Aggregated Graph not working !

[jr102801]

Could someone help me on walking me thru on how could I aggregate two graphs, we currently have two 10GB interfaces I would like to be able to graph both of them. See sample graph that we currently have using MRTG. I installed the aggregate plug-in it seems that the code or formula I’m using is not working or maybe I’m not setting the graph properly. Attached you see my MRTG current graph I would like to mimic the same on cacti see other attachment which show how I’m trying to set it up. I would really appreciate anyone input since I’m a newbie on cacti.
Thanks to all!

[gandalf]

Did you already read the provided pdf documentation for that plugin?
Reinhard