,2,1,1,1,0), v2c.OctetString('Example Notificator')),
((1,3,6,1,2,1,1,5,0), v2c.OctetString('Notificator Example'))
]
)
print('Notification is scheduled to be sent')
# Run I/O dispatcher which would send pending message and process response
snmpEngine.transportDispatcher.runDispatcher()
|
