Wireless LAN Controllers

Wireless LAN Controllers

Network

Wireless LAN Controllers

Monitor wireless LAN controllers and the infrastructure they manage. Track availability, response time, access point count, connected clients, rogue SSIDs, and more from a single view.

Overview

Cloudmon monitors wireless LAN controllers using SNMP, collecting availability, performance, and device data at regular polling intervals. Once a controller is added, all access points, SSIDs, and clients associated with it are discovered automatically. Navigate to Network → Wireless Devices to access the wireless overview, which shows total WLC count, access point count, SSID count, active clients, and rogue SSID count across the environment.

The overview page ranks controllers by client count and access point count, and distribution charts break the fleet down by vendor and model, giving teams an immediate picture of the wireless environment without drilling into individual devices.

Prerequisites

Before adding a wireless controller, confirm the following:

  • SNMP is enabled on the controller. Most controllers have SNMP disabled by default and require it to be enabled in the device configuration.
  • UDP port 161 is open between the Cloudmon probe and the controller.
  • SNMP credentials have been added to Cloudmon under Settings → Credentials. Both SNMPv2c and SNMPv3 are supported.
  • The Cloudmon probe can reach the controller on the network. If the controller is on a remote segment, assign the correct probe when adding the device.

What Cloudmon Monitors

Each WLC has a detailed view showing availability, downtime count, and response time in the summary header alongside the SSID count, client count, rogue SSID count, access point count, and active alarm state. This gives teams an immediate read on the controller and everything it is managing without needing to access the controller directly.

A Device Information panel surfaces the system name, description, vendor, model, hardware version, software version, MAC address, serial number, and maximum access point limit. An Overview panel shows the full AP hierarchy as a treeview, making it easy to see exactly which access points are registered to the controller and their current status. Interface status is shown as a colour-coded map alongside the treeview.

Because access points, SSIDs, and clients are discovered automatically from the controller, there is no need to add them individually. A controller added to Cloudmon immediately populates the Access Points, SSIDs, and Clients views with everything it manages, giving teams full wireless visibility from a single registration step.

Alarms

Alarm triggers can be configured per controller to alert on availability, response time, client count thresholds, and rogue SSID detection. Learn more.

Troubleshooting

SymptomLikely CauseFix
Controller not appearing after addingSNMP credentials are incorrect or the probe cannot reach the controller on UDP port 161Verify the IP address, confirm SNMP is enabled on the controller, check port 161 is open, and re-test the credential
Controller showing as DownThe controller is unreachable from the probe or SNMP credentials have changedCheck network connectivity to the controller and verify the assigned SNMP credential is still valid
Access points not appearingThe controller has not completed its first full poll, or the APs are not registered to the controllerWait for the next poll cycle and confirm the APs are associated to the controller in its management interface
High rogue SSID countNeighbouring wireless networks are being detected by the access pointsReview the Rogue SSID list and classify known neighbouring networks to reduce false positives
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