Sync issue from Windows server 2008R2 PDC to Cisco 4500
I'd like to point my 2008 DC's to our core switches for NTP, but we're getting errors. The servers are sending and receiving NTP traffic successfully from the Cisco 4500's, yet they won't accept the time setting.
My initial guess has to do with the servers not recognizing the 4500's as authoritative, but wanted to get some clarity.
I don't think that's available on the 4500 platform. It has to do with the accuracy of the clock in the supervisors (i.e. it's ability not to drift over time once set to a certain level). If you get time from an external source, you are generally limited to being one stratum level less precise than your source
On a 6500, we have the command available:
CORE_01(config)#ntp master ? <1-15> Stratum number <cr>
Thanks for the help Marvin! Looks like the issue we were having was due to a Windows domain GPO that was forcing too tight of restrictions on our DC's NTP requirements. Corrected that this morning, and all is well.
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