Here's the sort of thing you might do to set up SNMP support on your
system, assuming that you have net-snmp installed in the normal
locations for something like RedHat Linux.

0. Edit the example GNUSTEP-MIB.txt to contain your own organisation's
   Private Enterprise Number.  This stage is optional, you may use the
   MIB 'as-is' with the GNUstep PEN if you wish.  You only need to use
   an edited version if your organisation wishes to use its own MIB
   with additional features not in the GNUstep one.
   If you are using your own MIB, replace all ocurrances below of
   GNUSTEP-MIB.txt with the name of your own MIB file.

1. install GNUSTEP-MIB.txt in /usr/share/snmp/mibs or wherever net-snmp
   keeps its MIBs on your system.  This manual installation is required
   for a system-wide installation, but if you only want to have access
   to the MIB yourself, the default installation process will have put
   the MIB in your local directory(~/.snmp/mibs) which is correct for
   net-snmp on most systems.

2. For diagnosing problems in snmpd (revert when not debugging),
   edit '/etc/sysconfig/snmpd' to contain:
   OPTIONS="-Dgnustep -Lf /var/log/snmpd"
   so that any debug for the gnustep MIB would be logged
   in /var/log/snmpd
   or use '-Dgnustep -LS0-6d' for logging via syslog.


3. For diagnosing problems in snmptrapd (revert when not debugging),
   edit '/etc/sysconfig/snmptrapd' to contain:
   OPTIONS="-Dgnustep -Lf /var/log/snmptrapd"
   so that any debug for the gnustep MIB would be logged
   in /var/log/snmptrapd
   or use '-Dgnustep -LS0-6d' for logging via syslog.


4. edit /etc/snmp/snmpd.conf to get it to send traps to snmptrapd ...

rwcommunity     public
trap2sink       localhost public

   and to accept agentx connections via tcp ...

agentxsocket    tcp:localhost:705
master          agentx

   having the snmp daemon listening on port 705 for agentx connections is
   essential for the default setup of alarming, but you can use a different
   host and port if you wish (see the EcAlarmSinkSNMP initialisation for
   details).

   NB. Your system may be configured to disallow access via 'public', in
   which case the line
rwcommunity     public
   will not be sufficient to grant access to the alarm tables and you will
   need to either configure appropriate snmp access control settings for
   your system, or completely replace the file (but that would give
   unrestricted access, and therefore be a security problem ... so you
   should only do it for temporary testing of an isolated system).


5. restart with '/sbin/service snmpd restart'
   If you are starting snmp for the first time on a RedHat system then:
   # /sbin/chkconfig snmpd on
   # /sbin/service snmpd start
   should enable the snmp service and then start it.


6. For diagnostics and control of the net-snmp copmponent, you can use a
   gnustep.conf file in any of the standard locations read by netsnmp.
   Typically ~/.snmp/gnustep.conf (where ~ is the home directory of the
   account running the Control server).
   The contents of the file to enable debug logging would typically be
[snmp]
    doDebugging 1
    debugTokens gnustep


7. build/install/run the Control server

8. test with snmpwalk ...

To look at EVERYTHING:
snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep

To look at the current alarms table:
snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep.alarms.alarmsTable

To look at the current alarms table in a tabular format (rows of columns) which will be far too wide to view in a normal terminal window:
snmptable -v 1 -c public localhost GNUSTEP-MIB::gnustep.alarms.alarmsTable

To look at the managed objects table:
snmpwalk -v 1 -c public localhost GNUSTEP-MIB::gnustep.objects

You should be able to get the heartbeat poll interval with:
snmpget -v 1 -c public localhost GNUSTEP-MIB::pollHeartBeat.0

You should be able to set the heartbeat poll interval to two minutes with 
snmpset -v 1 -c public localhost GNUSTEP-MIB::pollHeartBeat.0 i 2

You should be able to set the resync flag interval with
snmpset -v 1 -c public localhost GNUSTEP-MIB::resyncFlag.0 i 1
and set it back to normal with
snmpset -v 1 -c public localhost GNUSTEP-MIB::resyncFlag.0 i 0