Usage of CLK ports on the MPU of S series switches


The CLK1 and CLK2 ports on the MPU correspond to the BITS0 and BITS1 ports on the clock card. BITS ports are connected to BITS devices or connected to BITS ports of other products to synchronize the time and clock.

Other related questions:
Work mode of active and standby MPUs on S series switches
MPU is a mandatory card for switches. Each switch must be configured with one or two MPUs. When only one MPU is configured for a switch, the MPU can be installed in either MPU slot of the switch. When two MPUs are configured, they work in hot standby mode to improve system reliability. The two MPUs monitor each other. If the active MPU fails, the standby MPU changes to active state to ensure non-stop services.

Status of MPUs on S series switches
You can run the display device command on an S series switch to check the running status of a card.

MPU types on S series modular switches
Different S series switches have different MPUs: S9303: LE0MMCUA and LE0DMCUA S9306&S9312: LE0MSRUA, LE0DSRUA, LE0D00SRUB00, LE1D2SRUE000, and LE1D2SRUH000 S9310: LE1D2SRUKC00 S7703: ES0D00MCUA00 and ES1D2MCUAC00 S7706&S7712: ES0D00SRUA00, ES1D2SRUAC00, ES0D00SRUB00, ES1D2SRUE000, and ES1D2SRUH000 S9703: EH1D2MCUAC00 S9706&S9712: EH1D2SRUDC00, EH1D2SRUC000, and EH1D2SRUDC01 S12704&S12708&S12712: ET1D2MPUA000 S12710: ET1D2MPUBC00

Can services be run on ports of the MPU on S series switches
Ports on the MPU cannot be used as service ports.

View CPU usage and memory usage on s series switch
For S series switches except S1700 switches, you can run commands to display CPU and memory usage. - display cpu-usage [ slave | slot slot-id ]: displays CPU usage statistics. - display cpu-usage configuration [ slave | slot slot-id ]: displays CPU usage configuration. - display memory-usage [ slave | slot slot-id ]: displays memory usage statistics. - display memory-usage threshold [ slot slot-id ]: displays the alarm threshold for memory usage. For S series switches and E series switches except S1700 switches, you can check CPU and memory usage through the related MIB OIDs. - hwEntityCpuUsage provides CPU usage. - hwEntityCpuUsageThreshold provides the alarm threshold for CPU usage. - hwEntityMemUsage provides memory usage. - hwEntityMemUsageThreshold provides the alarm threshold for memory usage.

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