3Com OfficeConnect 3CRWDR200A-75, User Manual

Page: 63 / 140

Internet Settings 61
Beacon Interval
: This value indicates the frequency interval of the
beacon. A beacon is a packet broadcast by the Access Point to keep
the network synchronized. A beacon includes the wireless LAN service
area, the AP address, the Broadcast destination addresses, a time
stamp, Delivery Traffic Indicator Maps, and the Traffic Indicator
Message (TIM).
XR Mode
: The router embeds the Atheros Super G technology which
stretches the performance of a WLAN by enabling long-range
connections. Select on the drop-down list to enable this feature.
RTS Threshold
(Request To Send): Should you encounter
inconsistent data flow, only minor modifications are recommended.
The threshold (number of bytes) for enabling RTS/CTS handshake.
Data with its frame size larger than this value will perform the RTS/CTS
handshake. Setting this attribute to be larger than the maximum
MSDU(MAC service data unit) size turns off the RTS/CTS handshake.
Setting this attribute to zero turns on the RTS/CTS handshake. Enter a
value between 0 and 2432.)
Fragment Threshold
:
defines a threshold above which the wireless
packet will be split up, or fragmented. For a fragmented packet, if
transmission of part of it were to be interfered with, only the portion that
was successfully transmitted would need to be re-sent. Throughput will
generally be lower for fragmented packets, since the fixed packet
overhead consumes a higher portion of the RF bandwidth.
DTIM Interval
: This value 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 Access Point has buffered broadcast or
multicast messages for associated clients, it sends the next DTIM with
a DTIM Interval value. Access Point Clients hear the beacons and
awaken to receive the broadcast and multicast messages.
Internet Settings
The Internet Settings let you view your current WAN configuration and
modify it. You may also add/delete new configuration.