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Radio Resource Management

Radio Resource Management. Radio Resource Management. Radio Resource Management Software: Embedded in WLC. Transmit Power User Load Management Auto Channel Management Interference Detection and Avoidance. Rogue Detection and Containment Coverage Hole Management Mobility Management.

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Radio Resource Management

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  1. Radio Resource Management

  2. Radio Resource Management Radio Resource Management Software: Embedded in WLC Transmit Power User Load Management Auto Channel Management Interference Detection and Avoidance Rogue Detection and Containment Coverage Hole Management Mobility Management All Channels Scanned While Offering Service Country Channels Only or All Channels All 802.11 Packets Collected and Characterized Rogue Beacons, Rogue Clients, 802.11 Interference and Matched Against IDS Signatures Key RF Stats Profiled AP Received Energy Total Energy on Each Channel Non-802.11 Noise Non-802.11 Noise Heard on Channel 802.11 Interference (Described as %busy) 802.11 Packets Heard During Sampling Intervals Utilization More Emphasis Given to APs That Require More Bandwidth LWAPP AP WLC

  3. WLCs Elect a Leader to Analyze RF MeasurementVariables and Make Optimal Channel and Power Decisions for the Whole System; Changes Are Made Locally If Possible; Dampening for System Wide Changes < –80dBm • Neighbor Messages • Sent at Full Power • WLC IP/RF Group Name • Operating channel • Authenticated • If APs on different WLCs hear neighbor messages at -80 dBm or stronger, they group their RF domains • Channel and power then computes as a group Automatic RF Grouping • Auto-RRM negates the need to configure each AP • Automatic channel and power selection • Performed in real-time • Computed across multiple WLCs • Automatically performs ongoing configuration adjustments • Over-ride capability for non-typical installs • On-demand RRM • Manual channel and power configuration WLC A RF Group = Networkers WLC B RF Group = Networkers

  4. RRM Thresholds • RRM will be postponed on a per-AP basis where traffic remains in the Platinum QoS (Voice) queue • RRM thresholds are for alerting only • By default, only the channels used for data are factored into RRM scanning; if needed, select All Channels In the WLC WebGUI: Wireless > 802.11x RRM> AutoRF

  5. Building Block: Dynamic RF RF channel “1” RF channel “2” RF channel “3” Monitoring Monitoring Monitoring Cisco Hardware Layer Each AP provides traffic delivery and RF monitoring (Wireless IDS).

  6. Real-Time RF Management DynamicChannelAssignment RF channel “1” RF channel “6” RF channel “11” DynamicPowerOptimization Cisco AironetAccess Points Cisco Hardware Layer • Eliminate coverage holes • Optimize coverage area • Avoid interference & Improve performance • Reduce “hands on” WLAN management

  7. Channel 44Interference Real-time Configuration Management Minimize the Impactof Noise and Interference Channel 36 Channel 44 Channel 52 Channel 60

  8. Better Network PerformanceDynamic Load Sharing Solving Performance & Capacity problems in high density areas (e.g. conference rooms, cafeteria)…

  9. Better Network PerformanceDynamic Load Sharing Solving Performance & Capacity problems in high density areas (e.g. conference rooms, cafeteria)…

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