H801SCUV Board
The H801SCUV board is a super control unit board. It is the core of the system control and service switching and aggregation. The H801SCUV board can also function as the management and control core of the integrated network management system (NMS). It communicates with service boards about the key management and control information through the master/slave serial port and inband 10GE/20GE channel. In this manner, the H801SCUV board configures, manages, and controls the device, and also implements the simple route protocol functions.
Feature and Specifications
SCU Boards Comparison
All SCU boards support the functions as below:
System control and management unit
Active/standby switchover
Local and remote maintenance through maintenance serial port CON or maintenance Ethernet port ETH
Environmental monitoring through environment monitoring serial port ESC
In the table, "Yes" indicates "supported" and "No" indicates "not supported".
Table 1 Major differences between SCU boards
Board | Access Service | Daughter Board | Load sharing | Ethernet synchronization | Temperature querying and high temperature alarming | Built-in 2GB CF card | Centric Management for GE Remote Extended Subracks | D-CMTS |
H801SCUV | Optical | No | Yes | Yes | Yes | Yes | No | Yes |
| | | | | | | | | | | | | | | |
NOTE:
H801SCUN and H802SCUN are slot compatible.
Table 2 Ports of SCU boards
Board | Panel ports | Internal interfaces |
Channel to the service board | Channel to the GIU board | Channel to the standby control board | Note |
H801SCUV | 4 GE/10GE ports, Supporting automatic switching for remote software commissioning using GE upstream transmission. | 16 10GE/20GE channels | Providing two 10GE channels for each upstream boards | Providing two 20GE channels for load sharing with the standby H801SCUV board | - |
Parameters
Power Consumption and Maximum Frame Size of Boards
You can query power consumption, maximum frame size, and normal operating temperature of all boards.
lists the power consumption and maximum frame size of boards. "-" indicates N/A.
The operating temperature of all the boards is -40°C to +65°C. The lowest board startup temperature is -25°C.
NOTE:
The power consumption of the board is tested in the following conditions:
Working voltage: -53.5 V DC.
Ambient temperature: 25 °C.
Working Principle
Figure 1 Working principle of the H801SCUV board The basic working principle of the H801SCUV board is as follows:
The control module manages the entire board and the service boards, and communicates with the fan tray through the extended serial port. In addition, the control module can be configured with a built-in CF card to expand its storage space.
The logic module implements the logic control and stratum-3 clock functions.
The power module supplies power to other functional modules of the board.
The clock module provides clock signals for other functional modules of the board.
The switching module provides the 10GE port and the 20GE port to switch and aggregate services at Layer 2 or Layer 3.
Providing four 10GE ports for upstream transmission using ports on the front panel
Providing two 10GE ports for each upstream boards in upstream transmission
Providing 16 10GE/20GE ports for implementing 10GE/20GE switching on each service board
Providing two 20GE ports for load sharing with the standby control board
