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Thursday, 27 September 2012

How to configure ntp server on a Cisco router

First of all set the Router’s clock as accurate as you can , ntp servers don’t like when there is big time difference
!!!!Notice we are not in global Config
2821-cisco#clock set 19:00:00 1  april 2011

!!This will config the DNS server to allow lookup by name
2821-cisco(config)#ip name-server

2821-cisco(config)#clock timezone GMT+1 +1
2821-cisco(config)#clock summer-time ETE recurring last Sun Mar 2:00 last Sun Oct 3:00 60
2821-cisco(config)#ntp server fr.pool.ntp.org source GigabitEthernet0/1
!! the following command allow the router to be a source of ntp (ntp server )
2821-cisco(config)#ntp master



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