hello,
i am trying to develop net-snmp agent in my existing application P1.
i am using a separate thread for the sub-Agent in my application that uses
below function.
int start_snmp_agent()
{
int agentx_subagent=1; /* change this if you want to be a SNMP master agent */
int background = 0; /* change this if you want to run in the background */
int syslog = 0; /* change this if you want to use syslog */
/* print log errors to syslog or stderr */
if (syslog)
snmp_enable_calllog();
else
snmp_enable_stderrlog();
/* we're an agentx subagent? */
if (agentx_subagent) {
/* make us a agentx client. */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
}
/* run in background, if requested */
if (background && netsnmp_daemonize(1, !syslog))
exit(1);
/* initialize tcpip, if necessary */
SOCK_STARTUP;
/* initialize the agent library */
init_agent("example-demon");
/* initialize mib code here */
/* mib code: init_nstAgentSubagentObject from nstAgentSubagentObject.C */
init_nstAgentSubagentObject();
/* initialize vacm/usm access control */
if (!agentx_subagent) {
init_vacm_vars();
init_usmUser();
}
/* example-demon will be used to read example-demon.conf files. */
init_snmp("p1");
/* If we're going to be a snmp master agent, initial the ports */
if (!agentx_subagent)
init_master_agent(); /* open the port to listen on (defaults to udp:161) */
/* In case we recevie a request to stop (kill -TERM or kill -INT) */
keep_running = 1;
signal(SIGTERM, stop_server);
signal(SIGINT, stop_server);
snmp_log(LOG_INFO,"p1 is up and running.\n");
while(keep_running) {
agent_check_and_process(1);
}
/* at shutdown time */
snmp_shutdown("p1");
SOCK_CLEANUP;
return 0;
}
when i am starting my existing application p1 that stops executing when it
starts the sub agent code(this code).
can you please help me how i can develop sub agent that can be embeded in
existing application.
Regards
Ashish
On Thu, Jan 14, 2010 at 1:38 PM, Dave Shield <d.t.shi...@liverpool.ac.uk>wrote:
> 2010/1/14 Ashish vashishtha <ashish.vashish...@gmail.com>:
> > if i make my process p1 as a net snmp subagent using agentx than will the
> > snmp master agent(SNMPD) will forward all the incoming requests to P1
>
> No. Not necessarily.
>
> > (as there can be more than one sub-Agent)?
>
> Each subagent will register with the master agent,
> specifying the OID range(s) that it implements.
> The master agent then uses this information to pass
> each requested varbind to the appropriate subagent.
>
>
> > is it possible to filter incoming requests from the snmpd to
> > the p1 based on the range of the OIDs ?
> > if yes than how this filtering can be done.
>
> That is the natural operation of AgentX.
> Please see the AgentX specs, or any recent SNMP book for details.
>
> Dave
>
--
Regards
Ashish Vashishtha
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