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<html>

<head>
<meta http-equiv="Content-Language" content="en">
<title>Understanding rsyslog queues</title>
</head>

<body>

<h1>SNMP Output Module</h1>
<p><b>Module Name:&nbsp;&nbsp;&nbsp; omsnmp</b></p>
<p><b>Author: Andre Lorbach &lt;alorbach@adiscon.com&gt;</b></p>
<p><b>Description</b>:</p>
<p>Provides the ability to send syslog messages as an SNMPv1 &amp; v2c traps. By 
default, SNMPv2c is preferred. The syslog message is wrapped into a OCTED 
STRING variable, by default with the OID i.o.d.internet.private.enterprises. 
This module uses the <a target="_blank" href="http://net-snmp.sourceforge.net/">
NET-SNMP</a> library. In order to compile this module, you will need to have the
<a target="_blank" href="http://net-snmp.sourceforge.net/">NET-SNMP</a> 
developer (headers) package installed. </p>
<p>&nbsp;</p>
<p><b>Action Line:</b></p>
<p>%omsnmp% without any further parameters.</p>
<p>&nbsp;</p>
<p><b>Configuration Directives</b>:</p>
<ul>
	<li><strong>$actionsnmptransport </strong>(This parameter is optional, the 
	default value is &quot;udp&quot;)<br>
	<br>
	Defines the transport type you wish to use. Technically we can support all 
	transport types which are supported by NET-SNMP. <br>
	To name a few possible values: <br>
	<br>
	udp, tcp, udp6, tcp6, icmp, icmp6 ...<br>
	<br>
	Example: <strong>$actionsnmptransport udp<br>
	</strong></li>
	<li><strong>$actionsnmptarget</strong><br>
	<br>
	This can be a hostname or ip address, and is our snmp target host. This 
	parameter is required, if the snmptarget is not defined, nothing will be 
	send. <br>
	<br>
	Example: <strong>$actionsnmptarget server.domain.xxx</strong><br>
	</li>
	<li><strong>$actionsnmptargetport </strong>(This parameter is optional, the 
	default value is &quot;162&quot;)<br>
	<br>
	The port which will be used, common values are port 162 or 161. <br>
	<br>
	Example: <strong>$actionsnmptargetport 162</strong><br>
	</li>
	<li><strong>$actionsnmpversion </strong>(This parameter is optional, the 
	default value is &quot;1&quot;)<br>
	<br>
	There can only be two choices for this parameter for now. <br>
	0 means SNMPv1 will be used.<br>
	1 means SNMPv2c will be used. <br>
	Any other value will default to 1. <br>
	<br>
	Example: <strong>$actionsnmpversion 1</strong><br>
	</li>
	<li><strong>$actionsnmpcommunity </strong>(This parameter is optional, the 
	default value is &quot;public&quot;)<br>
	<br>
	This sets the used SNMP Community.<br>
	<br>
	Example:<strong> $actionsnmpcommunity public</strong><br>
	</li>
	<li><strong>$actionsnmpsyslogmessageoid </strong>(This parameter is 
	optional, the default value is &quot;1.3.6.1.4.1&quot; which means &quot;i.o.d.internet.private.enterprises&quot;)<br>
	<br>
	This OID will be used as a variable, type &quot;OCTET STRING&quot;. This variable will 
	contain the full syslog message including syslog header. I also recommend to 
	use the default value here unless you require to use a different OID. <br>
	<br>
	Example: <strong>$actionsnmpsyslogmessageoid 1.3.6.1.4.1</strong><br>
	</li>
	<li><strong>$actionsnmpenterpriseoid </strong>(This parameter is optional, 
	the default value is &quot;1.3.6.1.4.1.3.1.1&quot; which means &quot;enterprises.cmu.1.1&quot;)<br>
	<br>
	Customize this value if needed. I recommend to use the default value unless 
	you require to use a different OID. <br>
	This configuration parameter is used for <strong>SNMPv1</strong> only. It 
	has no effect if <strong>SNMPv2</strong> is used. <br>
	<br>
	Example: <strong>$actionsnmpenterpriseoid 1.3.6.1.4.1.3.1.1 </strong><br>
	</li>
	<li><strong>$actionsnmpspecifictype </strong>(This parameter is optional, 
	the default value is &quot;0&quot;)<strong> </strong><br>
	<br>
	This is the specific trap number. This configuration parameter is used for
	<strong>SNMPv1</strong> only. It has no effect if <strong>SNMPv2</strong> is 
	used. <br>
	<br>
	Example: <strong>$actionsnmpspecifictype 0</strong><br>
	</li>
	<li><strong>$actionsnmptraptype</strong> (This parameter is optional, the 
	default value is &quot;6&quot; which means SNMP_TRAP_ENTERPRISESPECIFIC) <br>
	<br>
	There are only 7 Possible trap types defined which can be used here. These 
	trap types are: <br>
	0 = SNMP_TRAP_COLDSTART<br>
	1 = SNMP_TRAP_WARMSTART<br>
	2 = SNMP_TRAP_LINKDOWN<br>
	3 = SNMP_TRAP_LINKUP<br>
	4 = SNMP_TRAP_AUTHFAIL<br>
	5 = SNMP_TRAP_EGPNEIGHBORLOSS<br>
	6 = SNMP_TRAP_ENTERPRISESPECIFIC<br>
	<br>
	Any other value will default to 6 automatically. This configuration 
	parameter is used for <strong>SNMPv1</strong> only. It has no effect if
	<strong>SNMPv2</strong> is used. <br>
	<br>
	Example: <strong>$actionsnmptraptype 6</strong><br>
	</li>
</ul>
<p>&nbsp;</p>
<p><b>Caveats/Known Bugs:</b></p>
<p><b>Sample:</b></p>
<p>The following commands send every message as a snmp trap.</p>
<textarea rows="10" cols="60">$ModLoad omsnmp.so

$actionsnmptransport udp
$actionsnmptarget localhost
$actionsnmptargetport 162
$actionsnmpversion 1
$actionsnmpcommunity public

*.* :omsnmp:
</textarea>

<p>[<a href="rsyslog_conf.html">rsyslog.conf overview</a>] [<a href="manual.html">manual 
index</a>] [<a href="http://www.rsyslog.com/">rsyslog site</a>]</p>
<p><font size="2">This documentation is part of the
<a href="http://www.rsyslog.com/">rsyslog</a> project.<br>
Copyright &copy; 2008 by <a href="http://www.gerhards.net/rainer">Rainer Gerhards</a> and
<a href="http://www.adiscon.com/">Adiscon</a>. Released under the GNU GPL 
version 3 or higher.</font></p>

</body>

</html>