Management Process definitions generally consists of two different types, depending on how the information collected are handled afterwards.
The two types are; a Separated Sampling type process and a Back-to-back Sampling process. Separated Sampling type simply collects the data at consecutive but equal intervals and subtracts (when necessary) data values collected in the first poll from the second poll and waits before restarting the same process again. Back-to-back Sampling process however while also collects the data at consecutive but equal intervals and subtracts (when necessary) data values collected in the first poll from the second poll; it puts the values of the second poll into the corresponding objects of the first poll and goes and collects the next set as the second poll values and so on.
Any Management Process would have to go through two essential tasks to run correctly. The first task is the Initialization task and the second is the Iterative task. The initialization task is more apparent in the Back-to-back Sampling process type, and it is used to populate the Management Process with the First-Run values of all or some of the managed objects depending on the type of each object and how it relates to the technology being managed by the particular process. The iterative task is executed with each iteration of the Management Process and its frequency is determined and modified in order to improve the performance indicators of the overall process. The initialization task should not be executed with each iteration of the process.
The SISL program maintains several internal data structures to store the SNMP information that is collected from the Network Elements. In general, there is an internal data structure for each SNMP MIB table or MIB Object that is collected, and the SIS Language based management script is oblivious to this data structure in order to keep the process owner and administrator focused on the management tasks only.
The two steps used to execute the Process scan are:
- Collecting the data.
- Analyzing the data.
Depending on how the process is used, the frequency of these two steps will vary. For example, a process can be used to verify operational modifications of a particular IT service or a protocol. In this case, the data collection runs before and after the change, and the data analysis is conducted after the change to determine the success of the change.
Read more on Management Process details:
- Creating Management Processes.
- Management Process Initialization Task.
- Management Process Iterative Task.
- Separated Sampling Processes.
- Back-to-Back Sampling Processes.
- Management Process MODULE Call Procedure.
- Variable Exchange between Multiple Running Management Scripts.