Re: [pysnmp-users] Custom MIB files
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Re: [pysnmp-users] Custom MIB files
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From: Jian Li <ji...@le...> - 2016-12-05 21:46:04
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Ilya,
So PacketPower actually put the MIB file on-line? I am fine to use the local file option for now, and wait for them to get it updated online.
The local file option worked for me. Now I see the modifications in the python file. Thanks a lot for your help.
Thanks,
Jian
-----Original Message-----
From: Ilya Etingof [mailto:il...@gl...]
Sent: Monday, December 5, 2016 3:58 PM
To: Jian Li
Cc: pys...@li...
Subject: Re: [pysnmp-users] Custom MIB files
Jian,
I can replace the on-line version of the MIB file if it is somehow outdated or broken. If you want to use an alternative version locally, just point `mibdump` to your local directory by passing the:
--mib-source file:///local-directory --mib-source 'http://mibs.snmplabs.com/asn1/@mib@'
option to it. The second --mib-source may be needed for `mibdump` to pick up dependent MIBs from the web server if you do not have them locally.
On 12/05/2016 09:50 PM, Jian Li wrote:
> Ilya,
>
> Some more info for the mibdump.py issue I am experiencing.
>
> This is the MIB I am trying to modify with a local MIB text file,
> /mibs.snmplabs.com/asn1/PACKETPOWER-EG4-MIB/.
> When I do /mibdump.py
> --rebuild///local-directory/PACKKETPOWER-EG4-MIB.txt/ it always takes
> the content from the online PACKETPOWER-EG4-MIB without any
> modifications in my local MIB text file ( I was trying to add more
> constraint values for channelId in that file) to the generated
> ~/.pysnmp/mibs/PACKETPOWER-EG4-MIB.py
>
> So, how did /PACKETPOWER-EG4-MI/ get online? Is it possible to either
> delete or modify it?
>
> Thanks,
>
> Jian
>
> -----Original Message-----
> From: Ilya Etingof [mailto:il...@gl...]
> Sent: Saturday, December 3, 2016 7:39 AM
> To: Jian Li
> Cc: pys...@li...<mailto:pys...@li...>
> Subject: Re: [pysnmp-users] Custom MIB files
>
>
> My guess is that once you compiled MIB into .py form, you should make
> pysnmp using it by either:
>
> * moving your .py MIB into ~/.pysnmp/mibs or
> * configuring pysnmp to pick up .py MIBs from a non-default location
> (http://pysnmp.sourceforge.net/docs/api-reference.html#pysnmp.smi.rfc1902.ObjectIdentity.addMibSource).
>
> MIB files at snmplabs.com serve as a shared, community repository of
> originally ASN.1 MIB files, there should be no need to remove them.
>
>> On 02 Dec 2016, at 22:41, Jian Li <ji...@le... <mailto:ji...@le...<mailto:ji...@le...%20<mailto:ji...@le...>>> wrote:
>>
>> Ilya,
>>
>> I modified my mib file and did a "mibdump.py --rebuild" with the
>> modified mib file. But the generated python file did not take the
>> modifications ( I am using ubuntu14.04 with python 2.7). Do I need to
>> somehow delete the one online as well,
>> http://mibs.snmplabs.com:80/asn1/PACKETPOWER-EG4-MIB
>>
>> Thanks,
>>
>> Jian
>>
>> -----Original Message-----
>> From: Ilya Etingof [mailto:il...@gl...]
>> Sent: Thursday, November 17, 2016 5:45 PM
>> To: Jian Li
>> Cc: pys...@li...<mailto:pys...@li...>
> <mailto:pys...@li...>
>> Subject: Re: [pysnmp-users] Custom MIB files
>>
>>
>> I could not compile your MIB because it seems to import both SMIv1 and SMIv2 types. Once I changed the SMIv1 IMPORTS:
>>
>> DisplayString
>> FROM RFC1213-MIB
>>
>> for SMIv2 ones:
>>
>> DateAndTime, DisplayString, RowStatus, TruthValue, DisplayString
>> FROM SNMPv2-TC
>>
>> It compiled successfully.
>>
>> As for your other question — your code looks OK for as long as you actually iterate the generator you’ve created because this is when actual I/O happens:
>>
>> gen = nextCmd(…)
>> for rsp in gen:
>> print(rsp)
>>
>> And SNMP agent at 169.254.81.145 is responding. You may also debug your script against public SNMP simulator:
>>
>> http://snmpsim.sourceforge.net/public-snmp-simulator.html
>>
>> Though it does not implement your MIB.
>>
>>> On 17 Nov 2016, at 22:18, Jian Li <ji...@le... <mailto:ji...@le...<mailto:ji...@le...%20<mailto:ji...@le...>>> wrote:
>>>
>>> Ilya,
>>>
>>> Please find the attached MIB file. Thank you very much for your help.
>>>
>>> I was able to use mibdump.py to compile that MIB file to python
>>> modules. There is another question I want to ask you about pysnmp as
>>> well, I did not get any response for the following command, do I do
>>> something obviously wrong? The snmp agent is configured and I was
>>> able to get correct response for ObjectIdentity('SNMPv2-MIB',
>>> 'system')
>>>
>>> nextCmd(SnmpEngine(),
>>> CommunityData('public', mpModel=1),
>>> UdpTransportTarget(('169.254.81.145', 161)),
>>> ContextData(),
>>> ObjectType(ObjectIdentity('
>>> PACKETPOWER-EG4-MIB, ' packetPower'))
>>>
>>> Thanks,
>>>
>>> Jian
>>>
>>> -----Original Message-----
>>> From: Ilya Etingof [mailto:il...@gl...]
>>> Sent: Thursday, November 17, 2016 3:08 PM
>>> To: Jian Li
>>> Cc: pys...@li...<mailto:pys...@li...>
> <mailto:pys...@li...>
>>> Subject: Re: [pysnmp-users] Custom MIB files
>>>
>>>
>>> Could you please share your MIB (e.g. CUSTOM-EG4-MIB)? I suspect it has syntax errors, in particular it may miss SNMPv2-SMI import.
>>>
>>>> On 15 Nov 2016, at 16:34, Jian Li <ji...@le... <mailto:ji...@le...<mailto:ji...@le...%20<mailto:ji...@le...>>> wrote:
>>>>
>>>> I tried to add the MIB files to a python script, using PySNMP
>>>> addAsn1MibSource(‘file:///path’). However I got the following
>>>> error,
>>>>
>>>> pysnmp.smi.error.MibNotFoundError: CUSTOM-EG4-MIB compilation
>>>> error(s): missing; missing; missing; missing; no module "SNMPv2-SMI"
>>>> in symbolTable at MIB CUSTOM-EG4-MIB
>>>>
>>>> Would really appreciate your help to get it resolved.
>>>>
>>>> Thanks,
>>>>
>>>> Jian
>>> <PACKETPOWER-EG4-MIB>
>>
>
>
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