User guide

Advanced Network Configurations
8-3
Alvarion
Advanced Parameters
If you created a basic Base Station configuration, as described in the previous
section, you may have already noticed the additional buttons in the setup
window, as pictured in Figure 4-12.
Frequency
The Frequency setup menu gives you the ability to select an operating
frequency from a range of sub-channels within the 2.4 GHz frequency band.
The number of selectable channels is determined by the radio regulations that
apply in your country.
Click the
Advanced button on the Wireless Interfaces tab of the edit mode to
change the frequency parameters.
To optimize network traffic, we recommend that you assign different operating
frequencies to Base Stations that service neighboring wireless cells. Doing so,
stations in each of the cells will be able to use the maximum bandwidth available
to their cell.
Wireless stations equipped with Wireless Client Adapters can dynamically
change the operating channel when roaming between Base Stations that
operate at different sub-channels.
RTS/CTS Medium Reservation
RTS/CTS medium reservation may provide a solution for networks where:
! Density of stations and Base Stations is very low.
! You witness poor network performance due to excessive frame collisions at
the Base Stations.
However in most networking environments it is very unlikely that you will need
to enable RTS/CTS medium reservation on the Base Station to prevent
collisions. You are advised to read the information about Optimizing Wired
Connections prior to changing this setting for the Base Station.
To enable RTS/CTS medium reservation click the
Advanced button on the
Wireless Interfaces tab.
Interference Robustness
The Interference Robustness can be activated in exceptional cases when
troubleshooting slow performance of your network that could be related to in-
band interference from e.g. microwave ovens. Interference will usually show a
poor Signal to Noise Ratio (SNR) that is based upon a good signal level and a
high noise level. This behavior is often perceived when:
! the “trouble” station or Base Station is close to a interference source, or