In this example, the same dynamic model is loaded into several Domain Managers, each starting with a different --conf directory. Instead of copying the same compiled dynamic model file (.ldm) to each BASEDIR/smarts/local/model/<conf> directory, one single copy is created and compiled in BASEDIR/smarts/local/model. Each of the Domain Managers is then started with the --dynamic command line option to pull the compiled dynamic model file from BASEDIR/smarts/local/model.

To create the dynamic model:

  1. Create and edit a new file in the BASEDIR/smarts/local/model directory. Type the following at a command prompt:

                   # 
		
               BASEDIR
               /smarts/bin/sm_edit --create model/Example3.mdl

  2. Refine the setting class that sets the default value for the alarm threshold. Type the following lines into the Example3.mdl file:

                   refine interface NetworkAdapter_Performance_Setting
               {
                       attribute float [0 .. 100] TS_OverrunThreshold
                       "Acceptable upper threshold for Overruned packets, "
                       "expressed as a percentage of the total number of input packets."
                       = 10;
               }

  3. Refine the Interface_Performance_CiscoRouter_Ethernet instrumentation class that will be used to poll for the attribute. Type the following lines into the Example3.mdl file:

                   refine interface Interface_Performance_CiscoRouter_Ethernet
               {
               attribute float TS_OverrunThreshold
               "The upper threshold for Overrun packet errors expressed as a percentage"
               "of the total number of output packets."
               = 10;
               instrument SNMP {
               TS_locIfInOverrun = "1.3.6.1.4.1.9.2.2.1.1.14"
               };
               readonly instrumented attribute int TS_locIfInOverrun
               "The number of overrun errors.";
               readonly computed attribute float TS_locIfInOverrunRate
               = rate(TS_locIfInOverrun, PollingInterval);
               computed attribute float TS_OverrunErrorRate
               "The rate of ignored Overrun packets expressed in packets"
               "per second."
               = TS_locIfInOverrunRate;
               #pragma Uses Propagation
               readonly computed attribute float TS_OverrunErrorPct
               "The rate of Overruned input packets expressed as a percentage"
               "of total input packets."
               = (TS_OverrunErrorRate / (InputPacketRate + 0.001)) * 100;
               event TS_HighOverrunRate
               "Indicates that the percentage of packets with Overrun errors exceeds OverrunErrorThreshold"
               = if NetworkAdapterOperational && (TS_OverrunThreshold < 100) && (MaxSpeed > 0)
               check (TS_OverrunErrorPct > TS_OverrunThreshold);
               export TS_HighOverrunRate;
               }
TS_OverrunErrorPct > TS_OverrunThreshold
if NetworkAdapterOperational and (TS_OverrunThreshold < 100) and (MaxSpeed > 0)

  4. Save the Example3.mdl file.

    The file is saved in the BASEDIR/smarts/local/model directory.