Hi everybody,

snmpwalk cannot find any CPU-related OIDs on the SNMP of m0n0wall
1.2b6 (WRAP), the mailing-list archive also has no clues so I
experimented a little and put this into /etc/ifgraph.conf

[WRAP_CPU]
oids=1.3.6.1.4.1.2021.11.9.0,1.3.6.1.4.1.2021.11.10.0
oiddefs=AREA#00FF00,STACK#4455EA
legends=user,system
ylegend=CPU utilization
max=100
shortlegend=%%

Results are here: http://www.fpage.org/ifgraph/

It does give the same results as the Adobe SVG Viewer, you can easily
adjust it for MRTG.

HTH   Frederick