Cisco Cisco Aironet 340 Ethernet Bridges Mode D'Emploi
Configuring the Radio Network 4 - 5
Using the Configuration Radio IEEE 802.11 Menu
Setting the Beacon Period (Beacon)
The beacon interval is the time (in kilo-microseconds) between trans-
missions of the IEEE 802.11 beacon packet. The beacon packets are pri-
marily used for radio network synchronization.
missions of the IEEE 802.11 beacon packet. The beacon packets are pri-
marily used for radio network synchronization.
A small beacon period means faster response for roaming nodes. The
default value is typically adequate.
default value is typically adequate.
Setting the Forwarding Time Interval (DTIM)
The DTIM count determines the count of normal beacons between the
special DTIM beacons. If there no power saving client nodes in a cell, as
is usually the case with bridges, it is not used.
special DTIM beacons. If there no power saving client nodes in a cell, as
is usually the case with bridges, it is not used.
If there are power saving nodes present, the 802.11 protocol defines that
all power saving nodes must, at the minimum, wake up to receive the
DTIM beacons. If power save nodes are present, the AP will also buffer
any multicast packets it receives from the LAN and only transmit them
after the DTIM beacon.
all power saving nodes must, at the minimum, wake up to receive the
DTIM beacons. If power save nodes are present, the AP will also buffer
any multicast packets it receives from the LAN and only transmit them
after the DTIM beacon.
Setting the DTIM count low causes the multicasts to be transmitted
more frequently, but sets a lower upper limit as to how long a power
save node may remain asleep.
more frequently, but sets a lower upper limit as to how long a power
save node may remain asleep.
Configuration Radio I80211 Menu
Option Value Description
1 - Beacon [ 100 ] - Beacon period in Kusec
2 - Dtim [ 2 ] - DTIM interval
3 - Extend [ on ] - Allow proprietary extensions
4 - Bcst_ssid [ on ] - Allow broadcast SSID
5 - Rts [ 2048 ] - RTS/CTS packet size threshold
6 - Privacy [ menu ] - Privacy configuration
7 - Encapsulation [ menu ] - Configure packet encapsulation
Enter an option number or name, “=” main menu, <ESC> previous menu
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