[c-nsp] MRTG problems with STM-1, STM-4 and GE line cards on GSR

[Primoz Jeroncic]

Hi everyone

I'm having some obscure problems with MRTG and specific line cards on
GSR. On fastethernet line cards I'm getting normal data, also data
for temperature, processor utilization, memory etc. are fine on all
line cards. But on Gigabitethernet, STM-1 and STM-4 line cards I'm
getting really strange graphs for link utilization.

This is sample graph for one of STM-4 port:
http://flea.softnet.si/tmp/pos60-day.png

Problem is that based on this graph, link is never over 120Mbps or
so. In reality link is around 300-400Mbps (300-400Mbps of input and
about same amount of output) and this means constantly between 300
to 400Mbps all the way through the day.

In case if it matters, here's config for this specific port:

WorkDir: /mrtg/web/xxx
Options[_]: bits,growright
Unscaled[_]: ymwd
WithPeak[_]: ymwd
XSize[_]: 600
YSize[_]: 150
MaxBytes[_]: 500000
AbsMax[_]: 12500000000

### Interface 6 >> Descr: 'POS6/0' | Name: 'PO6/0' | Ip: '' | Eth: '' ###

Target[pos60]: 24:xxx at x.x.x.x:
SetEnv[pos60]: MRTG_INT_IP="" MRTG_INT_DESCR="POS6/0"
Title[pos60]: Traffic Analysis for POS6/0
PageTop[pos60]: <H1>Traffic Analysis for POS6/0</H1>
 <TABLE>
   <TR><TD>Description:</TD><TD>POS6/0  </TD></TR>
   <TR><TD>ifName:</TD>     <TD>PO6/0</TD></TR>
 </TABLE>

Graphs look about same for all above mentioned interfaces, but holes with
"missing traffic" are not appearing at same times.

In case if anyone else had this problems and/or knows solution how to
get over this, I would really appreciate any help.

Thanks for help in advance already.

Have fun,
Primoz Jeroncic
Support - IP Connectivity & Routing
-------------------------------------------------------------------
Softnet d.o.o.  tel:  +386 1 562 31 40   |
Borovec 2       fax:  +386 1 562 18 55   |       1 + 1 = 3
1236 Trzin      primoz(at)softnet.si     | for larger values of 1
Slovenija       http://flea.softnet.si/
-------------------------------------------------------------------