[mrtg] Re: Sum of several links...

[Daniel J McDonald]

Yes you can add to your hearts content, but be forewarned that roll-over
checking is performed after the addition, so the chance of skewed data is
much higher with more links (or with faster links).

The way to avoid that is to poll all of the data individually into RRDtool
collectors and use RRDGRAPH aggregation functions to display the data that
you want.

Daniel J McDonald, CCIE 2495, CNX
Principal Network Specialist
Digicon Technologies
http://www.digicontech.com

Digicon, a Cisco Partner, Silver Certified.


Paul noted:

>Yes.  You can add to your heart's content.  RTM.
>There's a place on the mrtg site that explains
>exactly how to add values together.  Basically, you add
like so:

oid1&oid2:community:x.x.x.x + oid3&oid4:community:x.x.x.x

this will give you two values: oid1 + oid3 and oid2 + oid4.

Paul

>>> "Cihan Subasi (Garanti Teknoloji)" <CihanS at garanti.com.tr> 10/01/01
09:14AM >>>

	Is it possible to sum up some of my links (e.g. all my internet
peerings) and graph them on a different graph? Is there any contribution for
that? thanks...

*******************************************************
Cihan Subasi
Garanti Technology
Internet Services Manager
Work :	(90) (212) 478 3426
GSM :	(90) (533) 270 1915
http://www.garantitechnology.com
mailto:cihans at garanti.com.tr


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