A network administrator notices severe throughput degradation and high frame retransmission rates across a newly deployed wireless network serving four adjacent open-office zones. Reviewing the wireless controller configuration reveals that neighboring access points are currently statically assigned to channels 1, 4, 7, and 10. Which configuration change must the administrator implement to eliminate adjacent channel interference (ACI) between the neighboring access points?
- Reassign the access points to operate using only channels 1, 6, and 11, reusing channel 1 on the access point farthest from the initial channel 1 deployment.Cevap
- BReassign the access points to channels 2, 5, 8, and 11 to achieve an even 3-channel spacing across the available frequency band.
- CEnable 40 MHz channel bonding across channels 1 and 7 to increase throughput and bypass channel spacing restrictions.
- DIncrease the transmit power on access points operating on channels 4 and 7 to override background noise from channels 1 and 10.
Cevap
Reassign the access points to operate using only channels 1, 6, and 11, reusing channel 1 on the access point farthest from the initial channel 1 deployment.
In the 2.4 GHz Wi-Fi band, each channel occupies 20 MHz of channel bandwidth while center frequencies are spaced only 5 MHz apart. Therefore, only channels 1, 6, and 11 provide complete frequency separation without spectral overlap. In a four-AP deployment, assigning adjacent APs to 1, 6, and 11 and placing the second channel 1 AP at the maximum physical distance ensures clean cell boundary separation and eliminates adjacent channel interference.
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Anahtar Kavram
2.4 GHz Non-Overlapping Channel Planning