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Table 9: Wireless Interface Parameters
Parameter
DTIM Period
RTS/CTS Medium
Reservation
Enable Closed System
Wireless Service Status
Dynamic Frequency Selection (DFS)
AP-7s sold in Europe use a technique called Dynamic Frequency Selection (DFS) to
automatically select an operating channel. During boot-up, the AP scans the available
frequency and selects a channel that is free of interference. If the AP subsequently detects
interference on its channel, it automatically reboots and selects another channel that is free of
interference.
DFS only applies to AP-7s used in Europe (i.e., units whose regulatory domain is set to ETSI).
The European Telecommunications Standard Institute (ETSI) requires that 802.11a devices
use DFS to prevent interference with radar systems and other devices that already occupy the 5
GHz band.
If you are using an 802.11a AP in Europe, keep in mind the following:
You cannot configure the DFS parameter. It is always enabled and cannot be disabled.
•
You cannot manually select the device's operating channel; you must let DFS select the
•
channel.
You cannot configure the Auto Channel Select option. Within the HTTP or CLI interface,
•
this option always appears enabled.
Description
The Deferred Traffic Indicator Map (DTIM) is used with clients that
have power management enabled. DTIM should be left at 1, the
default value, if any clients have power management enabled. This
parameter supports a range between 1 and 255.
This parameter affects message flow control and should not be
changed under normal circumstances. Range is 0 to 2347. When
set to a value between 0 and 2347, the Access Point uses the
RTS/CTS mechanism for packets that are the specified size or
greater. When set to 2347 (the default setting), RTS/CTS is
disabled. See
RTS/CTS Medium Reservation
information.
Check this box to allow only clients configured with the Access
Point's specific Network Name to associate with the Access Point.
When enabled, a client configured with the Network Name ANY
cannot connect to the AP. This option is disabled by default.
Select shutdown to shutdown the wireless service on a wireless
interface, or resume to resume wireless service. See
Service Status
on page 72 for more information.
Interface Configuration
on page 72 for more
Wireless
Issue 1 September 2004
3 of 3
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