Hello community,
I have a question about ntp server, because I don't know if the our NTP service is properly configured and working correctly.
I have a Cisco Catalyst WS-C4507R that it has a master ntp server configured and that works as ntp server to other servers.
And It also has two ntp servers configurated:
switch1#show ntp associations
address ref clock st when poll reach delay offset disp
*~127.127.7.1 127.127.7.1 4 56 64 377 0.0 0.00 0.0
~172.27.0.102 127.127.1.0 11 155 1024 377 3.4 12.99 1.6
~172.27.0.103 127.127.1.0 11 154 1024 377 2.9 6.46 0.6
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
switch1#show ntp status
Clock is synchronized, stratum 5, reference is 127.127.7.1
nominal freq is 250.0000 Hz, actual freq is 250.0071 Hz, precision is 2**19
reference time is E28265A0.26A8A8A6 (20:08:32.151 METDST Wed Jun 3 2020)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.02 msec, peer dispersion is 0.02 msec
And the configuration in our switch over ntp is:
switch1#show running-config
(...)
process cpu threshold type total rising 80 interval 50
ntp clock-period 17179376
ntp master 5
ntp update-calendar
ntp server 172.27.0.102 prefer
ntp server 172.27.0.103
!
end
I know the address 127.127.7.1 is the reference clock address for the Cisco router when the router acts as a NTP master. And I have read in another Cisco community forum that If the router has not been synchronized with any NTP server, the router will use this address as the Reference ID. But I have the address 172.27.0.102 configured as the reference.
Could you tell me if this configuration is correct? Shouldn't the master be the server 172.27.0.102 because this is the one that we have configured as prefer? Is possible that the router has not been synchronized with any NTP server?
Thanks in advance.
