1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#
# Command Generator
#
# Send SNMP GET request using the following options:
#
# * with SNMPv2c, community 'public'
# * over IPv4/UDP
# * to an Agent at demo.snmplabs.com:161
# * for an OID in string form
# * use custom timeout and request retries values
#
# Transport timing settings (maximum number of request retries and
# individual request timeout in seconds) can be set on a per-target basis
# as explained by the code that follows.
#
# Keep in mind that while timeout value can be specified in fractions of a
# second, default pysnmp timer resolution is quite low (about 0.5 sec)
# so there's no much point in using timeouts which is not a multiple of 0.5
# Internal timer can be programmatically adjusted to finer resolution if needed.
#
# If retries value is set to 0, pysnmp will issue a single request. Even
# if no response arrives, there will be no retry. Likewise, retries=1
# means one initial request plus one retry.
#
from pysnmp.entity.rfc3413.oneliner.cmdgen import *
for errorIndication, \
errorStatus, errorIndex, \
varBinds in getCmd(SnmpEngine(),
CommunityData('public'),
UdpTransportTarget(
('demo.snmplabs.com', 161), timeout=1.5, retries=0
),
ContextData(),
ObjectType(ObjectIdentity('1.3.6.1.2.1.1.1.0'))):
# Check for errors and print out results
if errorIndication:
print(errorIndication)
else:
if 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 ]))
break
|
