[c-nsp] OT: NTP windows servers

[Matthew Huff]

Actually, until recently, most Cisco ntp implementations resolved at configuration time and only stored the ip addresses. Even some recent code has issues like ntp coming up before DNS client so it fails with names rather than ip addresses.



> On Mar 26, 2015, at 5:46 PM, Gert Doering <gert at greenie.muc.de> wrote:
> 
> Hi,
> 
>> On Thu, Mar 26, 2015 at 11:20:19AM -0400, Chuck Church wrote:
>> What was the TTL of the DNS entry?  I'm assuming windows DNS respects TTLs
>> and re-polls when it expires?
> 
> NTP implementations all tend to "resolve at start, and never again".
> 
> Cisco does it that way, standard unix ntpd does, ...
> 
> gert
> 
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>                                                           //www.muc.de/~gert/
> Gert Doering - Munich, Germany                             gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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