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"""
Walk Agent, limit number of packets
+++++++++++++++++++++++++++++++++++
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 OR
maxCalls == 10 request-response interactions occur
Functionally similar to:
| $ snmpbulkwalk -v3 -lnoAuthNoPriv -u usr-none-none -Cn0 -Cr50 demo.snmplabs.com SNMPv2-MIB::system
"""#
from pysnmp.hlapi import *
for (errorIndication,
errorStatus,
errorIndex,
varBinds) in bulkCmd(SnmpEngine(),
UsmUserData('usr-none-none'),
UdpTransportTarget(('demo.snmplabs.com', 161)),
ContextData(),
0, 50,
ObjectType(ObjectIdentity('SNMPv2-MIB', 'system')),
maxCalls=10):
if errorIndication:
print(errorIndication)
break
elif errorStatus:
print('%s at %s' % (errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))
break
else:
for varBind in varBinds:
print(' = '.join([x.prettyPrint() for x in varBind]))
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