What is a subscription?

Subscription

A subscription represents a request for statistics information management.

User-configured subscriptions

You can configure telemetry subscriptions.

For an NE managed by NFM-P, the statistics you need must be collected by the NFM-P.

The NSP can be configured to collect accounting files from classic NEs; see the NSP System Architecture Guide.

Baseline and Indicator subscriptions

Baseline and indicator subscriptions are managed by Baseline Analytics and NSP Indicators respectively, and are read-only in the Data Collection and Analysis Management, Subscriptions view.

Baseline Analytics is available with the Network Operation Analytics feature package, and NSP Indicators is available with the Performance Indicators and Alerts installation option.

Note: To use Baseline Analytics and NSP Indicators with model-driven NEs, the gnmiTelemetry installation option is also required.

OAM subscriptions

NSP generates predefined OAM-related telemetry subscriptions in systems where MD-OAM is deployed. OAM subscriptions appear in the Telemetry subscriptions list, prefixed with TestSuiteEx_OAM.

OAM subscriptions are used by NSP OAM to receive and publish results for OAM tests. NSP creates these subscriptions when an appropriate type of test is executed, and also when an executing test is discovered in the network. These subscriptions should never be deleted. If they are deleted, OAM will encounter problems and may no longer produce or record OAM test results.

The following parameters may be edited:

  • collection interval - if there is a need to change the collection interval for streaming results

  • file prefix and file subscriptions - if there is a need to record results to a file

Do not edit other parameters in an OAM subscription.

NFM-P for OAM

NFM-P can also provide streaming results for nodes that support this. NFM-P can also produce results that are not streamed from the node. In this case, OAM obtains these results from the NFM-P result topic in kafka, and publishes them to the appropriate OAM subscription. There is a NFM-P results mapping file that defines how this is done. Streaming results are obtained by subscribing to the node using GRPC.

In addition to streaming results, results are obtained by other mechanisms:

  • Accounting results are obtained from accounting files on the node. These files sent to the NSP via FTP, parsed and results are published to telemetry on the OAM subscriptions.

  • CLI tests (loopback, linktrace) are executed and the results read from the CLI output. This output is parsed and results created and published to telemetry on the OAM subscriptions.