Creating a Custom Vendor Certification › Filtering Support

Filtering Support

The Filter tag of the ExpressionGroup section is used to apply filtering on the component discovery process.

Continuing with our example, you want to monitor only active Frame Relay PVCs. You can do this by applying the filter tag to your frPVCInfoCustom custom vendor certification to monitor these specific components. Filters are added to the ExpressionGroup.

Note: You can use MVEL syntax in Filter expressions. For more information on the MVEL syntax, vendor certification utility functions, and vendor certification global variables, see the appendix in this guide.

Here is an example of what the updated frPVCInfoCustom custom vendor certification looks like. The changes that we made in this procedure are indicated in bold.

<?xml version="1.0" encoding="UTF-8" ?> 
<!-- Auto-generated by the type catalog local manager.--> 
<DataModel namespace="http://im.ca.com/certifications/snmp" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:noNamespaceSchemaLocation="SNMPCertificationFacet.xsd"> 
  <FacetType name="frPVCInfoCustom" descriptorClass="com.ca.im.core.datamodel.certs.CertificationFacetDescriptorImpl"> 
    <Documentation>Frame Relay PVC Vendor Certification</Documentation> 
    <FacetOf namespace="http://im.ca.com/core" name="Item" /> 
    <AttributeGroup name="AttributeGroup" external="true" list="true"> 
      <Documentation /> 
      <Attribute name="INDEX" type="ObjectID"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.4</Source> 
        <IsIndex>true</IsIndex> 
        <IsKey>false</IsKey> 
        <NeedsDelta>false</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitReceivedFECNs" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.4</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>true</IsKey> 
        <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitReceivedBECNs" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.5</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>true</IsKey> 
        <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitSentFrames" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.6</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>true</IsKey> 
        <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitSentOctets" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.6</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>true</IsKey> 
        <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitReceivedFrames" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.8</Source> 
       <IsIndex>false</IsIndex> 
       <IsKey>true</IsKey> 
       <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitReceivedOctets" type="Long"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.9</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>true</IsKey> 
        <NeedsDelta>true</NeedsDelta> 
      </Attribute> 
      <Attribute name="frCircuitState" type="int"> 
        <Documentation /> 
        <Source>1.3.6.1.2.1.10.32.2.1.3</Source> 
        <IsIndex>false</IsIndex> 
        <IsKey>false</IsKey> 
        <NeedsDelta>false</NeedsDelta> 
      </Attribute> 
     </AttributeGroup> 
     <Protocol>SNMP</Protocol> 
     <DisplayName>Frame Relay PVC Certification</DisplayName> 
     <Expressions> 
       <ExpressionGroup destCert="{http://im.ca.com/normalizer}frPVCInfo" name="frPVCInfoDS"> 
         <Filter>(frCircuitState==2)</Filter> 
         <Expression destAttr="Indexes">INDEX</Expression> 
         <Expression destAttr="Names">"Frame Relay " + INDEX</Expression> 
         <Expression destAttr="FECNIn">frCircuitReceivedFECNs</Expression> 
         <Expression destAttr="BECNIn">frCircuitReceivedBECNs</Expression> 
         <Expression destAttr="FramesIn">frCircuitReceivedFrames</Expression> 
         <Expression destAttr="FramesOut">frCircuitSentFrames</Expression> 
         <Expression destAttr="BytesIn">frCircuitReceivedOctets</Expression> 
         <Expression destAttr="BytesOut">frCircuitSentOctets</Expression> 
         <Expression destAttr="BitsIn">frCircuitReceivedOctets*8</Expression> 
         <Expression destAttr="BitsOut">frCircuitSentOctets*8</Expression> 
       </ExpressionGroup> 
     </Expressions> 
     <MIB>RFC1315-MIB</MIB> 
    </FacetType> 
</DataModel>

We are assuming that we made these changes after we imported the custom vendor certification. Therefore, after you make the changes, update the vendor certification.

More information:

Update a Custom Vendor Certification