ESX 3 snmpd config
Primarily as a note to myself, as finding the right info in a search can be a pain, especially getting them all together.
$ sudo vi /etc/snmp/snmpd.conf
$ sudo /sbin/service snmpd start
$ sudo /sbin/chkconfig snmpd on
$ sudo /usr/sbin/esxcfg-firewall -e snmpd