AirMatch RF Management Overview

 

ArubaOS does not support AirMatch in master controller mode.

The AirMatch channel and EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. optimization features deprecate the channel planning and EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. optimization features in the legacy ARM Adaptive Radio Management. ARM dynamically monitors and adjusts the network to ensure that all users are allowed ready access. It enables full utilization of the available spectrum to support maximum number of users by intelligently choosing the best RF channel and transmit power for APs in their current RF environment. feature. AirMatch is supported on Mobility Master only, while legacy ARM Adaptive Radio Management. ARM dynamically monitors and adjusts the network to ensure that all users are allowed ready access. It enables full utilization of the available spectrum to support maximum number of users by intelligently choosing the best RF channel and transmit power for APs in their current RF environment. channel optimization and EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. features continue to be supported by stand-alone controllers running ArubaOS.

AirMatch channel planning evens out channel distributions in any size of network, and in any subset of the contiguous network (as much as allowed by the network configuration, regulatory domain, and AP hardware capability). AirMatch also minimizes channel coupling, where adjacent radios are assigned to the same channel. The computing power of Mobility Master impacts channel distribution calculations, so channel coupling may occasionally be allowed in complex networks to keep the computing time practical.

AirMatch EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. planning automatically considers the local density of the network to manage the APs' coverage and MCS Modulation and Coding Scheme. MCS is used as a parameter to determine the data rate of a wireless connection for high throughput. operation, and optimizes EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. changes across neighboring AP radios in order to offer users the best roaming experience.

Table 1 describes some of the differences between the channel and EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. optimization features supported by ArubaOS AirMatch and ArubaOSARM Adaptive Radio Management. ARM dynamically monitors and adjusts the network to ensure that all users are allowed ready access. It enables full utilization of the available spectrum to support maximum number of users by intelligently choosing the best RF channel and transmit power for APs in their current RF environment. .

Table 1: AirMatch and ARM in ArubaOS

Features

AirMatch

ARM

Initial Release

ArubaOS 8.0.0.0

ArubaOS 2.x

Supported Topology

Mobility Master / Managed device

Stand-alone controller

Run Period

24 hours

As little as 5 minutes

RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. information used

Past 24 hours of RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. data

Instantaneous snapshot of the RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. environment

Deployment Time

5 AM Air Monitor. AM is a mode of operation supported on wireless APs. When an AP operates in the Air Monitor mode, it enhances the wireless networks by collecting statistics, monitoring traffic, detecting intrusions, enforcing security policies, balancing wireless traffic load, self-healing coverage gaps, and more. However, clients cannot connect to APs operating in the AM mode. (by default) , or any time necessary

NOTE: Starting with ArubaOS 8.1.0.0, the deployment time for each managed device is based upon the time zone configured for that device. In ArubaOS 8.0.x, the deployment time for all managed devices was based upon the time zone of the Mobility Master server.

Any time necessary

Computing Time

Depends upon network size

Less than 1 second

Optimization Scope

The entire RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. network

Each individual AP

AirMatch Channel Assignments

Each AP in a Mobility Master deployment measures its RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. environment for a five minute period, every 30 minutes by default. The AP then sends AMON Advanced Monitoring. AMON is used in Aruba WLAN deployments for improved network management, monitoring and diagnostic capabilities. messages about the radio feasibility to the managed device based on the AP hardware capability, radio and regulatory domain, and RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. neighbors. The managed device forwards these messages to the Mobility Master. The Mobility Master adds this information to a database, computes an optimal solution, and deploys the latest RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. plan by sending updated settings to the APs. By default, this configuration update is sent to each device at 5 AM Air Monitor. AM is a mode of operation supported on wireless APs. When an AP operates in the Air Monitor mode, it enhances the wireless networks by collecting statistics, monitoring traffic, detecting intrusions, enforcing security policies, balancing wireless traffic load, self-healing coverage gaps, and more. However, clients cannot connect to APs operating in the AM mode. (as per the system clock for each managed device), but time of this configuration update can be modified via the AirMatch profile.

 

An exception to this daily update is an automatic channel change due to a radar detection event or high noise interference. If an AP detects a radar event on its current operating channel, that AP automatically changes to another supported channel to avoid radar interference, and does not wait for the daily RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. configuration update from the Mobility Master. An AP may also automatically change channels if a very high noise level is detected on the current channel, if at least one other channel is free of noise.

AirMatch moves a radio to a random channel when a radar event is detected, or if a high noise floor is detected on a non-static channel. AirMatch uses the criteria described in Table 2 to assign a new channel.

Table 2: Channel Assignment Logic

Issue Prompting Channel Change

Channel Selection Criteria

Detected radar

AirMatch selects a channel with a minimum interference index from the channels without high noise or a radar condition. If an AP detects radar on a channel, AirMatch will change the AP channel and will blacklist that channel for the next 24 hours.

High channel noise

If an AP detects high noise levels on a channel, AirMatch will change the AP channel and will blacklist that channel for the next 24 hours. The channel selection criteria varies between static and non-static channels.

If static channel is configured, the channel does not change due to a high noise condition.

For a non-static channel, AirMatch selects a channel with a minimum interference index from the channels without high noise or a radar condition.

Channel Quality Improvement Thresholds

The AirMatch channel quality improvement threshold allows you to select the minimum channel improvement that can trigger a new scheduled channel solution. The default threshold value is a 15% improvement. If a proposed channel change will not produce an improvement that meets or exceeds this threshold, AirMatch will not trigger a channel change.

 

This channel quality setting only applies to scheduled updates. If you manually trigger an update using the airmatch runnow command, AirMatch will deploy the new solution regardless of the level of improvement.

Initial RF Calculations

The database for the AirMatch service is empty when Mobility Master first boots up. When Mobility Master first detects APs on the network, it enters its initial optimization phase, collects data from all the APs, and generates an incremental solution every 30 minutes (by default) for the next eight hours. When this initial eight-hour period has elapsed, the AirMatch service will periodically calculate a new RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. configuration for these devices.

When a new AP is deployed on a network with an active Mobility Master during the initial 8-hour AirMatch optimization phase that AP joins the network with its preassigned channel and transmission power values. The AirMatch service detects the newly deployed AP on the network, restarts its RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. computations, and sends an incremental RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. configuration update to the new AP 30 minutes later. APs added to the network after the initial 8-hour optimization period will not receive an additional RF Radio Frequency. RF refers to the electromagnetic wave frequencies within a range of 3 kHz to 300 GHz, including the frequencies used for communications or Radar signals. configuration update until the next scheduled update period.

For more information on AirMatch configuration and management, see Configuring AirMatch

Analytics Integration with Airmatch

Network Analytics Engine aggregates the network data, monitoring, and troubleshooting content of a particular network. Analytics and data mining systems use this content through APIs Application Programming Interface. Refers to a set of functions, procedures, protocols, and tools that enable users to build application software. to detect and analyze problems. Starting from ArubaOS 8.4.0.0, the ArubaOS Mobility Master infrastructure is integrated with analytics engine. The analytics engine can push radio profile EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. recommendations, channel-bandwidth recommendations, and regulatory domain profile recommendations to an AP.

For EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. recommendations, AirMatch sees the recommended configurations from the analytics engine and computes EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. min (eirp-min), EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. max (eirp-max), and EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. offset (eirp-offset). ArubaOS validates these recommendations and overrides the current configuration of an AP.

 

This feature is not supported in stand-alone mode or Mobility Controller mode.