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NTP Error

  • 1.  NTP Error

    Posted 12-29-2020 03:53

    Hi, from my mx80 (bras role, 18.4R2-S3 ) i often get followed error :

    Dec 29 10:57:39 BRS-JN-1 (FPC Slot 0, PIC Slot 2) ms02 xntpd: NTP Server 128.0.0.1 is Unreachable

    FPC 0, PIC 2 its ms-mic-16g nat sercice card.

    ntp works correct

    What is this ? thank you



  • 2.  RE: NTP Error

     
    Posted 12-29-2020 04:41

    Hello,

    I'd advise checking if any interface stuck in OVERLOAD STATE, from the output of " show services service-sets summary" 

    Otherwise, it seems that some NTP associations are not established correctly and you need to restart the NTP daemon or MS card to resolve the issue.



  • 3.  RE: NTP Error

    Posted 12-29-2020 09:08

    1. 

    its all right

    2. What is 128.0.0.1 ? My ntp not it




  • 4.  RE: NTP Error

     
    Posted 12-29-2020 11:28

    128.0.0.1 is an internal IP address.  (do a show route all and you will see it) 

    Also, take a look at this document: https://kb.juniper.net/InfoCenter/index?page=content&id=KB11436

    You might need to configure 127.0.0.1/32 under the loopback interface or, if you have a firewall filter applied to the loopback, configure it to accept NTP traffic with SA = DA = your router's loopback interface. 

    Regards,  



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    Juniper Ambassador
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  • 5.  RE: NTP Error

    Posted 12-29-2020 22:41

    No, my ntp works correct, loopback, loopback filter etc, all correct, ntp synchronized. But what about 128.0.0.1? Its martian address and its not in my config,  and why I have get its message from fpc 0 pic 2, actually its my cgnat service card




  • 6.  RE: NTP Error

     
    Posted 12-29-2020 23:24

    As I said the 128.0.0.1 is an internal IP address. You don't configure that. Those addresses are used internally for the router components to communicate. 


    ylara@R1> show route 128/8 all

    __juniper_private1__.inet.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)
    + = Active Route, - = Last Active, * = Both

    128.0.0.1/32     *[Direct/0] 2d 04:37:39
                                         > via lo0.16385
    128.0.0.4/32     *[Direct/0] 2d 04:37:39
                                         > via lo0.16385
    128.0.0.6/32     *[Local/0] 2d 04:37:39
                                         Local via sp-0/0/0.16383
    128.0.1.16/32  *[Direct/0] 2d 04:37:39
                                         > via lo0.16385
                                        [Direct/0] 2d 04:37:39
                                         > via sp-0/0/0.16383

    I don't know about the log message. I would open a case with JTAC to find out. 

    Regards, 



    ------------------------------
    Yasmin Lara
    Juniper Ambassador
    JNCIE-SP, JNCIE-ENT, JNCIE-DC, JNCIE-SEC
    JNCDS-DC, JNCIA-DevOps, JNCIP-CLOUD, CCNP-ENT
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