An IT technician is troubleshooting severe throughput degradation and excessive frame retransmissions on a newly configured 2.4 GHz wireless network in an office suite. A site survey reveals that three nearby access points serving the area are operating on channels 1, 3, and 5. Which of the following modifications should the technician make to resolve the interference?
- Reconfigure the access points to operate on channels 1, 6, and 11.Answer
- BSet all three access points to operate on channel 6 to unify the wireless channel assignment.
- CIncrease the radio transmit power on all access points to overpower the adjacent signal noise.
- DConfigure an IP helper address on the wireless controller to ensure clients receive valid DHCP leases.
Answer
Reconfigure the access points to operate on channels 1, 6, and 11.
The 2.4 GHz Wi-Fi spectrum uses 20 MHz channel widths spaced 5 MHz apart. To avoid adjacent-channel interference (ACI), access points must be configured on non-overlapping channels (1, 6, and 11). Operating APs on channels 1, 3, and 5 results in overlapping frequency ranges that cause heavy packet corruption and retransmissions.
Step-by-Step Solution
Key Concept
2.4 GHz Non-Overlapping Channel Selection