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Zorluk: OrtaTroubleshooting Wireless Connectivity and Signal Issues

A network engineer is troubleshooting wireless performance issues in a multi-story office building. Wireless site survey logs indicate that client devices in crowded conference rooms remain stickily connected to distant access points (APs) with a weak RSSI of -83 dBm, causing slow throughput and dropped VoIP calls. Simultaneously, the 2.4 GHz spectrum is severely saturated with high client density. Which of the following actions should the engineer take to resolve these wireless connectivity and coverage issues? (Select TWO.)

  1. Configure band steering on the wireless LAN controller to push dual-band client devices onto the 5 GHz spectrum.Cevap
  2. Adjust the minimum RSSI disassociation threshold on access points to disconnect clients when signal strength drops below a playable level.Cevap
  3. C
    Increase the transmit power on all 2.4 GHz access point radios to maximum to overpower adjacent client traffic.
  4. D
    Enable 160 MHz channel bonding across all 5 GHz access points to increase radio signal penetration through physical walls.

Cevap

The correct actions are to enable band steering on the wireless controller to steer clients away from the saturated 2.4 GHz spectrum onto 5 GHz, and to adjust minimum RSSI thresholds on access points to resolve sticky client issues by forcing weak clients to disassociate and roam.
Enabling band steering optimizes traffic by directing dual-band clients away from the congested 2.4 GHz frequency and onto 5 GHz channels. Configuring minimum RSSI thresholds fixes sticky client roaming by actively disassociating client devices when their signal drops below a specific dBm level, prompting them to scan and connect to an AP with better RSSI.

Adım Adım Çözüm

1
Analyze the reported symptoms: client stickiness at low RSSI (-83 dBm) and 2.4 GHz spectrum saturation.
Identified two distinct issues: sticky roaming behavior and band congestion.
Resolving wireless issues requires addressing both physical cell boundaries/roaming triggers and spectrum utilization.
2
Evaluate solutions for sticky clients.
Configuring minimum RSSI disassociation thresholds forces clients to drop weak connections and re-associate with nearer access points.
Client devices default to holding onto connections until signal is completely lost unless enforced by AP disassociation thresholds.
3
Evaluate solutions for 2.4 GHz spectrum saturation.
Enabling band steering offloads 5 GHz-capable devices from the 2.4 GHz band.
5 GHz offers higher throughput and more non-overlapping channels, mitigating high-density contention.

Anahtar Kavram

Wireless roaming optimization (minimum RSSI) and band management (band steering)
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