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"""
Bulk walk MIB
+++++++++++++
Send a series of SNMP GETBULK requests using the following options:
* with SNMPv3, user 'usr-none-none', no authentication, no privacy
* over IPv4/UDP
* to an Agent at demo.snmplabs.com:161
* for all OIDs past SNMPv2-MIB::system
* run till end-of-mib condition is reported by Agent
* based on Twisted I/O framework
Functionally similar to:
| $ snmpbulkwalk -v3 -lnoAuthNoPriv -u usr-none-none -Cn0 -Cr50 demo.snmplabs.com SNMPv2-MIB::system
"""#
from twisted.internet.task import react
from pysnmp.hlapi.twisted import *
def success(args, reactor, snmpEngine):
(errorStatus, errorIndex, varBindTable) = args
if errorStatus:
print('%s: %s at %s' % (hostname,
errorStatus.prettyPrint(),
errorIndex and varBindTable[0][int(errorIndex) - 1][0] or '?'))
else:
for varBindRow in varBindTable:
for varBind in varBindRow:
print(' = '.join([x.prettyPrint() for x in varBind]))
if not isEndOfMib(varBindTable[-1]):
return getbulk(reactor, snmpEngine, *varBindTable[-1])
def failure(errorIndication):
print(errorIndication)
def getbulk(reactor, snmpEngine, varBinds):
d = bulkCmd(snmpEngine,
UsmUserData('usr-none-none'),
UdpTransportTarget(('demo.snmplabs.com', 161)),
ContextData(),
0, 50,
varBinds)
d.addCallback(success, reactor, snmpEngine).addErrback(failure)
return d
react(getbulk, [SnmpEngine(), ObjectType(ObjectIdentity('SNMPv2-MIB', 'system'))])
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