On 12/01/2020 16.36, James Knott wrote:
On 2020-01-12 09:41 AM, Bruce Ferrell wrote:
Peering is kind of a misnomer... In terms of ntp, a peer is simply the server you get time from. It's NOT bidirectional unless the time server you get time from has been told to get time from you.
That's a bit different from what it says here and elsewhere:
http://docs.ruckuswireless.com/fastiron/08.0.80/fastiron-08080-managementgui...
My understanding, as in that article, is the peers backup each other, while getting their time from a better source. For example, you can buy GPS receiver/NTP stratum 1 servers. You could then peer multiple of these. They'd normally get their time from the stratum 0 GPS receiver and provide stratum 1 to the network. However, if the GPS receiver fails, then the stratum 1 server will get it's time from another.
Notice that in this definition, you "get or may get the time from your peers" and they "get or may get the time from you and the others as their peers" In that sense it is bidirectional if each one set the others as peers, and each one defines himself as server. O perhaps server only for a limited set of IPs. Active/passive I don't understand what may be exactly. -- Cheers / Saludos, Carlos E. R. (from 15.1 x86_64 at Telcontar)