Specifications

Chapter 4 - Operation and Administration Menus and Parameters
BreezeACCESS 4900 177 System Manual
The default Filter IP Address Range is 0.0.0.0 TO 0.0.0.0 (all 8 ranges).
A range can be defined using a string that includes either a start and end address,
in the format "<start address> to <end address>" (example: 192.168.1.1 to
192.168.1.255), or a base address and a mask, in the format "<base address>
mask <mask>" (example: 192.168.1.1 mask 255.255.255.0).
4.2.6.6.1.3 Delete Filter IP Address Range
The Delete Filter IP Address Range option enables deleting IP address range
entries from the Filter IP Address Ranges list.
4.2.6.6.1.4 Delete All User Filtering Entries
The Delete All User Filtering Entries option enables deleting all entries from the
Filter IP Address Ranges list.
4.2.6.6.1.5 DHCP Unicast Override Filter
When user filtering is activated, unicast DHCP messages are filtered out; therefore
the unit cannot communicate with the DHCP server. The DHCP Unicast Override
Filter option enables to overcome this problem. When enabled, unicast DHCP
messages pass, overriding the user filtering mechanism.
The default is Disable DHCP Unicast.
4.2.6.6.1.6 Show User Filtering Parameters
The Show All User Filtering Parameters option displays the current value of the
User Filtering Option and the list of User Filtering addresses, subnet masks and
ranges.
4.2.6.6.2 MIR and CIR Parameters
The CIR (Committed Information Rate) specifies the minimum data rate
guaranteed to the relevant subscriber. The MIR (Maximum Information Rate)
value specifies the maximum data rate available for burst transmissions, provided
such bandwidth is available.
Under normal conditions, the actual Information Rate (IR) is between the
applicable CIR and MIR values, based on the formula IR=CIR+K(MIR - CIR).
In this formula K is between 0 and 1 and is determined dynamically by the AU
according to overall demand in the cell and the prevailing conditions that
influence the performance of the wireless link. In some situations the minimum
rate (CIR) cannot be provided. This may result from high demand and poor
wireless link conditions and/or high demand in over-subscribed cells. When this
occurs, the actual information rate is lower than the CIR, and IR = (1+K)*CIR,
where K < 0. The K value to be used in the cell is advertised by the AU in every
beacon, and it is changed every second based on comparison of the traffic during
the last one second interval with the traffic during the previous one second