Specifications

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Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges
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Chapter 2 Cisco IOS Commands for Access Points and Bridges
beacon
Syntax Description
Defaults The default period is 100.
The default dtim-period is 2.
Command Modes Configuration interface
Command History
Usage Guidelines Clients normally wake up each time a beacon is sent to check for pending packets. Longer beacon
periods let the client sleep longer and preserve power. Shorter beacon periods reduce the delay in
receiving packets.
Controlling the DTIM period has a similar power-saving result. Increasing the DTIM period count lets
clients sleep longer, but delays the delivery of multicast packets. Because multicast packets are buffered,
large DTIM period counts can cause a buffer overflow.
Examples This example shows how to specify a beacon period of 15 Kms (15.36 milliseconds):
AP(config-if)# beacon period 15
This example shows how to set the beacon parameter to defaults:
AP(config-if)# no beacon
Related Commands
period Kms Specifies the beacon time in Kilomicroseconds (Kms). Kms is a unit of
measurement in software terms. K = 1024, m = 10-6, and s = seconds,
so Kms = 0.001024 seconds, 1.024 milliseconds, or 1024 microseconds.
dtim-period count Specifies the number of DTIM beacon periods to wait before delivering
multicast packets.
Note The dtim-period option is not supported on bridges.
Release Modification
12.2(4)JA This command was introduced.
Command Description
show running-config Displays the current access point operating configuration