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

2. edit '/etc/sysconfig/snmpd.options' to contain:
   OPTIONS="$OPTIONS -Dgnustep -Lf /var/log/snmpd"
   export OPTIONS
   so that any debug for the gnustep module would be logged
   in /var/log/snmpd

3. edit '/etc/sysconfig/snmptrapd.options' to contain:
   OPTIONS="$OPTIONS -Dgnustep -Lf /var/log/snmptrapd"
   export OPTIONS
   so that any debug for the gnustep module would be logged
   in /var/log/snmptrapd

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).

5. restart with '/etc/rc.d/init.d/snmpd restart'

6. build/install/run the Control server

7. 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