Differences between version 22 and revision by previous author of NTPServers.
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| Newer page: | version 22 | Last edited on Sunday, September 17, 2017 11:49:02 pm | by SamBailey | Revert |
| Older page: | version 21 | Last edited on Tuesday, April 8, 2014 8:57:57 pm | by BlakJak | Revert |
@@ -1,9 +1,9 @@
-!!! [NTP]
Servers For Everyone
+!!! Servers For Everyone
-For smaller networks and end users, the best servers to use are the ones supplied by your service provider or ISP.
+For smaller networks and end users, the best [NTP]
servers to use are the ones supplied by your service provider or ISP.
-Many [ISP]s have [NTP]
servers for their customers:
+Many [ISP]s have servers for their customers:
* <tt>ntp.iprolink.co.nz</tt>
* <tt>tk1.ihug.co.nz to tk3.ihug.co.nz</tt>
* <tt>time.paradise.net.nz</tt>
@@ -13,31 +13,46 @@
There is a pool of servers at <tt>nz.pool.ntp.org</tt>, which provides RoundRobin [DNS] access to publicly accessible [NTP] servers that have agreed to be part of the pool.
!!! Stratum 1 Servers
-First: __be nice!__ You shouldn't synchronise to a stratum 1 server for your small network -- if everyone did that then the server would need too much bandwidth. For example.
NetGear hard-coded a public [
NTP]
server into some of their consumer products, which eventually ended up using hundreds of Mbits/second of the university's bandwidth, even after they were forced to shut down the server.
+First: __be nice!__ You shouldn't synchronise to a stratum 1 server for your small network -- if everyone did that then the server would need too much bandwidth. For example, ~
NetGear hard-coded a public NTP server into some of their consumer products, which eventually ended up using hundreds of Mbits/second of the university's bandwidth, even after they were forced to shut down the server.
-If you are running a substantial network, you should install your own Level 2
NTP servers, based on New Zealand standard time
as described below
.
+If you are running a substantial network, you should install your own NTP servers, based on the servers below.
+
+! .nz Registry Services
+
+There are four stratum 1 NTP servers provided by [.nz Registry Services (NZRS)|http://ntp.net.nz/] for network operators based within
New Zealand. They are operated by NZRS Limited, a wholly-owned subsidiary of [InternetNZ|https://internetnz.nz/].
+
+It is not a public network but is covered by an [Acceptable use policy|https://ntp.net.nz/pages/aup.html]. These timeservers are provided primarily for network operators based within New Zealand and peripatetic users who are ordinarily based in NZ.
+* ntp1 is in Albany connected via FX.
+* ntp2 is in Auckland CBD connected via [ICONZ].
+* ntp3 is in Wellington CBD connected via FX.
+* ntp4 is in Christchurch connected via 2Degrees.
+
+The host names <tt>__s__~[1-4~].ntp.net.nz</tt> can be used for:
+* Desktops and laptops
+* Your own home router
+
+The host names <tt>__p__~[1-4~].ntp.net.nz</tt> can be used for:
+* Stratum 2 NTP servers.
+* Kit normally found in a server room, such
as servers, enterprise routers (not consumer products), SANs etc.
+
+The following devices are [not allowed|https://ntp.net.nz/pages/aup.html]:
+* Consumer devices such as printers, cameras, mobile phones, etc.
+
+All four are Sonoma D12 NTP servers, each connected to a differential GPS antenna on the roof and each with a rubidium oscillator to provide a stable clock in the event of an issue with the GPS signal. They are not actively synchronised to each other. [more|https://ntp.net.nz/pages/network-architecture
.html]
! The Measurement Standards Laboratory
The standard for time in New Zealand is maintained by the [Measurement Standards Laboratory|http://msl.irl.cri.nz/], part of [Industrial Research Limited|http://irl.cri.nz/]. MSL runs several public NTP servers that are referenced to UTC(MSL).
+
+The servers are publicly available to all connections from within NZ.
* <tt>msltime.irl.cri.nz</tt>
* <tt>msltime1.irl.cri.nz</tt>
* <tt>msltime2.irl.cri.nz</tt>
-They are FreeBSD-based servers that are directly connected
to their master
HP5071A caesium clock
. [more|http://msl.irl.cri.nz/services/time-and-frequency/ntp-server-information]
-
-! .nz Registry Services
-
-There are [three stratum 1 NTP servers provided by .nz Registry Services (NZRS)|http://ntp.net.nz/] for network operators based within New Zealand.
-
-* <tt>s1.ntp.net.nz</tt> in Albany connected to [FX].
-* <tt>s2.ntp.net.nz</tt> in Auckland connected to [ICONZ] and [APE].
-* <tt>s3.ntp.net.nz</tt> in Wellington connected to [FX] and [WIX].
-
-All three are Symmetricom S300 NTP servers, each connected to a differential GPS antenna on the roof and each with a rubidium oscillator to provide a stable clock in the event of an issue with the GPS signal. [more|http://ntp.net.nz/architecture/
]
+They are FreeBSD-based servers synchronised using a 1 pulse per second signal
to the New Zealand time standard. The server time is typically stable with respect to the time in the
HP5071A caesium clocks to around 1 microsecond
. [more|http://msl.irl.cri.nz/services/time-and-frequency/ntp-server-information]
!!! Universities
Most universities restrict access to their NTP servers, however some are publicly accessible:
