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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 trollius I/O framework
Functionally similar to:
| $ snmpbulkwalk -v3 -lnoAuthNoPriv -u usr-none-none -Cn0 -Cr50 \
| demo.snmplabs.com SNMPv2-MIB::system
"""#
import trollius
from pysnmp.hlapi.asyncio import *
@trollius.coroutine
def run(varBinds):
snmpEngine = SnmpEngine()
while True:
errorIndication, errorStatus, errorIndex, \
varBindTable = yield trollius.From(
bulkCmd(snmpEngine,
UsmUserData('usr-none-none'),
UdpTransportTarget(('demo.snmplabs.com', 161)),
ContextData(),
0, 50,
*varBinds)
)
if errorIndication:
print(errorIndication)
break
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
else:
for varBindRow in varBindTable:
for varBind in varBindRow:
print(' = '.join([ x.prettyPrint() for x in varBind ]))
varBinds = varBindTable[-1]
if isEndOfMib(varBinds):
break
snmpEngine.transportDispatcher.closeDispatcher()
loop = trollius.get_event_loop()
loop.run_until_complete(
run([ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr'))])
)
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