I've a customer who wants to peer some of our network devices so that in case of a loss of our authoritative NTP sources, they will remain synchronized with each other. These devices also act as NTP servers to every device downstream from them.
In essence, these peers will occupy all three states- server, client and peer.
Is this possible? Does it even make sense to do so?
The Cisco NTP Best Practices white paper calls out 3 architectures- flat peer, hierarchy and star. It seems like my customer is asking for a merging of the first two.