# 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.