Radio-Specific Settings - Motorola WS2000 - Wireless Switch - Network Management Device System Reference Manual

5-22 WS2000 Wireless Switch System Reference Guide
Beacon
Settings

5.5.2 Radio-Specific Settings

The fields below are only available for some radio types, as indicated in the second column.
Uniform
Spreading (AP
300 only)
Set the Access Port beacon settings by
clicking on the Beacon Settings
Set the following beacon values.
Beacon Interval—A beacon is a packet
broadcast by the adopted Access Ports to
keep the network synchronized. Included in a
beacon is information such as the WLAN
service area, the access-port address, the
broadcast destination addresses, a time
stamp, and indicators about traffic and
delivery such as a DTIM.
Specify a beacon interval in units of 1,000 microseconds (K-us). This is a multiple of the DTIM
value, for example, 100 : 10. Increase the DTIM/beacon settings, lengthening the time, to let
nodes sleep longer and preserve their battery life. Decreasing this value (shorten the time) to
support streaming-multicast audio and video applications that are jitter-sensitive.
DTIM Period—A DTIM is periodically included in the beacon frame that is transmitted from
adopted Access Ports. The DTIM period determines how often the beacon contains a DTIM, for
example, 1 DTIM for every 10 beacons. The DTIM indicates that broadcast and multicast frames,
buffered at the Access Port, are soon to arrive. These are simple data frames that require no
acknowledgment, so nodes sometimes miss them.
In this field, the administrator can specify a period for the Delivery Traffic Indication Message
(DTIM). This is a divisor of the beacon interval (in milliseconds); for example, 10 : 100. Increase
the DTIM/beacon settings, lengthening the time, to let nodes sleep longer and preserve their
battery life. Decrease this settings (shortening the time) to support streaming-multicast audio
and video applications that are jitter-sensitive.
Primary WLAN—Select the primary WLAN when the 802.11a broadcast protocol is used.
When a WLAN is associated with a 801.11a broadcaster, only one ESSID can be broadcast from
the Access Port (even though three are supported by the switch). This field specifies which
ESSID to broadcast.
Security Beacon—Check the
Port needs to be secure. If this feature is selected, the WLAN will not broadcast the ESSID. This
selection eliminates the possibility of hackers tapping in to the WLAN without authorization by
"stealing" the ESSID.
Check this checkbox to enable the Uniform Spreading feature of the AP 300. To comply
with Dynamic Frequency Selection (DFS) requirements in the European Union, the
802.11a radio on AP 300 Access Ports will come up on a random channel each time it
is powered on.
NOTE: To change the channel on the 802.11a radio for an AP 300 Access
Port, this box MUST be unchecked.
a
button.
Security Beacon box if the WLAN associated with the Access