Alvarion Technologies Ltd. BMAX-BA36 Manuale Utente

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Base Station Equipment
BreezeMAX Modular Base Station System Manual 
7
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Aggregate backbone Ethernet connectivity via a 100/1000 Base-T network 
interface.
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Traffic classification and connection establishment initiation.
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Policy based data switching.
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Service Level Agreements management.
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RADIUS NAS, enabling centralized SUs’ authentication and 
services authorization by RADIUS server(s).
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Centralized agent in the Base Station to manage all cell site's 
AUs and all registered SUs.
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Base Station overall operation control, including AU diagnostic and control, 
PSU monitoring, AVU management and redundancy support.
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Alarms management, including external alarm inputs and activation of 
external devices (future option).
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Synchronization, including GPS antenna interface, clock and IF reference 
generation and distribution to the Base Station modules as well as to other 
collocated Base Station chassis (future option).
An SNMP agent incorporated into the NPU enables extensive In Band (IB) 
management of the Base Station and all its registered SUs. Out Of Band (OOB) 
management is supported through a dedicated 10/100 Base-T interface. A serial 
RS-232 port supports local configuration, monitoring and debugging.
Two NPU modules can be used to provide a 1+1 redundancy scheme. The 
redundancy mechanism, to be supported in future releases, will be based on a 
Master <-> Slave principle, where the slave is in passive mode and is constantly 
updating all the learning tables and networking parameters of the master card.
1.2.3
Access Unit (AU-IDU)
The double Euro AU-IDU module contains the WiMAX-ready MAC and modem 
and is responsible for the wireless network connection establishment and for 
bandwidth management. Each AU-IDU connects to the NPU via the back plane. In 
addition, each AU-IDU connects to all other AU slots via the back plane over a 
shared bus.