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Community Member

NTP configuration on SG200 switch

I have configured several NTP servers to pull time from, but the status always shows that the host is down.

I have confirmed with several internal servers that they can reach the NTP servers, but the switch doesn't seem to be able to pull time information from them. I am running the latest firmware ( and Boot version is Under Clock source settings, I have enabled NTP as the main clock source with PC time as the secondary time source. List of NTP servers I have attempted to use: All have poll interval set to enable. All report as server down and never have an updated date.


​Any hints as to how to get this running?

Community Member

Don,It may be worth checking


It may be worth checking your boundary/firewall to see if NTP (UPD port 123) is allowed across it.


Who is your NTP server? Is it

Who is your NTP server? Is it a Cisco router, or Windows Server?
If its a windows server d know that there are special configurations you need to do in the registry in order for Cisco to recognize it

Yeah, also check port 123/UDP if its allowed

Can you ping them? You need

Can you ping them? You need route to internet and valid reachable name servers configured before that will work. 

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