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4 - 4 Aironet 340 Series Bridge
Basic Rates (Basic_rates)
When a repeater associates to a root unit data is usually transmitted
between the units at the highest rate that they both support. The units
may also downshift to use lower common rates if conditions warrant it.
The basic rates option is set on the root bridge. It is the set of rates that
all nodes in the radio cell must support or they will not be allowed to
associate.
The lowest basic rate is use to transmit all broadcast and multicast traffic
as well as any association control packets. Using the lowest rate
helps ensure they will be received by all nodes even at the farthest distances.
The highest basic rate determines the maximum rate at which an
acknowledge packet may be transmitted.
Selecting Frequency (Frequency)
The actual frequency allowed depends on the regulatory body that controls
the radio spectrum in the location in which the unit is used. If the
setting is left as “auto”, the unit will sample all the allowed frequencies
when it is first started and try to pick one that is not in use.
This setting is only allowed on the root unit as it is in charge of setting
up the radio cell
Setting the Distance (Distance)
Since the radio link between bridges can be quite long, the time it takes
for the radio signal to travel between the radios can become significant.
This parameter is used to adjust the various timers used in the radio protocol
to account for the extra delay.
The parameter is only entered on the root bridge, which will tell all the
repeaters. It should be entered as the distance in kilometers of the longest
radio link in the set of bridges.