AirLive WN-301USB - Manual (Page 58)

WN-301USB User’s Manual 52
ACK Timeout
Acknowledgement Timeout Windows. When a packet is sent out from one wireless station to the
other, it will waits for an Acknowledgement frame from the remote station. The station will only wait
for a certain amount of time; this time is called the ACK timeout. If the ACK is NOT received within
that timeout period then the packet will be re-transmitted resulting in reduced throughput. If the ACK
setting is too high then throughput will be lost due to waiting for the ACK Window to timeout on lost
packets. If the ACK setting is too low then the ACK window will have expired and the returning packet
will be dropped, greatly lowering throughput. By having the ability to adjust the ACK setting we can
effectively optimize the throughput over long distance links. This is especially true for 802.11a and
802.11g networks. Setting the correct ACK timeout value needs to consider 3 factors: distance, AP
response time, and interference.
Bandwidth Management
Bandwidth Management controls the transmission speed of a port, user, IP address, and application.
Router can use bandwidth control to limit the Internet connection speed of individual IP or Application.
It can also guarantee the speed of certain special application or privileged IP address - a crucial
feature of QoS (Quality of Service) function.
Bootloader
Bootloader is the under layering program that will start at the power-up before the device loads
firmware. It is similar to BIOS on a personal computer. When a firmware crashed, you might be able
to recover your device from bootloader.
Bridge
A product that connects 2 different networks that uses the same protocol. Wireless bridges are
commonly used to link network across remote buildings. For wireless application, there are 2 types of
Bridges. WDS Bridge can be used in Point-to-Point or Point-to-Multipoint topology. Bridge
Infrastructure works with AP mode to form a star topology.