Common notifications

SNMPv2c TRAP via NOTIFICATION-TYPE

Initialize TRAP message contents from variables specified in NOTIFICATION-TYPE SMI macro.

  • SNMPv2c
  • with community name ‘public’
  • over IPv4/UDP
  • send TRAP notification
  • with TRAP ID ‘coldStart’ specified as a MIB symbol
  • include managed object information specified as a MIB symbol

Functionally similar to:

$ snmptrap -v2c -c public demo.snmplabs.com 12345 1.3.6.1.4.1.20408.4.1.1.2
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(SnmpEngine(),
                     CommunityData('public'),
                     UdpTransportTarget(('demo.snmplabs.com', 162)),
                     ContextData(),
                     'trap',
                     NotificationType(
                         ObjectIdentity('SNMPv2-MIB', 'coldStart')
                     )
    )
)

if errorIndication:
    print(errorIndication)

Download script.

INFORM, auth: MD5 privacy: DES

Send SNMP INFORM notification using the following options:

  • SNMPv3
  • with user ‘usr-md5-des’, auth: MD5, priv DES
  • over IPv4/UDP
  • send INFORM notification
  • with TRAP ID ‘warmStart’ specified as a string OID
  • include managed object information 1.3.6.1.2.1.1.5.0 = ‘system name’

Functionally similar to:

$ snmpinform -v3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 demo.snmplabs.com 12345 1.3.6.1.4.1.20408.4.1.1.2 1.3.6.1.2.1.1.1.0 s “my system”
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(SnmpEngine(),
                     UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
                     UdpTransportTarget(('demo.snmplabs.com', 162)),
                     ContextData(),
                     'inform',
                     NotificationType(
                         ObjectIdentity('1.3.6.1.6.3.1.1.5.2')
                     ).addVarBinds(
                         ObjectType(ObjectIdentity('1.3.6.1.2.1.1.5.0'),
                                    'system name')
                     ))
)

if errorIndication:
    print(errorIndication)
elif errorStatus:
    print('%s at %s' % (
            errorStatus.prettyPrint(),
            errorIndex and varBinds[int(errorIndex)-1][0] or '?'
        )
    )
else:
    for varBind in varBinds:
        print(' = '.join([ x.prettyPrint() for x in varBind ]))

Download script.

SNMPv1 TRAP with defaults

Send SNMPv1 TRAP through unified SNMPv3 message processing framework using the following options:

  • SNMPv1
  • with community name ‘public’
  • over IPv4/UDP
  • send TRAP notification
  • with Generic Trap #1 (warmStart) and Specific Trap 0
  • with default Uptime
  • with default Agent Address
  • with Enterprise OID 1.3.6.1.4.1.20408.4.1.1.2
  • include managed object information ‘1.3.6.1.2.1.1.1.0’ = ‘my system’

Functionally similar to:

$ snmptrap -v1 -c public demo.snmplabs.com 1.3.6.1.4.1.20408.4.1.1.2 0.0.0.0 1 0 0 1.3.6.1.2.1.1.1.0 s “my system”
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(SnmpEngine(),
                     CommunityData('public', mpModel=0),
                     UdpTransportTarget(('demo.snmplabs.com', 162)),
                     ContextData(),
                     'trap',
                     NotificationType(
                         ObjectIdentity('1.3.6.1.6.3.1.1.5.2')
                     ).addVarBinds(
                         ('1.3.6.1.6.3.1.1.4.3.0', '1.3.6.1.4.1.20408.4.1.1.2'),
                         ('1.3.6.1.2.1.1.1.0', OctetString('my system'))
                     )
    )
)
if errorIndication:
    print(errorIndication)

Download script.

SNMPv2c TRAP via NOTIFICATION-TYPE

Initialize TRAP message contents from variables specified in NOTIFICATION-TYPE SMI macro.

  • SNMPv2c
  • with community name ‘public’
  • over IPv4/UDP
  • send TRAP notification
  • with TRAP ID ‘coldStart’ specified as a MIB symbol
  • include managed object information specified as a MIB symbol

Functionally similar to:

$ snmptrap -v2c -c public demo.snmplabs.com 12345 1.3.6.1.4.1.20408.4.1.1.2
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(SnmpEngine(),
                     CommunityData('public'),
                     UdpTransportTarget(('demo.snmplabs.com', 162)),
                     ContextData(),
                     'trap',
                     NotificationType(
                         ObjectIdentity('SNMPv2-MIB', 'coldStart')
                     )
    )
)

if errorIndication:
    print(errorIndication)

Download script.

SNMPv3 TRAP: auth SHA, privacy: AES128

Send SNMP notification using the following options:

  • SNMPv3
  • with authoritative snmpEngineId = 0x8000000001020304 (USM must be configured at the Receiver accordingly)
  • with user ‘usr-sha-aes128’, auth: SHA, priv: AES128
  • over IPv4/UDP
  • send TRAP notification
  • with TRAP ID ‘authenticationFailure’ specified as a MIB symbol
  • do not include any additional managed object information

SNMPv3 TRAPs requires pre-sharing the Notification Originator’s value of SnmpEngineId with Notification Receiver. To facilitate that we will use static (e.g. not autogenerated) version of snmpEngineId.

Functionally similar to:

$ snmptrap -v3 -e 8000000001020304 -l authPriv -u usr-sha-aes -A authkey1 -X privkey1 -a SHA -x AES demo.snmplabs.com 12345 1.3.6.1.4.1.20408.4.1.1.2 1.3.6.1.2.1.1.1.0 s “my system”
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(SnmpEngine(OctetString(hexValue='8000000001020304')),
                     UsmUserData('usr-sha-aes128', 'authkey1', 'privkey1',
                                 authProtocol=usmHMACSHAAuthProtocol,
                                 privProtocol=usmAesCfb128Protocol),
                     UdpTransportTarget(('demo.snmplabs.com', 162)),
                     ContextData(),
                     'trap',
                     NotificationType(
                         ObjectIdentity('SNMPv2-MIB', 'authenticationFailure')
                     )
    )
)
if errorIndication:
    print(errorIndication)

Download script.

See also: library reference.