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"""
Sequence Of GET's
+++++++++++++++++
Send two SNMP GET requests in a row using the following options:
* with SNMPv3, user 'usr-md5-none', MD5 authentication, no privacy
* over IPv4/UDP
* to an Agent at demo.snmplabs.com:161
* for IF-MIB::ifInOctets.1 and IF-MIB::ifOutOctets.1 MIB objects
Use a queue of MIB objects to query.
The next() call is used to forward Python iterator to the position where it
could consume input
Functionally similar to:
| $ snmpget -v3 -l authNoPriv -u usr-md5-none -A authkey1 demo.snmplabs.com \
| IF-MIB::ifInOctets.1
"""#
from pysnmp.entity.rfc3413.oneliner.cmdgen import *
queue = [ [ ObjectType(ObjectIdentity('IF-MIB', 'ifInOctets', 1)) ],
[ ObjectType(ObjectIdentity('IF-MIB', 'ifOutOctets', 1)) ] ]
iter = getCmd(SnmpEngine(),
UsmUserData('usr-md5-none', 'authkey1'),
UdpTransportTarget(('demo.snmplabs.com', 161)),
ContextData())
next(iter)
while queue:
errorIndication, errorStatus, errorIndex, varBinds = iter.send(queue.pop())
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
else:
for varBind in varBinds:
print(' = '.join([ x.prettyPrint() for x in varBind ]))
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