NTP Client Configue in Switch and Router

Configure NTP Client:

To keep switch and router time same with network. Need to configure the router and switches as NTP Clients.  If not use this command service timestamps log datetime localtime then switch generated log time show its internal clock time.

SW#conf t

SW(config)# ntp server 1.1.1.1                                                                        //NTP Server IP Address

SW(config)# clock timezone UTC +6                                                              //Set Timezone.

SW(config)# service timestamps log datetime localtime                 //Use NTP time during log generate.

SW(config)# do wr                                                                                          //save

SW(config)# end                                                                                              //exit

Switch#show ntp status                                                                                    //Check NTP Clients details

Clock is synchronized, stratum 4, reference is 1.1.1.1

nominal freq is 119.2092 Hz, actual freq is 119.2073 Hz, precision is 2**18

reference time is DB63F174.195C7E08 (15:23:00.099 UTC Sun Aug 21 2016)

clock offset is 11.9068 msec, root delay is 63.71 msec

root dispersion is 99.37 msec, peer dispersion is 9.66 msec

Switch#show clock detail

15:28:59.782 UTC Sun Aug 21 2016

Time source is NTP

Switch#

ail