Draytek VigorAP 903 User Manual page 56

Antenna
Tx Power
Fragment Length
RTS Threshold
Country Code
Auto Channel Filtered
Out List
IGMP Snooping
Isolate 2.4GHz and
5GHz bands
Isolate members with
for TxBURST on the tab of Option).
VigorAP can be attached with two antennas to have good data
transmission via wireless connection. However, if you have only one
antenna attached, please choose 1T1R.
The default setting is the maximum (100%). Lowering down the value may
degrade range and throughput of wireless.
Set the Fragment threshold of wireless radio. Do not modify default value if
you don't know what it is, default value is 2346.
Minimize the collision (unit is bytes) between hidden stations to improve
wireless performance.
Set the RTS threshold of wireless radio. Do not modify default value if you
don't know what it is, default value is 2347.
VigorAP broadcasts country codes by following the 802.11d standard.
However, some wireless stations will detect / scan the country code to
prevent conflict occurred. If conflict is detected, wireless station will be
warned and is unable to make network connection. Therefore, changing
the country code to ensure successful network connection will be
necessary for some clients.
The selected wireless channels will be discarded if AutoSelect is selected
as Channel selection mode in Wireless LAN>>General Setup.
Click Enable to enable IGMP Snooping. Multicast traffic will be forwarded
to ports that have members of that group. Disabling IGMP snooping will
make multicast traffic treated in the same manner as broadcast traffic.
The default setting is "Enable". It means that the wireless client using
2.4GHz band is unable to connect to the wireless client with 5GHz band,
and vice versa.
For WLAN 2.4GHz and 5GHz set with the same SSID name:
No matter such function is enabled or disabled, clients using WLAN

2.4GHz and 5GHz can communicate for each other if Isolate
Member (in Wireless LAN>>General Setup) is NOT enabled for
such SSID.
Yet, if the function of Isolate Member (in Wireless

LAN>>General Setup) is enabled for such SSID, clients using
WLAN 2.4GHz and 5GHz will be unable to communicate with each
other.
The default setting is "Disable".
50