Ok, for a proper configuration of polish timezone
on a cisco router/switch we need to set up two things:
the actual timezone (UTC+0100)
and the daylight saving time (here called a summer-time)
the first one is quite easy, but as for DST.. i never rememeber when it happens (i usually hear somewhere on the radio/tv that tomorrow we will be changing the time... and thats it), once for all:
switch to summer time happens on last Sunday of March
switch to winter time happens on last Sunday of October
which in cisco IOS gives us, the following:
clock timezone Warsaw 1
clock summer-time Warsaw recurring last Sun Mar 2:00 last Sun Oct 3:00
Ok, this is an obvious stuph, so why do i write it?
Simple i never remember the server ip addreses ;)
ntp max-associations 3
ntp peer ptbtime1.ptb.de
ntp peer vega.cbk.poznan.pl
ntp peer pavo.cbk.poznan.pl
ntp peer ntp.cesnet.cz
ntp peer ntp.certum.pl
ntp peer info.cyf-kr.edu.pl
and now a litle bit of a description:
ptbtime1.ptb.de - this server is located in Germany, and is provided by Physikalisch-Technische Bundesanstalt (a national science institute)
They actualy have 3 caesium clocks and one caesium fontain, they produce time for the whole Germany, and ofcourse they are a stratum 1.
admins email is: ntp-admin at ptb.de
pavo.cbk.poznan.pl - those servers ar courtesy of BOROWIEC ASTROGEODYNAMIC OBSERVATORY
vega is said to be connected to a GPS time source and pavo is said to have a caesium source, so both of them should be a stratum 1, but pavo seems to be dead as for now (24/07/2003). admin's email is: kondor at cbk.poznan.pl
ntp.cesnet.cz - this server is located in The Czech Republic, it is provided by CESNET
It is a GPS device connected to a PC, so it is a stratum 1 server.
admin's email is: ntp-admin at cesnet.cz
ntp.certum.pl - this is also located in poland,a nd is run by Centrum.pl
This is another GPS time source, so its a stratum 1.
admins email is: wslusarczyk AT certum.pl
info.cyf-kr.edu.pl - this server is located in poland, ad run by Academic Computer Center CYFRONET
This is a stratum 2 server.
admins email is: Jerzy.Pawlus AT cyf-kr.edu.pl
so, why am i giving the admins email adreses' ? when you want to suck time from someone, let him know about it ;)