Understanding Baseline Configuration and Metric Projections in DX NetOps
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Understanding Baseline Configuration and Metric Projections in DX NetOps

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Article ID: 370058

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Updated On:

Products

DX NetOps

Issue/Introduction

How do we configure baseline calculations in the metric XML for thresholding and understand the projections generated by DX NetOps?

Environment

DX NetOps Peformance Management - All releases 

Resolution

To configure and understand baseline calculations and projections in DX NetOps, here are the key details:

Baseline Configuration:

  1. Metric XML Configuration for Baseline Calculation:

    • The metric.xml configuration is used to perform baseline calculations.
    • The BaselineDefinitions section in the XML contains the definitions for the metric family.
    • Each metric in the AttributeGroup section with Baseline set to true requires a baseline definition.
    • Hourly Baseline: Required for both event processing and displaying baselines in reports.
    • Daily Baseline: Optional, used for displaying baselines in reports with a time frame of one month or greater.
  2. Hourly Baseline for Thresholding:

    • Uses the same retention period as hourly rollups in retention settings.
    • Represents the same day/same hour.
  3. Daily Baseline for Projections:

    • Uses the same retention period as daily rollups in retention settings.
    • Represents the same day.

Projections:

  1. Metric Projection for Network and Capacity Planning:

    • Projections are based on up to 90 days of historical data.
    • Configurable for individual metrics with up to three projection intervals.
    • Projection Calculation Process:
      • Calculates daily percentile value from as-polled data.
      • Uses linear regression to calculate future values based on historical data.
  2. Default Projections and Graphs:

    • Scorecard Projections: Visible in graphs even without baseline configuration, using live data for short-term projections.
    • No Default Projections Saved: No default projections are stored in the database due to resource constraints and disk space usage.
  3. Timeframe for Projections:

    • Metric projections can be configured for intervals such as 20, 60, and 180 days.
    • Typically, the longer the projection interval, the less accurate the exact value.

References:

  • For detailed configuration, refer to Metric Family XML Structure.
  • To map between DA and Portal groups, refer to Mapping DA and Portal Groups.
  • For group contents, see Group Contents Documentation.
  • For device-type and sysoid, refer to DA Device Manageable Endpoint - <scheme>://<DA_HostName>:<Port>/rest/devices/manageable
  • For specific attributes, refer to DA REST API.
  • For additional REST API documentation, append /documentation to the DA REST endpoints (e.g., http://DA:8581/rest/eventprofilegroups/documentation).

Additional Information:

By configuring the baselines and projections correctly, you can ensure accurate thresholding and trend analysis for effective network performance management.