UFC760BE143 3BHE004573R0143 INTERFACE BOARD ABB

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Essential details：UFC760BE143 3BHE004573R0143 INTERFACE BOARD ABB

To facilitate the understanding of the internal functional modules of network devices, the S12700E-8 is used as an example to explain the architecture of a typical network device.

Main Processing Unit (MPUs) : The main processing unit (MPUs) is the control plane of the entire system.
Switch Fabric Unit (SFU) : is responsible for the data plane of the entire system. The data plane provides high-speed non-blocking data channels to implement service switching between service modules.
Interface board (LPU) : A Line Processing Unit (LPU) is a module used to forward data on a physical device. It provides optical and electrical interfaces at different rates.
Each switch network board and interface board has its own management chip, which together with the main control board forms the control and management plane of the entire device

The main control board provides the control plane and management plane for the entire system.

The control plane implements protocol processing, service processing, route calculation, forwarding control, service scheduling, traffic statistics, and system security.
The management plane monitors system running status, monitors the environment, processes logs and alarms, loads the system, and upgrades the system.

UFC760BE43 3BHE004573R0043

For example, a switch can be divided into the following three planes (For details, see [RFC7426]) :

Switch forwarding plane: The forwarding plane provides high-speed non-blocking data channels and implements service switching between service modules. The basic task of a switch is to process and forward various types of data on different ports of the switch. Specific data processing and forwarding processes such as L2/L3/ACL/QoS/ multicast/security protection all belong to the tasks of the switch forwarding plane.
Switch control plane: The control plane performs protocol processing, service processing, route calculation, forwarding control, service scheduling, traffic statistics, and system security. The control plane of a switch controls and manages the running of all network protocols. The control plane provides various network information and forwarding query entries required by the data plane before data processing and forwarding.
Switch management plane: The management plane monitors the system running status, monitors the environment, processes logs and alarms, loads the system, and upgrades the system. The management plane of the switch enables network administrators to manage devices using TELNET, WEB, Secure Shell (SSH), SNMP, and RMON, and supports, understands, and executes commands for setting various network protocols for network devices. On the management plane, parameters related to various protocols on the control plane must be configured in advance and the management plane can be intervened when necessary.
In the implementation of Huawei products, some products combine functions into the data plane, management plane, and monitoring plane.

Control plane

The control plane of the device consists of the main control board and the management unit of the interface board.
The control and management plane is the central nervous system of the whole system. The control plane implements protocol processing, service processing, route calculation, forwarding control, service scheduling, traffic statistics, and system security. The control plane of a switch controls and manages the running of all network protocols. The control plane provides various network information and forwarding query entries required by the data plane before data processing and forwarding.

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