RE: [Fed-Talk] What do you use for Time Service?
RE: [Fed-Talk] What do you use for Time Service?
- Subject: RE: [Fed-Talk] What do you use for Time Service?
- From: "Thornton, Neill R. CIV" <email@hidden>
- Date: Wed, 6 May 2009 06:53:14 -0700
- Acceptlanguage: en-US
- Thread-topic: [Fed-Talk] What do you use for Time Service?
This is what we do. 2 Symmetricom XLi units provide Stratum 1 time to an internal server, but if they go down for whatever reason then the server is configured to fall back to the Naval Observatory's internal Navy NTP server. This gives us 3 layers of redundancy. We monitor the GPS status via SNMP.
Works well for us.
--
Neill Thornton
Communications Division
USNS Mercy (T-AH 19) Medical Treatment Facility
email@hidden / email@hidden
-----Original Message-----
From: fed-talk-bounces+neill.thornton=email@hidden [mailto:fed-talk-bounces+neill.thornton=email@hidden] On Behalf Of Dan Morrison
Sent: Tuesday, May 05, 2009 8:21 PM
To: email@hidden email@hidden
Subject: Re: [Fed-Talk] What do you use for Time Service?
If you need an authoritative source for NTP on a closed network, these
folks make a good product (we've deployed quite a few). You'll need
to be able to run coax from the appliance to a location with GPS
reception.
http://www.symmetricom.com/products/ntp-servers/ntp-network-appliances/
-Dan
On Tue, May 5, 2009 at 9:12 PM, Wm. Cerniuk <email@hidden> wrote:
> I used to use tick and tock in the navy for public time service. It was
> great:
> http://tycho.usno.navy.mil/ntp.html
>
> The Apple NTP has also been very reliable.
>
> At the office NTP is blocked and we can access neither external resource
> referenced. In the absence, the Mac OS X server services include NTP but
> with no real source of authority. Not like we have an atomic clock and serve
> as the world standard for time measurements like other Govt orgs ;-)
>
> The good news is that because MacBooks travel, they hit the clear Internet
> often enough to stay on time with Navy resources. The desktops, not so much.
>
> V/R,
> Wm. Cerniuk
> 703.594.7616
>
> (Sent faster from my iPhone 3G)
>
> On May 5, 2009, at 6:21 PM, "Walls, Bryan K. (MSFC-IS30)"
> <email@hidden> wrote:
>
>> What do Federal folks use for time service? Do you keep the
>> time.apple.com default, or do you use your own servers? Are your NTP servers
>> public facing or internal only?
>>
>> I'm well set on internal servers, but hate to leave my roaming users
>> without reliable time service. We have split DNS, so with a couple of extra
>> external servers I trusted I'd be in good shape. Does anyone use time from
>> another Agency? Anyone with time to
>> share?_______________________________________________
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