Re: Segmentation fault

So, first this shell command :

snmpget -v 2c -c private 10.0.0.1 rbQoSProfileType.25


and the result :

RAINBOW-SERVICES-MIB::rbQoSProfileType.25 = INTEGER: rbRT(1)


Then :

snmpget -v 2c -c private 10.0.0.1 rbQoSProfileType.24


and the result :

Error in packet
> Reason: (genError) A general failure occured
> Failed object: RAINBOW-SERVICES-MIB::rbQoSProfileType.24
>

But I know why there is an error here. In fact, in the table the index goes
from 1 to 17 and then skip to 25. So there is no entry for 18 to 24. Here is
the same shell command as above but with the 17th index :

snmpget -v 2c -c private 10.0.0.1 rbQoSProfileType.24
>

and the result :

RAINBOW-SERVICES-MIB::rbQoSProfileType.17 = INTEGER: rbBE(3)


 Then :

snmpgetnext -v 2c -c private 10.0.0.1 rbQoSProfileType.17
>

and the result :

RAINBOW-SERVICES-MIB::rbQoSProfileType.25 = INTEGER: rbRT(1)
>

These shell commands work, so I continue with my script (and I replace 24 by
17, as explained above) :

import netsnmp
>
> profileNb = "17"
> qosType = "0"
> value = "rbQoSProfileType"
>
> oid = netsnmp.Varbind(value, profileNb, qosType)
> result = netsnmp.snmpget(oid, DestHost = "10.0.0.1", Community = "private",
> Version = 2)
> print("%s") %(result)
>

And this script crashes. It also gives segmentation fault.
Now with GETNEXT :

import netsnmp
>
> profileNb = "17"
> qosType = "0"
> value = "rbQoSProfileType"
>
> oid = netsnmp.Varbind(value, profileNb, qosType)
> result = netsnmp.snmpgetnext(oid, DestHost = "10.0.0.1", Community =
> "private", Version = 2)
> print("%s") %(result)
>

The result is still the same, it crashes with segmentation fault.

Thank you


2009/7/8 Dave Shield <[email protected]>

> 2009/7/8 François Dumont <[email protected]>:
> > I confirm that with this script (there is nothing else in the script
> except
> > this) :
> >
> >>    import netsnmp
> >>
> >>    profileNb = "25"
> >>    qosType = "0"
> >>    value = "rbQoSProfileType"
> >>
> >>    oid = netsnmp.Varbind(value, profileNb, qosType)
> >>    result = netsnmp.snmpget(oid, DestHost = "10.0.0.1", Community =
> >> "private", Version = 2)
> >>    print("%s") %(result)
> >
> > It gives the segmentation fault.
>
> OK -good.
>
> Now - the next things to try are:
>
>  -   The shell command
>                  "snmpget -v 2c -c private 10.0.0.1 rbQoSProfileType.25"
>  -   The shell command
>                  "snmpget -v 2c -c private 10.0.0.1 rbQoSProfileType.24"
>  -   The shell command
>                  "snmpgetnext -v 2c -c private 10.0.0.1
> rbQoSProfileType.24"
>
> What results do you see from these two?
>
> Then tweak the script above to read
>
>    profileNb = "24"
>
> and run it again.  Does it crash or not?
> Now tweak it to read
>
>    result = netsnmp.snmpgetnext( .... )
>
> and run it again.  Does it crash or not?
>
> Dave
>

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