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Bring performance and reliability to your network with the Aruba Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of the ArubaOS-Switch and ArubaOS-CX devices, and find ways to improve security across your network to bring together a mobile first solution.
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NTP IN 3810M

This thread has been viewed 32 times
  • 1.  NTP IN 3810M

    Posted Dec 07, 2021 12:54 AM
    Any  one done NTP

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    chandan kp
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  • 2.  RE: NTP IN 3810M

    EMPLOYEE
    Posted Dec 07, 2021 02:17 AM
    Hello chandan.kp,

    What is the problem you are facing with NTP? Following is the guide for setting it up you may use NTP and SNTP starting from page 24:

    Document - 16.10 Aruba 3810 / 5400R Management and Configuration Guide for ArubaOS-Switch 16.10 | HPE Support

    Hope this helps!

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    -Alex-
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  • 3.  RE: NTP IN 3810M

    Posted Dec 07, 2021 02:27 AM
    Hi  

    I configured ntp in Aruba switch   the  ntp status is  Synchronized  but not showing correct time?




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    chandan kp
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  • 4.  RE: NTP IN 3810M

    EMPLOYEE
    Posted Dec 07, 2021 02:54 AM
    Hello chandan.kp,

    What is the time which is the timezone and what is not correct?


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    -Alex-
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  • 5.  RE: NTP IN 3810M

    MVP GURU
    Posted Dec 07, 2021 02:59 AM
    Hello Chandan, can you show us the output of show time and show ntp status executed one after the other?

    Something like:

    SW# show time
    Tue Dec 7 08:54:08 2021

    SW# show ntp status

    NTP Status Information

    NTP Status : Enabled NTP Mode : Unicast
    Synchronization Status : Synchronized Peer Dispersion : 0.00000 sec
    Stratum Number : 3 Leap Direction : 0
    Reference Assoc ID : 0 Clock Offset : 0.28818 sec
    Reference ID : x.y.w.z Root Delay : 0.02923 sec
    Precision : 2**-18 Root Dispersion : 0.98162 sec
    NTP Up Time : 297d 14h 2m Time Resolution : 419 nsec
    Drift : 0.00051 sec/sec

    System Time : Tue Dec 7 08:54:13 2021
    Reference Time : Tue Dec 7 05:21:29 2021



    ------------------------------
    Davide Poletto
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  • 6.  RE: NTP IN 3810M

    Posted Dec 08, 2021 12:17 AM
    HI Please find the  output,


    Distribution1(config)# show time
    Wed Dec 8 05:12:23 2021
    Distribution1(config)# show ntp status

    NTP Status Information

    NTP Status : Enabled NTP Mode : Unicast
    Synchronization Status : Not Synced Peer Dispersion : 0.00000 sec
    Stratum Number : 16 Leap Direction : 0
    Reference Assoc ID : 0 Clock Offset : 0.00000 sec
    Reference ID : 0.0.0.0 Root Delay : 0.00000 sec
    Precision : 2**-18 Root Dispersion : 0.01705 sec
    NTP Up Time : 0d 0h 18m Time Resolution : 420 nsec
    Drift : 0.00000 sec/sec

    System Time : Wed Dec 8 05:12:30 2021
    Reference Time : Mon Jan 1 05:30:00 1990

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    chandan kp
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  • 7.  RE: NTP IN 3810M

    EMPLOYEE
    Posted Dec 10, 2021 09:20 AM
    This last one shows an unsynced NTP server. What's the configuration you have?

    This is my configuration:
    timesync ntp
    ntp unicast
    ntp server 192.168.2.1 iburst
    ntp server 192.168.4.2
    ntp enable​

    If you have a similar configuration, can you sent the output of 'show ntp associations detail'? Also, after you changed the configuration, wait for 20-30 minutes for NTP to sync. The server marked with iburst will be used initially to make a step and get fast synchronization.



    ------------------------------
    Herman Robers
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    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
    ------------------------------



  • 8.  RE: NTP IN 3810M

    EMPLOYEE
    Posted Dec 13, 2021 03:34 AM
    Hello chandan.kp,

    Did you sync successfully with NTP it was showing as sync first time then not sync in the second output?
    You may try another NTP server.

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    -Alex-
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  • 9.  RE: NTP IN 3810M

    Posted Dec 18, 2021 05:44 AM
    This is my standard ProCurve/AOSS config:
    timesync ntp
    ntp unicast
    ntp server 216.239.35.4 iburst
    ntp server 216.239.35.8 iburst
    ntp server 216.239.35.12 iburst
    ntp enable
    time daylight-time-rule user-defined begin-date 10/01 end-date 04/01
    time timezone 600​


    Change your timezone as appropriate: 600 = 60min x 10hours (for Sydney Australia which is +1000)
    My user-defined dates are set to start on the first Sunday of October and end first Sunday of April.



    ------------------------------
    Richard Litchfield
    Airheads MVP 2020, 2021
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