Switch 2024 Dns Lookup. Set primary dns to 163.172.141.219, and secondary dns to 207.246.121.77. Each device performs a dns lookup to solve the dns name to an ip address in order to send out actual ntp packets to the server.

You can combine options and resource record type queries in command lines. The dns lookup is done directly against the domain’s authoritative name server, so changes to dns records should show up instantly.