Re: [pysnmp-users] Bug in 3.3.4 snmpwalk.py?

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

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> Error: OID not increasing:  [('.1.3.6.1.2.1.10.127.1.3.3.1.3.9', 
> '.1.3.6.1.2.1.10.127.1.3.3.1.3.10')]
> 11:03:19 mcfletch@cmon:~/pysnmp-3.3.4/examples $
> 
> i.e. str(10) < str(9) lexically.  Line 164:173 in the source, I think 
> this is approximately what you want (untested as of yet, as I'm not sure 
> which restriction is actually intended):

Right, the bug here is that OIDs here are compared as literals rather than
as objects. A quick (and slightly inefficient) fix attached. I'm going to
rework it shortly.

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> or (from my current code):
> 
>         if suffix:
>             sentinel = oids[0].split('.')
>             sentinel = sentinel[:-suffix]
>             sentinel = ".".join(sentinel)
>         else:
>             sentinel = oids[0]
> ...
>             if not testOID.startswith( sentinel ):
>                 break
> 
> but that's a very different check for "end-of-table" which assumes that 
> the first OID doesn't run out before everything else does, (and does no 
> always-increasing-numbers check).

BTW, there are:

ObjectIdentifier.isaprefix() method for seemingly similar purpose.

Thanks,
ilya