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"""
SNMPv3 INFORM, auth: MD5, privacy: none
+++++++++++++++++++++++++++++++++++++++
Send SNMP INFORM notification using the following options:
* SNMPv3
* with user 'usr-md5-none', auth: MD5, priv NONE
* over IPv4/UDP
* to a Manager at 127.0.0.1:162
* send INFORM notification
* 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:
| $ snmpinform -v3 -l authNoPriv -u usr-md5-none -A authkey1 demo.snmplabs.com 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.5.0 = 'system name'
"""#
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()
# Add USM user
config.addV3User(
snmpEngine, 'usr-md5-none',
config.usmHMACMD5AuthProtocol, 'authkey1'
)
config.addTargetParams(snmpEngine, 'my-creds', 'usr-md5-none', 'authNoPriv')
# Setup transport endpoint and bind it with security settings yielding
# a target name
config.addTransport(
snmpEngine,
udp.domainName,
udp.UdpSocketTransport().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', 'inform'
)
# Allow NOTIFY access to Agent's MIB by this SNMP model (3), securityLevel
# and SecurityName
config.addContext(snmpEngine, '')
config.addVacmUser(snmpEngine, 3, 'usr-md5-none', 'authNoPriv', (), (), (1,3,6))
# *** SNMP engine configuration is complete by this line ***
# Create Notification Originator App instance.
ntfOrg = ntforg.NotificationOriginator()
# Error/confirmation receiver
def cbFun(snmpEngine, sendRequestHandle, errorIndication,
errorStatus, errorIndex, varBinds, cbCtx):
print('Notification %s, status - %s' % (
sendRequestHandle, errorIndication and errorIndication or 'delivered'
)
)
# Build and submit notification message to dispatcher
sendRequestHandle = ntfOrg.sendVarBinds(
snmpEngine,
'my-notification', # notification targets
None, '', # contextEngineId, contextName
# var-binds: SNMPv2-MIB::coldStart, ...
[ ((1,3,6,1,6,3,1,1,5,1), v2c.ObjectIdentifier((1,3,6,1,6,3,1,1,5,1))),
((1,3,6,1,2,1,1,5,0), v2c.OctetString('system name')) ],
cbFun
)
print('Notification %s scheduled to be sent' % sendRequestHandle)
# Run I/O dispatcher which would send pending message and process response
snmpEngine.transportDispatcher.runDispatcher()
|
