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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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CLOCK/4/FREQ_OFFSET:The clock source [STRING] is selected as [STRING], and its frequency has offset. (LastPPM=[STRING], CurPPM=[STRING])


The offset of current clock source exceeds 1 ppm.


Parameter Name Parameter Meaning


Indicates the type of the clock source:
  • 0) Inner Clock: internal clock.
  • 1) BITS0: BITS0 clock.
  • 2) BITS1: BITS1 clock.
  • 3) Peer Board BITS0: BITS0 interface of the peer board.
  • 4) Peer Board BITS1: BITS1 interface of the peer board.
  • 5) Left Frame Clock: clock of the left frame.
  • 6) Right Frame Clock: clock of the right frame.
  • 7) FSU: flexible service unit.
  • 8) Peer Board FSU: flexible service unit of the peer board.
  • 9) System Clock: system clock.
  • 10) Peer System Clock: system clock of the peer board.


Indicates the type of the clock source:
  • 0) system: internal clock
  • 1) bits0: BITS0
  • 2) bits1: BITS1


Indicates the last frequency offset.


Indicates the current frequency offset.

Possible Causes

The performance of the traced clock source degrades.


  • If the clock source is switched, this is a normal situation.
  • If the clock source of the upstream device is switched, this is a normal situation.
  • Run the display clock { bits0 | bits1 } command to view the BITS interface configuration. Check whether the clock configurations of upstream and downstream devices are correct, for example, whether bit/hz in the output mode of the upstream device is the same as that in the input mode of the local device.
  • Check the frequent offset of the upstream clock source. The tool may be required.
  • After the clock source is switched, if the log is generated on all interfaces of the local device, the local clock board may be faulty. Then perform an active/standby switchover on the clock boards.
  • Record this log message and contact technical support personnel.
Updated: 2019-08-21

Document ID: EDOC1000142069

Views: 549328

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