Motorola AP-7131N-FGR, Product Reference Manual

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Network Management 5-67
5. Refer to the Beacon Settings field to set the radio beacon and DTIM intervals.
Beacon Interval The beacon interval controls the performance of power save
stations. A small interval may make power save stations more
responsive, but it will also cause them to consume more battery
power. A large interval makes power save stations less responsive,
but could increase power savings. The default is 100. Avoid
changing this parameter as it can adversely affect performance.
DTIM Interval The DTIM interval defines how often broadcast frames are
delivered for each of the four access point BSSIDs. If a system has
an abundance of broadcast traffic and it needs to be delivered
quickly, Motorola recommends decreasing the DTIM interval for
that specific BSSID. However, decreasing the DTIM interval
decreases the battery life on power save stations. The default is 10
for each BSSID. Motorola recommends using the default value
unless qualified to understand the performance risks of changing it.