This script parses the results of the SNMPWalk to retrieve the value of SM_SerialNumber.

To create the script:

  1. Start editing the ASL file.

                   # 
		
               cd
               BASEDIR
               /smarts/bin
               # 
		
               sm_edit --create rules/discovery/dynmodel-sn.asl

  2. Type the following lines into the dynmodel-sn.asl file:

                   /* Create a handle to the SNMP Agent object */
                agentObj=object(AgentName);
               
                /* Test that the results are not null */
                if (agentObj->isNull()  ) {
                 print("***********Error in dynmodelsn.asl********");
                 stop();
                 }
                /* DEBUG= TRUE; */
               
               
                /* Get a handle to the actual device by using the getSystem
               
                operation available through the agent object handle */
                nodeObj=agentObj->getSystem();
                print("NODE:".nodeObj->DisplayClassName);
                START{
                 SERIAL  
                }
                /* fs is need as field separators in this parsing.*/
                /* This OID matches what was defined in the import file */
                serialNumberOID {
                 ".1.3.6.1.4.1.9.3.6.3"
                }
                SERIAL{
                 oid:{ serialNumberOID.".".integer }  fs
                 serial:word fs
                 }
                 do{
                  /* As the snmpwalk returns a value without knowing the
               
                 type, you need to use hexToString to convert the
                   * result from hex to ASCII string */
                  serial=hexToString(serial);
               
                 /* Assign the results to the new SM_SerialNumber
               
                 attribute */
                 nodeObj->SM_SerialNumber=serial;
               
                stop();
                }

  3. Save and close the dynmodel-sn.asl file.

    The dynmodel-sn.asl file is saved into the BASEDIR/smarts/local/rules/discovery directory.