If your device reboots during AutoTest or cannot stay connected to Wi-Fi, the issue may be due to excess ARP activity. This problem often occurs when the network’s intrusion detection system (IDS) detects a high rate of ARP packets and temporarily blocks the device.
Symptoms of Excess ARP Activity
- The unit reboots during an AutoTest.
- Wi-Fi disconnect errors such as:
%CLIENT_EXCLUSION_SERVER-5-ADD_TO_EXCLUSIONLIST_REASON_DYNAMIC: reason: Excess ARP activity - Wireless logs showing:
Disconnect CTRL-EVENT-DISCONNECTED reason=252 - Controller logs indicating:
“Client is sending Excessive ARP packets. Blacklisting the client.”
Why This Happens
By default, the device sends 100 ARPs per second, which works for most networks. However, some IDS systems, especially on Cisco APs and controllers, flag this as suspicious activity.
How to Fix the Issue
- Open the Discovery App.
- Go to App Settings.
- Reduce the ARP rate to 5, 10, or 20 per second.
- This keeps the device below IDS thresholds.
- Note: Lower ARP rates mean slower network discovery but prevent reboots and Wi-Fi disconnects.