Re: [pysnmp-users] Problem observed in new mib loading

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

Looking at VM-MIB, I do not see vmNumber object there:

    http://mibs.snmplabs.com/asn1/VM-MIB

Do you have a newer MIB?

Also, given you query an existing object, you should query MIB object
rather than MIB object instance:

    ObjectType(ObjectIdentity('VM-MIB', 'vmNumber',
0).addAsn1MibSource('file:///usr/share/snmp',
'http://mibs.snmplabs.com/asn1/@mib@')))


On 12/15/2016 12:17 PM, riv...@wi... wrote:
> Hi,
> 
>  
> 
> I have tried this below one.
> 
>  
> 
> #!/usr/bin/python
> 
> from pysnmp.hlapi import *
> 
>  
> 
> errorIndication, errorStatus, errorIndex, varBinds = next(
> 
>     getCmd(SnmpEngine(),
> 
>            CommunityData('public'),
> 
>            UdpTransportTarget(('10.154.19.88', 161)),
> 
>            ContextData(),
> 
>            ObjectType(ObjectIdentity('VM-MIB',
> 'vmNumber').addAsn1MibSource('file:///usr/share/snmp',
> 
>                                                                                 
> 'http://mibs.snmplabs.com/asn1/@mib@')))
> 
> )
> 
>  
> 
> if errorIndication:
> 
>     print(errorIndication)
> 
> elif errorStatus:
> 
>     print('%s at %s' % (errorStatus.prettyPrint(),
> 
>                         errorIndex and varBinds[int(errorIndex) - 1][0]
> or '?'))
> 
> else:
> 
>     for varBind in varBinds:
> 
>         print(' = '.join([x.prettyPrint() for x in varBind]))
> 
>  
> 
>  
> 
> VM-MIB::vmNumber = No Such Object currently exists at this OID
> 
>  
> 
> Thanks & Regards,
> 
> Riva.
> 
>  
> 
> *From:*Rivarani Roy
> *Sent:* Thursday, December 15, 2016 3:48 PM
> *To:* 'Ilya Etingof' <il...@gl...>
> *Cc:* pys...@li...
> *Subject:* RE: [pysnmp-users] Problem observed in new mib loading
> 
>  
> 
> Hi,
> 
>  
> 
> I followed the below steps but got the same result.
> 
> Currently using the latest pysnmp but didn’t get any success.
> 
>  
> 
> Thanks & Regards,
> 
> Riva.
> 
>  
> 
> *From:*Ilya Etingof [mailto:il...@gl...]
> *Sent:* Thursday, December 15, 2016 2:26 PM
> *To:* Rivarani Roy <riv...@wi... <mailto:riv...@wi...>>
> *Cc:* pys...@li...
> <mailto:pys...@li...>
> *Subject:* Re: [pysnmp-users] Problem observed in new mib loading
> 
>  
> 
> ** This mail has been sent from an external source **
> 
> Try adding `lookupNames=True`, `lookupValues=True` as shown here:
> 
>  
> 
>  
>   http://pysnmp.sourceforge.net/examples/current/v3arch/oneliner/manager/cmdgen/getnext-v2c-with-mib-resolution.html
> 
>  
> 
> But even better upgrade to the latest pysnmp and you could skip the
> explicit mibdump-based conversion step.
> 
>  
> 
>  
>   http://pysnmp.sourceforge.net/examples/hlapi/asyncore/sync/manager/cmdgen/walking-operations.html
> 
>  
> 
>  
> 
>     On 15 Dec 2016, at 07:11, <riv...@wi...
>     <mailto:riv...@wi...>> <riv...@wi...
>     <mailto:riv...@wi...>> wrote:
> 
>      
> 
>     Hi,
> 
>      
> 
>     I am trying to automate VM-MIB by using pysnmp.
> 
>      
> 
>     1.       Generated VM-MIB.py file from VM-MIB.txt by mibdump.py 
>     --debug=all --mib-borrower=/usr/share/snmp/mibs/   VM-MIB.txt
> 
>     2.       Tried  loadmib and addmibsource modules to load VM-MIB.
> 
>      
> 
>     Its loading the Object from VM-MIB as I am able to see the output
>     but the MIB name is showing as SNMPv2-SMI.
> 
>     Is it the right procedure  to do or do we have any other process.
> 
>      
> 
>     #!/usr/bin/python
> 
>     from pysnmp.entity.rfc3413.oneliner import cmdgen
> 
>      
> 
>     cmdGen = cmdgen.CommandGenerator()
> 
>      
> 
>     errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(
> 
>         cmdgen.CommunityData('public'),
> 
>         cmdgen.UdpTransportTarget(('10.154.19.88', 161)),
> 
>         #cmdgen.MibVariable('VM-MIB', 'vmEntry').loadmibs(),
> 
>         lexicographicMode=True, maxRows=100,
> 
>         ignoreNonIncreasingOid=True
> 
>     )
> 
>     #print varBindTable
> 
>      
> 
>     # Check for errors and print out results
> 
>     if errorIndication:
> 
>         print(errorIndication)
> 
>     else:
> 
>         if errorStatus:
> 
>             print('%s at %s' % (
> 
>                 errorStatus.prettyPrint(),
> 
>                 errorIndex and varBindTable[int(errorIndex)-1] or '?'
> 
>                 )
> 
>             )
> 
>         else:
> 
>             #for name, val in varBindTable:
> 
>                #print('%s = %s' % (name.prettyPrint(), val.prettyPrint()))
> 
>                #print (varBindTable[0][0].prettyPrint() +' = '+
>     varBindTable[0][1].prettyPrint())
> 
>             len_value= len(varBindTable)
> 
>             output = open('template.txt','a')
> 
>             for i in range(0,len_value):
> 
>                 output.write(varBindTable[i][0].prettyPrint())
> 
>                 output.write("\n")
> 
>             output.close()
> 
>      
> 
>      
> 
>      
> 
>     Getting this below output.
> 
>      
> 
>      
> 
>     SNMPv2-SMI::mib-2.23456.1.4.1.2.2 = VM6  ----------- it should
>     represent as VM-MIB instead of SNMPV2-SMI
> 
>     SNMPv2-SMI::mib-2.23456.1.4.1.2.3 = VM1
> 
>     SNMPv2-SMI::mib-2.23456.1.4.1.2.4 = VM2
> 
>     SNMPv2-SMI::mib-2.23456.1.4.1.2.5 = VM3
> 
>     SNMPv2-SMI::mib-2.23456.1.4.1.2.6 = VM4
> 
>      
> 
>      
> 
>      
> 
>     Thanks & Regards,
> 
>     Riva.
>