What is the System Architecture of Huawei MA5600T/MA5603T/MA5608T?

Huawei MA5600T/MA5603T/MA5608T uses the system architecture containing three modules: M1, M2, and M3.

• The M1 service port module provides various service access ports, such as PON, P2P, POTS, and Huawei xDSL service ports.
• The M2 core processing module implements CPU processing, Ethernet switching, and service processing.
• The M3 uplink port module transmits service flows upstream to network-side devices.

In the preceding figure:

• The M1 service port module and M3 uplink port module connect to different boards. For details of working principles of each module, see board description in the Hardware Description.
• For details of service flow directions in the M1 service port module, see board working principles in the Hardware Description.
• The service flows processed by the M2 core processing module are classified into two types: One type of service flows are transmitted upstream after they are processed by the Ethernet switching module and the M3 uplink port module; the other type of service flows are transmitted upstream after they are processed by the Ethernet switching module, service processing module, and then Ethernet switching module again.

What Are the Functions of the HiGig Interface on the ETHB Board?

The HiGig interface provides a communication channel for two adjacent ETHB boards to implement binding of two adjacent ETHB boards. Two adjacent ETHB boards can implement load sharing and redundant protection only after they are bound together.

Because MABA, MABC.VER A, MABH.VER B, and MABV.VER B backplanes do not provide the HiGig interface, the ETHB board provides such an interface on the front panel. The HiGig interfaces of two ETHB boards are connected by using an external mini SAS high-speed cable. In this way, the two ETHB boards can communicate with each other. To set two ETHB boards to be in a protect group or to implement load sharing between two ETHB boards, connect their HiGig interfaces.

The MABC.VER B and MABH.VER C backplanes provide the HiGig interface. Therefore, two adjacent ETHB boards on Huawei MA5603T can communicate with each other through the backplane directly and they can implement binding without external mini SAS high-speed cables.