ZyXEL Communications NWA570N User Manual page 60

Chapter 6 Wireless Screens
Table 13 Wireless Settings: AP (continued)
LABEL
Wireless
Mode
HT protect
Advanced
Settings
Beacon
Interval
Intra-BSS
Traffic
DTIM Interval
Number of
Wireless
Stations
Allowed to
Associate:
Radio Enable
A-MPDU
aggregation
A-MSDU
aggregation
RIFS
60
DESCRIPTION
Select 802.11b/g to allow IEEE 802.11b and IEEE 802.11g compliant WLAN
devices to associate with the device.
Select 802.11n/g to allow IEEE 802.11n and IEEE 802.11g compliant WLAN
devices to associate with the device.
Select HT protect if you have devices on your wireless network that support IEEE
802.1b/g standards but not the IEEE 802.1n draft 2.0 standard.
If all devices on your wireless network support IEEE 802.1n draft 2.0, deselect HT
protect for higher data transmission rates.
A beacon transmits important information to stations on the wireless network. Set
the number of milliseconds that should pass between the sending out of beacons.
Selecting a low number increases the frequency of beacons. This increases
network overhead, but improves wireless device association and roaming.
However, it also reduces power saving as wireless stations in sleep mode must
awaken more often.
Selecting a high number reduces the frequency of beacons, reducing network
overhead, increasing data transmission rates and increasing power savings.
However, association of wireless devices and roaming becomes more difficult.
A Basic Service Set (BSS) exists when all communications between wireless
clients or between a wireless client and a wired network client go through one
access point (AP). Intra-BSS traffic is traffic between wireless stations in the same
BSS.
Enable Intra-BSS Traffic to allow wireless stations connected to the device to
communicate with each other.
Disable Intra-BSS Traffic to only allow wireless stations to communicate with the
wired network, not with each other. This option is more secure.
See Appendix C on page 125
Set the interval for wireless clients in sleep mode to wake up and check for
multicast or broadcast traffic.
The AP includes a Delivery Traffic Indication Message (DTIM) in the beacon to
notify wireless clients in sleep mode that there is a multicast or broadcast packet
awaiting delivery. The DTIM interval is a multiple of the beacon interval. For
example, if the beacon interval is 100 milliseconds and the DTIM interval is 2, the
AP includes a DTIM with every second beacon (or every 200 milliseconds).
Use this field to set a maximum number of wireless stations that may connect to
the device.
Enter the number (from 1 to 32) of wireless stations allowed.
Turn on the wireless adapter to allow wireless communications between the
device and other IEEE 802.11b/g and IEEE 802.11n draft 2.0 compliant wireless
devices. Turn off the wireless adapter to stop wireless communications between
the device and other IEEE 802.11b/g and IEEE 802.11n draft 2.0 compliant
wireless devices.
Select Yes to enable the grouping of several A-MSDU (Aggregate MAC Service
Data Units) into one large A-MPDU (Aggregate MAC Protocol Data Unit). When
combined with A-MSDU aggregation this function allows faster data transfer
rates.
Select Yes to enable the grouping of small groups of data (MAC Service Data
Units, or MSDU) into one large unit of MSDUs called an Aggregate MSDU (A-
MSDU).
Select Yes to enable RIFS (Reduced Interframe Spacing) and to increase data
transfer rates.
for more information.
ZyXEL NWA570N User's Guide