Functions

The LST7MPUE0000 provides the control plane and management plane for the entire system.

• The control plane provides functions such as protocol processing, service processing, route calculation, forwarding control, service scheduling, traffic statistics collection, and system security.
• The management plane is responsible for system status monitoring, environment monitoring, log and alarm processing, system software loading, and system upgrades.

The LST7MPUE0000 consists of the following functional modules:

• Control module: functions as the control and management plane for the LST7MPUE0000 and the entire system, implementing protocol processing, route calculation, forwarding control, system management, and system security.
• Local clock module: provides the working clock for the chips of the control module, and device management and monitoring module on the LST7MPUE0000.
• Device management and monitoring module: provides functions of a controller area network (CAN) bus module to monitor the LST7MPUE0000 and manage the CAN bus modules of LPUs.
• Power supply module: provides power supply for the LST7MPUE0000.
• Value-added service module: provides enhanced services such as operation, administration and maintenance (OAM) and bidirectional forwarding detection (BFD)
• Functions of the LST7MPUE0000

• Function	Description
  Basic functions	The LST7MPUE0000 is the system control and management unit for the S12700E-4, S12700E-8, and S12700E-12. It integrates the main control unit, clock unit, and system maintenance unit.
  OAM	The LST7MPUE0000 supports the following OAM functions: 802.1ag: identifies, detects, and sends continuity check (CC) packets. Multiprotocol Label Switching (MPLS OAM): identifies, detects, and sends MPLS OAM packets. OAM UNCFG_MEP.
  Memory	16 GB
  NAND Flash	2 GB The system configuration data, startup files, system software package, and system logs are saved in the NAND Flash by default.
  Redundancy backup	1+1 hot standby Main control board is mandatory for switches. Each switch must be configured with one or two main control boards. When one main control board is configured for a switch, the main control board can be installed in either main control board slot of the switch. When two main control boards are configured, the two main control boards work in hot standby mode to improve reliability of the switch. The active and standby main control boards monitor the status of each other. If the active main control board fails, the standby main control board automatically becomes active to ensure uninterrupted services.
  Hot swapping	Supported Before removing the active card, perform an active/standby switchover.