Sample STM threshold-crossing alarm configuration
Threshold-crossing alarm configuration scenario
The following sample configuration focuses on the configuration of a threshold-crossing alarm that is to be included in a test suite. It does not describe the configuration of the test suite, schedule or scheduled task associated with the sample. No test policy is required for the configuration, as it does not involve generated tests.
A network provider needs to use the NFM-P to monitor a customer VPLS named VPLS 17 that carries VoIP traffic. The goal is to have the NFM-P raise an alarm when the round-trip jitter value rises above a specified threshold.
Network jitter values typically range from 10 to 15 ms, but are occasionally as high as 25 ms. Jitter buffers in the end-user VoIP sets can accommodate up to 80 ms of jitter. A network engineer determines that a jitter test threshold of 30 ms is low enough to allow NOC operators sufficient time for investigating a jitter increase, yet high enough to exclude spurious jitter events.
An NFM-P administrator wants to create a scheduled CPE ping test suite for the VPLS that periodically measures the round-trip jitter between each VPLS site and an end device. The administrator creates one CPE ping test for each site in the VPLS.
Sample threshold-crossing alarm configuration steps
The following procedure defines the configuration steps required for this sample. See Sample STM network SLA monitoring configuration for information about sample test suite, test policy, or scheduling configurations. See the procedures in Procedures to use the STM for complete STM configuration information. For conciseness, the procedure lists only the configuration steps that are specific to and necessary for the sample.
Create CPE ping test with threshold-crossing criteria | |||||||||||||||||||||||||||||||||||||||||||
1 |
Click Create on the Service Test Manager (STM) form and choose L2 Service→CPE Ping. The CPE Ping (Create) form opens. | ||||||||||||||||||||||||||||||||||||||||||
2 |
Configure the parameters in Table 89-11, General CPE Ping test parameters using the supplied values. Table 89-11: General CPE Ping test parameters
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3 |
Click Apply. Additional buttons and tabs are displayed, and the form name changes to CPE Ping Test Name (Edit). | ||||||||||||||||||||||||||||||||||||||||||
4 |
Click on the Threshold Alarms tab. | ||||||||||||||||||||||||||||||||||||||||||
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Click Add to add threshold criteria. The NE Threshold Event (Create) form opens. | ||||||||||||||||||||||||||||||||||||||||||
6 |
Configure the parameters in Table 89-12, Threshold-crossing CPE Ping test parameters using the supplied values. Table 89-12: Threshold-crossing CPE Ping test parameters
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7 |
Save your changes and close the forms. |