168.100.15 Con?¬?gures the location of
the NTP server to be found
at 192.168.100.15
Router(config)#ntp server 192.168.100.15 key 1 Con?¬?gures the location
of the NTP server to be
found at 192.168.100.15
and de?¬?nes the
authentication key as 1
Router(config)#ntp server 192.168.100.15 key 1
prefer
Con?¬?gures the location
of the NTP server to be
found at 192.168.100.15
and de?¬?nes the
authentication key as 1
NOTE: The prefer
argument states that
this server is preferred
over other NTP servers.
126 Con?¬?guring NTP Clients and Servers
Router(config)#interface gigabitethernet 0/0 Moves to interface
con?¬?guration mode
Router(config-if)#ntp broadcast Con?¬?gures this interface
to send NTP broadcast
packets
Router(config-if)#ntp broadcast client Con?¬?gures this interface
to listen to NTP
broadcasts
Router(config-if)#exit Returns to global
con?¬?guration mode
Router(config)#access-list 1 permit host
192.168.100.15
Creates an ACL de?¬?ning a
speci?¬?c address of
192.168.100.15
Router(config)#ntp access-group peer 1 Allows time requests and
NTP control queries and
allows the system to
synchronize itself to a
system whose address
passes the ACL criteria??”
in this case ACL 1
Router(config)#ntp source loopback 0 This interface is used for
the source address for all
packets sent to all
destinations
Router(config)#ntp peer 192.
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