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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
The Clock is not Synchronized

The Clock is not Synchronized

Common Causes

This fault is commonly caused by one of the following:

  • The link flaps.

  • The link is faulty.

Troubleshooting Procedure

Context

NOTE:

Save the results of each troubleshooting step. If your troubleshooting fails to correct the fault, you will have a record of your actions to provide contact technical support personnel.

Procedure

  1. Check the NTP status.

    [Huawei] display ntp-service status
     clock status: unsynchronized
     clock stratum: 16 
     reference clock ID: none
     nominal frequency: 100.0000 Hz 
     actual frequency: 99.9995 Hz 
     clock precision: 2^18
     clock offset: 0.0000 ms 
     root delay: 0.00 ms 
     root dispersion: 0.00 ms 
     peer dispersion: 0.00 ms 
     reference time: 14:25:55.477 UTC Jun 9 2014(CFBA22F3.7A4B76F6)

    The "clock status" field is displayed as "unsynchronized", indicating that the local system clock is not synchronized with any NTP server or a reference clock.

  2. Check the status of the NTP connection.

    [Huawei] display ntp-service sessions

    The value of the "reference" is 0.0.0.0, specifying that the local system clock is not synchronized with any NTP server.

  3. Run the ping command on the NTP client to check the status of the link to the NTP server.

    [Huawei] ping 10.1.14.1
      PING 10.1.14.1: 56  data bytes, press CTRL_C to break
        Request time out
        Request time out
        Request time out
        Request time out
        Request time out
    
    
      --- 10.1.14.1 ping statistics ---
        5 packet(s) transmitted
        0 packet(s) received
        100.00% packet loss
    • The displayed information "100.00% packetloss" indicates that the link is faulty. To locate the fault, refer to The Ping Operation Fails.

    • If the packet loss percentage is not 100.00%, the link flaps. To locate the fault, refer to The Ping Operation Fails.

    • If the packet loss percentage is 0.00%, the link is normal. Then proceed to step 4.

  4. If the fault persists, collect the following information and contact technical support personnel:

    • Results of the preceding troubleshooting procedures
    • Configuration files, log files, and alarm files of the devices

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Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 443770

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