Wireless capacity – Brocade Mobility RFS7000-GR Controller System Reference Guide (Supporting software release 4.1.0.0-040GR and later) User Manual
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Brocade Mobility RFS7000-GR Controller System Reference Guide
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Software overview
1
When an AP fails, the Tx Power/Supported rates of APs neighboring the failed AP are adjusted. The
Tx power is increased and/or Supported rates are decreased. When the failed AP becomes
operational again, Neighbor AP’s Tx Power/Supported rates are brought back to the levels before
the self healing operation changed them.
The switch detects an AP failure when:
•
AP stops sending heartbeats.
•
AP beacons are no longer being sent. This is determined when other detector APs are no longer
hearing beacons from a particular AP.
Configure 0 (Zero) or more APs to act as either:
•
Detector APs — Detector APs scan all channels and send beacons to the switch which uses the
information for self-healing.
•
Neighbor APs — When an AP fails, neighbor APs assist in self healing.
•
Self Healing Actions — When an AP fails, actions are taken on the neighbor APs to do
self-healing.
Detector APs
Configure an AP in either – Data mode (the regular mode) or Detector mode.
In Detector mode, an AP scans all channels at a configurable rate and forwards received beacons
the switch. The switch uses the information to establish a receive signal strength baseline over a
period of time and initiates self-healing procedures (if necessary).
Neighbor configuration
Neighbor detect is a mechanism allowing an AP to detect its neighbors as well as their signal
strength. This enables you to verify your installation and configure it for self-healing when an AP
fails.
Self healing actions
If AP1 detects AP2 and AP3 as its neighbors, you can assign failure actions to AP2 and AP3
whenever AP1 fails.
Assign up to four self healing actions:
1. No action
2. Decrease supported rates
3. Increase Tx power
4. Both 2 and 3.
You can specify the Detector AP (AP2 or AP3) to stop detecting and adopt the RF settings of the
failed AP. For more information on configuring self healing, see
Wireless capacity
Wireless capacity specifies the maximum numbers of MUs, Access Ports and wireless networks
usable by a switch. Wireless capacity is largely independent of performance. Aggregate switch
performance is divided among the switch clients (MUs and Access Ports) to find the performance
experienced by a given user. Each switch platform is targeted at specific market segments, so the
capacity of each platform is chosen appropriately. Wireless switch capacity is measured by: