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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If you want to graph negative values, you
will need to :<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='mso-list:Ignore'>1)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Use MRTG with the RRDtool backend and appropriate frontend (eg
routers2, 14all, mrtg-rrd)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='mso-list:Ignore'>2)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Manually use rrdtune to set the minimum value for the rrd file (it
defaults to 0 and cannot be changed via the MRTG .cfg file)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In addition, you will need to use RRDtool
if you want to poll decimal values – native MRTG works with integer
values only, although it will of course use decimals to calculate rates.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Steve<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
mrtg-bounces@lists.oetiker.ch [mailto:mrtg-bounces@lists.oetiker.ch] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Sean Cheesman<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, 23 April 2009
12:22 a.m.<br>
<b><span style='font-weight:bold'>To:</span></b> Kashif Siddiq Patoli; <st1:PersonName
w:st="on">mrtg@lists.oetiker.ch</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [mrtg] Differnet Poll
Values for Similar Type of Interfaces</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=black face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:black'>You can't poll negative values.
Maybe someone can offer an alternative, but MRTG itself cannot handle a
negative polling value.</span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
mrtg-bounces@lists.oetiker.ch [mrtg-bounces@lists.oetiker.ch] On Behalf Of
Kashif Siddiq Patoli [patoli@gmail.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, April 22, 2009
4:58 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">mrtg@lists.oetiker.ch</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [mrtg] Differnet Poll
Values for Similar Type of Interfaces</span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I am observing differnet poll values for POS 0/0/0/0 and POS 0/1/0/0
while monitoring optical power (DOM). The output shows following tx/rx power<br
clear=all>
<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1). Tx power = 0.4930 mW, -3.1 dBm<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2). Tx power = 0.5400 mW, -2.7 dBm<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The polled values are:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>For 1), <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1240390321 2538 2538<br>
1240390321 2538 2538 2538 2538<br>
1240390019 2538 2538 2538 2538<br>
1240389900 2538 2538 2538 2538<br>
1240389600 2538 2538 2538 2538<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>For 2),<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1240390321 45 45<br>
1240390321 45 45 45 45<br>
1240390019 45 45 45 45<br>
1240389900 45 45 45 45<br>
1240389600 45 45 45 45<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Plz suggest if there is something wrong in the cfg as both the
interfaces are using same OID on the same router.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Target[optical_power]:
1.3.6.1.4.1.9.9.91.1.1.1.1.4.34&1.3.6.1.4.1.9.9.91.1.1.1.1.4.34:public@a.b.c.d<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>YLegend[optical_power]:
dB<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Options[optical_power]:
gauge, noi, nopercent, growright<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>MaxBytes[optical_power]:
7000<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>factor[optical_power]:
-0.001<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>YTics[optical_power]:
7<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>YTicsFactor[optical_power]:
0.001<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>ShortLegend[optical_power]:
dB<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Legend1[optical_power]:
dB<o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>Title[optical_power]:
Optical Power Measurement for STM-64 <o:p></o:p></span></font></p>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>PageTop[optical_power]:
<H1>Optical Power Measurement for STM-64 </H1><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-- <br>
Kashif <o:p></o:p></span></font></p>
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