Download Technical Manual-System Description

Technical Manual - System Description
U-SYS SoftX3000 SoftSwitch System
Chapter 4 OAM System
SoftX3000
S3526
To the billing center
WAN
Standby
iGWB
Active
iGWB
BAM
To the network
management center
HUB
WS
WS
WS
WS
WAN
Emergency WS
S3526: Ethernet switch of Huawei
Figure 4-1 Structure of the terminal system
The terminal system works in the client/server mode. The BAM and the iGWB function
as the server; they are connected to the SoftX3000 host and the external computer
network through the Ethernet. The WSs function as the client; they can be configured to
the maintenance console, the data management console, the alarm console, the traffic
measurement console and the bill console according to the specific requirements.
In the terminal system, the BAM is the hardware core to achieve the OAM functions.
The BAM forwards the operation and maintenance commands from the WSs to the
host and directs the response made by the host to the corresponding WS. The BAM
plays the bridge role in the communications between the WSs and the host.
For the purpose of guaranteeing the reliability of the terminal system, the following
measures are taken in SoftX3000:
1)
Dual-plane mode is employed in the Ethernet connection between the BAM/iGWB
and the host. The planes work in the active/standby way.
2)
Two iGWBs work in the active/standby way, which ensures the security of bills.
3)
An emergency workstation is designed as the online backup of the BAM.
Whenever the BAM becomes faulty, the emergency workstation can substitute the
BAM temporarily and meanwhile restore the BAM with the backup data stored on
its own hard disk.
4-4