[mrtg] How do i do an addition of two values on a graph

[Craig Englaro]

 How do I add two values existing values and display this a third line on my
graph.

I currently run some frame relay services and my cap is on the total
incoming and outgoing traffic.

I currently monitor both incoming and outgoing traffic but have to manually
add the two figures together to get current load.

Has any one done this / Know how to do this



Regards

Craig Englaro

Senile Network Engineer   
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