Motorola WiNG 4.4 Reference Manual page 26

1 - 10 WiNG 4.4 Switch System Reference Guide
• Strict priority - The prioritization is strict.
• Multicast prioritization - Multicast frames that match a configured multicast mask bypass the PSP queue. This features
permits intercom mode operation without delay (even in the presence of PSP MU's).
For more information on configuring voice prioritization for a target WLAN, see
Configuring WMM on page 4-64.
1.2.2.8 Self Healing
Self Healing is the ability to dynamically adjust the RF network by modifying transmit power and/or supported rates upon
an AP failure.
In a typical RF network deployment, APs are configured for Transmit Power below their maximum level. This allows the Tx
Power to be increased when there is a need to increase coverage when an AP fails.
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 Configuring Self Healing on page 5-54.