[mrtg] Another Oddball Configuration Question

Larry Sheldon lsheldon at creighton.edu
Thu Nov 30 03:26:00 MET 2000

I have what I thought was a simple thing to ask MRTG to do.

But after several trips through the documents I know to look in, I can't
find out how to do it--indeed I am no wondering if it is possible, 
although I would swear I have done something like this in the past.

The problem--to graph as "output" the sum of the "inputs" from several
interfaces on several "routers" (3com 3500's, actually) and as "input"
the "ouput" of a single interface on a real router.

(As I typed that, I'm not sure it made sense to me--the point is to relate
the traffic from several sources to its destination, the Internet.  I intend
to make a second graph showing the relationship of traffic from the Internet
to the outbound traffic to those same locations.  Still not sure if it makes

The most recent target line reads:

Target[res.halls.internet-in.comp]: ifInOctets.8:public at creighton-main-2 + ifInOctets.11:public at creighton-main-1 + ifInOctets.12:public at creighton-main-1 + ifInOctets.13:public at creighton-main-1&ifOutOctets.1:public at creighton-internet

I get several whines from MRTG that indicates it is not parsing that the way
I thought it would--if the errors would be useful I can pass thme along too.

As usual, I will be grateful for help, including RTFM refences to specifics
as to the TM that I should FR.
.                                                                       .
- L. F. (Larry) Sheldon, Jr.                                            -
. Unix Systems and Network Administration                               .
- Creighton University Computer Center-Old Gym                          -
. 2500 California Plaza                                                 .
- Omaha, Nebraska, U.S.A.  68178       Two identifying characteristics  -
. lsheldon at creighton.edu                  of System Administrators:     .
- 402 280-2254 (work)                Infallibility, and the ability to  -
. 402 681-4726 (cellular)               learn from their mistakes.      .
- 402 332-4622 (residence)                                              -
. http://www.creighton.edu/~lsheldon    Adapted from Stephen Pinker     .

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