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"""
Send crafted TRAP PDU
+++++++++++++++++++++
Initialize TRAP PDU and pass it over to unified SNMPv3 message processing
framework for further treatment.
* SNMPv2c
* with community name 'public'
* over IPv4/UDP
* send TRAP notification
* initialize TRAP PDU with the following var-binds:
1.3.6.1.2.1.1.3.0 = 123
1.3.6.1.6.3.1.1.4.1.0 = 1.3.6.1.6.3.1.1.5.1
Functionally similar to:
| $ snmptrap -v2c -c public demo.pysnmp.com 0 1.3.6.1.6.3.1.1.5.1
"""#
from pysnmp.entity import engine, config
from pysnmp.carrier.asyncore.dgram import udp
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")
# Specify security settings per SecurityName (SNMPv2c -> 1)
config.addTargetParams(snmpEngine, "my-creds", "my-area", "noAuthNoPriv", 1)
# Setup transport endpoint and bind it with security settings yielding
# a target name
config.addTransport(
snmpEngine, udp.domainName, udp.UdpSocketTransport().openClientMode()
)
# Create named target
config.addTargetAddr(
snmpEngine, "my-nms", udp.domainName, ("127.0.0.1", 162), "my-creds"
)
# *** SNMP engine configuration is complete by this line ***
# Create SNMP v2c TRAP PDU with defaults
trapPDU = v2c.TrapPDU()
v2c.apiTrapPDU.setDefaults(trapPDU)
# Set custom var-binds to TRAP PDU
v2c.apiTrapPDU.setVarBinds(
trapPDU,
[
# sysUpTime
(v2c.ObjectIdentifier("1.3.6.1.2.1.1.3.0"), v2c.TimeTicks(123)),
# snmpTrapPDU
(
(1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0),
v2c.ObjectIdentifier((1, 3, 6, 1, 6, 3, 1, 1, 5, 1)),
),
],
)
# Create Notification Originator App instance.
ntfOrg = ntforg.NotificationOriginator()
# Error/confirmation receiver
# noinspection PyUnusedLocal,PyUnusedLocal,PyUnusedLocal,PyUnusedLocal,PyUnusedLocal
def cbFun(
snmpEngine,
sendRequestHandle,
errorIndication,
errorStatus,
errorIndex,
varBinds,
cbCtx,
):
print(
"Notification {}, status - {}".format(
sendRequestHandle, errorIndication and errorIndication or "delivered"
)
)
# Build and submit notification message to dispatcher
ntfOrg.sendPdu(
snmpEngine,
# Notification targets
"my-nms", # target address
None,
"", # contextEngineId, contextName
trapPDU,
cbFun,
)
print("Notification is scheduled to be sent")
# Run I/O dispatcher which would send pending message and process response
snmpEngine.transportDispatcher.runDispatcher()
|
