Transport tweaks¶
SNMPv2c¶
Send SNMP GET request using the following options:
- with SNMPv2c, community ‘public’
- over IPv4/UDP with non-default timeout and no retries
- to an Agent at demo.snmplabs.com:161
- for two instances of SNMPv2-MIB::sysDescr.0 MIB object,
- based on Twisted I/O framework
Functionally similar to:
$ snmpget -v2c -c public -r 0 -t 2 demo.snmplabs.com SNMPv2-MIB::sysDescr.0
from twisted.internet.task import react
from pysnmp.hlapi.v3arch.twisted import *
def success(args, hostname):
errorStatus, errorIndex, varBinds = args
if errorStatus:
print('%s: %s at %s' % (hostname,
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))
else:
for varBind in varBinds:
print(' = '.join([x.prettyPrint() for x in varBind]))
def failure(errorIndication, hostname):
print('%s failure: %s' % (hostname, errorIndication))
# noinspection PyUnusedLocal
def getSysDescr(reactor, hostname):
snmpEngine = SnmpEngine()
deferred = getCmd(
snmpEngine,
CommunityData('public'),
UdpTransportTarget((hostname, 161), timeout=2.0, retries=0),
ContextData(),
ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0))
)
deferred.addCallback(success, hostname).addErrback(failure, hostname)
return deferred
react(getSysDescr, ['demo.snmplabs.com'])
Download
script.
See also: library reference.