Quidway WB2011, User Manual

Page: 131 / 157

Wireless Interface Commands
6-51
6
Command Usage
The beacon signals allow remote bridges to maintain contact with the local
wireless bridge. They may also carry power-management information.
Example
dtim-period
This command configures the rate at which remote bridges in sleep mode must
wake up to receive broadcast/multicast transmissions.
Syntax
dtim-period < interval>
interval - Interval between the beacon frames that transmit broadcast or
multicast traffic. (Range: 1-255 beacon frames)
Default Setting
2
Command Mode
Interface Configuration (Wireless)
Command Usage
• The Delivery Traffic Indication Map (DTIM) packet interval value indicates
how often the MAC layer forwards broadcast/multicast traffic. This
parameter is necessary to wake up remote bridges that are using Power
Save mode.
• The DTIM is the interval between two synchronous frames with broadcast/
multicast information. The default value of 2 indicates that the wireless
bridge will save all broadcast/multicast frames for the Basic Service Set
(BSS) and forward them after every second beacon.
• Using smaller DTIM intervals delivers broadcast/multicast frames in a more
timely manner, causing remote bridges in Power Save mode to wake up
more often and drain power faster. Using higher DTIM values reduces the
power used by remote bridges in Power Save mode, but delays the
transmission of broadcast/multicast frames.
Example
Outdoor Bridge(if-wireless a)#beacon-interval 150
Outdoor Bridge(if-wireless a)#
Outdoor Bridge(if-wireless a)#dtim-period 100
Outdoor Bridge(if-wireless a)#