[mrtg] Weired behavior of MRTG

Peter grshadowgr at yahoo.com
Mon Sep 10 12:58:32 CEST 2007

Dear all

I'm using mrtg 2.11.1 and i have the following

As you can see in the attached image (img0.png,
img0-w.png), every day at the same time period i have
this strange increase and decrease of the bandwidth. 

This is not normal, because when i'm checking each
interface separately (img1.png, img2.png, img3.png),
it seems that everything works ok. I have also
crosschecked with the other end (my customer) and he
doesn't see any problem on his graphs...

Bellow you can find my cfg file which produced the
img0.png and img0-w.png

WorkDir: /usr/local/apache/htdocs/mrtg/cust/otenet

Options[_]: growright, bits, transparent, noborder,
nobanner, nolegend

ThreshDir: /var/log/mrtg-thresh

### Interface 42 ###

\GigabitEthernet4/0/0:mycommunicty at ath-CiscoRouter-02:::::2
\GigabitEthernet0/0/0:mycommunicty at ath-CiscoRouter-03:::::2
\GigabitEthernet1/0/0:mycommunicty at ath-CiscoRouter-04:::::2
MaxBytes[ath-CiscoRouter-02_XXX_all3]: 3737500000
ThreshMaxO[ath-CiscoRouter-02_XXX_all3]: 1437500000
Title[ath-CiscoRouter-02_XXX_all3]: XXX ALL
PageTop[ath-CiscoRouter-02_XXX_all3]: <H1>XXX ALL</H1>
   <TR><TD>Customer ID</TD>    
   <TR><TD>Service ID</TD> <TD>XXXX</TD></TR>
   <TR><TD>Description:</TD><TD>XXX_all *** 3x10GB ***
   <TR><TD>Speed:</TD>  <TD>30 Gb</TD></TR>


Today, i removed the Threshold feature (i have placed
it at 11.5GB/sec) and i will monitor it, but i don't
think that the problem begins from the Trheshold
checking... Any advise? does anyone else faced the
same problem or a similar issue?

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