# Advanced Notification Originator

## INFORM with custom ContextName

Send SNMP notification using the following options:

- SNMPv3

- with user ‘usr-md5-none’, MD5 auth, no priv

- send INFORM notification

- in behalf of contextEngineId = SnmpEngineId, contextName ‘my-context’

- over IPv4/UDP

- with TRAP ID ‘warmStart’ specified as a string OID

Sending SNMPv3 Notification in behalf of non-default ContextName requires having a collection of Managed Objects registered under the ContextName being used.

Functionally similar to:

$ snmpinform -v3 -l authNoPriv -u usr-md5-none -A authkey1 -n my-context demo.snmplabs.com 12345 0.3.6.1.6.3.1.1.5.2

    from pysnmp.hlapi import *

    errorIndication, errorStatus, errorIndex, varBinds = next(
        sendNotification(SnmpEngine(),
                         UsmUserData('usr-md5-none', 'authkey1'),
                         UdpTransportTarget(('demo.snmplabs.com', 162)),
                         ContextData(contextName='my-context'),
                         'inform',
                         NotificationType(ObjectIdentity('1.3.6.1.6.3.1.1.5.2')))
    )

    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.

## INFORM with custom ContextEngineId

Send SNMP notification using the following options:

- SNMPv3

- with user ‘usr-md5-none’, MD5 auth, no priv

- send INFORM notification

- in behalf of contextEngineId 0x8000000004030201, contextName ‘’

- over IPv4/UDP

- with TRAP ID ‘warmStart’ specified as a string OID

Sending SNMPv3 Notification in behalf of non-default ContextEngineId requires having a collection of Managed Objects registered under the ContextEngineId being used.

Functionally similar to:

$ snmpinform -v3 -l authNoPriv -u usr-md5-none -A authkey1 -E 0x8000000004030201 demo.snmplabs.com 12345 1.3.6.1.6.3.1.1.5.2

    from pysnmp.hlapi import *

    errorIndication, errorStatus, errorIndex, varBinds = next(
        sendNotification(SnmpEngine(),
                         UsmUserData('usr-md5-none', 'authkey1'),
                         UdpTransportTarget(('demo.snmplabs.com', 162)),
                         ContextData(OctetString(hexValue='8000000004030201')),
                         'inform',
                         NotificationType(ObjectIdentity('1.3.6.1.6.3.1.1.5.2')))
    )

    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.

See also: library reference.