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Select the AP and tick the Enable Sniffer checkbox under the Configure > Sniffer Channel Assignment, as shown in the image. Click on the arrow down button to display the search tool, select Contains from the dropdown list, and type the AP name, as shown in the image. This depends on the channel that is desired to scan, as shown in the image. On the Access Points page, display the 5 GHz Radios or 2.4 GHz Radios menu list. In the 9800 WLC GUI, navigate to Configuration > Wireless > Acces Points. carcerva-9k-upg# ap name 2802-carcerva-sniffer mode sniffer Configure AP to Scan a Channel via GUI carcerva-9k-upg# ap name name 2802-carcerva-sniffer Determine the AP that is desired to be used as Sniffer Mode and grab the AP Name. Click on Update & Apply to Device, as shown in the image.Ī pop-up appears to confirm the changes and the AP bounces, as shown in the image. Click Update & Apply to Device to Proceed" "Warning: Changing the AP mode will cause the AP to reboot. Verify the Admin Status is Enabled and change the AP Mode to Sniffer, as shown in the image. On the General tab, update the name of the AP, as shown in the image. Select the AP that is desired to be used in sniffer mode. On the 9800 WLC GUI, navigate to Configuration > Wireless > Acces Points > All Acces Points, as shown in the image.

It is recommended to have the sniffer AP close to the target device and the AP to which this device is connected.If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. The information in this document is based on these software and hardware versions: Prerequisites RequirementsĬisco recommends that you have knowledge of these topics: This document describes how to configure an Access Point (AP) in Sniffer Mode on a Catalyst 9800 Series Wireless Controller (9800 WLC) through the Graphic User Interface (GUI) or Command Line Interface (CLI) and how to collect a Packet Capture (PCAP) Over the Air (OTA) with the sniffer AP in order to troubleshoot and analyze wireless behaviors.