Draytek Vigor2930 Series User Manual page 170

Hide SSID
SSID
Isolate
Channel
Long Preamble
Packet-OVERDRIVE
162
Check it to prevent from wireless sniffing and make it
harder for unauthorized clients or STAs to join your
wireless LAN. Depending on the wireless utility, the user
may only see the information except SSID or just cannot
see any thing about Vigor wireless router while site
surveying. The system allows you to set four sets of
SSID for different usage. In default, the first set of SSID
will be enabled. You can hide it for your necessity.
Means the identification of the wireless LAN. SSID can
be any text numbers or various special characters. The
default SSID is "default". We suggest you to change it.
LAN – Check this box to make the wireless clients
(stations) with the same SSID cannot access wired
PCs on LAN.
Member –Check this box to make the wireless
clients (stations) with the same SSID not accessing
for each other.
Means the channel of frequency of the wireless LAN.
The default channel is 6. You may switch channel if the
selected channel is under serious interference. If you have
no idea of choosing the frequency, please select Auto to
let system determine for you.
This option is to define the length of the sync field in an
802.11 packet. Most modern wireless network uses short
preamble with 56 bit sync filed instead of long preamble
with 128 bit sync field. However, some original 11b
wireless network devices only support long preamble.
Check it to use Long Preamble if needed to
communicate with this kind of devices.
This feature can enhance the performance in data
transmission about 40%* more (by checking Tx Burst).
It is active only when both sides of Access Point and
Station (in wireless client) invoke this function at the
same time. That is, the wireless client must support this
feature and invoke the function, too.
Note: Vigor N61 wireless adapter supports this function.
Therefore, you can use and install it into your PC for
matching with Packet-OVERDRIVE (refer to the
Vigor2930 Series User's Guide