VOS Device Metrics for Analytics

Usage-Monitoring Metrics

VOS devices export usage monitoring metrics at 5-minute intervals in the following categories:

• Access circuit usage for SD-WAN and DIA
• Application usage by tenant, appliance, and WAN link
• User usage by tenant, appliance, and WAN link
• VRF usage by tenant, appliance, and WAN link
• SD-WAN rule usage by tenant, appliance, and path
• SD-WAN path usage by tenant, appliance, and path
• Firewall rule usage by tenant and appliance
• URL category/reputation usage by tenant and appliance
• Source and destination IP address usage by tenant and appliance
• Firewall zone usage by tenant and appliance
• Forwarding class usage by tenant and appliance

The following metrics are exported for each category:

• Sessions—The number of sessions that were closed during the measurement period. This metric is intended to show session activity trends over time rather than the number of currently active sessions. The current active session count is maintained only at the appliance level and is available under Analytics > Dashboard > System. Because active session information is highly dynamic and expensive to maintain, it is not tracked on a per-category basis.

When viewing session usage over time in reports, the value displayed for each data point depends on the selected chart resolution:

• Minute resolution—Each data point represents the number of sessions closed during the smallest interval at which data is stored (for example, 5-minute or 15-minute intervals).
• Hourly resolution—Each data point represents the total number of sessions closed during that hour.
• Daily resolution—Each data point represents the total number of sessions closed during that day.

As the chart resolution changes, the data is aggregated accordingly, so the values shown represent totals for the selected time interval rather than instantaneous session counts.

Note: If auto resolution is selected, the chart automatically chooses the resolution based on the selected time range:

• Up to the last day: Minute resolution
• Last 7 days: Hourly resolution
• Last 30 days: Daily resolution
   
• Volume-TX—The total bytes transmitted within the last measurement period. This metric is used to calculate the transmit bandwidth (Bandwidth-TX) every 5 minutes.
• Volume-RX—The total bytes received within the last measurement period. This metric is used to calculate the receive bandwidth (Bandwidth-RX) every 5 minutes.

These metrics are available in selected Analytics dashboard tables and in drop-down lists on charts. For example, to display URL category information including usage-monitoring metrics:

1. Select Analytics > Dashboard > Security > Web. 
2. Select the URL Categories tab. 
   
   
   
   Note that the URL Category Usage table includes usage-monitoring metrics.
    
3. In the URL Category Usage Over Time chart, select a usage-monitoring metric from the drop-down list (here, Volume TX). The chart data is recalculated using the metric, and the chart redisplays with this metric as the y-axis.
   
   

Example Usage-Monitoring Charts and Tables

The following are examples of charts that can be displayed based on usage-monitoring metrics:

• Access circuits—For more information, see Access Circuits in SD-WAN Dashboards.
  • SD-WAN Overall Usage Over Time
  • SD-WAN Overall Traffic Usage
  • SD-WAN Application Traffic Usage Over Time
  • DIA Application Traffic Usage Over Time
  • SD-WAN Application Traffic Usage Summary
  • DIA Application Traffic Usage Summary

• Firewall—For more information, see Firewall Dashboard in Security Dashboards.
  • Rule Usage Over Time
  • Rule Usage
    
    

  • Source IP Usage
    
    

System-Load Metrics

VOS devices export system-load metrics at 5-minute intervals within the appliance owner tenant's context, in the following categories:

• CPU and Core Load—The percentage of overall CPU and per CPU core utilization during the last measurement interval.
• Memory and Service Memory Load—The percentage of overall memory and service memory consumed during the last measurement interval.
• Disk Load—Percentage of disk utilization recorded during the last measurement interval.
• Session Load—A snapshot of the number of active sessions at the end of the most recent measurement interval. Unlike the Sessions metric, which counts sessions that have closed during an interval, Session Load represents the number of active sessions at a specific point in time.
  
  When viewing session load over time in reports, the value displayed for each data point depends on the selected chart resolution:
  • Minute resolution: Each data point represents the session load captured at the smallest interval at which data is stored (for example, every 5 or 15 minutes).
  • Hourly resolution: Each data point represents the average session load across all measurement intervals within that hour.
  • Daily resolution: Each data point represents the average session load across all measurement intervals within that day.
    As the chart resolution changes, the data is aggregated accordingly. For hourly and daily views, the values shown are averages of the recorded session load samples rather than instantaneous measurements.
     
• CPU Temperature—A snapshot of the CPU temperature of the VOS node at the end of the last measurement interval.
• System Temperature—A snapshot of the overall system temperature of the VOS node at the end of the last measurement interval.

These metrics display in the Appliance Health Monitoring table in Analytics. To view appliance health, you navigate to the Appliance Health Monitoring table and select the appliance owner in the first drop-down list. The health of all appliances owned by the organization are displayed.

For example, to display system-load metrics for devices associated with tenant Corp-Inline-Customer-1:

1. Select Analytics > Dashboard > System.
   
   
    
2. Select the Appliance Health tab. The Appliance Health Monitoring table displays.
3. Select Corp-Inline-Customer-1 in the first drop-down list. System-load metrics display for each VOS device owned by organization Corp-Inline-Customer-1.   

Supported Software Information 

 Releases 20.2 and later support all content described in this article.

Additional Information 

Apply Log Export Functionality
Configure Log Export Functionality