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300-365 · Question #85

A sporting arena has a new wireless network and finds that clients are not connecting to their nearest access point. Which setting can be enabled to minimize this behavior and reduce the AP view of…

The correct answer is A. Use an RF profile with an RX-SOP threshold. Configuring an RX-SOP threshold in an RF profile reduces AP receiver sensitivity, forcing distant clients to associate with their nearest AP and lowering the AP's perceived channel utilization.

Wireless Troubleshooting and Optimization

Question

A sporting arena has a new wireless network and finds that clients are not connecting to their nearest access point. Which setting can be enabled to minimize this behavior and reduce the AP view of channel utilization?

Options

  • AUse an RF profile with an RX-SOP threshold.
  • BEnable Band Select
  • CEnable Client Balancing
  • DTurn on CleanAir

How the community answered

(48 responses)
  • A
    73% (35)
  • B
    4% (2)
  • C
    17% (8)
  • D
    6% (3)

Why each option

Configuring an RX-SOP threshold in an RF profile reduces AP receiver sensitivity, forcing distant clients to associate with their nearest AP and lowering the AP's perceived channel utilization.

AUse an RF profile with an RX-SOP threshold.Correct

RX-SOP (Receive Start of Packet) threshold defines the minimum signal level an AP will process - raising this value causes the AP to discard weaker signals from far-away clients, effectively shrinking the cell and compelling those clients to roam to a closer AP. Because below-threshold packets are ignored, the AP also reports lower channel utilization since it does not count those frames as channel busy time.

BEnable Band Select

Band select steers dual-band capable clients from 2.4 GHz to 5 GHz to relieve congestion but does not enforce association to the nearest AP or reduce channel utilization perception.

CEnable Client Balancing

Client balancing distributes load evenly across APs in an area but does not guarantee clients connect to the physically nearest AP based on signal strength.

DTurn on CleanAir

CleanAir identifies and classifies RF interference sources to improve spectrum awareness but does not influence which AP a client associates with or reduce the AP's channel utilization reading.

Concept tested: RX-SOP threshold for AP cell sizing and client association

Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/config-guide/b_wl_16_10_cg/rx-sop.html

Topics

#RX-SOP#RF profile#channel utilization#client association

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