Walking operations¶
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 asyncio I/O framework
Functionally similar to:
$ snmpbulkwalk -v3 -lnoAuthNoPriv -u usr-none-none -Cn0 -Cr50
demo.snmplabs.com SNMPv2-MIB::system
import asyncio
from pysnmp.hlapi.v3arch.asyncio import *
@asyncio.coroutine
def run(varBinds):
snmpEngine = SnmpEngine()
while True:
iterator = bulkCmd(
snmpEngine,
UsmUserData('usr-none-none'),
UdpTransportTarget(('demo.snmplabs.com', 161)),
ContextData(),
0, 50,
*varBinds
)
errorIndication, errorStatus, errorIndex, varBindTable = yield from iterator
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 = asyncio.get_event_loop()
loop.run_until_complete(
run([ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr'))])
)
Download
script.
See also: library reference.