3Com Wireless LAN 11 Mbps, User Manual

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Setting Data Transmission Properties 27
To turn off the access point DHCP server capability regardless of whether or not
another DHCP server is available, click
Disable and click Save .
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Gateways —You can specify up to three additional gateway IP addresses.
These settings are optional. (Only the default gateway is required).
Setting Data
Transmission
Properties
The Data Transmission Properties page lets you select radio channel settings and
performance settings. This page contains a link to the Advanced Settings page,
where you can set additional data transmission properties.
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Clear Channel Select —Lets the access point find a channel automatically.
When this option is enabled, the access point scans the primary channels to
determine the traffic on those channels and chooses the channel with the least
number of packets.
By default, the access point automatically selects the optimal channel for
wireless transmissions. The access point will select between channels 1–13. If
your network supports clients that do not acknowledge 13 channels, you will
have to manually select a channel within the reach of those clients. For
example, if you have clients that only support channels 1–11, you must
manually set the access point to use a specific channel in that range.
If France, you must manually select from channels 10–13.
To select a specific channel, click the off (Specify the channel) button and
choose a channel from the Channel list.
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Network Traffic Accelerator —To increase performance, click On (enhanced
performance). If you experience problems when equipment other than 3Com
11 Mbps Wireless LAN equipment is being used, click
Off .
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Data Preamble —To increase performance, click Short (enhanced
performance). When equipment that does not support short preamble is also
being used, click
Long .
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Data Rate —These settings configure the data rates used for wireless
transmissions. By default, the access point selects the best data rate for the
current connection.
If “Automatically set the best data rate” is selected, the Data Rate cannot be
selected manually.
If “Manually set the data rate” is selected, the 5.5Mbps and 11Mpbs options
become active. You may not alter the settings for the 1Mbps and 2Mbps rates
since these rates must always be available to transmit certain types of wireless
traffic.
The data rates may either be Required or Optional. When the data rate is set to
Optional, the AP determines if it is appropriate to use that data rate or if the
signal strength requires a lower data rate to be used. If the data rate is set to
Required, the AP does not have the option to modulate to a lower data rate,
and may lose connection with clients that cannot support the higher data rate.
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Beacon Period —The beacon period sets the amount of time between
beacons sent out from the AP. Normally you will not have to change this
setting, although it can be useful in extremely noisy RF environments.
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Radio Antenna —These settings determine whether the radio will use one or
two antennas. If the user attaches an external antenna, this parameter should