Ntp what is a peer

The result is this: - as long as router A is in sync with server 1 it will not need to ask router B for time. But if for some reason it loses its sync with server 1 then router A will attempt to learn time from router B. And as long as router B is in sync with its server 2 then it will send its time to router A.

But if for some reason it loses its sync with server 2 then router B will attempt to learn time from router A. And as long as router A is in sync with its server 1 then it will send its time to router B. Richard Burts. Hall of Fame Guru. In response to Jaderson Pessoa.

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They make geeky cool. They are both educator As an industry and m Networking and Cloud Announcements Fall Created by Kelli Glass on PM. Created by Mohamed Alhenawy on AM. Ask a Question. Find more resources. Blogs Networking Blogs Networking News. Project Gallery. New Community Member Guide. Related support document topics. Then the appropriate configuration of router A has server 1 as ntp server and has router B as ntp peer. But if for some reason it loses its sync with server 1 then router A will attempt to learn time from router B.

And as long as router B is in sync with its server 2 then it will send its time to router A. But if for some reason it loses its sync with server 2 then router B will attempt to learn time from router A.

If SecureSync is configured to receive time from one or more Stratum 1 NTP Servers, with no other higher priority input references available, SecureSync will report to the network that it is a Stratum 2 Server.

If SecureSync is synchronized to another NTP Server or reference, and that server or reference subsequently loses sync or becomes unavailable with no other higher priority input references being present and valid , SecureSync will then go into the Holdover mode.

It will remain in Holdover mode until any enabled and valid input reference becomes available again, or until the Holdover period expires, whichever occurs first.

During Holdover mode, NTP will remain at the same Stratum level it was before entering the Holdover mode and can continue to be the reference to the network. However, if no input reference becomes available before the Holdover period expires, Time Sync will be lost and shortly thereafter, NTP will report to the network that it is now at Stratum For more information about Holdover, see Holdover Mode.

SecureSync Online User Manual.