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S12700 V200R010C00 Configuration Guide - Device Management

This document describes the principles and configurations of the Device Management features, and provides configuration examples of these features.
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Setting the ID of a Clock Source

Setting the ID of a Clock Source

Context

If the clock signals sent from a clock source are looped back to the sender directly or through the network, it indicates that a timing loop occurs. Timing loops should be avoided in network design. In extended SSM mode, the higher four bits of the S1 bytes are used to transmit the clock source ID, which reduces timing loops on the network.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    clock id id source source

    The ID of a clock source is set.

    The default ID of a clock source is 0.

  3. (Optional) Run:

    clock no-id-out { bits0 | bits1 }

    The BITS0 or BITS1 interface is disabled from sending the ID of the clock source.

  4. (Optional) Run:

    interface interface-type interface-number

    The interface view is displayed.

  5. (Optional) Run:

    clock no-id-out

    The interface is disabled from sending the ID of the clock source.

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Updated: 2019-08-21

Document ID: EDOC1000142080

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