A client protection enabled on WLAN ID 1 some clients unable to connect

The correct answer is A. client must support CCx5 and above. If client protection is enabled on a WLAN and some clients are unable to connect, it suggests that these clients lack support for the proprietary technology required by the protection feature, such as Cisco Compatible Extensions (CCX) version 5 or above.

Troubleshooting Client Connectivity Issues

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Aclient must support CCx5 and above

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A
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If client protection is enabled on a WLAN and some clients are unable to connect, it suggests that these clients lack support for the proprietary technology required by the protection feature, such as Cisco Compatible Extensions (CCX) version 5 or above.

Aclient must support CCx5 and aboveCorrect

Cisco proprietary features, often referred to as 'client protection' or 'ClientLink,' enhance wireless performance and reliability but typically require client devices to support specific versions of Cisco Compatible Extensions (CCX). If such a feature is enabled on the WLAN, clients not supporting the necessary CCX version (e.g., CCXv5 or newer) may fail to connect or experience connectivity issues due to incompatibility.

Concept tested: Wireless client protection compatibility

Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/b_wlc_config_guide_74/b_wlc_config_guide_74_chapter_010.html

Topics

#client protection#WLAN features#Cisco Compatible Extensions (CCX)

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