Two possible ways. 1. Define a Target which does the calculation: Target[xxxx]: oid1&oid1:c...@device + oid2&oud2:c...@device This will give you a Target graph showing the total of the two OIDs See the MRTG documentation on www.mrtg.org<http://www.mrtg.org> for more details about calculations in the Target definition.
2. If you are using RRDTool as your backend, you can use the Routers2 frontend and then define a Userdefined summary graph over the two separate Targets, and have the graphs stacked. routers.cgi*Graph[maths]: allmarks total routers.cgi*Graph[science]: allmarks total routers.cgi*GraphStyle[allmarks]: stack See http://www.steveshipway.org/cgi-bin/routers2.pl for an example of this frontend (look at the Linux system CPU graphs) Number (2) looks prettiest and lets you see the individual components, but (1) is simpler if you don't have Routers2/RRD installed yet. Steve ________________________________ From: [email protected] [[email protected]] On Behalf Of Gayan S. Amarasiri [[email protected]] Sent: Thursday, 2 July 2009 10:42 p.m. I need to add two parameters and show it in graph using MRTG. For example let say the OID 1.3.4.5.26.626.26.26.0 gives Mathematics marks and the OID 1.3.4.5.26.626.26.27.0 gives the Science marks. I need to draw a graph for the total marks which is the addition of the vales of the above OIDs. How to do these type of stuff? Appreciate your help.
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