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Oh... net time /DOMAIN:DOMAIN /SET from a workstation works fine for using the DC as an NTP server.
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Oh... net time /DOMAIN:DOMAIN /SET from a workstation works fine for using the DC as an NTP server.

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Looks like it just took some time for it to actually sync.
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Looks like it just took some time for it to actually sync.

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<div class="content wysiwyg-content">
I have several Cisco 2960's I'm trying to setup NTP on.<br />
<br />
I've configured my DC running Windows 2008 R2 to be an NTP client and server as described in this article: <a href="http://support.microsoft.com/kb/816042" rel="ugc">http://support.microsoft.com/kb/816042</a>.<br />
<br />
On the switch I've configured them with &quot;ntp server 192.168.10.20&quot; which is the IP address of the DC. &nbsp;Show NTP Associates shows:<br />
<br />
&nbsp; &nbsp; &nbsp; address &nbsp; &nbsp; &nbsp; &nbsp; ref clock &nbsp; &nbsp; st &nbsp;when &nbsp;poll reach &nbsp;delay &nbsp;offset &nbsp; &nbsp;disp<br />
&nbsp;~192.168.10.20 &nbsp; &nbsp;207.46.232.182 &nbsp; &nbsp;4 &nbsp; 224 &nbsp;1024 &nbsp;377 &nbsp; &nbsp; 1.3 &nbsp;172164 &nbsp;15875.<br />
&nbsp;* master (synced), # master (unsynced), + selected, - candidate, ~ configured<br />
<br />
I believe this is showing it's configured, but is not synced. &nbsp;I know the times are different, they are however within a few minutes of each other.<br />
<br />
Ideas?<br />
<br />
<br />
<br />
<br />

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I have several Cisco 2960's I'm trying to setup NTP on.

I've configured my DC running Windows 2008 R2 to be an NTP client and server as described in this article: http://support.microsoft.com/kb/816042.

On the switch I've configured them with "ntp server 192.168.10.20" which is the IP address of the DC.  Show NTP Associates shows:

      address         ref clock     st  when  poll reach  delay  offset    disp
 ~192.168.10.20    207.46.232.182    4   224  1024  377     1.3  172164  15875.
 * master (synced), # master (unsynced), + selected, - candidate, ~ configured

I believe this is showing it's configured, but is not synced.  I know the times are different, they are however within a few minutes of each other.

Ideas?






NTP on Cisco Switch &amp; Windows 2008 R2

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

NTP on Cisco Switch &amp; Windows 2008 R2

NTP on Cisco Switch & Windows 2008 R2