Wireless-G Broadband Router
51
Instant Wireless
®
Series
Transmission Rate
The default setting is
Auto
. The range is from 1 to
54Mbps. The rate of data transmission should be set depending on the speed of
your wireless network. You can select from a range of transmission speeds, or
keep the default setting, Auto, to have the Router automatically use the fastest
possible data rate and enable the Auto-Fallback feature. Auto-Fallback will
negotiate the best possible connection speed between the Router and a wireless
client.
Beacon Interval
The default value is
100
. 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 Router to synchronize the wire-
less network.
RTS Threshold
This value should remain at its default setting of
2347
. The
range is 0-2347 bytes. Should you encounter inconsistent data flow, only minor
modifications are recommended. If a network packet is smaller than the preset
RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router
sends Request to Send (RTS) frames to a particular receiving station and nego-
tiates 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.
Fragmentation Threshold
This value should remain at its default setting of
2346
. The range is 256-2346 bytes. It specifies the maximum size for a packet
before data is fragmented into multiple packets. If you experience a high pack-
et error rate, you may slightly increase the Fragmentation Threshold. Setting
the Fragmentation Threshold too low may result in poor network performance.
Only minor modifications of this value are recommended.
DTIM Interval
The default value is
3
. This value, between 1 and 255 mil-
liseconds, indicates the interval of the Delivery Traffic Indication Message
(DTIM). A DTIM field is a countdown field informing clients of the next win-
dow for listening to broadcast and multicast messages. When the Router 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 awak-
en to receive the broadcast and multicast messages.
Wireless MAC Filters
The Wireless MAC Filters feature allows you to con-
trol which wireless-equipped PCs may or may not communicate with the
Router-depending on their MAC addresses. To disable the Wireless MAC
Filters feature, keep the default setting,
Disable
. To set up a filter, click
Enable
,
and follow these instructions:
50
1.
If you want to block specific wireless-equipped PCs from communicating
with the Router, then keep the default setting,
Prevent PCs listed from
accessing the wireless network
. If you want to allow specific wireless-
equipped PCs to communicate with the Router, then click the radio button
next to
Permit only PCs listed to access the wireless network
.
2. Click the
Edit MAC Filter List
button. Enter the appropriate MAC
addresses into the
MAC
fields (see Figure 6-18).
3. Click the
Apply
but-
ton
to
save
your
changes. Click the
Cancel
button
to
cancel your unsaved
changes. Click the
Close
button
to
return
to
the
Advanced
Wireless
screen without sav-
ing changes.
4. On the
MAC Address
Filter List
screen,
click the
Wireless
Client MAC List
button to view a list
of
the
wireless-
equipped PCs (see
Figure 6-19).
Note:
For each
MAC
field, the MAC address should be entered in this
format: xxxxxxxxxxxx (the x's represent the actual characters of the
MAC address).
Figure 6-18
19216811.live