Do you have any mibs installed? Usually in /usr/share/snmp/mibs. It sounds like your system can&#39;t find the MIB files, or aren&#39;t using them.<br><br>The mib files are the rules that translate the name, such as system or IP-MIB::ipAdEntIfIndex, to an OID like .1.3.1.6.1....  <a href="http://mibdepot.com">http://mibdepot.com</a> is a great place to find mibs, but you should be able to resolve system and stuff under IP-MIB without any vendor specific mibs.<br>
<br>In your snmpwalk command, try adding -m ALL to load all mibs, or passing in a directory with -M. It might be that you need to install the files. Stracing the process (strace -e trace=file indexmaker ....) might give you an idea of where it&#39;s looking for the mibs. Look for a file called IP-MIB.txt, which is where ipAdEntIfIndex is defined.<br>
<br>All that said, unless you&#39;re going to graph a couple of items and never plan to graph anything more, stay away from MRTG. Cacti is a lot friendlier. <br><br>Sean<br><br><div class="gmail_quote">On Thu, May 12, 2011 at 9:05 PM, Kevin McGregor <span dir="ltr">&lt;<a href="mailto:kevin.a.mcgregor@gmail.com">kevin.a.mcgregor@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">I&#39;m trying to set up SNMP and MRTG on my SheevaPlug computer, and I can&#39;t quite get it to work. I&#39;ve followed the guides like<div>
<a href="http://www.debianhelp.co.uk/mrtg.htm" target="_blank">http://www.debianhelp.co.uk/mrtg.htm</a> and</div>
<div><a href="http://jitamitra.blogspot.com/2009/02/snmp-and-mrtg-on-debian.html" target="_blank">http://jitamitra.blogspot.com/2009/02/snmp-and-mrtg-on-debian.html</a></div><div><br></div><div>...but the part that doesn&#39;t work is</div>

<div><font face="&#39;courier new&#39;, monospace">root@sheeva:/etc/snmp# indexmaker /etc/mrtg.cfg --columns=1 --output /var/www/mrtg/index.html</font></div><div><font face="&#39;courier new&#39;, monospace">Use of uninitialized value $first in hash element at /usr/bin/indexmaker line 353.</font></div>

<div><font face="&#39;courier new&#39;, monospace">root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex</font></div><div><font face="&#39;courier new&#39;, monospace">MIB search path: /root/.snmp/mibs:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp</font></div>

<div><font face="&#39;courier new&#39;, monospace">Cannot find module (IP-MIB): At line 0 in (none)</font></div><div><font face="&#39;courier new&#39;, monospace">IP-MIB::ipAdEntIfIndex: Unknown Object Identifier</font></div>

<div><font face="&#39;courier new&#39;, monospace">root@sheeva:/etc/snmp# snmpwalk -v 1 -c public localhost system</font></div><div><font face="&#39;courier new&#39;, monospace">system: Unknown Object Identifier (Sub-id not found: (top) -&gt; system)</font></div>

<div><br></div><div>Any suggestions?</div><div><br></div><font color="#888888"><div>Kevin</div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Sean Walberg &lt;<a href="mailto:sean@ertw.com" target="_blank">sean@ertw.com</a>&gt;    <a href="http://ertw.com/" target="_blank">http://ertw.com/</a><br>