Cisco Small Business WRP400 User Manual page 67

Configuring Your Wireless Network
Wireless > Advanced Wireless Settings
Cisco WRP400 User Guide
• Authentication Type: The default is set to Auto, which allows either Open
System or Shared Key authentication to be used. With Open System
authentication, the sender and the recipient do not use a WEP key for
authentication. With Shared Key authentication, the sender and recipient
use a WEP key for authentication. Select Shared Key to only use Shared
Key authentication.
• Transmission Rate: The rate of data transmission should be set depending
on the speed of your wireless network(s). You can select from a range of
transmission speeds, or you can select Auto to have the WRP400
automatically use the fastest possible data rate and enable the Auto-
Fallback feature. Auto-Fallback will negotiate the best possible connection
speed between the WRP400 and a wireless client. The default is Auto.
• CTS Protection Mode: The WRP400 will automatically use CTS (Clear-To-
Send) Protection Mode when your Wireless-G products are experiencing
severe problems and are not able to transmit to the WRP400 in an
environment with heavy 802. 1 1b traffic. This function boosts the ability of
the WRP400 to catch all Wireless-G transmissions but will severely
decrease performance. The default is Auto.
• Beacon Interval: Enter a value between 1 and 65,535 milliseconds. The
Beacon Interval value indicates the frequency interval of the beacon. A
beacon is a packet broadcast by the WRP400 to synchronize the wireless
network(s). The default value is 100.
• DTIM Interval: This value, between 1 and 255, indicates the interval of the
Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown
field informing clients of the next window for listening to broadcast and
multicast messages. When the WRP400 has buffered broadcast or
multicast messages for associated clients, it sends the next DTIM with a
DTIM Interval value. Its clients hear the beacons and awaken to receive the
broadcast and multicast messages. The default value is 1.
• RTS Threshold: If you encounter inconsistent data flow, only minor
reduction of the default value, 2347, is recommended. If a network packet is
smaller than the preset RTS threshold size, the RTS/CTS mechanism will
not be enabled. The WRP400 sends Request to Send (RTS) frames to a
particular receiving station and negotiates the sending of a data frame.
After receiving an RTS, the wireless station responds with a Clear to Send
(CTS) frame to acknowledge the right to begin transmission. The RTS
Threshold value should remain at its default value of 2347.
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