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我似乎无法让这个脚本工作。任何帮助是极大的赞赏。

这是我不断收到的错误：

./snmptester.py
Traceback (most recent call last):
  File "./snmptester.py", line 35, in <module>
    cmdgen.MibVariable(mib, oid),
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 370, in getCmd
    kwargs.get('contextName', null)
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 207, in getCmd
    self.makeReadVarBinds(varNames),
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 150, in makeReadVarBinds
    self.mibViewController, oidOnly=True
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/mibvar.py", line 160, in resolveWithMib
    self.__modName, self.__symName
  File "/usr/lib/python2.6/site-packages/pysnmp/smi/builder.py", line 298, in importSymbols
    'No symbol %s::%s at %s' % (modName, symName, self)
pysnmp.smi.error.SmiError: No symbol CISCO-REMOTE-ACCESS-MONITOR-MIB::ciscoRasMonitorMIBObjects.crasActivity.crasSessionTable.crasSessionEntry.crasLocalAddress at <pysnmp.smi.builder.MibBuilder instance at 0x7f5e50d51170>

这是我正在运行的脚本：

ip='192.168.1.1'
community='public'
mib = "CISCO-REMOTE-ACCESS-MONITOR-MIB"
oid = 'ciscoRasMonitorMIBObjects.crasActivity.crasSessionTable.crasSessionEntry.crasLocalAddress'

cmdGen = cmdgen.CommandGenerator()

errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
    cmdgen.CommunityData(community),
    cmdgen.UdpTransportTarget((ip, 161)),
    cmdgen.MibVariable(mib, oid),
    lookupNames=True, lookupValues=True
)

# Check for errors and print out results
if errorIndication:
    print(errorIndication)
elif errorStatus:
    print(errorStatus)
else:
    for string, val in varBinds:
        print('%s = %s' % (name.prettyPrint(), val.prettyPrint()))

我对 python 还是很陌生，所以我很难破译这个错误。

进行这些更改后，我现在收到此错误：

Traceback (most recent call last):
  File "./snmptester.py", line 32, in <module>
    lookupNames=True, lookupValues=True
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 475, in nextCmd
    varBindHead = [ univ.ObjectIdentifier(x[0]) for x in self.__asynCmdGen.makeReadVarBinds(varNames) ]
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 150, in makeReadVarBinds
    self.mibViewController, oidOnly=True
  File "/usr/lib/python2.6/site-packages/pysnmp/entity/rfc3413/oneliner/mibvar.py", line 80, in resolveWithMib
    mibViewController.mibBuilder.loadModules(*self.__modNamesToLoad)
  File "/usr/lib/python2.6/site-packages/pysnmp/smi/builder.py", line 251, in loadModules
    'MIB module \"%s\" load error: %s' % (modPath, sys.exc_info()[1])
pysnmp.smi.error.SmiError: MIB module "/usr/lib/python2.6/site-packages/pysnmp/smi/mibs/instances/__TRS-MIB.pyc" load error: No module TRS-MIB loaded at <pysnmp.smi.builder.MibBuilder instance at 0x7f18dbc36d88>

我尝试触摸 TRS-MIB 文件，但它仍然抱怨。有没有办法我需要构建 TRS-MIB 文件？

4

1 回答 1

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使用 pysnmp，MIB 具有扁平结构。因此，您可以通过其符号名称来寻址任何 MIB 对象，例如：

CISCO-REMOTE-ACCESS-MONITOR-MIB::ciscoRasMonitorMIBObjects
CISCO-REMOTE-ACCESS-MONITOR-MIB::crasActivity
CISCO-REMOTE-ACCESS-MONITOR-MIB::crasSessionTable
CISCO-REMOTE-ACCESS-MONITOR-MIB::crasSessionEntry
CISCO-REMOTE-ACCESS-MONITOR-MIB::crasLocalAddress

因此，我会将您的 oid 分配更改为：

oid = 'crasLocalAddress'

还要记住，由于您正在查询 SNMP 表对象，因此您必须提供其列实例 ID。例如：

cmdgen.MibVariable(mib, oid, (1,2,3,4))

这是一个普通的子 OID 或

cmdgen.MibVariable(mib, oid, '0.0.0.0')

这将由 pysnmp 解释并根据 SMI INDEX 子句规则转换为子 OID。

或者，您可以通过运行 nextCmd() 方法找出您的代理实际上具有的实例 ID 部分，而没有向 MibVariable() 提供实例信息，因此将返回整个列。

于 2013-07-12T13:27:42.477 回答