[mrtg] Re: How to sum up In & Out

[Ripley, Scott]

The simplest answer may also be the best answer...

I wanted to graph certain DNS statistics on our servers, so I wrote a small
script to do the math I wanted and simply passed those statistics to MRTG
manually. It was tricky to learn but now I know how to graph anything I want
in MRTG, not just SNMP devices.

Scott Ripley
DNS Administrator, House Information Resources
202.226.2833 - mailto:scott.ripley at mail.house.gov



-----Original Message-----
From: David Sawyer [mailto:david.sawyer at uk.mckhboc.com]
Sent: Wednesday, March 28, 2001 5:02 AM
To: 'Vargas Miguel'; 'Paul C. Williamson';
Shoaib.Muhammad at fronteracorp.com; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: How to sum up In & Out
Importance: Low



Shoaib doesn't want to plot the percent of in to out traffic, I think he
wants to plot in plus out.

Try adding the two values together in the target.
You will have to add the expression twice (some people add a null value OID)
to satisfy the two target rule.
I've never needed to do this so I'm not too sure on the syntax, it's
either...

Target[1]: OID1.interface + OID2.interface:public at ip & 
                OID1.interface + OID2.interface:public at ip
or

Target[1]: OID1.interface:public at ip + OID2.interface:public at ip &
                OID1.interface:public at ip + OID2.interface:public at ip

But I think it's the last one.

HTH
Dave

> -----Original Message-----
> From:	Vargas Miguel [SMTP:mvargas at tnsi.com]
> Sent:	Tuesday, March 27, 2001 9:45 PM
> To:	'Paul C. Williamson'; Shoaib.Muhammad at fronteracorp.com;
> mrtg at list.ee.ethz.ch
> Subject:	[mrtg] Re: How to sum up In & Out
> 
> 
> That's almost correct.  mrtg in it's native form has a third line called
> dorelpercent, it shows in/out.  You could try to modify the formula in
> rateup.c (around line 525) to make it (outr+inr)/maxvalue*100, and then
> recompile.  I tried to do this but I couldn't figure out what variable had
> the maxvalue. 
> 
> 
> 
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