Dell PowerConnect W-Airwave Configuration Manual

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122 | Configuration Reference Dell PowerConnect W-AirWave 7.5 | Configuration GuideDSCP Mappingfor WMM VoiceACSpecify Differentiated Services Code Point (DSCP) mapping for wireless multimedia voiceadmission control. The supported range is 0 to 63.The IEEE 802.11e standard defines the mapping between WMM ACs and DSCP tags. TheWMM AC mapping setting allows you to customize the mapping between WMM ACs andDSCP tags to prioritize various traffic types: voice, video, best effort, and background.DSCP Mappingfor WMM VideoACSpecify DSCP mapping for wireless multimedia video admission control. The supportedrange is 0 to 63.DSCP Mappingfor WMM Best-Effort ACSpecify DSCP mapping for wireless multimedia best effort admission control. The supportedrange is 0 to 63.DSCP Mappingfor WMMBackground ACSpecify DSCP mapping for wireless multimedia background admission control. Thesupported range is 0 to 63.902ilCompatibilityModeNo Enable or disable support for NEC 902il compatibility.Deny BroadcastProbesNo Deny or accept broadcast probes. This setting is used in conjunction with Local ProbeResponse. An AP broadcasts its configured service set identifier (SSID), which correspondsto a specific wireless local area network (WLAN). Wireless clients discover APs by listeningfor broadcast beacons or by sending active probes to search for APs with a specific SSID.Local ProbeResponseYes For deployments where there are expected to be considerable delays between the controllerand APs (for example, in a remote location where an AP is not in range of another DellPowerConnect W AP), best practices are to enable the this option in the SSID profile.(Generating probe responses on the controller is an optimization that allows ArubaOS tomake better decisions.) This option is enabled by default.Local ProbeRequestThreshold0 The threshold, in dBm, for the bootstrap threshold to minimize the chance of the AP rebootingdue to temporary loss of connectivity with the Dell PowerConnect W controller.Disable ProbeRetryYes Prevent (disable Yes) or accept (disable No) the resending of packets in local probeoperations.NOTE: This setting requires a voice service license.Battery Boost No Battery boost converts all multicast traffic to unicast before delivery to the client. Thisfeature is disabled by default. Enabling this feature on an SSID allows you to set the DTIMinterval from 10 - 100 (the previous allowed values were 1 or 2), equating to 1,000 - 10,000milliseconds. This longer interval keeps associated wireless clients from activating theirradios for multicast indication and delivery, leaving them in powersave mode longer, and thuslengthening battery life. The DTIM configuration is performed on the WLAN, so noconfiguration is necessary on the client.NOTE: This setting requires a voice service license.NOTE: Although you can enable battery boost on a per-virtual AP basis, it must be enabledfor any SSIDs that support voice traffic.Although the multicast to unicast conversion generates more traffic, that traffic is bufferedby the AP and delivered to the client when the client emerges from power-save mode. Anassociated parameter available on some clients is the Listening Interval (LI). This defines theinterval (in number of beacons) after which the client must wake to read the TrafficIndication Map (TIM). The TIM indicates whether there is buffered unicast traffic for eachsleeping client. With battery boost enabled, the DTIM is increased but multicast traffic isbuffered and delivered as unicast. Increasing the LI can further increase battery life, but canalso decrease client responsiveness.MaximumTransmit Failures0 Specify the maximum number of transmit failures to be supported before a radio isconsidered to be down. A setting of 0 disables this feature.Table 59 Profiles > SSID Profile Settings (Continued)Field Default Description