Alvarion BU-DS.11 User Manual page 57

The DS.11 Configuration Utility
♦ Preferred BU (RB only) Parameters: When the Enforce option is enabled, the
RB will associate only with the BU whose MAC address is defined in the MAC
Address edit box. The default for the Enforce option is Disable. The default
Preferred BU MAC Address is 00-00-00-00-00-00 (none). If the Preferred BU
MAC Address is the default one (none), then the Enforce option has no effect
and unit will operate normally –it will either use the Best BU Selection
algorithm (if enabled), or try to associate with the first BU it finds (if the Best
BU Selection algorithm is disabled).
♦ Best BU Selection (RB only): When enabled, the RB performs a scanning cycle
measuring the strength of the signal received from all BUs it finds. If the RB
can connect to more than one BU, it will connect to the BU with the strongest
signal. The default is Disable.
♦ Bridge Aging Time (BU only): Defines the time that an RB can remain non-
active without being removed from the bridging table. If for the defined time
there was no traffic to/from the RB, it will be de-authenticated. The range is
from 10 to 1,000,000 seconds. The default value is 1800 seconds.
♦ Ethernet Broadcast/Multicast Limiter parameters: Enable to limit the
number of broadcast and/or multicast packets that can be transmitted per
second, in order to prevent the potential flooding of the wireless media by
certain ARP attacks.
When the Limiter Option is enabled and the limit is reached the unit will send
a trap. The trap will be sent periodically till the number of broadcast/multicast
packets will be less than the maximum. The trap will inform the user how
many packets were discarded in the last period.
The Ethernet Broadcast/Multicast Limiter parameters are:
Limiter Option: Defines the limiter's functionality. The available options
are:
•
•
•
•
The default selection is Disable.
Limiter Threshold (packets/sec): Defines the maximum number of
packets per second that will pass the limiter when it is enabled is enabled.
The range is from 0 to 20480 (packets/second).
The default is 20480.
Disable
Limit only Broadcasts
Limit Only Multicasts (Not Broadcasts)
Limit All Multicasts (Including Broadcasts)
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