How to enable NBAR for monitoring?

1. Navigate to Inventory > Device > Device Snapshot 
2. Click on menu icon (green square on top right) and click on "Configure NBAR"
3. "Check status" to see if the router supports NBAR
4. Click on "Enable NBAR" (SNMP write community is required to perform enable operation)

How to enable polling for NBAR?

1. Navigate to Inventory > Devices > Device Snapshot  
2. Click on menu icon (green square on top right) and click on "Configure NBAR"
3. "Check status" to see if the router supports NBAR
4. Click on "Enable NBAR" (SNMP write community is required to perform enable operation)
5. Click Next
6. Select interfaces for enable polling
7. Finish

How to change polling interval for NBAR?

1. Navigate to Settings > NetFlow > NBAR/CBQoS 
2. Select the required Polling Interval in minutes Options available: 5 mins, 10 mins, 15 mins, 25 mins, 30 mins and 60 mins.
3. Select the Timeout in seconds (5, 10, 15)
4. Save