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Router 2901 as NTP Server for Windows 2003 Network

Hello. I am trying to configure a 2901 router to act as NTP server on my network.

This set "ntp master" in the router.

I have no possibility to access an NTP server on the Internet.

# show ntp Associations

   address ref clock st poll reach delay offset When NowNot

* ~ 127.127.1.1. LOCL. 7 10 16 377 0,000 0,000 0,245

  * Sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

Now I want to configure a Windows 2003 DC to update the time from the NTP Server (router 2901).

But I have some doubts:

In Windows 2003, the registry value "NtpServer" may have to be IP addresses or FQDN? (In my case I put router_ip_address, 0x1) 0x1 = use this "SpecialPollInterval" to update the time?

In the router I have this debug:

Sep 20 20:05:50.655: NTP message received from W2K3_SERVER_IP on interface 'GigabitEthernet0 / 1' (ROUTER_2901_IP).

Sep 20 20:05:50.655: NTP Core (DEBUG): ntp_receive: message received

Sep 20 20:05:50.655: NTP Core (DEBUG): ntp_receive: peer is 0x00000000, next action is 3.

Sep 20 20:05:50.655: NTP Core (DEBUG): ntp_receive: doing fast answer to client.

Sep 20 20:05:50.655: NTP message sent to W2K3_SERVER_IP, from interface 'GigabitEthernet0 / 1' (ROUTER_2901_IP).

Where you can find that these actions mean "next action is 3"??

In Event Log in Windows 2003 DC receipt Event ID 35:

The time service is now synchronizing the system time with the time source ROUTER2901_IP (ntp.m | 0x1 | W2K3_SERVER_IP: 123 -> ROUTER2901_IP: 123).

Configure "SpecialPollInterval" in 10 seconds.

But the time on the Windows Server 2003 DC continuous five minutes ahead of time compared to the 2901 router.

What am I doing wrong? or how I can check if it is working or not?

Thanks!

2 REPLIES 2
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Contributor

Re: Router 2901 as NTP Server for Windows 2003 Network

Windows. 2003 uses sntp, not ntp. Not going to work.

Sent from Cisco Technical Support iPad App

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Hall of Fame Master

Router 2901 as NTP Server for Windows 2003 Network

Windows server 2003 is supposed to support NTP:

http://technet.microsoft.com/en-us/library/cc773263(v=ws.10).aspx