PM diagnostic test workflow

Stages

This workflow outlines the procedures that describe how to configure, manage, and perform PM OAM diagnostic tests, as well as how to view the results the tests generate. PM tests are typically configured through the Service Test Manager. See Chapter 89, Service Test Manager for more information on working with the STM. You can also configure some PM-related objects from the Service Topology map. See Working with Ethernet CFM objects in Chapter 4, Topology map management .


1	If the PM diagnostic test being configured is part of an STM test policy or STM test suite, review the STM chapter workflow to determine any prerequisite configuration requirements. See Chapter 89, Service Test Manager for more information on the STM.
2	Create and distribute a PM bin group policy that configures the statistical bins used by the various PM tests to collect their data. Perform To configure a PM bin group policy .
3	Create and distribute a new accounting policy, required to configure a PM session. Choose “Complete-PM” for the Type parameter. See “To configure an accounting policy” in the NSP NFM-P Statistics Management Guide for information on creating an accounting policy. See To release and distribute a policy for information on distributing a policy.
4	Configure a TWAMP Light reflector; see To configure a TWAMP Light reflector. This is only required for proper operation of a PM TWAMP Light test session.
5	Configure a PM session to provide the session framework; see To configure a PM session OAM diagnostic test from the STM .
6	To generate accounting statistics, associate the accounting policy to the PM session. If the accounting policy is not associated with the PM session, the test results will be collected as performance statistics. To associate the accounting policy with the PM Session: Click Tools→Service Test Manager (STM) on the NFM-P main menu. The Service Test Manager (STM) form opens. Select a PM Session and click Properties. The PM Session (Edit) form opens. Click on the Components tab. Right-click on Measurement Intervals and choose Create. The Measurement Interval (Create) form opens. In the Accounting Policy panel, click Select and choose a policy. Click OK. Close the open forms.
7	As required, configure one of the following PM diagnostic tests: CFM DMM session test; see To configure a CFM DMM session OAM diagnostic test from the STM . CFM SLM session test; see To configure a CFM SLM session OAM diagnostic test from the STM . CFM LMM session test; see To configure a CFM LMM session OAM diagnostic test from the STM . MPLS DM session test; see To configure an MPLS DM session OAM diagnostic test from the STM. TWAMP Light session test; see To configure a TWAMP Light session OAM diagnostic test from the STM . TCC test; see To configure a TCC OAM diagnostic test from the STM .
8	Create an STM test policy, specifying at least one PM diagnostic test definition. See To configure an STM test policy for more information.
9	Create an STM test suite; see To create an STM test suite.
10	As required, execute the generated PM test suite; see To execute an STM test suite .
11	As required, view and compare PM diagnostic test results: From a specific PM diagnostic test form; see To collect and view PM statistics from a test form . From the STM; see To view PM test results in the STM . From the Statistics Manager; see To view PM test statistics in the Statistics Manager . For OAM PM event server performance statistics; see To view OAM PM Event server performance statistics . To view STM test suite results; see To view STM test suite results . To view and compare STM test suite results; see To view STM test suite results .

Hardware configuration requirements

The PM session testing functionality requires the following hardware configurations to operate properly:

Platform: 7750 SR 7/12, 7450 ESS 7/12, 7750 SRc 4/12 and 7950 XRS all require CPM3 or above for binning. The 7705 SAR does not support the creation of PM session tests.
IOM support: IOM3/IMM and above
Chassis mode: All SAPs executing this function must reside on IOM3/IMM and above. However, not every SAP in an affected service needs to be configured on IOM3/IMM or above. All active network ports on the affected NE must exist only on IOM3/IMM and above. The term given to this mode of operation is Network Chassis Mode D.

Recording test results

In addition to the procedures for viewing the OAM PM test results, you can also use the LogToFile method to record test results for transfer to external OSS applications. See the NSP NFM-P XML API Developer Guide for more information.