[mrtg] Re: mrtg newbye problem

[Daniel J McDonald]

On Tue, 2006-03-28 at 14:26 +0100, Scott_Rochford at DELL.com wrote:
> > > I was able to configure kb/s for each server but how can put
> together
> > > both configuration so that I can have a global view of bandwith
> > > usage ??? 
> > if you are monitoring the servers or the switch that they attach to,
> > it's pretty simple:  use rrdtool as the backend, routers2.cgi as the
> > front end, and set up a stacked graph.
> 
> I've not used MRTG with SNMP much, but... can't you just put a '+'
> between the two SNMP parameter identifiers to add them together?
> 

You can, but rollover processing is not as accurate with two added
values as it is with one.  If you have two concurrent rollovers it will
cause a spike or dip.  Individual values added after rollover processing
are much more accurate.

-- 
Daniel J McDonald, CCIE # 2495, CNX, CISSP # 78281
Austin Energy
dan.mcdonald at austinenergy.com


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