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"""
SET string and integer scalars
++++++++++++++++++++++++++++++
Send SNMP SET request with the following options:
* with SNMPv1 with community name 'private'
* over IPv4/UDP
* to an Agent at 127.0.0.1:161
* for OIDs in tuple form and an integer and string-typed values
This script performs similar to the following Net-SNMP command:
| $ snmpset -v1 -c private -ObentU 127.0.0.1:161 1.3.6.1.2.1.1.9.1.3.1 s 'my value' 1.3.6.1.2.1.1.9.1.4.1 t 123
"""#
from pysnmp.entity import engine, config
from pysnmp.carrier.asyncore.dgram import udp
from pysnmp.entity.rfc3413 import cmdgen
from pysnmp.proto import rfc1902
# Create SNMP engine instance
snmpEngine = engine.SnmpEngine()
#
# SNMPv1 setup
#
# SecurityName <-> CommunityName mapping
config.addV1System(snmpEngine, "my-area", "private")
# Specify security settings per SecurityName (SNMPv1 - 0, SNMPv2c - 1)
config.addTargetParams(snmpEngine, "my-creds", "my-area", "noAuthNoPriv", 0)
#
# Setup transport endpoint and bind it with security settings yielding
# a target name
#
# UDP/IPv4
config.addTransport(
snmpEngine, udp.domainName, udp.UdpSocketTransport().openClientMode()
)
config.addTargetAddr(
snmpEngine, "my-router", udp.domainName, ("127.0.0.1", 161), "my-creds"
)
# Error/response receiver
# noinspection PyUnusedLocal,PyUnusedLocal,PyUnusedLocal
def cbFun(
snmpEngine,
sendRequestHandle,
errorIndication,
errorStatus,
errorIndex,
varBinds,
cbCtx,
):
if errorIndication:
print(errorIndication)
# SNMPv1 response may contain noSuchName error *and* SNMPv2c exception,
# so we ignore noSuchName error here
elif errorStatus and errorStatus != 2:
print(
"{} at {}".format(
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex) - 1][0] or "?",
)
)
else:
for oid, val in varBinds:
print(f"{oid.prettyPrint()} = {val.prettyPrint()}")
# Prepare and send a request message
cmdgen.SetCommandGenerator().sendVarBinds(
snmpEngine,
"my-router",
None,
"", # contextEngineId, contextName
[
((1, 3, 6, 1, 2, 1, 1, 9, 1, 3, 1), rfc1902.OctetString("my value")),
((1, 3, 6, 1, 2, 1, 1, 9, 1, 4, 1), rfc1902.TimeTicks(123)),
],
cbFun,
)
# Run I/O dispatcher which would send pending queries and process responses
snmpEngine.transportDispatcher.runDispatcher()
|
