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1.4.1.2
Network Processing Unit (NPU)
The Network Processing Unit is the "heart" of the BreezeMAX Base Station. The
NPU module serves as the central processing unit that manages the base
station's components and the SUs served by it. It also aggregates the traffic fro
the AU modules and transfers it to the IP Backbone through a dedicated
Gigabit/Fast Ethernet interface. The NPU main functions are:
Aggregate backbone Ethernet connectivity via a 100/1000
Base-T n
Traffic classification and conn
initiation.
Policy based data switching.
Service Level Agreements management.
Centralized agent in th
site's AUs and all registered SUs.
Base Station overall operation control, including AU diagnostic and con
PSU monitoring, AVU management and redundancy suppor
Alarms ma
external devices (future option).
Synchronization, including GPS antenna interface (fut
IF reference generation and distribution to the Base Statio
as to other collocated Base Station chassis.
An SNMP agent incorporated into the NPU enables extensiv
management of the Base Station and all its registered SUs. Out Of Ban
management is supported through a
RS-232 port supports local configuration, monitoring and debugging.
Two NPU modu
redundancy me
Master <-> Slave principle, where the slave is in passive mode and is constantly
updating all th
BreezeMAX System Manual
etwork interface.
ection establishment
e Base Station to manage all cell
nagement, including external alarm inputs and activation of
les can be used to provide a 1+1 redundancy scheme. The
chanism, to be supported in future releases, will be based on a
e learning tables and networking parameters of the master card.
ure option), clock and
dedicated 10/100 Base-T interface. A serial
Base Station Equipment
m
trol,
t.
n modules as well
e In Band (IB)
d (OOB)
9
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