User`s guide

Chapter 8 MBSSID and SSID
NWA3550 User’s Guide
116
Disable channel
switching for DFS
This field is available when you select 802.11a in the 802.11 Mode field.
DFS (dynamic frequency selection) allows an AP to detect other devices in
the same channel. If there is another device using the same channel, the AP
changes to a different channel, so that it can avoid interference with radar
systems or other wireless networks.
Select this option to disable DFS on the ZyXEL Device when 802.11 Mode is
set to 802.11a.
RTS/CTS Threshold The threshold (number of bytes) for enabling RTS/CTS handshake. Data with
a frame size larger than this value will perform the RTS/CTS handshake.
Setting this attribute to be larger than the maximum MSDU (MAC service data
unit) size turns off the RTS/CTS handshake. Setting this attribute to its lowest
value (256) turns on the RTS/CTS handshake. Enter a value between 256
and 2346.
This field is not available when Super Mode is selected.
Fragmentation
Threshold
The threshold (number of bytes) for the fragmentation boundary for directed
messages. It is the maximum data fragment size that can be sent. Enter an
even number between 256 and 2346.
This field is not available when Super Mode is selected.
Output Power Set the output power of the ZyXEL Device in this field. If there is a high
density of APs in an area, decrease the output power to reduce interference
with other APs. Select one of the following 100%, 50%, 25%, 12.5% or
Minimum. See the product specifications for more information on your ZyXEL
Device’s output power.
This field is not available when you select 802.11a in the 802.11 Mode field.
Select SSID Profile An SSID profile is the set of parameters relating to one of the ZyXEL Device’s
BSSs. The SSID (Service Set IDentifier) identifies the Service Set with which
a wireless station is associated. Wireless stations associating with the access
point (AP) must have the same SSID.
Note: If you are configuring the ZyXEL Device from a computer
connected to the wireless LAN and you change the
ZyXEL Device’s SSID or security settings, you will lose
your wireless connection when you press Apply to
confirm. You must then change the wireless settings of
your computer to match the ZyXEL Device’s new
settings.
Index This is the index number of the SSID profile.
Active Select the check box to activate an SSID profile.
Profile Select the profile(s) of the SSIDs you want to use in your wireless network.
You can have up to eight BSSs running on the ZyXEL Device simultaneously,
one of which is always the pre-configured VoIP_SSID profile and another of
which is always the pre-configured Guest_SSID profile.
Configure SSID profiles in the SSID screen.
Enable Spanning Tree
Control (STP)
(R)STP detects and breaks network loops and provides backup links between
switches, bridges or routers. It allows a bridge to interact with other (R)STP -
compliant bridges in your network to ensure that only one path exists between
any two stations on the network. Select the check box to activate STP on the
ZyXEL Device.
Table 33 Wireless: Multiple BSS
LABEL DESCRIPTION