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 ‘linkUp’ specified as a MIB symbol
  • include values for managed objects implicitly added to notification (via NOTIFICATION-TYPE->OBJECTS)

Functionally similar to:

$ snmptrap -v2c -c public demo.snmplabs.com 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.2.2.1.1.123 i 123 1.3.6.1.2.1.2.2.1.7.123 i 1 1.3.6.1.2.1.2.2.1.8.123 i 1
from pysnmp.hlapi import *

errorIndication, errorStatus, errorIndex, varBinds = next(
    sendNotification(
        SnmpEngine(),
        CommunityData('public'),
        UdpTransportTarget(('demo.snmplabs.com', 162)),
        ContextData(),
        'trap',
        NotificationType(
            ObjectIdentity('IF-MIB', 'linkUp'),
                           instanceIndex=(123,),
                           objects={('IF-MIB', 'ifIndex'): 123,
                                    ('IF-MIB', 'ifAdminStatus'): 'up',
                                    ('IF-MIB', 'ifOperStatus'): 'up'}
        )
    )
)

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.

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.