[170715] in North American Network Operators' Group
Re: Recommendation on NTP appliances/devices
daemon@ATHENA.MIT.EDU (Julien Goodwin)
Fri Apr 4 05:41:24 2014
Date: Fri, 04 Apr 2014 20:38:21 +1100
From: Julien Goodwin <nanog@studio442.com.au>
To: "Majdi S. Abbas" <msa@latt.net>,
David Hubbard <dhubbard@dino.hostasaurus.com>
In-Reply-To: <20140403231608.GC14529@puck.nether.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 04/04/14 10:16, Majdi S. Abbas wrote:
> On Thu, Apr 03, 2014 at 06:55:02PM -0400, David Hubbard wrote:
>> Anyone have recommendations on NTP appliances; i.e. make, model, gps vs
>> cell, etc.? Roof/outdoor/window access not available. Would ideally
>> need to be able to handle bursts of up to a few thousand simultaneous
>> queries. Needs IPv6 support.
>
> Without roof access I'd suggest CDMA instead of GPS:
>
> http://www.endruntechnologies.com/ntp-server.htm
>
> Appears to fit your requirements.
>
> --msa
>
The downside of CDMA is it's going to live until Verizon & Sprint can
get enough of their customers migrated to LTE.
It really depends on how accurate you need to be.
If you only want <10ms accuracy but stable (It's trivial to get all
clients better than 1ms) then grab three to five old servers (or new
low-power ones), and just put ntpd on them, pointing at some nearby
upstreams.
If it *must* be an appliance the Symmetricom units are nice, and support
IPv6 (have done for years).
