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6
System Configuration
Auto Channel Select – Enables the access point to automatically select an
unoccupied radio channel. (Default: Enabled)
Maximum Station Data Rate – The maximum data rate at which the access
point transmits unicast packets on the wireless interface. The maximum
transmission distance is affected by the data rate. The lower the data rate,
the longer the transmission distance. (Default: 54 Mbps)
Super G – The Atheros proprietary Super G performance enhancements
are supported by the access point. These enhancements include bursting,
compression, fast frames and dynamic turbo. Maximum throughput ranges
between 40 to 60 Mbps for connections to Atheros-compatible clients.
(Default: Disabled)
Preamble – Sets the length of the signal preamble that is used at the start of
a data transmission. (Default: Long)
• Long: Sets the preamble to long (192 microseconds). Using a long preamble
ensures the access point can support all 802.11b and 802.11g clients.
• Short or Long: Sets the preamble according to the capability of clients that are
currently asscociated. Uses a short preamble (96 microseconds) if all associated
clients can support it, otherwise a long preamble is used. The access point can
increase data throughput when using a short preamble, but will only use a short
preamble if it determines that all associated clients support it.
CLI Commands for the 802.11g Wireless Interface – From the global configuration
mode, enter the interface wireless g command to access the 802.11g radio
interface. The 802.11g radio can be forced to an 802.11g-only, 802.11b-only, or
mixed 802.11b/g operating mode using the radio-mode command. You should set
the desired operating mode before configuring channel settings (the default is mixed
802.11b/g operation). Select a radio channel or set selection to Auto using the
channel command. Set any other radio settings as required before enabling the
VAP interface (with the no shutdown command). To view the current 802.11g radio
settings for the VAP interface, use the show interface wireless g [0~3] command
as shown on
7-97.
SMC AP(config)#interface wireless g
Enter Wireless configuration commands, one per line.
Enterprise AP(if-wireless g)#radio-mode g
SMC AP(if-wireless g)#channel auto
SMC AP(if-wireless a)#transmit-power full
SMC AP(if-wireless a)#super-g
Enterprise AP(if-wireless g)#preamble short
SMC AP(if-wireless g)#
Security
The access point is configured by default as an "open system," which broadcasts a
beacon signal including the configured SSID. Wireless clients with an SSID setting
of "any" can read the SSID from the beacon and automatically set their SSID to
allow immediate connection to the nearest access point.
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