Технические ссылки для Cisco Cisco 4100 Series Wireless LAN Controller
3/22/05
config 802.11a disable
OL-7427-01 Rev 1
Related Commands
show 802.11a, config 802.11a disable, config 802.11a enable, config 802.11b
channel
channel
config 802.11a disable
config 802.11a disable
To disable 802.11a transmission, use the config 802.11a disable command.
Disable 802.11a transmissions for the whole network or for an individual Cisco Radio using the config
802.11a disable command.
Note that you must use this command to disable the network before using many config 802.11a
commands.
This command can be used any time the CLI interface is active.
Disable 802.11a transmissions for the whole network or for an individual Cisco Radio using the config
802.11a disable command.
Note that you must use this command to disable the network before using many config 802.11a
commands.
This command can be used any time the CLI interface is active.
>
config 802.11a disable {network/<Cisco 1000 Series lightweight access
point>}
Syntax
config
Configure parameters.
802.11a
802.11a network parameters.
disable
Disable 802.11a.
network
Whole network.
<Cisco 1000 Series lightweight access point>Override the network setting for
an individual <Cisco 1000 Series lightweight access
point> Cisco Radio.
point> Cisco Radio.
Defaults
Network = enabled.
Examples
To disable the whole 802.11 a network:
>config 802.11a disable network
>config 802.11a disable network
To disable AP1 802.11a transmissions:
>config 802.11a disable AP1
>config 802.11a disable AP1
Related Commands
show sysinfo, show 802.11a, config 802.11a enable, config 802.11b disable,
config 802.11b enable, config 802.11a beaconperiod
config 802.11b enable, config 802.11a beaconperiod
config 802.11a dtim
config 802.11a dtim
In 802.11 networks, the Cisco 1000 Series lightweight access point WLANs broadcast a beacon at
regular intervals, which coincides with the DTIM (Delivery Traffic Indication Map). After the DTIM, if the
Cisco 1000 Series lightweight access point has any frames buffered for broadcast or multicast, it
transmits the buffered frames. This protocol allows power-saving clients to wake up at the appropriate
time if they are expecting broadcast or multicast data.
Normally, the DTIM value is set to 1 (transmit broadcast and multicast after every beacon) or 2
(transmit after every other beacon). For instance, if the beaconperiod is 100 ms, and the DTIM value is
set to 1, the Cisco 1000 Series lightweight access point transmits buffered broadcast and multicast
frames 10 times a second; if the beaconperiod is 100 ms, and the DTIM value is set to 2, the Cisco
1000 Series lightweight access point transmits buffered broadcast and multicast frames five times a
second; either of these settings may be suitable for applications, including VoIP, that expect frequent
broadcast and multicast frames.
However, the DTIM value can be set as high as 255 (transmit broadcast and multicast after every 255th
beacon), if all 802.11a clients have power save enabled. Because the clients only have to listen when
the DTIM time is reached, they can be set to listen for broadcasts and multicasts less frequently,
resulting in longer battery life. For instance, if the beaconperiod is 100 ms, and the DTIM value is set to
100, the Cisco 1000 Series lightweight access point transmits buffered broadcast and multicast frames
regular intervals, which coincides with the DTIM (Delivery Traffic Indication Map). After the DTIM, if the
Cisco 1000 Series lightweight access point has any frames buffered for broadcast or multicast, it
transmits the buffered frames. This protocol allows power-saving clients to wake up at the appropriate
time if they are expecting broadcast or multicast data.
Normally, the DTIM value is set to 1 (transmit broadcast and multicast after every beacon) or 2
(transmit after every other beacon). For instance, if the beaconperiod is 100 ms, and the DTIM value is
set to 1, the Cisco 1000 Series lightweight access point transmits buffered broadcast and multicast
frames 10 times a second; if the beaconperiod is 100 ms, and the DTIM value is set to 2, the Cisco
1000 Series lightweight access point transmits buffered broadcast and multicast frames five times a
second; either of these settings may be suitable for applications, including VoIP, that expect frequent
broadcast and multicast frames.
However, the DTIM value can be set as high as 255 (transmit broadcast and multicast after every 255th
beacon), if all 802.11a clients have power save enabled. Because the clients only have to listen when
the DTIM time is reached, they can be set to listen for broadcasts and multicasts less frequently,
resulting in longer battery life. For instance, if the beaconperiod is 100 ms, and the DTIM value is set to
100, the Cisco 1000 Series lightweight access point transmits buffered broadcast and multicast frames