Re: [pysnmp-users] Custom MIB files

[Ilya E. <il...@gl...>]

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...> 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...
> 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...> 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...
>> 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...> 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>
>