my snmpd experience

in ubuntu, setup a snmpd

Take net-snmp 5.4.3 for example

Modify /etc/conf/snmpd.conf

# make snmpd to listen IPv4:161 and IPv6:161
agentAddress udp:161,udp6:[::1]:161

# systemonly is the default setting
# add a new view name, for example 'system'
view   systemonly  included   .1.3.6.1.2.1.1
view   systemonly  included   .1.3.6.1.2.1.25.1
view   system      included   .1

 # rocommunity COMMUNITY [SOURCE [OID | -V VIEW [CONTEXT]]]
 rocommunity public       default    -V systemonly
 rocommunity localAccess  default    -V system

Reference
http://www.net-snmp.org/docs/man/snmpd.conf.html