Advanced Access Port Settings - Motorola WS2000 - Wireless Switch - Network Management Device System Reference Manual

Support Short
Preamble
802.11 b/g mode
DTIM per BSS
(AP 300 only)
Click the Apply button to save changes.

5.6 Advanced Access Port Settings

The WS 2000 Wireless Switch GUI allows the administrator to configure the Access Port settings. To
examine or change that information:
1. Select Network Configuration
+ to the left of the menu item. The detected Access Ports will be listed under the menu item.
Check the Support Short Preamble
the MUs using a short 56-bit preamble.
A preamble is the beginning part of a frame. The preamble comprises such elements as
robust carrier sensing, collision detection, equalizer training, timing recovery, and gain
adjustment. The administration can choose between a long or short preamble for data-
frame transmission from the WLAN's adopted Access Ports.
Use the long preamble setting (the default) for legacy wireless equipment that is not
capable of dealing with short preambles. Use the short preamble setting where legacy
equipment is not an issue and maximum throughput is desired, for example when
streaming video or Voice-over-IP applications are used.
b/g
Use this menu to set radio rates on the Access Port to one of the following settings:
B and G: Clients that support 802.11b and/or 802.11g rates may associate with the
Access Port.
G only: Only clients that support 802.11g rates may associate with the Access Port.
B only: Only clients that support 802.11b rates may associate with the Access Port.
b/g
DTIM Per BSS—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.
On the AP300, the administrator can specify a
period for the Delivery Traffic Indication
Message (DTIM) per BSSID. 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.
a/b/g
--> Wireless
box to allow the Access Port to communicate with
--> Access Ports from the left menu and then click the
5-23
Wireless Configuration