Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) User Manual
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Brocade Mobility RFS Controller System Reference Guide
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Smart RF also provides self-healing functions by monitoring the network in real-time and provides
automatic mitigation from potentially problematic events such as radio interference, non-WiFi
interference (noise), external WiFi interference, coverage holes and radio failures. Smart RF
employs self-healing to enable a WLAN to better maintain wireless client performance and site
coverage during dynamic RF environment changes, which typically require manual reconfiguration
to resolve.
Smart RF is supported on any RF Domain manager. In standalone environments, individual
controllers, service platforms or Access Points manage the calibration and monitoring phases. In
clustered environments, a single controller or service platform is elected a Smart RF master and
the remaining cluster members operate as Smart RF clients. In cluster operation, the Smart RF
master co-ordinates the calibration and configuration and during the monitoring phase receives
information from the Smart RF clients.
Brocade recommends you keep in mind that if a Smart RF managed radio is operating in WLAN
mode on a channel requiring DFS, it will switch channels if radar is detected.
•
If Smart RF is enabled, the radio picks a channel defined in the Smart RF policy.
•
If Smart RF is disabled, but a Smart RF policy is mapped, the radio picks a channels specified
in the Smart RF policy
•
If no SMART RF policy is mapped, the radio selects a random channel
If the radio is a dedicated sensor, it stops termination on that channel if a neighboring Access
Points detects radar. The Access Point attempts to come back to its original channel (statically
configured or selected by Smart RF) after the channel evacuation period has expired.
Change this behavior using a no dfs-rehome command from the controller or service platform
CLI. This keeps the radio on the newly selected channel and prevents the radio from coming back
to the original channel, even after the channel evacuation period.
NOTE
RF planning must be performed to ensure overlapping coverage exists at a deployment site for
Smart RF to be a viable network performance tool. Smart RF can only provide recovery when Access
Points are deployed appropriately. Smart RF is not a solution, it's a temporary measure.
Administrators need to determine the root cause of RF deterioration and fix it. Smart RF
history/events can assist.
To define a Smart RF policy:
1. Select Configuration > Wireless > Smart RF Policy to display existing Smart RF policies.
The Smart RF screen lists those Smart RF policies created thus far. Any of these policies
can be selected and applied.
The user has the option of displaying the configurations of each Smart RF Policy defined
thus far, or referring to the Smart RF Browser and either selecting individual Smart RF
polices or selecting existing RF Domains to review which Smart RF policies have been
applied. For more information on how RF Domains function, and how to apply a Smart RF
policy, see