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|
"""
Serving multiple network interfaces
+++++++++++++++++++++++++++++++++++
Receive SNMP TRAP/INFORM messages with the following options:
* SNMPv1/SNMPv2c
* with SNMP community "public"
* over IPv4/UDP, listening at 127.0.0.1:162
over IPv4/UDP, listening at 127.0.0.1:2162
* print received data on stdout
Either of the following Net-SNMP commands will send notifications to this
receiver:
| $ snmptrap -v2c -c public 127.0.0.1:162 123 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.5.0 s test
| $ snmpinform -v2c -c public 127.0.0.1:2162 123 1.3.6.1.6.3.1.1.5.1
""" #
from pysnmp.entity import engine, config
from pysnmp.carrier.asyncio.dgram import udp
from pysnmp.entity.rfc3413 import ntfrcv
# Create SNMP engine with autogenernated engineID and pre-bound
# to socket transport dispatcher
snmpEngine = engine.SnmpEngine()
# Transport setup
# UDP over IPv4, first listening interface/port
config.add_transport(
snmpEngine,
udp.DOMAIN_NAME + (1,),
udp.UdpTransport().open_server_mode(("127.0.0.1", 162)),
)
# UDP over IPv4, second listening interface/port
config.add_transport(
snmpEngine,
udp.DOMAIN_NAME + (2,),
udp.UdpTransport().open_server_mode(("127.0.0.1", 2162)),
)
# SNMPv1/2c setup
# SecurityName <-> CommunityName mapping
config.add_v1_system(snmpEngine, "my-area", "public")
# Callback function for receiving notifications
# noinspection PyUnusedLocal,PyUnusedLocal,PyUnusedLocal
def cbFun(snmpEngine, stateReference, contextEngineId, contextName, varBinds, cbCtx):
print(
'Notification from ContextEngineId "{}", ContextName "{}"'.format(
contextEngineId.prettyPrint(), contextName.prettyPrint()
)
)
for name, val in varBinds:
print(f"{name.prettyPrint()} = {val.prettyPrint()}")
# Register SNMP Application at the SNMP engine
ntfrcv.NotificationReceiver(snmpEngine, cbFun)
snmpEngine.transport_dispatcher.job_started(1) # this job would never finish
# Run I/O dispatcher which would receive queries and send confirmations
try:
snmpEngine.open_dispatcher()
except:
snmpEngine.close_dispatcher()
raise
|
