NTP client in ntp package not working but built in client is

RouterOS General
21

what are client settings?

this is what i have set up:
/system ntp client set enabled=yes mode=unicast primary-ntp=
secondary-ntp=

22

Any updates?

I updated an RB750 used for DNS and NTP to 5.22 and lost NTP.

5.22 appeared to correct my DNS issues with UPS.com and amazon.com, but I lost NTP.

23

bump??? i am seeing issue as well?

24

hi guys
i have rb951 and have same issue . ntp client show start but
not sync time

any help ?

25

I uninstalled NTP server, downgraded to 5.14, set NTP client, then installed NTP server again, configured, reboot.

26

I got here by searching for an answer to this same problem. Thanks all for your input, I was able to get mine working.

Background info: I’m a new user of MicroTik/RouterOS. Just received my first RouterBoard, an RB2011L. During initial setup, the default SNTP client worked fine to sync to a few entries from pool.ntp.org. After doing full config of the device for my home use, which included installing and configuring the full NTP client/server, the client was no longer syncing. Just showed “started”.

My changes just now: 3 firewall additions (and moved them up above any block rules in the chain).
/ip firewall filter add chain=input action=accept connection-state=established
/ip firewall filter add chain=input action=accept connection-state=related
/ip firewall filter add chain=output action=accept protocol=udp dst-port=123

I don’t think the last one was needed, as I don’t have a block rule for chain=output. Dunno.

Now that I think about it, the first two were likely there by default, and I deleted them in my initial tinkering, before I understood how the filters worked.

27

notice that when you enter pool.ntp.org it resolves it once, and after some time you might be moved to another server and have to resolve it again.

28

Just realized same issue here with 5.8 on RB450G, can not sync the NTP

[admin@MikroTik] > /system ntp client print 
        enabled: yes
           mode: unicast
    primary-ntp: 119.252.169.31
  secondary-ntp: 202.169.224.16
  poll-interval: 16s
  active-server: 202.169.224.16

any solution on this?

29

I have the same issue on my RB750GL (firmware v5.14). I’m unable to receive a answer from the NTP server’s I specified (yes, I tried a lot).

30

Hi all

When I wrote my first post and dind’t get theNTP to work, i had a switch in between my RB750 and my ISP.
While working a bit on that switch, I wrote that the NTP client started to work.
I later on had to take back my statement as it stopped working.

A couple of Days ago, I made some changes to my network setup and my router RB750 is now
connected directly to my ISP, without the switch, and now it works like a charm.

I really wonder what is happening here and if it is possible that switch can fool the NTP Communication in any way.

31

Hi Team,
Am glad to be here.
I also had an issue with my NTP client not working. I discovered the problem was that my firewall wasn’t
allowing output to WAN. Once i enabled it, my NTP client synchonized immediately.
Hth

32

Make sure you allow UDP traffic in port 123 coming from your NTP servers.

33

i went to IP>Firewall>Service Ports but it is disabled for me to add more ports!? Why? or is that not where we adjust this?

34

Unfortunately this issue is still present. I have numerous routers deployed in the field with identical configurations. Some of them are stuck in the "started’ state but never reach synchronized even though the servers can be pinged. Disabling / Re-enabling does not help the issue. I suspect the only thing that will help is a reboot.

It looks like the service has simply crashed.

If I untick enabled and click apply it still shows started.

If I do the same on another router that is working, it immediately changes to “using local clock”.

I will be uploading a supout.rif from the crashed device.

Confirmed: After rebooting the device it went to synchronized without issue.

35

SAME OVER HERE.

I have two identical router 3011UiAS bought at same day from same seller.

Both have the same values:
Factory Firmware: 3.35
Current Firmware: 3.35
Upgrade Firmware: 3.27
Webfig: v6.35.3 (stable)

Whatever. Both router should behave the same way for NTP.

I have a third one, a small 750G r3. (3.35)

One of those 3011UiAS is doing NTP.
One is not doing!
And the third one, not exactly the same, is doing it fine again.

What is the matter about this?
This 2nd identical router anyways did some strange things in past.
After a firewall rule was set and working for about one hour (without any safemode activated and be locked out of course) suddenly the line was broken.
Router was answering with ICMP but no other port was open.
Back on a LAN port I saw the firewall. Some ports added were still in - some not?

I guess there is maybe a problem and a lot of people will see it while trying to use NTP? No idea, but NTP is not working once and once it is.
No other setup or rules are made except some basic firewall input for TCP 80 and 8291, GRE and 443.
But everything is same - even the order of any rule.

NTP or DEVICE?

36

If you stop the ntp client does it still say started? If so the service has crashed and you will have to reboot (send a supout to mikrotik about it before you reboot). If it correctly switches back to “using local clock” it means that the service is still okay.

37

Hi all,
I found this thread by searching for why the NTP client on my RB2011 is not working.
Found out that closing all ports to WAN was the cause of it.
So open port 123 (UDP) again solved this.