Sniffer Adaptive Application Analyzer: Adaptive Mode ... - NetScout

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EARLY FIELD TRIAL Chapter 9 About Reusing Network Objects 228 Sniffer Adaptive Application Analyzer When Expert reuses the memory associated with less interesting network objects, it does so using a smart algorithm that, in effect, allows it to forget outdated network information. The list below summarizes the types of network objects the Expert does and does not reuse. Expert does not reuse: Network objects that have symptoms or diagnoses associated with them. A network object currently highlighted in the Expert window. Expert does reuse: Network objects with ten or fewer associated frames and no associated errors. Alarm Maximum When the maximum number of alarms are reached in the Expert database, Expert will either recycle the oldest and lowest priority alarms (if the Recycle Alarms option is selected) or stop creating new alarms. The default is 1000. The range is 0 to 99999. Data Update Rate Specify how often the Expert Displays are updated with new data, as well as the delay between resorting the Expert’s database of objects and refreshing the Expert’s summary display. To configure the Expert Objects tab: 1 Double click the Analyze column to activate the cell’s drop down menu. Select Yes to activate the layer or No to exclude the layer from Expert processing. 2 Double click the Max Objects column to specify the maximum number of objects that can be created in the Expert database for each activated layer. 3 In the Est. Memory field, enter the estimated amount of memory needed for the number of objects specified for each layer shown. 4 For the Recycle Expert Objects option: Check this option if you want Expert to create new objects by overwriting older objects when Expert runs out of memory. Or
EARLY FIELD TRIAL Alarms Expert Analysis Uncheck this option if you want Expert to stop creating new objects and continue interpreting traffic according to information already in the database. 5 In the Alarms area: Enter the maximum number of alarms that can be created in the Expert database. NOTE: When the maximum number is reached, the Expert will either recycle the oldest and lowest priority alarms (if the Recycle Alarms option is selected) or stop creating new alarms. 6 In the Data Updated Rate and Resorting Rate fields, specify how often you would like Expert to update with new data. 7 Click OK. Configure alarms, thresholds, and severity using the Alarms tab. Expert thresholds determine whether the Expert generates a symptom or a diagnosis (also called an alarm) based on a given network event. Figure 9-5. Alarms Tab User’s Guide 229
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