Graphing One Value from 2 Datapoints
How to graph one value with two datapoints that contain an upper and lower 32 bit value. This is common on switches and filers that do not have a 64 bit MIB.
- New Graph
- Add High and Low datapoints (these should already be added as a datasource in the template)
- Select Each datapoint and change the Line Type to "Not Drawn"
- Add Data Points -> Custom -> CDEF
- The RPN is the high order bit value * 4294967296 (2^32) + Low order bit value. So enter
- High,4294967296,*,Low,+
- Note: The variable name will be the name of the custom cdef used.
- This can be checked in the Graph Commands tab
- Add Data Points -> Custom -> Area (or Line)
- Enter the name of the CDEF DataPoint in the Value field
- You MUST enter a RGB color in order to get a graph (00ff00)
- If you want the cur:, avg: and max: printed on the graph then add a custom GPRINT.
- All done
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