GETNEXT command

pysnmp.hlapi.v3arch.asyncio.nextCmd(snmpEngine, authData, transportTarget, contextData, *varBinds, **options)

Creates a generator to perform SNMP GETNEXT query.

When iterator gets advanced by asyncio main loop, SNMP GETNEXT request is send (RFC 1905#section-4.2.2). The iterator yields asyncio.Future which gets done whenever response arrives or error occurs.

  • snmpEngine (SnmpEngine) – Class instance representing SNMP engine.
  • authData (CommunityData or UsmUserData) – Class instance representing SNMP credentials.
  • transportTarget (UdpTransportTarget or Udp6TransportTarget) – Class instance representing transport type along with SNMP peer address.
  • contextData (ContextData) – Class instance representing SNMP ContextEngineId and ContextName values.
  • *varBinds (ObjectType) – One or more class instances representing MIB variables to place into SNMP request.
Other Parameters:


Request options:

  • lookupMib - load MIB and resolve response MIB variables at the cost of slightly reduced performance. Default is True.
  • errorIndication (str) – True value indicates SNMP engine error.
  • errorStatus (str) – True value indicates SNMP PDU error.
  • errorIndex (int) – Non-zero value refers to varBinds[errorIndex-1]
  • varBinds (tuple) – A sequence of sequences (e.g. 2-D array) of ObjectType class instances representing a table of MIB variables returned in SNMP response. Inner sequences represent table rows and ordered exactly the same as varBinds in request. Response to GETNEXT always contain a single row.

PySnmpError – Or its derivative indicating that an error occurred while performing SNMP operation.


>>> import asyncio
>>> from pysnmp.hlapi.asyncio import *
>>> @asyncio.coroutine
... def run():
...     errorIndication, errorStatus, errorIndex, varBinds = yield from nextCmd(
...         SnmpEngine(),
...         CommunityData('public'),
...         UdpTransportTarget(('', 161)),
...         ContextData(),
...         ObjectType(ObjectIdentity('SNMPv2-MIB', 'system'))
...     )
...     print(errorIndication, errorStatus, errorIndex, varBinds)
>>> asyncio.get_event_loop().run_until_complete(run())
(None, 0, 0, [[ObjectType(ObjectIdentity(''), DisplayString('Linux i386'))]])