During RF verification, some 5 GHz clients are unable to connect to certain APs, while other 5 GHz clients can connect to all APs. What may prevent some clients from connecting?

The correct answer is A. some clients may not support the UNII-2 Extended band. The 5 GHz band is divided into multiple UNII sub-bands. UNII-2 Extended (UNII-2e), covering approximately 5470–5725 MHz, is available in many regulatory domains and is commonly used for additional 802.11a/n/ac channels. However, older or budget 5 GHz client devices may only…

Wireless Troubleshooting

Question

Options

Asome clients may not support the UNII-2 Extended band
Bsome clients may not support OFDM modulation
Csome clients may not support TPCv2
Dsome clients may not support CCXv5

How the community answered

(34 responses)

A
71% (24)
B
18% (6)
C
9% (3)
D
3% (1)

Explanation

The 5 GHz band is divided into multiple UNII sub-bands. UNII-2 Extended (UNII-2e), covering approximately 5470–5725 MHz, is available in many regulatory domains and is commonly used for additional 802.11a/n/ac channels. However, older or budget 5 GHz client devices may only support UNII-1 and standard UNII-2 channels and lack hardware support for UNII-2 Extended. If certain APs are configured to operate on UNII-2 Extended channels, clients without that hardware capability will be unable to connect to those specific APs, while newer clients supporting all sub-bands can connect to any AP.

Topics

#UNII-2 Extended#DFS channels#5 GHz band#client compatibility

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