Allied Telesis AT-WA7501, AT-WA7500 manual 125

AT-WA7500 and AT-WA7501 Installation and User’s Guide

Table 39. 802.11a Radio Advanced Parameter Descriptions (Continued)

Parameter	Description
Data Rate	Choose the rate at which the access point
	transmits data. In general, higher speeds mean
	shorter range and lower speeds mean longer
	range.
	If you choose the Speed Mode to be 802.11
	compliant, you can set this rate to 54, 48, 36, 24,
	12, or 6 Mbps.
Allow Data Rate	Determines if you want the radio to drop to a
Fallback	slower data rate when it has trouble
	communicating with another radio.
	If this parameter is disabled, the Basic Rate
	parameter is not available because the basic rate
	becomes the same value as the Data Rate
	parameter.
Basic Rate	Appears only if the Allow Data Rate Fallback
	parameter is enabled.
	Choose the rate at which the access point
	transmits multicast and beacon frames. In
	general, higher speeds mean shorter range and
	lower speeds mean longer range. Do not set this
	rate higher than the maximum rate at which your
	end devices can receive multicast frames. You
	can set this rate to 24, 12, or 6 Mbps. This
	parameter should usually be left at the default of
	6 Mbps.
Reservation	You may need to set a threshold value, which is
Threshold	the largest data frame that can be transmitted
	without reserving airtime. Airtime is normally
	reserved to help prevent collisions with other
	transmitters.
	If you set this threshold to 2347, this parameter is
	disabled.
Fragmentation	Specifies the largest data frame that can be
Threshold	transmitted without fragmentation. On certain
	radios, the fragmentation does not occur unless
	the radio detects interference. Larger frame sizes
	can improve throughput on a reliable connection.
	Smaller frame sizes can improve throughput on a
	poor connection.

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