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ME60 Troubleshooting Guide V2.0 (VRPv8)

This document provides the maintenance guide of the device, including daily maintenance, emergence maintenance, and typical troubleshooting.

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NTP Troubleshooting

NTP Troubleshooting

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 Flowchart

Figure 4-11 Clock not synchronized troubleshooting flowchart

Troubleshooting 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 2010(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
     clock source:
     clock stratum: 8
     clock status: configured, master, sane, valid
     reference clock ID: LOCAL(0)
     reach: 255
     current poll: 1024
     now: 355
     offset: 0.5995 ms
     delay: 3.01 ms
     disper: 25.42 ms

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

    [~HUAWEI] ping
      PING 56  data bytes, press CTRL_C to break
        Request time out
        Request time out
        Request time out
        Request time out
        Request time out
      --- 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%, it indicates that the link flaps.

    • If the packet loss percentage is 0.00%, it indicates that the link is normal. You need to contact Huawei technical support personnel to check whether packets can be sent and received normally.

  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

Updated: 2019-11-20

Document ID: EDOC1000175918

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