I am interested in having a subagent handle all requests for my particular MIB.
As a result, I am reading the tutorial entitled "Writing a SubAgent' located
here:
http://www.net-snmp.org/wiki/index.php/TUT:Writing_a_Subagent
I did not think "auto-building" the subagent using the "net-snmp-config
--compile-subagent" option was the most common way of creating a subagent (am I
wrong?) so I decided to read the "Instrumenting your own code with agentx
subagent support" section of this tutorial.
I downloaded the required files (as recommended):
Makefile
NET-SNMP-TUTORIAL-MIB.txt
example-demon.c
nstAgentSubagentObject.c
nstAgentSubagentObject.h
I was not sure where to put these files, so I created the following directory
and placed them into this location:
.../agent/mibgroup/nstAgentSubagentObject/
I performed the "make example-demon" command successfully and updated my
"snmpd.conf" file to include the "master agentx" line as well.
1) I then tried to fire up the snmpd master agent but it will not start. I am
trying to start it using the following command:
/export/home/myname/snmp/usr/local/sbin/snmpd -f &
If I remove the "master agentx" line from the "snmpd.conf" file then it will
start, but this can not be done since I need to inform master agent that
subagents will be registering with it. Of course, putting the "master agentx"
line back in results in the "snmpd" master agent failing to start again.
Any idea what I am doing wrong? Why I can not start the master agent when the
"master agentx" line is included?
2) I am not sure how the "example-demon" subagent is actually related to the
"NET-SNMP-TUTORIAL-MIB.txt" MIB file at all. I am assuming this tutorial is
supposedly showing me how a subagent (ie: example-demon) can be created to
handle all snmp requests for a particular MIB file (ie: the
"NET-SNMP-TUTORIAL-MIB.txt" MIB file), but I do not see how the subagent is
ever associated with a MIB file at all.
If my assumptions are correct, then how does a subagent become associated with
a MIB file?
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