Re: Accessing data in the agent from a subagent

On tis, 2008-03-04 at 16:37 +0000, Dave Shield wrote:
> On 04/03/2008, Aaron Young <Aaron.Young@mpathix.com> wrote:
> > I'm fairly new to net-snmp and am currently working on a subagent
> > serving our own mib. It would be nice to be able to perform GET
> > requests on data served by the main agent (i.e. mib-2 data) from within
> > my agent code. Is there a clean way to do this, or would this involve
> > adding client code to the agent?
>
> Try something like:
>
> netsnmp_query_set_default_session(
> netsnmp_iquery_user_session(secName));
>
> where secName is an SNMPv3 user with read-access to the
> information you want to query
>
> Then use
>
> netsnmp_query_get( varlist, NULL );
>
> where varlist is a netsnmp_variable_list structure
> (or list of structures) containing the OIDs that you
> are interested in.
> This call will fill in the corresponding values.

It should be noted that this only work in a compiled in or dlopened
module. It won't work in an AgentX or SMUX subagent where you would have
to actually send a request to the master agent to get hold of the value.

/MF


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