Functions of the clock view

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The clock view is a visualized platform that supports the following functions: setting clocks for NEs, querying the network-wide clock synchronization status, tracing and searching for clocks, and supporting synchronous Ethernet clocks, IEEE 1588v2 clocks, and SDH clocks.

Other related questions:
Functions of the clock module on a system control board
The clock module on a system control board processes only the clock signals sent from an OSC board. When ESC is used, an STG board is used to process the clock signals. The STG board extracts the line clock signals on optical ports of service boards. Optical signals are at a specific frequency. After the optical module converts an optical signal into an electrical signal, the CDR restores the clock (high frequency) and data of the signal. The low frequency (about 8 kHz) derived by frequency dividing on the clock frequency, is the line clock.

Physical-layer clock synchronization
Physical-layer clock synchronization is a method of recovering clock frequencies from physical signals. The purpose is to achieve frequency synchronization between upstream and downstream devices so that services are transmitted properly. When an OTN network transmits clock synchronization signals, these signals can be obtained by SDH and PTN networks. No separate BITS clock source needs to be provided for the SDH or PTN network. In this way, network-wide clock synchronization is achieved.

Difference between the external 2M clock schemes for OSN 8800 and OSN 6800 devices
For OSN 8800, clock signals and frame headers do not need to pass the cross-connect board but the status signals are bound. In addition, the STG board on OSN 8800 must work with the cross-connect board. On OSN 6800, clock signals and frame headers do not need to pass the cross-connect board. Active/Standby switching is implemented for cross-connect boards and STG boards in an associated way.

Does the clock work properly after an S series fixed switch is powered off
If some models and versions of S series fixed switches (except S1700 switches) are powered off, the clock can recover. For some other models and versions, the clock cannot recover. For details, see the following: - For switches running a version earlier than V100R006: The system clock of a switch is implemented by the software. The system saves the system clock if the switch is powered off and restarted manually. If the switch is powered off due to a power failure, the system time is restored to the factory setting. - For switches running V100R006 or V200R001: The system clock of the S3700HI, S5700HI, or S6700 is implemented by the hardware. The system obtains the clock from the hardware if the switch is powered off and restarted manually. System clocks of other models are implemented by the software. The system saves the system clock if a switch is powered off and restarted manually. If the switch is powered off due to a power failure, the system time is restored to the factory setting. - For switches running V200R002 and V200R003: The system clock of the S5700HI or S6700 is implemented by the hardware. The system obtains the clock from the hardware if the switch is powered off and restarted manually. System clocks of other models are implemented by the software. The system saves the system clock if the switch is powered off and restarted manually. If the switch is powered off due to a power failure, the system time is restored to the factory setting. - For switches running V200R005 or a later version: The system clock of the S5700 or S6700 is implemented by the hardware. The system obtains the clock from the hardware if the switch is powered off and restarted manually. System clocks of other models are implemented by the software. The system saves the system clock if a switch is powered off and restarted manually. If the switch is powered off due to a power failure, the system time is restored to the factory setting.

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