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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#
# Asynchronous Command Generator
#
# Send a bunch of SNMP GET requests all at once using the following options:
#
# * with SNMPv1, community 'public' and
# with SNMPv2c, community 'public' and
# with SNMPv3, user 'usr-md5-des', MD5 auth and DES privacy
# * over IPv4/UDP and
# over IPv6/UDP
# * to an Agent at demo.snmplabs.com:161 and
# to an Agent at [::1]:161
# * for instances of SNMPv2-MIB::sysDescr.0 and
# SNMPv2-MIB::sysLocation.0 MIB objects
#
from pysnmp.entity import engine
from pysnmp.entity.rfc3413.oneliner import cmdgen
# List of targets in the followin format:
# ( ( authData, transportTarget, varNames ), ... )
targets = (
# 1-st target (SNMPv1 over IPv4/UDP)
( cmdgen.CommunityData('public', mpModel=0),
cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
( cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
# 2-nd target (SNMPv2c over IPv4/UDP)
( cmdgen.CommunityData('public'),
cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
( cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
# 3-nd target (SNMPv2c over IPv4/UDP) - same community and
# different transport address.
( cmdgen.CommunityData('public'),
cmdgen.UdpTransportTarget(('localhost', 161)),
( cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysContact', 0)),
cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysName', 0))) ),
# 4-nd target (SNMPv3 over IPv4/UDP)
( cmdgen.UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
( cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
# 5-th target (SNMPv3 over IPv6/UDP)
( cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
cmdgen.Udp6TransportTarget(('::1', 161)),
( cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
cmdgen.ObjectType(cmdgen.ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
# N-th target
# ...
)
# Wait for responses or errors
def cbFun(snmpEngine, sendRequestHandle, errorIndication,
errorStatus, errorIndex, varBinds, cbCtx):
(authData, transportTarget) = cbCtx
print('%s via %s' % (authData, transportTarget))
if errorIndication:
print(errorIndication)
return 1
if errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
return 1
for oid, val in varBinds:
if val is None:
print(oid.prettyPrint())
else:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))
snmpEngine = engine.SnmpEngine()
cmdGen = cmdgen.AsyncCommandGenerator()
# Submit GET requests
for authData, transportTarget, varNames in targets:
cmdGen.getCmd(
snmpEngine, authData, transportTarget, cmdgen.ContextData(), varNames,
# User-space callback function and its context
(cbFun, (authData, transportTarget)),
lookupNames=True, lookupValues=True
)
snmpEngine.transportDispatcher.runDispatcher()
|
