[mrtg] Re: How to alter the bandwidth scaling on graphs?

Mon Jun 17 20:41:34 MEST 2002

>From my experience, changing things like growright etc... takes a collection
period or two to update the graph.  This is the nature of MRTG.  It doesn't
update the weekly and monthly graphs every polling cycle.  It only updates
them as the next period of data completes (30 minutes for weekly, 2 hours for
monthly, 1 day for yearly).

Your graphs will likely auto-correct themselves if you wait until tomorrow.

Corey Smith

-----Original Message-----
From: Rupert Heesom [mailto:raheesom at awr.org]
Sent: Monday, June 17, 2002 2:30 PM
To: 'Garry Cook'
Cc: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: How to alter the bandwidth scaling on graphs?

Thanks for your email, Garry.

I've taken your advice, but things are not quite working correctly yet!

Below is most of my CFG file --

As you can see, I've got the MaxBytes & AbsMax converted to Bits / sec
numbers (took me a while to realise that!).

I've also been playing with the global defaults, trying to get some,
well, global defaults!

What I've got so far, is that the Daily graph (1st graph) displays fine.
Correct orientation (growright), correct scale (bits/s), correct graph Y
axis labelling (bits/s).

The Weekly & Months graphs do their own thing though!  They display in
Bytes (not bits), both is figures & graph labelling.

How come there's differences in the graphs when each interface has the
same parameters, and these cover all the different time period graphs?

Is it something to do with the SNMP data available?  Ie, the longer time
frame graphs not displaying correctly because they haven't got anything
to display and are therefore not reading the CFG file?

I'm mystified!!

---->>>  I've just fiddling a little more (with global defaults), and
suddenly the weekly graph is displaying correctly (whichever way I set
the CFG file defaults) so it looks like it's something to do with the
graphs reading the CFG file or not!

I find that strange!!
---->>>

========================================================================
====
#  or for NT
WorkDir: d:\Inetpub\wwwroot\mrtg

### Run MRTG continuously ###

RunAsDaemon: yes

### Global Defaults

#  to get bits instead of bytes and graphs growing to the right
Options[_]: growright, bits
# Options[193.133.125.222_1]: growright, bits
# Options[193.133.125.222_2]: growright, bits

######################################################################
# System: advaworl01-gw.awr.org
# Description: Cisco Internetwork Operating System Software
#          IOS (tm) 2500 Software (C2500-I-L), Version 11.3(3), RELEASE
SOFTWARE (fc1)
#          Copyright (c) 1986-1998 by cisco Systems, Inc.
#          Compiled Mon 20-Apr-98 18:23 by phanguye
# Contact:
# Location:
######################################################################

### Interface 1 >> Descr: 'Ethernet0' | Name: 'Et0' | Ip:
'193.133.125.222' | Eth: '00-30-94-e6-25-d3' ###

Target[193.133.125.222_1]: 1:AWEN-UK at 193.133.125.222:
SetEnv[193.133.125.222_1]: MRTG_INT_IP="193.133.125.222"
MRTG_INT_DESCR="Ethernet0"
MaxBytes[193.133.125.222_1]: 64000
AbsMax[193.133.125.222_1]: 64000
Unscaled[193.133.125.222_1]: dwm
Suppress[193.133.125.222_1]: y
Title[193.133.125.222_1]: Traffic Analysis for 1 --
advaworl01-gw.awr.org
PageTop[193.133.125.222_1]: <H1>Traffic Analysis for 1 --
advaworl01-gw.awr.org</H1>
 <TABLE>
   <TR><TD>System:</TD>     <TD>advaworl01-gw.awr.org in </TD></TR>
   <TR><TD>Maintainer:</TD> <TD></TD></TR>
   <TR><TD>Description:</TD><TD>Ethernet0  </TD></TR>
   <TR><TD>ifType:</TD>     <TD>ethernetCsmacd (6)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Et0</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>512 kBits/s</TD></TR>
   <TR><TD>Ip:</TD>         <TD>193.133.125.222
(advaworl01-gw.pipex.net)</TD></TR>
 </TABLE>

### Interface 2 >> Descr: 'Serial0' | Name: 'Se0' | Ip: '' | Eth: '' ###

Target[193.133.125.222_2]: 2:AWEN-UK at 193.133.125.222:
SetEnv[193.133.125.222_2]: MRTG_INT_IP="" MRTG_INT_DESCR="Serial0"
MaxBytes[193.133.125.222_2]: 64000
AbsMax[193.133.125.222_2]: 64000
Unscaled[193.133.125.222_2]: dwm
Suppress[193.133.125.222_2]: y
Title[193.133.125.222_2]: Traffic Analysis for 2 --
advaworl01-gw.awr.org
PageTop[193.133.125.222_2]: <H1>Traffic Analysis for 2 --
advaworl01-gw.awr.org</H1>
 <TABLE>
   <TR><TD>System:</TD>     <TD>advaworl01-gw.awr.org in </TD></TR>
   <TR><TD>Maintainer:</TD> <TD></TD></TR>
   <TR><TD>Description:</TD><TD>Serial0  </TD></TR>
   <TR><TD>ifType:</TD>     <TD>ppp (23)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Se0</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>512 kBits/s</TD></TR>
 </TABLE>

========================================================================
=============

Regs
Rupert Heesom
Asst Distribution Engineer
Adventist World Radio

-----Original Message-----
From: Garry Cook [mailto:Garry.Cook at mactec.com]
Sent: 17 June 2002 14:56
To: Rupert Heesom
Subject: RE: [mrtg] How to alter the bandwidth scaling on graphs?

Try this:

### Interface 1 >> Descr: 'Ethernet0' | Name: 'Et0' | Ip:
'193.133.125.222' | Eth: '00-30-94-e6-25-d3' ###
Target[193.133.125.222_1]: 1:AWEN-UK at 193.133.125.222:
SetEnv[193.133.125.222_1]: MRTG_INT_IP="193.133.125.222"
MaxBytes[193.133.125.222_1]: 64000
AbsMax[193.133.125.222_1]: 64000
Unscaled[193.133.125.222_1]: dwmy
Title[193.133.125.222_1]: Traffic Analysis for 1 --
advaworl01-gw.awr.org
PageTop[193.133.125.222_1]: <H1>Traffic Analysis for 1 --
advaworl01-gw.awr.org</H1>

This should set the max Bandwidth to 512k, draw a red line at said bw,
and ensure that none of your graphs scale.

Garry W. Cook, CCNA
Network Infrastructure Manager
MACTEC, Inc. - http://www.mactec.com/
303.308.6228 (Office) - 303.881.5157 (Mobile)

> The bandwidth scaling on my graphs seems to be set dynamically.
>
> I'm hoping to set the bandwidth to 100% of 512k (our
> dedicated bandwidth
> size).
>

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