Sample

The main objective of this challenge is to set NTP (Network Time Protocol) settings. A sample configuration is:

R1(config)# ntp master 2
R1(config)# ntp server 1.2.3.4
R1(config)# ntp authenticate
R1(config)# ntp authentication-key 1 md5 test
R1(config)# ntp trusted-key 1

For example:

R1(config)# ntp ?
  access-group        Control NTP access
  authenticate        Authenticate time sources
  authentication-key  Authentication key for trusted time sources
  broadcastdelay      Estimated round-trip delay
  clock-period        Length of hardware clock tick
  master              Act as NTP master clock
  max-associations    Set maximum number of associations
  peer                Configure NTP peer
  server              Configure NTP server
  source              Configure interface for source address
  trusted-key         Key numbers for trusted time sources

R1(config)# ntp master ?
  <1-15>  Stratum number
  

R1(config)# ntp master 2
R1(config)# ntp server ?
  Hostname or A.B.C.D  IP address of peer
  vrf                  VPN Routing/Forwarding Information

R1(config)# ntp server 1.2.3.4
R1(config)# ntp authenticate
R1(config)# ntp authentication-key ?
  <1-4294967295>  Key number

R1(config)# ntp authentication-key 1 ?
  md5  MD5 authentication

R1(config)# ntp authentication-key 1 md5 ?
  WORD  Authentication key

R1(config)# ntp authentication-key 1 md5 test

R1(config)# ntp trusted-key ?
  <1-4294967295>  Key number

R1(config)# ntp trusted-key 1