Viewing AP Performance

Click the Performance tab to analyze the following parameters:

• Latency - Average time delay between an AP and connected clients.
• Airtime Utilization - Percent of airtime utilized, by radio. Clicking Airtime Detail displays a pie chart that depicts a detailed breakup of the reception and transmission percentages (Rx and Tx) against parameters such as Data, Management, Unicast, Multicast, Interference and Network Load. Following are the statistics that are evaluated:

  Table 3 Airtime Utilization Statistics

  Total	Total Airtime under observation
  RxLoad	Airtime spent in receiving frames destined to AP in Micro seconds
  RxInt	Airtime spent in receiving frames NOT destined to AP in Micro seconds
  TxSuccess	Airtime spent in transmitting frames successfully in Micro seconds
  TxFailed	Airtime spent in transmit failed in Micro seconds
  NonWifi	Airtime where CCA is busy in Micro seconds
  RxTotal	Same as RxLoad or sum of Rx (Mgmt Unicast + Mgmt Bcast + Data Unicast + Data Bcast)
  RxMgmtU	Airtime spent in receiving Management Unicast frames in Micro seconds
  RxMgmtB	Airtime spent in receiving Management Broadcast frames in Micro seconds
  RxDataU	Airtime spent in receiving Data Unicast frames in Micro seconds
  RxDataB	Airtime spent in receiving Data Broadcast frames in Micro seconds
  TxTotal	Same as TxSuccess or sum of Tx (Mgmt Unicast + Mgmt Bcast + Data Unicast + Data Bcast)
  TxMgmtU	Airtime spent in transmitting Management Unicast frames in Micro seconds
  TxMgmtB	Airtime spent in transmitting Management Broadcast frames in Micro seconds

  Figure 15  Sample Airtime Utilization Pie Chart

  
• Capacity - Measurement of potential data throughput based on the recent air-time efficiency and the performance potential of the AP and its currently connected clients.

You can view the parameters based on specific:

• Duration: 1 hour, 24 hours, 7 days, and 14 days
• Radio: 2.4 GHz, 5GHz

The parameters are displayed as Graphs and Bar Charts. When you hover over the graph you can view the Date and Time, Median, Likely Range, Min-Max Range of the parameters. To view specific information on the graph, click and drag the portion. The selected portion would zoom in. To restore to normal view, click the Reset zoom button.

To display specific information, click the settings button. The Settings - Performance window pops up. In Show top, enter the number of APs to be analysed and choose the AP identity display.