Re: Some Net-SNMP needed answers

Thank you for your input.

You say there is no such thing as text enumeration, but what of the  
following from SMIv2 RFC:
SimpleSyntax ::=
            CHOICE {
                number
                    INTEGER,
                string
                    OCTET STRING,
                object
                    OBJECT IDENTIFIER,
                empty
                    NULL
            }

Could this be used to make a string enumeration syntax?
Something like: CHOICE { text1 OCTET STRING, text2 OCTET STRING, text3  
OCTEC STRING }
I know this doesn't work because the validator (smilint) is complaining.

I have tried searching for MIBs to see if anyone is using  
SimpleSyntax. Could not find any.


Regarding the OPAQUE DOUBLE. Looks like if I want to give the user the  
complete value I would have to use OCTET STRING for doubles.


/Sverre

Siterer "Fulko Hew" <[email protected]>:

> On Mon, Dec 3, 2012 at 6:51 AM, <[email protected]> wrote:
>
>> I must ask, is this mailing list dead for some reason, or is people
>> just very busy? Or perhaps I have been nagging the mailing list so
>> many times with questions.
>>
>
>
> No, its probably because if nobody knows the right answer (for sure)
> they will probably not answer.  But let me give you what I know.
>
>
>
>> My SNMP AgentX application is nearly complete, but I need help to
>> answer some standing questions that I'm struggling with.
>>
>> I would appreciate it very much if anyone could answer the following
>> emails I sent to the mailing list.
>> * Textual enumeration in MIB (this is actually more of a SMIv2 problem
>> than SNMP)
>>
>
> There is no such thing as an enumeration represented as text.
> They are always integers.  The name equivalent you assign to the number
> is for the benefit of somebody's source code or for the display on an NMS.
>
>  So what you have to have is:
>
> param2 OBJECT-TYPE
>       SYNTAX      INTEGER { stopped (0), ready (1), running(2) }
>
>
> * Choosing the right ASN type
>>
>
> Here you asked two questions:
>
> unfortunately, the agents I've been writing have been AgentX (using my Perl
> and/or Java
> sub-agent library, but...
>
> 1/ about  integer32, I'd say use ASN_UNSIGNED, from my poor memory...
>
> I don't have my reference information in front of me, but the differences
> are:
> - numbers from -2 gig to +2 gig
> - numbers from 0 to 4 gig
> - a things that are only allowed to 'increase'
>
> 2/ and the whole business of OPAQUE or float is true.
>
> I don't believe there is a _real_ standard for floats, and OPAQUE is a way
> to encode 'other stuff', but you can't count on it being usable anywhere
> else, but in your code.  Where ever I have needed something code
> to a float, I redefine it as an integer to avoid the problem.  I.e Instead
> of saying 3.5 seconds, I use 3500 milliseconds.
>
>
> In addition I am wondering about the agent mode MODE_SET_BEGIN. When
>> issuing an snmpset this mode is never entered into. It would be great
>> to have such a mode available. When I issue an snmpset with multiple
>> OIDs, I would like the handler to do some initial work only once
>> before SET_RESERVER1, SET_RESERVER2, SET_ACTION on the various OIDs in
>> the request.
>>
>
> And since I can't speak intelligently about this... I won't.
>



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