[mrtg] Re: graphing the total of byte in bytes out for an interface
Alex van den Bogaerdt
alex at ergens.op.het.net
Sat Nov 16 23:34:10 MET 2002
On Fri, Nov 15, 2002 at 09:19:01AM -0500, Rich, Mark wrote:
> I've been reading through the FAQ's and lists to try to figure out how I can
> produce a graph that shows me the TOTAL use, both in and out summed up as
> one value. I've found some vague references to it being a matter of simply
> adding the reverse of an interface to a new target called total- I've tried
> a few different syntax, but can't seem to get it to work- can anyone offer
> any help?
> Target[xxx.xxx.207.252_25]: 25:read at xxx.xxx.207.252:
What is that colon at the end ?
MRTG normally graphs the IfIn and IfOut octets. You can tell MRTG to
show them the other way around by putting a negative sign in front of
Target[xxx.xxx.207.252_25]: 25:read at xxx.xxx.207.252
Target[xxx.xxx.207.252_25]: -25:read at xxx.xxx.207.252
Combined with the simple arithmetics that MRTG can do I guess the
following should work (didn't try it):
Target[xxx.xxx.207.252_25]: -25:read at xxx.xxx.207.252 + 25:read at xxx.xxx.207.252
This must be on one line and you must use the spaces around '+'.
Don't forget to adjust the MaxBytes setting. Your total amount of
bandwidth seems to be doubled and thus you should double MaxBytes.
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