将pysnmp数字oid输出转换为符号名称

Question

我编写了一个脚本（以下）来测试我在一个应用程序中如何使用pysnmp。我需要能够MIB-散步名称的网络元素，如ifDescr，和我的输出需要引用我查询相同的名称...

from pysnmp.smi import builder, view, error 
from pysnmp.entity.rfc3413.oneliner import cmdgen 

cmdGen = cmdgen.CommandGenerator() 
mibBuilder = builder.MibBuilder() 
mibPath = mibBuilder.getMibPath() + ('/opt/python/Models/Network/MIBs',) 
mibBuilder.setMibPath(*mibPath) 
mibBuilder.loadModules(
    'RFC-1213', 
    ) 
mibView = view.MibViewController(mibBuilder) 
errorIndication, errorStatus, errorIndex, \ 
       varBindTable = cmdGen.nextCmd(
    # SNMP v2 
    cmdgen.CommunityData('test-agent', 'public'), 
    # Transport 
    cmdgen.UdpTransportTarget(('192.168.56.131', 161)), 
    (('', 'ifDescr'),), 
    ) 

print varBindTable 

问题

当我执行该代码，pysnmp正确识别ifDescr从我的本地定义RFC-1213.py;然而，pysnmp没有翻译MIB的OID到像在下面的输出ifDescr名称...

问题

我怎样才能让pysnmp输出ObjectName()实例作为ObjectName(ifDescr.1)，而不是ObjectName(1.3.6.1.2.1.2.2.1.2.1)？

[ 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.1), OctetString('Unit: 1 Slot: 0 Port: 1 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.2), OctetString('Unit: 1 Slot: 0 Port: 2 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.3), OctetString('Unit: 1 Slot: 0 Port: 3 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.4), OctetString('Unit: 1 Slot: 0 Port: 4 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.5), OctetString('Unit: 1 Slot: 0 Port: 5 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.6), OctetString('Unit: 1 Slot: 0 Port: 6 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.7), OctetString('Unit: 1 Slot: 0 Port: 7 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.8), OctetString('Unit: 1 Slot: 0 Port: 8 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.9), OctetString('Unit: 1 Slot: 0 Port: 9 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.10), OctetString('Unit: 1 Slot: 0 Port: 10 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.11), OctetString('Unit: 1 Slot: 0 Port: 11 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.12), OctetString('Unit: 1 Slot: 0 Port: 12 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.13), OctetString('Unit: 1 Slot: 0 Port: 13 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.14), OctetString('Unit: 1 Slot: 0 Port: 14 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.15), OctetString('Unit: 1 Slot: 0 Port: 15 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.16), OctetString('Unit: 1 Slot: 0 Port: 16 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.17), OctetString('Unit: 1 Slot: 0 Port: 17 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.18), OctetString('Unit: 1 Slot: 0 Port: 18 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.19), OctetString('Unit: 1 Slot: 0 Port: 19 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.20), OctetString('Unit: 1 Slot: 0 Port: 20 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.21), OctetString('Unit: 1 Slot: 0 Port: 21 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.22), OctetString('Unit: 1 Slot: 0 Port: 22 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.23), OctetString('Unit: 1 Slot: 0 Port: 23 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.24), OctetString('Unit: 1 Slot: 0 Port: 24 10G - Level'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.25), OctetString(' CPU Interface for Unit: 0 Slot: 5 Port: 1'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.26), OctetString('Link Aggregate 1'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.27), OctetString('Link Aggregate 2'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.28), OctetString('Link Aggregate 3'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.29), OctetString('Link Aggregate 4'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.30), OctetString('Link Aggregate 5'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.31), OctetString('Link Aggregate 6'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.32), OctetString('Link Aggregate 7'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.33), OctetString('Link Aggregate 8'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.38), OctetString('Vl21'))], 
[(ObjectName(1.3.6.1.2.1.2.2.1.2.39), OctetString('Vl22'))] 
] 

UPDATE

基于Popper12的回答显式的解决方案是

import string 
from pysnmp.smi import builder, view, error 
from pysnmp.entity.rfc3413.oneliner import cmdgen 
from collections import namedtuple as NT 

cmdGen = cmdgen.CommandGenerator() 
mibBuilder = builder.MibBuilder() 
mibPath = mibBuilder.getMibPath() + ('/opt/python/Models/Network/MIBs',) 
mibBuilder.setMibPath(*mibPath) 
mibBuilder.loadModules(
    'RFC-1213', 
    ) 
mibView = view.MibViewController(mibBuilder) 
errorIndication, errorStatus, errorIndex, \ 
       varBindTable = cmdGen.nextCmd(
    # SNMP v2 
    cmdgen.CommunityData('test-agent', 'public'), 
    # Transport 
    cmdgen.UdpTransportTarget(('192.168.56.131', 161)), 
    (('', 'ifDescr'),), 
    ) 

SNMPObject = NT('SNMPObject', ['modName', 'symName', 'index', 'value']) 

if errorIndication: 
    print errorIndication 
else: 
    if errorStatus: 
     print '%s at %s\n' % (
      errorStatus.prettyPrint(), 
      varBindTable[-1][int(errorIndex)-1] 
      ) 
    else: 
     for varBindTableRow in varBindTable: 
      for oid, val in varBindTableRow: 
       (symName, modName), indices = cmdgen.mibvar.oidToMibName(
        cmdGen.mibViewController, oid 
        ) 
       val = cmdgen.mibvar.cloneFromMibValue(
           cmdGen.mibViewController, modName, symName, val 
        ) 
       index = int(string.join(map(lambda v: v.prettyPrint(), indices), '.')) 
       value = val.prettyPrint() 
       print SNMPObject._make([modName, symName, index, value]) 

当我跑，我现在得到...

SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=1, value="'Unit: 1 Slot: 0 Port: 1 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=2, value="'Unit: 1 Slot: 0 Port: 2 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=3, value="'Unit: 1 Slot: 0 Port: 3 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=4, value="'Unit: 1 Slot: 0 Port: 4 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=5, value="'Unit: 1 Slot: 0 Port: 5 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=6, value="'Unit: 1 Slot: 0 Port: 6 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=7, value="'Unit: 1 Slot: 0 Port: 7 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=8, value="'Unit: 1 Slot: 0 Port: 8 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=9, value="'Unit: 1 Slot: 0 Port: 9 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=10, value="'Unit: 1 Slot: 0 Port: 10 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=11, value="'Unit: 1 Slot: 0 Port: 11 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=12, value="'Unit: 1 Slot: 0 Port: 12 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=13, value="'Unit: 1 Slot: 0 Port: 13 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=14, value="'Unit: 1 Slot: 0 Port: 14 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=15, value="'Unit: 1 Slot: 0 Port: 15 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=16, value="'Unit: 1 Slot: 0 Port: 16 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=17, value="'Unit: 1 Slot: 0 Port: 17 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=18, value="'Unit: 1 Slot: 0 Port: 18 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=19, value="'Unit: 1 Slot: 0 Port: 19 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=20, value="'Unit: 1 Slot: 0 Port: 20 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=21, value="'Unit: 1 Slot: 0 Port: 21 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=22, value="'Unit: 1 Slot: 0 Port: 22 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=23, value="'Unit: 1 Slot: 0 Port: 23 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=24, value="'Unit: 1 Slot: 0 Port: 24 10G - Level'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=25, value="' CPU Interface for Unit: 0 Slot: 5 Port: 1'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=26, value="'Link Aggregate 1'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=27, value="'Link Aggregate 2'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=28, value="'Link Aggregate 3'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=29, value="'Link Aggregate 4'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=30, value="'Link Aggregate 5'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=31, value="'Link Aggregate 6'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=32, value="'Link Aggregate 7'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=33, value="'Link Aggregate 8'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=34, value="'Link Aggregate 9'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=35, value="'Link Aggregate 10'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=36, value="'Link Aggregate 11'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=37, value="'Link Aggregate 12'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=38, value="'Vl21'") 
SNMPObject(modName='RFC1213-MIB', symName='ifDescr', index=39, value="'Vl22'") 

这没有按” t用symboli回答我关于ObjectName实例的确切问题c名字;然而，这当然够好。

Answer 1

一般来说，要在OID和符号名称之间进行转换，您需要使用MIB查看器组件。

当您使用pysnmp“oneliner”API时，会隐式地为您的输入OID /符号调用此转换。然而，它需要为您的输出OID（以及可能的值）显式执行。

见配方下面的例子：

http://pysnmp.sourceforge.net/examples/4.x/v3arch/oneliner/manager/withmib/nextgen.html

Answer 2

这不回答我关于对象名符号名实例准确的问题;然而，它确实够好

符号名称是OID的别名，与OID不同，它们不出现在协议操作中。 OID别名映射由称为MIB的独立专用数据库分开维护。

因此，OID的符号表示不会与ObjectName一起携带，您可以通过OID在MIB中查找符号名称。

希望我的解释有道理。