Re: Is there a simple/standard way to access other modules oids from within a mib module?

On 12/01/2008, Manfred Wassmann <[email protected]> wrote:
> I am writing a MIB module for some specific piece of hardware. Some of
> my code needs to return values that are already available from
> standard MIB modules..... I'd like to use the values already
> available from standard modules. Is that possible?

The simplest approach is probably to use the "internal query" mechanism,
as used in the DisMan Event MIB module.

Something like:

    netsnmp_session *sess = netsnmp_iquery_user_session("user");
    netsnmp_variable_list var = // the varbind(s) you want to retrieve

    netsnmp_query_get( &var, sess );

or even

    netsnmp_query_get( &var,  netsnmp_query_get_default_session());

This requires you to have set up the specified SNMPv3 user
(with read permission for the relevant OIDs), or a default "agentSecName".
See the snmpd.conf(5) man page info on setting up the "monitor"
directive for more details.

Dave

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