Compaq WL110, User Manual

Page: 16 / 144

2-4 Wireless Configurations
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A high concentration of wireless stations are operational.
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The stations experience a performance decrease in terms of network
response times as a result of the collision avoidance protocol (for more
information, see “RTS/CTS Medium Reservation” on page 6-9.
Figure 2-4 Dual Channel Configuration
If the configuration pictured in Figure 2-4, will be realized with WL510 Access
Points, each WL510 Access Point is equipped with a single WL110 PC Card.
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By configuring neighboring Access Points with different frequencies, you
create separate mediums for each wireless cell. Operating at different
channels, the stations can no longer “hear” one another, and therefore no
longer need to defer communications.
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When the configuration pictured in Figure 2-4 represents a single channel
system, both station 1 and station 2 share the same medium. Station 1 might
need to defer communication with the Access Point when it senses that
station 2 is already communicating with the Access Point in the neighboring
cell.
As is the case in any roaming environment, you must configure all Access
Points in multiple channel configurations with an identical network name.
The preferred channel separation between the channels in neighboring cells is 25
MHz (5 channels). Subject to the number of channels supported by the wireless
client adapters available in your country, this means that you can apply up to
three different channels within your wireless network (see Table 6-1 on
page 6-16 for recommended channel configurations).
Applying two channels that allow the maximum channel separation will
decrease the amount of channel cross-talk, and provide a noticeable
performance increase over networks with minimal channel separation.
To configure networks with multiple channels, refer to “Frequency Channel
Management” on page6-13.