D-Link CP310 User Guide - Page 190
Automatic., ANT 1., Manually Configuring a WLAN, D-Link NetDefend firewall User Guide
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Manually Configuring a WLAN In this field... Do this... Antenna Selection Multipath distortion is caused by the reflection of Radio Frequency (RF) signals traveling from the transmitter to the receiver along more than one path. Signals that were reflected by some surface reach the receiver after non-reflected signals and distort them. NetDefend firewalls avoid the problems of multipath distortion by using an antenna diversity system. To provide antenna diversity, each wireless security appliance has two antennas. Specify which antenna to use for communicating with wireless stations: • Automatic. The NetDefend firewall receives signals through both antennas and automatically selects the antenna with the lowest distortion signal to use for communicating. The selection is made on a per-station basis. This is the default. • ANT 1. The ANT 1antenna is always used for communicating. • ANT 2. The ANT 2 antenna is always used for communicating. Use manual diversity control (ANT 1 or ANT 2), if there is only one antenna connected to the appliance. Fragmentation Threshold Type the smallest IP packet size (in bytes) that requires that the IP packet be split into smaller fragments. If you are experiencing significant radio interference, set the threshold to a low value (around 1000), to reduce error penalty and increase overall throughput. Otherwise, set the threshold to a high value (around 2000), to reduce overhead. The default value is 2346. 174 D-Link NetDefend firewall User Guide