Network Diagnostics Page

The Network Diagnostics page allows you to run the Speed Test and Link Test for the Network between AP and Controller. To run diagnostics, click Start Diagnostics.

 The functionalities of the Network Diagnostics tab are as follows:

  • Speed Test—The Speed test feature calculates both the download and upload speeds (DTLS and non-DTLS) between the controller and the AP. It provides the network speed with DTLS and Non-DTLS connections.
    Using the Speed Test feature you can determine the non-DTLS throughput of the system, by running a speed test on demand. This allows for root cause failure analysis and debugging of network bottlenecks.
  • Link Test—The Link test provides the link latency and the jitter values. Link latency monitors the round-trip time of the CAPWAP packets (echo request and response) from the access point to the controller. The round-trip time is calculated in milliseconds. The jitter value is then calculated using the link latency values. Jitter is the amount of variation in latency/response time, in milliseconds.
  • Network Diagnostics Last Run—Shows the details of the last run diagnostics along with its timestamp.

 Running Network Diagnostics via Controller CLI
 From the wireless LAN controller CLI, you can use the following command to run network diagnostics: show ap network-diagnostics ap-name

 Example:
 (Cisco Controller)> show ap network-diagnostics ap1 AP network diagnostics has been initiated
 Waiting for network diagnostics to complete
 ======================= AP Network Diagnostics =====================
 Speed Test Results:
 DTLS Upload Speed ................ 10.83 Mbps
 DTLS Download Speed ................ 9.87 Mbps
 Non-DTLS Upload Speed ................ 22.29 Mbps
 Non-DTLS Download Speed ................ 24.44 Mbps Link Test Results:
 Latency ................ 1 mSec
 Jitter ................ 0 mSec
 (Cisco Controller)>

 Running Network Diagnostics via Controller GUI
 You can initiate the network diagnostics tests from the Network Diagnostics tab in the controller GUI. This tab is available at Wireless > All APs > Details.