Hello 
I 've to calcolate the following expression with the mrtg grapher for input 
errors and output errors:
( ifInErrors/ ifInUcastPkts + ifInNUcastPkts ) * 100
( ifOutErrors/ ifOutUcastPkts + ifOutNUcastPkts ) * 100
 
I use the following sintax:
Target[err_2]:ifInErrors.2&ifOutErrors:[EMAIL PROTECTED] * 100 / 
ifInUcastPkts.2&ifOutUcastPkts.2:[EMAIL PROTECTED] + 
ifInNUcastPkts.2&ifOutNUcastPkts.2:[EMAIL PROTECTED]  
 
Is It right?The mrtg sampled the value like zero, i use also the option 
perminute.
Another question:
can I use also the parenthesis in the expression?
 
Thanks in advance for your help
Emiliano.


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