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SNTP Client Not Synchronizing Time

Wed Mar 30, 2016 11:17 pm

I have an issue with the SNTP client not synchronizing time even though the client is enabled to the servers and to NIST. Based on some posts it was suggested that we need to remove the "Use Peer NTP" in DHCP client for this to work, but even with that removed it it is not working. Can someone help to resolve this please

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Re: SNTP Client Not Synchronizing Time

Thu Mar 31, 2016 3:30 pm


Do you have any firewall between the device and the internet?

If you do try adding a accept rule to accept port 123 udp/tcp
There you go then you touched something ;-) : it only takes a change in wind direction to screw with your nat :-)
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Re: SNTP Client Not Synchronizing Time

Thu Mar 31, 2016 4:41 pm

Another consideration is that the NTP request will originate from the IP attached to the interface the traffic is routed through. If this is a private address for example on a point to point link, it wont be able to connect out to the remote NTP site.
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Re: SNTP Client Not Synchronizing Time

Sat Jan 07, 2017 5:17 pm

Problem solved in my case.
Turn out the problem is the Router OS NTP server
NTP package as no log as stipulate
See :
NOTE: the above logging rules work only with the built-in SNTP client, the separate NTP package doesn't have any logging facilities
I turn on log in the client package instead
I receive error on debug NTP mode
Always server-not-synchronize
That message is explicit:
server-not-synchronized - Leap Indicator field is set to "alarm condition" value, which means that clock on the server has not been synchronized yet.
Turn out the RouterOS time server was not synchronize on the web.
Change the NTP client to good time server and all start to work
I fix the time on the router board itself and all works find

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