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"""
SNMPv3 TRAP
+++++++++++
Send SNMP TRAP notification using the following options:
* SNMPv3
* with user 'usr-md5-des', auth: MD5, priv DES
* over IPv4/UDP
* using Twisted framework for network transport
* send TRAP notification
* to a Manager at 127.0.0.1:162
* with TRAP ID 'warmStart' specified as an OID
* include managed object information 1.3.6.1.2.1.1.5.0 = 'system name'
Functionally similar to:
| $ snmptrap -v3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 -e 8000000001020304 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.5.0 s 'my system'
"""#
from twisted.internet import reactor
from pysnmp.entity import engine, config
from pysnmp.carrier.twisted.dgram import udp
from pysnmp.entity.rfc3413 import context
from pysnmp.entity.rfc3413.twisted import ntforg
from pysnmp.proto import rfc1902
# Create SNMP engine instance with specific (and locally unique)
# SnmpEngineId -- it must also be known to the receiving party
# and configured at its VACM users table.
snmpEngine = engine.SnmpEngine(
snmpEngineID=rfc1902.OctetString(hexValue='8000000001020304')
)
# SNMPv3/USM setup
# Add USM user
config.addV3User(
snmpEngine, 'usr-md5-des',
config.usmHMACMD5AuthProtocol, 'authkey1',
config.usmDESPrivProtocol, 'privkey1'
)
config.addTargetParams(snmpEngine, 'my-creds', 'usr-md5-des', 'authPriv')
# Transport setup
# Setup transport endpoint and bind it with security settings yielding
# a target name
config.addTransport(
snmpEngine,
udp.domainName,
udp.UdpTwistedTransport().openClientMode()
)
config.addTargetAddr(
snmpEngine, 'my-nms',
udp.domainName, ('127.0.0.1', 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 (3), securityLevel
# and SecurityName
config.addContext(snmpEngine, '')
config.addVacmUser(snmpEngine, 3, 'usr-md5-des', 'authPriv', (), (), (1,3,6))
# Create Notification Originator App instance.
ntfOrg = ntforg.NotificationOriginator()
# Create default SNMP context where contextEngineId == SnmpEngineId
snmpContext = context.SnmpContext(snmpEngine)
# Build and submit notification message to dispatcher
ntfOrg.sendVarBinds(
snmpEngine,
# Notification targets
'my-notification',
# SNMP Context
snmpContext,
# contextName
'',
# notification name (SNMPv2-MIB::coldStart)
(1,3,6,1,6,3,1,1,5,1),
# notification objects instance index
None,
# additional var-binds: ( (oid, value), ... )
[ ((1,3,6,1,2,1,1,5,0), rfc1902.OctetString('system name')) ]
)
print('Notification is scheduled to be sent')
# Schedule Twisted mainloop shutdown shortly
reactor.callWhenRunning(lambda: reactor.stop())
# Run Twisted main loop
reactor.run()
|
