Alvarion BreezeACCESS VL 4.5 Release Release - Pagina 6
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In case data encryption is used, the maximum number of SUs that can be served by an AU is
limited to 124 (512 when data encryption is not used). Note than when data encryption is
needed, it must be used by all SUs served by the same AU, as well as by the AU itself. Please
change the number of supported SU to 124 in order to enable the encryption mode.
•
Upon downgrade from version 4.5 to version 3.0 or lower, all the information in the new
Network Management IP Address Ranges table will be lost. Hence, management access may
be lost if the unit was managed from an IP address that is on a subnet defined in the new
tables.
•
When upgrading from version 3.0 or lower to version 4.5, the high/low packet classification
settings according to the old VLAN Priority Threshold or IP Precedence Threshold parameters
will be lost. The new parameters are forced to the default value of 7, meaning no prioritization.
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When downgrading from version 4.5 to version 3.0 or lower the MIR value is changed to the
default 14976 and can manually be set to any value up to the maximum of 32896.
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When Wireless Link Prioritization feature is activated the prevention of Low Priority Traffic
Starvation is automatically disabled.
•
Remote changes of the Maximum Modulation Level in an SU while Adaptive Modulation is
disabled may lead to lose of connectivity with the unit. The recommended workaround is to
enable Adaptive Modulation, reset the unit to apply the change, and then change the
Maximum Modulation Level.
•
Adaptive Modulation may not converge to best modulation in some setups with high variance
in noise levels. In these cases better performances may be achieved with manual modulation
settings (Adaptive Modulation Disabled).
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When using the Q-in-Q feature the units can be managed by a management station behind the
AU only if the following conditions are met:
The unit can be managed only with tagged frames: VLAN ID – Management must be other
than 65535 (None).
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