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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'>From the cfgmaker manual.<o:p></o:p></span></font></p>
<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'>The next example demonstrates how to use the <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>--community</span></font></b></strong>, <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>--snmp-options</span></font></b></strong> and <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>--dns-domain</span></font></b></strong> to make the command line simpler. All the equipment will use the community <i><span
style='font-style:italic'>hidden</span></i>, except for the ppp-server which use community <i><span
style='font-style:italic'>access</span></i>. All equipment uses these SNMP options: <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>1s timeout</span></font></b></strong>, <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>1 retry</span></font></b></strong> and <strong><b><font
face="Courier New"><span style='font-family:"Courier New"'>SNMP version 2</span></font></b></strong><o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>cfgmaker --global "WorkDir: /home/tobi" \<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> --global "Options[_]: growright,bits" \<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> --dns-domain=place.xyz \<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> --community=hidden \<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> --snmp-options=::1:1::2<o:p></o:p></span></font></pre>
<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'><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'>So you can limit your retries and the
timeout. The cfgmaker default is :::::2.<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'>From the references manual.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>timeout<o:p></o:p></span></font></p>
<p style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>initial timeout for SNMP queries, in seconds (default:
2.0)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>retries<o:p></o:p></span></font></p>
<p style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>number of times a timed-out request will be retried
(default: 5)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>backoff<o:p></o:p></span></font></p>
<p style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>factor by which the timeout is multiplied on every
retry (default: 1.0).<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'><o:p> </o:p></span></font></p>
<div>
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<p class=MsoNormal><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'> Mersberger,
Robert [mailto:robert.mersberger@goldenliving.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, April 17, 2008
12:12 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Anson Rinesmith; Brad Lodgen;
mrtg@lists.oetiker.ch<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mrtg] Large Master
Config Vulnerability</span></font><o:p></o:p></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>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>I have all my configs in one directory and
run mrtg as a cron job with the following script.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>#! /bin/bash</span></font><o:p></o:p></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>
</div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>for fn in /etc/mrtg/*.cfg; do<br>
env LANG=C /usr/bin/mrtg
"$fn" &<br>
done</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Maybe this will would for you. I
have been down the include route and I agree it does cause problems.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<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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face="Times New Roman"><span style='font-size:12.0pt'>
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</span></font></div>
<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 [mailto:mrtg-bounces@lists.oetiker.ch] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Anson Rinesmith<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, April 17, 2008
11:47 AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'Brad Lodgen';
mrtg@lists.oetiker.ch<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [mrtg] Large Master
Config Vulnerability</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>You could always limit the number of
retries.<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'>A second option is to break up the master
config file into other smaller files, and therefore when something breaks only
that smaller portion is broken and the rest of your polls proceed without
error.<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>
<div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal><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 [mailto:mrtg-bounces@lists.oetiker.ch] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Brad Lodgen<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, April 17, 2008
11:39 AM<br>
<b><span style='font-weight:bold'>To:</span></b> mrtg@lists.oetiker.ch<br>
<b><span style='font-weight:bold'>Subject:</span></b> [mrtg] Large Master
Config Vulnerability</span></font><o:p></o:p></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>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi everyone,<br>
<br>
I'm running a master config with hundreds of include lines and thousands of
targets. This type of setup is vulnerable to errors in config files and/or
changes made in the field not being immediately updated within the configs. If
there are a few errors or changes out in the field to ports causing them to
become 'unpollable', it causes the MRTG polling interval to go over five minutes
because it's retrying those interfaces. At the moment, with only about 30 error
lines in my log(equating to about 15 interfaces/targets), it's causing MRTG to
take 7-9 minutes to complete polling. As this is a very small percentage
compared to the total amount of targets being polled, I'm trying to figure out
a way to get around this, if possible, or at least to minimize the effects.<br>
<br>
Is anyone else running a system like this or does anyone have suggestions to
try?<br>
<br>
Thanks in advance for any help!<br>
Brad<o:p></o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Please
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CONFIDENTIAL NOTICE:<br>
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