Article View: comp.protocols.time.ntp
Article #1035Re: Service in UK
From: Jim Reid
Date: Tue, 26 Jan 1993 14:56
Date: Tue, 26 Jan 1993 14:56
41 lines
2313 bytes
2313 bytes
In article <DWELLS.93Jan25091527@fits.cv.nrao.edu> dwells@fits.cv.nrao.edu (Don Wells) writes:
In article <whiskerp.26.0@logica.co.uk> whiskerp@logica.co.uk (Peter
Whisker) writes: "... It seems that the UK has no NTP servers - the
nearest (and the only GMT/BST time zone one) is Trinity College
Dublin..."
This is a wrong impression. There are many NTP servers in the UK. My
department alone has about 100 or so. There are a handful of stratum 1
servers, though most of them rely on the unsatisfactory MSF signal.
BTW, the time zone that a server is in doesn't matter - NTP timestamps
and radio signal sources like MSF use GMT/UTC. Round trip times to far
away servers is another matter however.....
I know of three radio clocks linked to stratum 1 NTP servers in the
UK, though I have no explanation why these aren't in the clock.txt
file on louie.udel.edu. These are:
Server(s) Contact(s) Source
bear.zoo.bt.co.uk John Sager GPS
jcs@zoo.bt.co.uk
beal.ncl.ac.uk Dick Snow MSF
C.R.Snow@ncl.ac.uk
Roger Broughton
R.E.Broughton@ncl.ac.uk
{ashby,albatross, Piete Brooks MSF
gannet,swan}.cl.cam.ac.uk pb@cl.cam.ac.uk
Martyn Johnson
maj@cl.cam.ac.uk
I understand that the servers at Cambridge are linked to one MSF
receiver with multiple outputs. Please contact the people above for
details of access policies before attempting to use their servers.
Access to the GPS server is particularly difficult because it is
tucked away behind British Telecom's Internet firewall.
Anyone is welcome to peer with my Stratum 2 servers -
ntp[0-4].cs.strath.ac.uk - these peer with a number of Stratum 1
servers (and sources) throughout the world.
Jim
Technical Details
Message-ID:
<JIM.93Jan26145611@hunter.cs.strath.ac.uk>Path:
arc1-ca.pugleaf.net!sparky!uunet!pipex!unipalm!uknet!strath-cs!nntphost!jimReferences:
<whiskerp.26.0@logica.co.uk> <DWELLS.93Jan25091527@fits.cv.nrao.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!unipalm!uknet!strath-cs!nntphost!jim From: jim@cs.strath.ac.uk (Jim Reid) Newsgroups: comp.protocols.time.ntp Subject: Re: Service in UK Message-ID: <JIM.93Jan26145611@hunter.cs.strath.ac.uk> Date: 26 Jan 93 14:56:11 GMT References: <whiskerp.26.0@logica.co.uk> <DWELLS.93Jan25091527@fits.cv.nrao.edu> Sender: news@cs.strath.ac.uk Organization: Computer Science Dept., Strathclyde Univ., Glasgow, Scotland. Lines: 41 Nntp-Posting-Host: hunter.cs.strath.ac.uk In-reply-to: dwells@fits.cv.nrao.edu's message of 25 Jan 93 14:15:27 GMT