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List:       net-snmp-users
Subject:    Re: NETSNMP , Problem in Get Next. column number not incremented
From:       Dave Shield <D.T.Shield () liverpool ! ac ! uk>
Date:       2011-07-25 9:55:51
Message-ID: CAKoMtGbS-Lroefq4QsVmbgTMJLPRMs_b8DfTF7F5ach+0ysCSA () mail ! gmail ! com
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On 22 July 2011 12:50, Mohammad Waqas Athar <mohwaqas12@hotmail.com> wrote:
> I have used these table implementations create-dataset , iterator and
> array-user but none seems to provide me the solution i want . I want to
> fetch the index, query mysql, and then reply back but instead all these
> implementations handles everything on there own . Create-Dataset was pretty
> good but it handles request only if row exists , otherwise it replies with
> No Such Instance .

The initialisation routine generated by the template for this framework should
include the statement

    /* comment this out or delete if you don't support creation of new rows */
    table_set->allow_creation = 1;


This ought to allow the module to handle row creation.


> Is there any example for table_raw which i can follow to get it working

Not that I'm aware of, no.

Dave
>
>
>> Date: Fri, 22 Jul 2011 10:22:12 +0100
>> Subject: Re: NETSNMP , Problem in Get Next. column number not incremented
>> From: D.T.Shield@liverpool.ac.uk
>> To: mohwaqas12@hotmail.com
>> CC: net-snmp-users@lists.sourceforge.net
>>
>> On 22 July 2011 09:06, Mohammad Waqas Athar <mohwaqas12@hotmail.com>
>> wrote:
>> > I generated code using mib2c.table_raw.conf . ALL work well except Get
>> > Next Request.
>> > when i walk table using snmpwalk i get  Error: OID not increasing:
>> > i looked at the code and it seems the column number does not increase.
>> > Do we have to increase the column number ourself?
>>
>> Yes - the whole point of the 'table_raw' template is that it's a *raw*
>> table
>> framework. By using this (rather than the table_data or table_iterator
>> templates, or the MfD framework), you are saying that you want to handle
>> the NEXT processing yourself.
>> The other table frameworks typically attempt to determine the next valid
>> row (and column if necessary), leaving the MIB handler to deal with
>> supplying
>> the appropriate value.
>>
>> table_raw doesn't do this - you have to determine the next OID yourself,
>> and then supply the corresponding value.
>>
>>
>> Note also that you should be increasing the *row* number first.
>> You only increase the column number once you've finished processing
>> the last row for the original column.
>>
>> We wouldn't normally recommend using table_raw, until you've had
>> a bit of experience with the other templates first. It's definitely
>> intended
>> as a more advanced option.
>>
>> Dave
>
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