I have a very simple NTP config that consists of these commands:
ntp source vlan 210
ntp server xxx.xxx.234.10 prefer
ntp server xxx.xxx.234.12
The clock remains unsynchronized. Host xxx.xxx.234.10 is a firewall that gets its time from an internet source. I've verified with our firewall team that there is a rule in place on their firewall to allow my router to get NTP from their firewall.
If I debug NTP, I get this error:
NTP: packet from xxx.xxx.234.10 failed validity tests 20
Peer/Server Clock unsynchronized
Anyone know what that means? I've tried looking it up and got no good tips.
Thanks in advanced for any help.