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Peformance Monitor

Monitor net-snmp "extend" directive

Peformance Monitor posted 11/5/09 by Tom Gebhardt8262

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Name:

Monitor net-snmp "extend" directive

Description:

The net-snmp "extend" directive, in snmpd.conf, causes a new mib root to occur at nsExtensions.nsExtendObjects where the the results of individual "extend names" are stored with ascii->dotted-decimal names (as an instance of nsExtendOutput1Line). This script is an example of how to "find" the appropriate nsExtendOutput1Line instance (which is the output value of these extend commands) by only specifying the extend name via "var extend_name".

Language:

JScript

Code:

// Checks content of nsExtendOutput1Line mib for a particular net-snmp "extend" directive in snmpd.conf
//
var nsExtendObjects = "1.3.6.1.4.1.8072.1.3.2";
var nsExtendOutput1Line = nsExtendObjects + ".3.1.1"

// Following is the name specified on the "extend" directive.  It needs to be converted to
// dotted-decimal representation of the ASCII characters
var extend_name = "numconnects2";
var extend_name_oid="12.";
for (i=0;i < extend_name.length; i++) {
    extend_name_oid += extend_name.charCodeAt(i) + '.';
}
extend_name_oid = extend_name_oid.substr(0, extend_name_oid.length - 1);
var result_oid = nsExtendOutput1Line + "." + extend_name_oid; 
Context.LogMessage("result_oid=" + result_oid);


var oSnmpRqst = new ActiveXObject("CoreAsp.SnmpRqst"); 
var oComResult = oSnmpRqst.Initialize(Context.GetProperty("DeviceID"));
if (oComResult.Failed) {
    Context.LogMessage("SNMP Initialize Failed:'" + oComResult.GetErrorMsg + "'");
} else {
    var oSnmpResponse = oSnmpRqst.Get(result_oid);
    if (oSnmpResponse.Failed) {
        Context.LogMessage("GET FAILURE:'" + oSnmpResponse.GetErrorMsg + "', MIB:'" + result_oid + "'");
    } else {
        Context.SetValue(oSnmpResponse.GetValue);
    }
}

Disclaimer:

All scripts found on wugSpace are provided as-is with no warranty or guarantee. These scripts are not supported by Ipswitch Technical Support. If you have a problem with this script, please ask any questions in the comments.

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