10.3.4 Packet Tracer - Configure and Verify NTP

configure and verify network time protocol ntp addressing table n1 is the server this is n1 and two routers network time protocol ntp synchronizes the time of day among set of distributed time servers and clients ntp uses the user datagram protocol udp as its transport protocol all ntp communications use coordinated universal sign udc ntp server server and one is already configured as ntp server for this topology verify on services ntp access the server services ntp now you can see ntp is on and this is the the date from r1 ping n1 to verify connectivity click r1 go to command line interface enter enable ping for 965 225 this is the ip address of the server n1 success repeat the ping to n1 from r2 go to r2 verify connectivity with server command line interface enter ping 0965 to 125 success ntp clients cisco devices can be configured to refer to an ntp server to use to synchronize their clocks it is important to keep time consistent among all devices of here are one or two as ndp clients so their clocks are synchronized but r1 and r2 would use n1 server as their ntp server check the current entp and clock settings okay on r1 show ntp status go to r1 show ntp status ntp is not enabled show clock detail show cloud detail okay now is march 1 1993 okay obviously this is not the current date and this is the time and it's not the current time okay time source is hardware calendar okay configure r1 and r2 sdp clients on global configuration mode with configure terminal access global configuration mode and configure ntp server and the ip address of the server that is ip address of m1 go to r1 configure terminal ntp server to 9165 225 okay is server server r2 repeat that configuration enable configure terminal mtp server for 9165 to 100 to 25 enter verify ntp seedings check the clocks on r1 and r2 again to verify that they are synchronized go to r1 and from privilege exact amount um shout clock detect show clock detail enter okay show clock detail is 1993 still 1993 time source hardware okay march 1. okay this is not the current date and time and when working on physical routers i know a few minutes before r1 and r2 clocks are synchronized with pocket raiser you can use the fast forward time boot on to split up synchronization if you want use this boot on fast forward time okay i will not use this but if you want click here go to r1 and repeat show clock detail okay now you can see october 12 2019 and the current time go to server go to services ntp now you can see the configuration of october 2019 12. execute same command on r2 go to r2 and show clock detail time sources ntp october 12 2019 are the clocks synchronized yes r1 and r2 are synchronized with n1 server and one check ntp status and ntp associations by using the following commands go to r1 show ndp status clock is synchronized the stratum is number two if server has the stratum one the client will be stratum two the reference is two or nine one sixty five two hundred to twenty five the ip address of n1 go go to r2 show ndp status okay synchronize it very good ntp associations go to r1 show ntp let's show ntp associations and now you can see the address this is the others of the server 209 165 200 225 okay the ip address of the server the reference clock of the server is itself okay the reference of this server is itself and stratum one stratum one of the server and remember if the server has stratum 1 the client will have a stratum 2 okay r2 show ntp associations okay ap address reference clock stratum 1 very nice completion 100 thank you very much you

Channel: Christian Augusto Romero Goyzueta

Views: 3,262

Keywords: ensa, enterprise networking, security, automation, ccna, version 7, ccna 7, ntp, network time protocol, show ntp status, show clock, show ntp associations

Id: 3I91RbAsS84

Length: 8min 35sec (515 seconds)

Published: Sun Sep 13 2020